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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-K
[x]
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 20172021
OR
[ ]
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934
For the transition period from _____ to _____
Commission File Number 1-5823
CNA FINANCIAL CORPORATION
(Exact name of registrant as specified in its charter)
Delaware
36-6169860
(State or other jurisdiction of

incorporation or organization)
36-6169860
(I.R.S. Employer

Identification No.)
333 S. Wabash
151 N. Franklin
60606
Chicago,Illinois
(Zip Code)
(Address of principal executive offices)
60604
(Zip Code)
(312) 822-5000
(Registrant's telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
Title of each class
Common Stock
with a par value of $2.50 per share
Trading Symbol(s)
Name of each exchange on which registered
Common Stock, Par value $2.50"CNA"New York Stock Exchange
Chicago Stock Exchange
Securities registered pursuant to Section 12(g) of the Act:
None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes [x] No [ ]
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes [ ] No [x]
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes [x] No [ ]
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes [x] No [ ]
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. [x]
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,”company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large accelerated filer
filer [x]
Accelerated filer [ ]
Non-accelerated
filer [ ] (Do not check if a smaller reporting company)
Non-accelerated filer

Smaller reporting company [ ]Emerging growth company [ ]
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. [ ]
Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes [ ] No [x]
As of February 9, 2018, 271,217,6444, 2022, 271,365,221 shares of common stock were outstanding. The aggregate market value of the common stock held by non-affiliates of the registrant as of June 30, 20172021 was approximately $1,362$1,255 million based on the closing price of $48.75$45.49 per share of the common stock on the New York Stock Exchange on June 30, 2017.2021.
DOCUMENTS INCORPORATED BY REFERENCE:REFERENCE
Portions of the CNA Financial Corporation Proxy Statement prepared for the 20182022 annual meeting of shareholders, pursuant to Regulation 14A, are incorporated by reference into Part III of this report.




Item NumberPage
Number
1.
1A.
1B.
2.
3.
4.
PART II
5.
6.
7.
7A.
8.
9.
9A.
9B.
9C.
PART III
10.
11.
12.
13.
14.
PART IV
15.
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Table of Contents
Item Number 
Page
Number
  
1.
1A.
1B.
2.
3.
4.
 PART II 
5.
6.
7.
7A.
8.
9.
9A.
9B.
 PART III 
10.
11.
12.
13.
14.
 PART IV 
15.

PART I
ITEM 1. BUSINESS
CNA Financial Corporation (CNAF) was incorporated in 1967 and is an insurance holding company. References to “CNA,” “the Company,” “we,” “our,” “us” or like terms refer to the business of CNAF and its subsidiaries. CNA's property and casualty and remaining life and group insurance operations are primarily conducted by Continental Casualty Company (CCC), The Continental Insurance Company, Western Surety Company, CNA Insurance Company Limited, and Hardy Underwriting Bermuda Limited and its subsidiaries (Hardy)., and CNA Insurance Company (Europe) S.A. Loews Corporation (Loews) owned approximately 89%89.6% of our outstanding common stock as of December 31, 2017.2021.
Our insurance products primarily include commercial property and casualty coverages, including surety. Our services include warranty, risk management information services and claims administration. Our products and services are primarily marketed through independent agents, brokers and managing general underwriters to a wide variety of customers, including small, medium and large businesses, insurance companies, associations, professionals and other groups. The property and casualty insurance industry is highly competitive, both as it relates to rate and service. We compete with a large number of stock and mutual insurance companies, as well as other entities, for both distributors and customers.
Our commercial property and casualty underwriting operations presence in the United States of America (U.S.) consists of field underwriting locations and centralized processing operations which handle policy processing, billing and collection activities and also act as call centers to optimize service. Our claim operations in the U.S. consists of primary locations where we handle multiple claim types and key business functions, as well as regional claim offices which are aligned with our underwriting field structure. We also have property and casualty underwriting operations in Canada, the United Kingdom (U.K.) and Continental Europe, as well as access to business placed at Lloyd's of London through Syndicate 382.
Our commercial property and casualty insurance operations are managed and reported in three business segments: Specialty, Commercial and International, which we refer to collectively as Property & Casualty Operations. Our operations outside of Property & Casualty Operations are managed and reported in two business segments: Life & Group and Corporate & Other. Each segment is managed separately due to differences in their markets and product mix. Discussion of each segment, including the products offered, customers served and distribution channels used, is set forth in the Management's Discussion and Analysis (MD&A) included under Item 7 and in Note O to the Consolidated Financial Statements included under Item 8.
Competition
The property and casualty insurance industry is highly competitive both as to rate and service. We compete with a large number of stock and mutual insurance companies and other entities for both distributors and customers. Insurers compete on the basis of factors including products, price, services, ratings and financial strength. Accordingly, we must continuously allocate resources to refine and improve our insurance products and services.
There are approximately 2,600 individual companies that sell property and casualty insurance in the United States. Based on 2016 statutory net written premiums, we are the eighth largest commercial insurer in the United States of America.
Current Regulation
The insurance industry is subject to comprehensive and detailed regulation and supervision. Regulatory oversight by applicable agencies is exercised through review of submitted filings and information, examinations (both financial and market conduct), direct inquiries and interviews. Each domestic and foreign jurisdiction has established supervisory agencies with broad administrative powers relative to licensing insurers and agents, approving policy forms, establishing reserve requirements, prescribing the form and content of statutory financial reports and regulating capital adequacy and the type, quality and amount of investments permitted. Such regulatory powers also extend to governance requirements, risk assessment practices and disclosures and premium rate regulations requiring rates not be excessive, inadequate or unfairly discriminatory. In addition to regulation of dividends by insurance subsidiaries, intercompany transfers of assets or payments may be subject to prior notice or approval by insurance regulators, depending on the size of such transfers and payments in relation to the financial position of the insurance subsidiaries making the transfer or payment.payments.
As our insurance operations are conducted in both domestic and foreign jurisdictions, we are subject to a number of regulatory agency requirements applicable to a portion, or all, of our operations. These include but are not limited to, the State of Illinois Department of Insurance (which is our global group-wide supervisor), the U.K. Prudential Regulatory Authority and Financial Conduct Authority, the Office of Superintendent of Financial Institutions in Canada, the Luxembourg insurance regulator Commissariat aux Assurances (the CAA) and the Bermuda Monetary Authority.
The U.S. and foreign regulatory environment in which we operate is evolving on an ongoing basis and impacts aspects of corporate governance, risk management practices, public disclosures and cyber security. We
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continue to invest in the security of our systems and in our technology infrastructure on an enterprise-wide basis.
Domestic insurers are also required by state insurance regulators to provide coverage to certain insureds who would not otherwise be considered eligible by the insurers. Each state dictates the types of insurance and the level of coverage that must be provided to such involuntary risks. Our share of these involuntary risks is mandatory and generally a function of our respective share of the voluntary market by line of insurance in each state.
Further, domestic insurance companies are subject to state guaranty fund and other insurance-related assessments. Guaranty funds are governed by state insurance guaranty associations which levy assessments to meet the funding needs of insolvent insurer estates. Other insurance-related assessments are generally levied by state agencies to fund various organizations, including disaster relief funds, rating bureaus, insurance departments and workers'

compensation second injury funds, orand by industry organizations that assist in the statistical analysis and ratemaking process, and we have the ability to recoup certain of these assessments from policyholders.
As ourAlthough the U.S. federal government does not currently directly regulate the business of insurance, operations are conducted in a multitude of both domesticfederal legislative and foreign jurisdictions, we are subjectregulatory initiatives can affect the insurance industry. These initiatives and legislation include proposals relating to a number of regulatory agency requirements applicable to a portion, or all, of our operations. These include but are not limited to, the State of Illinois Department of Insurance (which is our global group-wide supervisor), the U.K. Prudential Regulatory Authorityterrorism and Financial Conduct Authority, the Bermuda Monetary Authoritynatural catastrophe exposures, cybersecurity risk management, federal financial services reforms and the Office of Superintendent of Financial Institutions in Canada.certain tax reforms.
Hardy, a specialized Lloyd's of London (Lloyd's) underwriter, is also supervised by the Council of Lloyd's, which is the franchisor for all Lloyd's operations. The Council of Lloyd's has wide discretionary powers to regulate Lloyd's underwriting, such as establishing the capital requirements for syndicate participation. In addition, the annual business plansplan of each syndicate areis subject to the review and approval of the Lloyd's Franchise Board, which is responsible for business planning and monitoring for all syndicates.
Capital adequacy and risk management regulations, referred to as Solvency II, apply to our European operations and are enacted by the European Commission, the executive body of the European Union (E.U.).E.U. Additionally, the International Association of Insurance Supervisors (IAIS) continues to consider regulatory proposals addressing group supervision,develop capital requirements and enterprise risk management. as more fully discussed below.
Regulation Outlook
The U.S. Federal Reserve,IAIS has adopted a Common Framework (ComFrame) for the U.S. FederalSupervision of Internationally Active Insurance Office andGroups (IAIGs) which is focused on the effective group-wide supervision of internationally active insurance groups, such as CNA. As part of ComFrame, the IAIS is developing a global insurance capital standard for insurance groups. While the general parameters of ComFrame have been finalized, many critical areas of the global insurance capital standard are still under consideration. Certain jurisdictional regulatory regimes are subject to revision in response to these global developments.
The National Association of Insurance Commissioners (NAIC) arehas developed an approach to group capital regulation and solvency-monitoring activities using the Group Capital Calculation (GCC). While the current U.S. regulatory regime is based on legal entity regulation, the GCC will quantify risk across the insurance group and also provide additional financial information to regulators to assess the financial condition of non-insurance entities. The GCC was adopted by the NAIC along with model legislative language designed to enable the framework once implemented by state legislatures. Alongside the GCC, the NAIC is also working with other global regulatorsinterested jurisdictions, both domestic and international, to define such proposals. Itdevelop an Aggregation Method (AM) approach to assessing group capital. The AM is not currently clear to what extentinfluenced by the GCC and calculated in a similar manner. By 2024, the IAIS activities will affect us, as any final proposal would ultimately needbe assessing whether the AM provides comparable outcomes to be legislated or regulated by each individual country or state.the consolidated group insurance capital standard (ICS) being developed for use with IAIGs.
However, thereThere have also been definitive developments recently with respect to prudential insurance supervision.supervision unrelated to the IAIS activities. On September 22, 2017, the U.S. Treasury Department, the U.S. Trade Representative (USTR) and the E.U. announced they had formally signed a covered agreement on Prudential Measures Regarding Insurance and Reinsurance (Covered(U.S.-E.U. Covered Agreement). The U.S.-E.U. Covered Agreement requires U.S. states to prospectively eliminate the requirement that domestic insurance companies must obtain collateral from
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E.U. reinsurance companies that are not licensed in their state (alien reinsurers) in order to obtain reserve credit under statutory accounting. In exchange, the E.U. will not impose local presence requirements on U.S. firms operating in the E.U., and effectively must defer to U.S. group capital regulation for these firms. TheOn December 18, 2018, the U.S. Treasury Department, the USTR, and USTR also released a U.S. policy statement clarifying their interpretation of the U.K. announced they formally signed the Bilateral Agreement on Prudential Measures Regarding Insurance and Reinsurance (U.S.-U.K. Covered Agreement). This Agreement in several key areas including, capital, group supervision and reinsurance.
has similar terms as the U.S.-E.U. Covered Agreement. Because the Covered Agreement isthese covered agreements are not self-executing, U.S. state laws will need to be revised to change reinsurance collateral requirements to conform to the Covered Agreement. Before any such revision to state laws can be advanced, the NAIC must develop a new approach for determinationprovisions within each of the appropriate reserve credit under statutory accounting for E.U. based alien reinsurers. In addition, the NAIC is currently developing an approach to group capital regulation as the current U.S. regulatory regime is based on legal entity regulation. Both theagreements.
The reinsurance collateral requirement change and adoption of group capital regulation must be affectedeffected by the states within five years from the signing of the Covered Agreement,covered agreements, which is September 1, 2022, or states risk federal preemption.preemption in this area. We will monitorhave been monitoring the modification of state laws and regulations in order to comply with the provisions of the Covered Agreementcovered agreements and assess its potential effects on our operations and prospects. The current expectation is that the necessary state statutory changes will be adopted by the deadline.
Although the U.S. federal government does not currently directly regulate the businessThe advancement of environment, social and governance (ESG) frameworks intended to promote sustainable and inclusive development of insurance federal legislativemarkets has been an area of focus for standard setters and regulatory initiatives can affectbodies at the insurance industry. These initiativesstate, federal and legislation include proposals relating to potential federal oversight of certain insurers; terrorism and natural catastrophe exposures; cybersecurity risk management; federal financial services reforms; and certain tax reforms.
The Terrorism Risk Insurance Program Reauthorization Act of 2015 provides for a federal government backstop for insured terrorism risks through 2020. The mitigating effect of such law is part of the analysis of our overall risk posture for terrorism and, accordingly, our risk positioning may change if such law were modified.
international level. We also continue to investmonitor the expansion of policy in the security network of our systems onthis area and have established an enterprise-wide basis, especially considering the implications of datainternal ESG Committee and privacy breaches. This requires an investment of a significant amount of resources by us on an ongoing basis. Potential implications of possible cybersecurity legislation on such current investment, if any, are uncertain.

The foregoing lawsTask Force to seek to ensure compliance with future regulation, and proposals, either separately orassess and seek to implement best practices in the aggregate, create a regulatory and legal environment that may require changes in our business plan or significant investment of resources in order to operate in an effective and compliant manner.
Additionally, various legislative and regulatory efforts to reform the tort liability system have, and will continue to, affect our industry. Although there has been some tort reform with positive impactresponse to the insurance industry, new causes of action and theories of damages continue to be proposed in court actions and by federal and state legislatures that continue to expand liability for insurers and their policyholders.emerging guidance.
Employee RelationsHuman Capital
As of December 31, 2017,2021, we had approximately 6,3005,600 employees. We seek to create a culture of inclusion that challenges and engages our employees and have experienced satisfactory labor relations.offers them opportunities to learn, grow and achieve their career goals. We have never had work stoppages duebelieve this will facilitate our ability to labor disputes.continue to attract and retain a highly talented workforce.
Talent Attraction, Retention and Development
CNA focuses on the attraction, retention and development of a highly talented workforce. We strive to maintain a robust talent pool to reflect the specialist nature of our business. Our annual talent and succession planning process culminates in a review with leadership of key talent retention and promotion, as well as a review of our succession plans.
We aim to continually build on the expertise of our workforce. At entry levels, we have implemented trainee and internship programs and we continue to leverage relationships with colleges to attract new talent.
Our approach to cultivating an engaging workplace and continuously improving the employee experience is designed to attract and retain top industry talent. We seek employee feedback through a range of methods, including employee pulse surveys and routine dialogue with our employee resource groups and leaders. In 2021, we refreshed our company flexible working program and implemented hybrid office/home working for most of our employees.
We seek to promote the development of employees, both to optimize current performance and to develop skills for future career growth. We offer eligible employees business unit specific curricula, tuition reimbursement opportunities, and mentoring programs. We focus on leadership development with programs designed for new leaders as well as specialized learning for all leaders. In addition, our performance management cycle seeks to ensure that employees have goals and development plans refreshed at least annually and performance review conversations are held between managers and their direct reports throughout the annual performance period.

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Diversity and Inclusion
Diversity and Inclusion (D&I) is a strategic imperative. Our D&I Vision is to cultivate an inclusive culture that celebrates individuals’ differences, attracts diverse talent, and inspires a work environment that enables all employees to do their best work.
To act on our D&I Vision, we seek to bring together senior leaders, D&I subject matter experts and a diverse spectrum of colleagues across our global network. Our strategy is created and executed by the senior leaders that comprise our D&I Council and the employees that lead our employee resource groups. This structure facilitates D&I thought leadership and employee perspectives. Critical components of our D&I Vision include:
Skill building. In 2021, we launched a new D&I learning program aimed to build allyship across the global enterprise. It includes various forms of allyship training and education for our employees – providing them with opportunities to learn and practice new skills.
Leadership training. CNA requires every people leader and officer to complete inclusive leadership training. We also provide additional networking and learning opportunities for leaders to support the critical role they play in creating an inclusive workplace culture.
Talent development. In 2021, we launched a new talent sponsorship program that seeks to accelerate the development of high performing diverse employees, diversify our leadership ranks, and broadly build inclusive leadership skills.
Representation. We regularly monitor our representation of diverse talent and review our trends in relation to both the labor market generally and industry-specific competitors. We seek to increase diversity throughout our organization.
Partnerships. CNA has a commitment to certain organizations whose D&I objectives align with our own. In 2021, through these partnerships, we delivered training opportunities to employees, uncovered new sources of future talent, contributed to the development of college students from underserved communities, and encouraged our employees to be an ally in their communities through volunteering.
We also have a corporate social responsibility strategy with a focus on four core areas: education, environment, inclusion and well-being. Our employees are encouraged to participate in a wide array of volunteer activities and we support their charitable giving by matching employee contributions to qualified nonprofit organizations.
Compensation and Benefits
We offer comprehensive benefit planscompensation and benefits packages to eligible employees including a 401k plan, healthcare and insurance benefits, health savings and flexible spending accounts, paid time off and certain family assistance programs, including paid family leave, flexible work arrangements and adoption assistance plans. We also offer stock-based compensation to certain management personnel as a way to attract and retain key talent.
Employee Wellbeing
We offer benefits that seek to support the overall wellbeing of our employees, including physical, mental, financial and social health. In 2021, we deployed a multitude of new benefits with an emphasis on wellbeing. These enhancements included the introduction of a new holistic wellbeing incentive program that provides tools and resources to help our employees and their families achieve their overall wellbeing goals. We also continue to provide access to a variety of mental health resources, such as our employee assistance program and programming focused on stress management and resilience.
The health and safety of our employees and the communities we serve is also a focus at CNA. In March 2020, we pivoted to a remote working environment for substantiallynearly all of our employees including retirement plans, savings plans, disability programs, group life programs and group health care programs. See Note Iin response to the Consolidated Financial Statements included under Item 8 for further discussionCOVID-19 pandemic. As pandemic conditions persisted in 2021, remote working broadly remained in place while all of our benefit plans.offices were open for employee use throughout 2021 with enhanced safety protocols. We sought to provide our employees the opportunity to contribute productively and grow and develop, while also managing their physical and mental health.
Direct Written Premiums by Geographic Concentration
Set forth below is the distribution of our direct written premiums by geographic concentration.
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Years ended December 31Percent of Total
 2017 2016 2015
California9.7% 9.5% 9.1%
Texas8.5
 8.2
 8.1
New York7.2
 6.9
 7.1
Illinois6.4
 7.6
 7.5
Florida5.7
 5.8
 5.7
Pennsylvania3.8
 3.7
 3.8
New Jersey3.2
 3.1
 3.2
Canada2.2
 1.9
 2.2
All other states, countries or political subdivisions53.3
 53.3
 53.3
Total100.0% 100.0% 100.0%
Approximately 7.7%, 7.9% and 8.0%Table of our direct written premiums were derived from outside of the United States for the years ended December 31, 2017, 2016 and 2015.Contents
Available Information
We file annual, quarterly and current reports, proxy statements and other documents with the Securities and Exchange Commission (SEC) under the Securities Exchange Act of 1934 (Exchange Act). The public may read and copy any materials that we file with the SEC at the SEC's Reading Rooms at 100 F Street NE, Washington, D.C. 20549. The public may obtain information on the operation of the Reading Rooms by calling the SEC at 1-202-551-8090. The SEC also maintains an internet site that contains reports, proxy and information statements and other information regarding issuers, including CNA, that file electronically with the SEC.CNA. The public can obtain any documents that we file with the SEC at www.sec.gov.
We also make available free of charge on or through our internet website at www.cna.com our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. Copies
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Table of these reports may also be obtained, free of charge, upon written request to: CNA Financial Corporation, 333 S. Wabash Avenue, Chicago, IL 60604, Attn: Scott L. Weber Executive Vice President and General Counsel.Contents

ITEM 1A. RISK FACTORS
Our business faces many risks and uncertainties.These risks and uncertainties could lead to events or circumstances that have a material adverse effect on our results of operations, equity, business and insurer financial strength and corporate debt ratings.We have described below the most significantmaterial risks facing us. that we face.There may be additional risks that we do not yet know of or that we do not currently perceive to be as significantmaterial that may also affect our business.You should carefully consider and evaluate all of the information included in this report and any subsequent reports we may file with the SEC or make available to the public before investing in any securities we issue.
Insurance Risks
If we determine that our recorded insurance reserves are insufficient to cover our estimated ultimate unpaid liability for claim and claim adjustment expenses, we may need to increase our insurance reserves which would result in a charge to our earnings.
We maintain insurance reserves to cover our estimated ultimate unpaid liability for claim and claim adjustment expenses, including the estimated cost of the claims adjudication process, for reported and unreported claims.Insurance reserves are not an exact calculation of liability but instead are complex management estimates developed utilizing a variety of actuarial reserve estimation techniques as of a given reporting date.The reserve estimation process involves a high degree of judgment and variability and is subject to a number of factors which are highly uncertain.These variables can be affected by both changes in internal processes and external events.Key variables include claim severity, frequency of claims, claim severity, mortality, morbidity, discount rates, economic, social and medical inflation, claim handling policies and procedures, case reserving approach, underwriting and pricing policies, changes in the legal and regulatory environment and the lag time between the occurrence of an insured event and the time of its ultimate settlement.Mortality is the relative incidence of death.Morbidity is the frequency and severity of injury, illness, sickness and diseases contracted.
There is generally a higher degree of variability in estimating required reserves for long-tail coverages, such as workers' compensation, general liability and workers' compensation,professional liability, as they require a relatively longer period of time for claims to be reported and settled.The impact of changes in economic and social inflation, and medical costs are also more pronounced for long-tail coverages due to the longer settlement period.Certain risks and uncertainties associated with our insurance reserves are outlined in the Critical Accounting Estimates and the Reserves - Estimates and Uncertainties sections of MD&A in Item 7.
We are subject to the uncertain effects of emerging or potential claims and coverage issues that arise as industry practices and legal, judicial, social, economic and other environmental conditions change. Further, the impact of social inflation continues to be significant and the trajectory of its future impact remains uncertain. These issues, as well as social inflation, have had, and may continue to have, a negative effect on our business, results of operations and financial condition by either extending coverage beyond the original underwriting intent or by increasing the number or size of claims, resulting in further increases in our reserves. The effects of unforeseen emerging claim and coverage issues are extremely difficult to predict.predict and may be material.
Emerging or potential claim and coverage issues include, but are not limited to, uncertainty in future medical costs in workers' compensation. In particular, medical cost inflation could be greater than expected due to new treatments, drugs and devices; increased healthcare utilization; and/or the future costs of healthcare facilities. In addition, the relationship between workers' compensation and government and private healthcare providers could change, potentially shifting costs to workers' compensation.
In light of the many uncertainties associated with establishing the estimates and making the judgments necessary to establish reserve levels, we continually review and change our reserve estimates in a regular and ongoing process as experience develops from the actual reporting and settlement of claims and as the legal, regulatory and economic environment evolves.If our recorded reserves are insufficient for any reason, the required increase in reserves would be recorded as a charge against our earnings in the period in which reserves are determined to be insufficient.These charges could be substantial.
Our actual experience could vary from the key assumptions used to determine active life reserves for long term care policies.
Our active life reserves for long term care policies are based on our best estimate assumptions as of December 31, 2015,September 30, 2020, due to ana reserve unlocking at that date.Key assumptions include morbidity, persistency (the
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percentage of policies remaining in force), discount rate and future premium rate increases. These assumptions, which are critical basesEstimating future experience for long term care policies is highly uncertain because the adequacy of the reserves is contingent upon actual experience and our reserve estimates, are inherently uncertain. future expectations related to these key assumptions.If actual or expected future experience variesdiffers from these assumptions, or the future outlook for these assumptions changes, wereserves may not be adequate, requiring us to add reserves.The required increase in reserves would be recorded as a charge against our earnings in the period in which reserves are determined to increase our reserves. be insufficient.These charges could be substantial.See the Life & Group

Policyholder Reserves portion of Reserves - Estimates and Uncertainties section of MD&A in Item 7 for more information.
Estimating future experience for long term care policies is highly uncertain, because the required projection period is very long and there is limited historical and industry data available to us, as only a small portion of the long term care policies which have been written to date are in claims paying status. Morbidity and persistency trends,experience, inclusive of mortality, can be volatile and may be negatively affected by many factors including, but not limited to, policyholder behavior, judicial decisions regarding policy terms, socioeconomic factors, cost of care inflation, changes in health trends and advances in medical care.
A prolonged period during which interest ratesinvestment returns remain at levels lower than those anticipated in our reserving woulddiscount rate assumptions could result in shortfalls in investment income on assets supporting our obligations under long term care policies, which may require changesincreases to our reserves.This risk is more significant for our long term care products because the long potential duration of the policy obligations exceeds the duration of the supporting investment assets.Further, changes to the corporate tax codeInternal Revenue Code may also affect the rate at which we discount our reserves.In addition, we may not receive regulatory approval for the level of premium rate increases we request.Any adverse deviation between the level of future premium rate increases approved and the level included in our reserving assumptions may require an increase to our reserves.
If our estimated reservesWe are insufficient for any reason, including changes in assumptions, the required increase in reserves would be recorded as a charge against our earnings in the period in which reserves are determinedvulnerable to be insufficient. These charges could be substantial.material losses from natural and man-made disasters.
Catastrophe and systemic losses are unpredictable and could result in material losses.
Catastrophe losses are an inevitable part of our business.Various events can cause catastrophe losses.These events can be natural or man-made, and may include hurricanes, windstorms, earthquakes, hail, severe winter weather, fires, floods, riots, strikes, civil commotion, cyber attacks,unrest, cyber-attacks, pandemics and acts of terrorism.The frequency and severity of these catastrophe events are inherently unpredictable.In addition, longer-term natural catastrophe trends may be changing and new types of catastrophe losses may be developing due to climate change, a phenomenon that has been associated with extreme weather events linked to rising temperatures and includes effects on global weather patterns, greenhouse gases, sea, land and air temperatures, sea levels, rain, hail and snow.
The extent of our losses from catastrophes is a function of the total amount of our insured exposures in the affected areas, the frequency and severity of the events themselves, the level of reinsurance assumed and ceded,coverage, reinsurance reinstatement premiums and state residual market assessments, if any.It can take a long time for the ultimate cost of any catastrophe losses to us to be finally determined, as a multitude of factors contribute to such costs, including evaluation of general liability and pollution exposures, infrastructure disruption, business interruption and reinsurance collectibility.Further, significant catastrophic events or a series of catastrophic events have the potential to impose financial stress on the reinsurance industry, which could impact our ability to collect amounts owed to us by reinsurers, thereby resulting in higher net incurred losses.
Reinsurance coverage for terrorism events is provided only in limited circumstances, especially in regard to “unconventional” terrorism acts, such as nuclear, biological, chemical or radiological attacks.Our principal reinsurance protection against these large-scale terrorist attacks is the coverage currently provided through the Terrorism Risk Insurance Program Reauthorization Act of 2019 (TRIPRA) through December 31, 2027.However, such coverage is subject to a mandatory deductible and other limitations.It is also possible that future legislation could change or eliminate the program, which could adversely affect our business by increasing our exposure to terrorism losses, or by lowering our business volume through efforts to avoid that exposure.For a further discussion of TRIPRA, see Part II, Item 7, MD&A - Catastrophes and Related Reinsurance.
As a result of the items discussed above, catastrophe losses are particularly difficult to estimate. Additionally, catastrophic eventsestimate, could cause us to exhaust our available reinsurance limits and could adversely affect the cost and availability of reinsurance.
Claim frequency
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Accordingly, catastrophic events could have a material adverse effect on our business, results of operations, financial condition and severity for someliquidity.
The COVID-19 pandemic and measures to mitigate the spread of the virus have resulted in increased claims and related litigation risk across our enterprise, which may continue to have adverse impacts on our business, results of operations and financial condition and could be material.
We have experienced, and may continue to experience, increased claim submissions and litigation related to denial of claims based on policy coverage or the facts of the claim, in certain lines of business canthat are implicated by the pandemic and mitigating actions taken by our customers and governmental authorities in response to its spread.These lines include primarily healthcare professional liability, workers' compensation, commercial property related business interruption coverage, management liability (directors and officers, employment practices, and professional liability lines) and trade credit.We recorded significant losses during 2020, the majority of which are classified as incurred but not reported (IBNR) reserves, in these areas and may experience continued losses, which could be correlated to an external factor such as economic activity, financial market volatility, increasing health care costsmaterial.
Increased frequency or changesseverity in the legalany or regulatory environment. Claim frequency and severity can also be correlated to insureds' use of common business practices, equipment, vendors or software. This can result in multiple insured losses emanating outall of the same underlying cause. In these instances, weforegoing lines, or others where the exposure has yet to emerge, may be subject to increased claim frequency and severity across multiple policies or lines of business concurrently. While we do not define such systemic losses as catastrophes for financial reporting purposes, they are similar to catastrophes in terms of the uncertainty and potentialhave a material impact on our results.business, results of operations and financial condition.
We have incurred and may continue to incur substantial expenses related to litigation activity in connection with COVID-related legal claims.These actions primarily relate to denial of claims submitted as a result of the pandemic and the mitigating actions under commercial property policies for business interruption coverage, including lockdowns and closing of certain businesses.The significance of such litigation, both in substance and volume,and the resultantactivities we have initiated, including external counsel engagement, and the costs related thereto, may have a material impact on our business, results of operations and financial condition.
We have exposures related to asbestos and environmental pollution (A&EP) claims, which could result in material losses.
Our property and casualty insurance subsidiaries have exposures related to A&EP claims.Our experience has been that establishing claim and claim adjustment expense reserves for casualty coverages relating to A&EP claims is subject to uncertainties that are greater than those presented by other claims.Additionally, traditional actuarial

methods and techniques employed to estimate the ultimate cost of claims for more traditional property and casualty exposures are less precise in estimating claim and claim adjustment expense reserves for A&EP.As a result, estimating the ultimate cost of both reported and unreported A&EP claims is subject to a higher degree of variability.On August 31, 2010, we completed a retroactive reinsurance transaction under which substantially all of our legacy A&EP liabilities were ceded to National Indemnity Company (NICO), a subsidiary of Berkshire Hathaway Inc., subject to an aggregate limit of $4 billion (Loss Portfolio Transfer).The cumulative amount ceded under the Loss Portfolio Transfer as of December 31, 2017 is $2.92021 was $3.4 billion.If the other parties to the Loss Portfolio Transfer do not fully perform their obligations, net losses incurred on A&EP claims covered by the Loss Portfolio Transfer exceed the aggregate limit of $4 billion, or we determine we have exposures to A&EP claims not covered by the Loss Portfolio Transfer, we may need to increase our recorded net reserves which would result in a charge against our earnings.These charges could be substantial.Additionally, if the A&EP claims exceed the limit of the Loss Portfolio Transfer, we will need to assess whether to purchase additional limit or to reassume claim handling responsibility for A&EP claims from an affiliate of NICO.Any additional reinsurance premium or future claim handling costs would also reduce our earnings.
We use analytical models to assist our decision making in key areas such as pricing, reserving and capital modeling and may be adversely affected if actual results differ materially from the model outputs and related analyses.
We use various modeling techniques and data analytics (e.g., scenarios, predictive, stochastic and/or forecasting) to analyze and estimate exposures, loss trends and other risks associated with our assets and liabilities. This includes both proprietary and third party modeled outputs and related analyses to assist us in decision-making related to underwriting, pricing, capital allocation, reserving, investing, reinsurance and catastrophe risk, among other things. We incorporate numerous assumptions and forecasts about the future level and variability of policyholder behavior, loss frequency and severity, interest rates, equity markets, inflation, capital requirements, and currency exchange rates, among others. The modeled outputs and related analyses from both proprietary and third parties are subject to various assumptions, uncertainties, model design errors and the inherent limitations of any statistical analysis, including those arising from the use of historical internal and industry data and assumptions.
In addition, the effectiveness of any model can be degraded by operational risks including, but not limited to, the improper use of the model, including input errors, data errors and human error. As a result, actual results may differ materially from our modeled results. The profitability and financial condition of the Company substantially depends on the extent to which our actual experience is consistent with assumptions we use in our models and ultimate model outputs. If, based upon these models or other factors, we misprice our products or fail to appropriately estimate the risks we are exposed to, and may face adverse developments related to, mass tort claims that could arise from our insureds’ sale or use of potentially harmful products or substances, changes to the social and legal environment, issues related to altered interpretation of coverage and other new and emerging claim theories.
We face potential exposure to various types of new and emerging mass tort claims, including those related to exposure to potentially harmful products or substances such as glyphosate, lead paint and opioids; claims arising from changes that expand the right to sue, remove limitations on recovery, extend the statutes of
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limitations or otherwise repeal or weaken tort reforms, such as those related to abuse reviver statutes, including New York reviver statutes; and claims related to new and emerging theories of liability, such as those related to global warming and climate change.Evolving judicial interpretations and new legislation regarding the application of various tort theories and defenses, including application of various theories of joint and several liability, as well as the application of insurance coverage to these claims, give rise to new claimant activity.Emerging mass tort claim activity, including activity based on such changing judicial interpretations and recent and proposed legislation, could have a material adverse effect on our business, financial condition, results of operations or liquidity may be adversely affected.and financial condition.
Strategic Risks
We face intense competition in our industry; we may be adversely affected by the cyclical nature of the property and casualty business and the evolving landscape of our distribution network.
All aspects of the insurance industry are highly competitive and we must continuously allocate resources to refine and improve our insurance products and services to remain competitive. We compete with a large number of stock and mutual insurance companies and other entities, some of which may be larger or have greater financial or other resources than we do, for both distributors and customers. This includes agents, brokers and brokersmanaging general underwriters who may increasingly compete with us to the extent that markets continue to provide them with direct access to providers of capital seeking exposure to insurance risk. Insurers compete on the basis of many factors, including products, price, services, ratings and financial strength. The competitor landscape has evolved substantially in recent years, with significant consolidation and new market entrants, such as insurtech firms, resulting in increased pressures on our ability to remain competitive, particularly in implementingobtaining pricing that is both attractive to our customer base and risk-appropriate to us.
In addition, the property and casualty market is cyclical and has experienced periods characterized by relatively high levels of price competition, resulting in less restrictive underwriting standards and relatively low premium rates, followed by periods of relatively lower levels of competition, more selective underwriting standards and relatively high premium rates. During periods in which price competition is high, we may lose business to competitors offering competitive insurance products at lower prices. As a result, our premium levels and expense ratio could be materially adversely impacted.

We market our insurance products worldwide primarily through independent insurance agents, and insurance brokers, and managing general underwriters who also promote and distribute the products of our competitors. Any change in our relationships with our distribution network agents, and brokers or managing general underwriters, including as a result of consolidation and their increased promotion and distribution of our competitors' products, could adversely affect our ability to sell our products. As a result, our business volume and results of operations could be materially adversely impacted.
Our underwriting strategies currently rely on the effectiveness of reinsurance arrangements and we accordingly face risks relating to reinsurance, including obtaining reinsurance at a cost or on terms and conditions we deem acceptable, reinsurance counterparty risk and ineffective reinsurance coverage.
A primary reason we purchase reinsurance is to manage our exposure to risk, thereby facilitating our underwriting strategies in certain key areas.Under our ceded reinsurance arrangements, a reinsurer assumes a specified portion of our exposure in exchange for a specified portion of policy premiums.Market conditions determine the availability and cost of the reinsurance protection we purchase, which affects the volatility of our business and profitability, as well as the level and types of risk we retain.If we are unable to obtain sufficient reinsurance at a cost or on terms and conditions we deem acceptable, our risk exposure will not be mitigated or we may forego such increased risk, thereby adversely impacting our underwriting strategies.In addition, use of reinsurance exposes us to credit risk of the reinsurers, as the reinsurance arrangements do not relieve us of the liability to the customer.If a reinsurer is unable to meet its financial obligations under a reinsurance arrangement, we will remain obligated under the original policies issued to our customers.Furthermore, while we use various risk management methods, including the use of reinsurance, to effectively manage risk, there is the possibility that one or more natural catastrophes and/or terrorism or other events could result in claims
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substantially exceeding expectations, thereby making the reinsurance strategy significantly less effective.Such reinsurance-related risks could have a material adverse effect on our business, results of operations and financial condition and adversely affect our underwriting strategies in certain lines of business.
We may be adversely affected by technological changes or disruptions in the insurance marketplace.
Technological changes in the way insurance transactions are completed in the marketplace, and our ability to react effectively to such change, may present significant competitive risks. For example, more insurers are utilizing "big data" analytics to make underwriting and other decisions that impact product design and pricing. If such utilization is more effective than how we use similar data and information, we will be at a competitive disadvantage. There can be no assurance that we will continue to compete effectively with our industry peers due to technological changes; accordingly, this may have a material adverse effect on our business, and results of operations.operations and financial condition.
In addition, agents and brokers, technology companies, or other third parties may create alternate distribution channels for commercial business that may adversely impact product differentiation and pricing. For example, they may create a digitally enabled distribution channel that may adversely impact our competitive position. Our efforts or the efforts of agents and brokers with respect to new products or alternate distribution channels, as well as changes in the way agents and brokers utilize greater levels of data and technology, could adversely impact our business relationship with independent agents and brokers who currently market our products, resulting in a lower volume and/or profitability of business generated from these sources.
We face considerable competition within our industry for qualified, specialized talent and any significant inability to attract and retain talent may not be ableadversely affect the execution of our business strategies.
The successful execution of our business plan depends on our ability to obtain sufficient reinsurance atattract and retain qualified talent. Due to the intense competition in our industry and from businesses outside the industry for qualified employees, especially those in key positions and those possessing highly specialized knowledge and industry experience in areas such as underwriting, data and analytics and technology, we may encounter obstacles to our ability to attract and retain such employees, which could materially adversely affect our business, results of operations and financial condition.
We are controlled by a cost we deem acceptable,single stockholder which could result in increased exposure to risk or a decrease in our underwriting commitments.potential conflicts of interest.
We purchase reinsurance to help manage our exposure to risk. Under our ceded reinsurance arrangements, another insurer assumes a specified portionLoews beneficially owned approximately 89.6% of our exposureoutstanding shares of common stock as of December 31, 2021, and is in exchange for a specified portionposition to control actions that require the consent of policy premiums. Market conditions determinestockholders, including the availabilityelection of directors, amendment of our Restated Certificate of Incorporation and costany merger or sale of substantially all of our assets. In addition, four officers of Loews, along with the Co-Chairman of the reinsurance protection we purchase, which affects the levelBoard of Loews, serve on our businessBoard of Directors. We have also entered into services agreements and profitability, as well as the levela registration rights agreement with Loews, and types of risk we retain. If we are unable to obtain sufficient reinsurance at a cost we deem acceptable, we may have increased exposure to risk. Alternatively, we may be unwilling to bear the increased risk and would reduce the level of our underwriting commitments.
We may not be able to collect amounts owed to us by reinsurers, which could result in higher net incurred losses.
We have significant amounts recoverable from reinsurers which are reported as receivables on our Consolidated Balance Sheets and are estimated in a manner consistent with claim and claim adjustment expense reserves or future policy benefit reserves. The ceding of insurance does not, however, discharge our primary liability for claims. As a result, we are subject to credit risk relating to our ability to recover amounts due from reinsurers. Certain of our reinsurance carriers have experienced credit downgrades by rating agencies within the term of our contractual relationship, which indicates an increase in the likelihoodfuture enter into other agreements with Loews. It is possible that we will not be able to recover amounts due. In addition, reinsurerspotential conflicts of interest could dispute amounts which we believearise in the future for our directors who are due to us. If the amounts due from reinsurers that we are able to collect are less than the amount recorded by usalso officers and/or directors of Loews with respect to such amounts due, our net incurred losses will be higher.
We may not be able to collect amounts owed to us by policyholders who hold deductible policies and/or who purchase retrospectively rated policies, which could result in higher net incurred losses.
A portiona number of our business is written under deductible policies. Under these policies, we are obligated to pay the related insurance claims and are reimbursed by the policyholderareas relating to the extentpast and ongoing relationships of the deductible, which may be significant.Loews and us, including tax and insurance matters, financial commitments and sales of common stock pursuant to registration rights or otherwise.
Moreover, certain policyholders purchase retrospectively rated workers' compensation policies (i.e., policies in which premiums are adjusted after the policy period based on the actual loss experience of the policyholder during the policy period). Retrospectively rated policies expose us to additional credit risk to the extent that the adjusted premium is greater than the original premium, which may be significant. As a result, we are exposed to policyholder

credit risk. If the amounts due from policyholders that we are able to collect are less than the amounts recorded with respect to such amounts due, our incurred losses will be higher.Financial Risks
We may incur significant realized and unrealized investment losses and volatility in net investment income arising from changes in the financial markets.
Our investment portfolio is exposed to various risks, such as interest rate, credit spread, issuer default, equity prices and foreign currency, which are unpredictable. Financial markets are highly sensitive to changes in economic conditions, monetary policies, tax policies, domestic and international geopolitical issues and many other factors. Changes in financial markets including fluctuations in interest rates, credit, equity prices and foreign currency prices and many other factors beyond our control can adversely affect the value of our investments, the realization of investment income and the rate at which we discount certain liabilities. Our investment portfolio is also subject to increased valuation uncertainties when investment markets are illiquid. The valuation of investments is more subjective when markets are illiquid, thereby increasing the risk that the estimated fair value (i.e., the carrying amount) of the portion of our investment portfolio that is carried at fair value in our financial statements is not reflective of the prices at which actual transactions could occur.
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We have significant holdings in fixed incomematurity investments that are sensitive to changes in interest rates. A decline in interest rates may reduce the returns earned on new fixed incomematurity investments, thereby reducing our net investment income, while an increase in interest rates may reduce the value of our existing fixed maturity investments, which could reduce our net unrealized gains included in Accumulated other comprehensive income investments.(AOCI). The value of our fixed incomematurity investments is also subject to risk that certain investments may default or become impaired due to deterioration in the financial condition of issuers of the investments we hold or in the underlying collateral of the security. Any such impairments which we deem to be other-than-temporary would result in a charge to our earnings.
In addition, we invest a portion of our assets in limited partnerships and common stock which are subject to greater market volatility than our fixed incomematurity investments. Limited partnership investments generally provide a lower level of liquidity than fixed maturity or equity investments which may also limit our ability to withdraw assets.funds from these investments. The timing and amount of income or losses on such investments is inherently variable and can contribute to volatility in reported earnings.
Further, we hold a portfolio of commercial mortgage loans. We are subject to risk related to the recoverability of loan balances, which is influenced by declines in the estimated cash flows from underlying property leases, fair value of collateral, refinancing risk and the creditworthiness of tenants of credit tenant loan properties, where lease payments directly service the loan. Collecting amounts from borrowers that are less than the amounts recordedAny changes in actual or expected collections would result in a charge to our earnings.
As a result of these factors, we may not earn an adequate return on our investments, may be required to write down the value of our investments and may incur losses on the disposition of our investments.
Changes in tax laws of jurisdictions in which we operate could adversely impact our results of operations.
Federal, state or foreign tax legislation that would lessen or eliminate some orinvestments all of the tax attributes currently affecting uswhich could materially and adversely impactaffect our business, results of operations and financial condition.
Operational Risks
We use analytical models to assist our decision making in particular, changeskey areas such as pricing, reserving, catastrophe risks and capital modeling and may be adversely affected if actual results differ materially from the model outputs and related analyses.
We use various modeling techniques and data analytics (e.g. scenarios, predictive, stochastic and/or forecasting) to tax laws governing tax credits. Other potential tax law changes,analyze and estimate exposures, loss trends and other risks associated with our assets and liabilities. This includes both proprietary and third-party modeled outputs and related analyses to assist us in decision-making related to underwriting, pricing, capital allocation, reserving, investing, reinsurance and catastrophe risk, among other things. We incorporate numerous assumptions and forecasts about the future level and variability of policyholder behavior, loss frequency and severity, interest rates, equity markets, inflation, capital requirements, and currency exchange rates, among others. The modeled outputs and related analyses from both proprietary models and third parties are subject to various assumptions, uncertainties, model design errors and the inherent limitations of any statistical analysis. Further, climate change may make modeled outcomes less certain or produce new, non-modeled risks.
In addition, the effectiveness of any model can be degraded by operational risks, including further modificationthe improper use of the corporate tax ratemodel, input errors, data errors and human error. As a result, actual results may differ materially from our modeled results. Our profitability and financial condition substantially depends on the taxationextent to which our actual experience is consistent with assumptions we use in our models and ultimate model outputs. If, based upon these models or other factors, we misprice our products or fail to appropriately estimate the risks we are exposed to, our business, results of interest from municipal bonds, could alsooperations and financial condition may be materially adversely affect the value of the tax benefit received on tax exempt municipal investments and thus the rate at which we discount our long term care active life reserves.affected.
Any significant interruption in the operation of our facilities, systems and business functions, facilities and systems or our vendors' facilities and systems could result in a materially adverse effect on our operations.operations.
Our business is highly dependent upon our ability to perform, in an efficient and uninterrupted manner, through our employees or vendor relationships and using our and their facilities and systems, necessary business functions, (suchsuch as internet support and 24-hour call centers),centers, processing new and renewal business, andproviding customer service, processing and paying claims and other obligations. obligations and issuing financial statements.
Our, or our vendors', facilities and systems could become unavailable, inoperable, or otherwise impaired from a variety of causes, including without limitation, natural events, such as hurricanes, tornadoes, windstorms, earthquakes, severe winter weather and fires, or other events, such as explosions, terrorist attacks, computer security breaches or cyber attacks,
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cyber-attacks, riots, hazardous material releases, medical epidemics or pandemics, utility outages, interruptions of our data processing and storage systems or the systems of third-party vendors, or unavailability of communications facilities. An interruption in our system availability occurred in March 2021 as a result of a cybersecurity attack we sustained. Please refer to the immediately following risk factor for further information regarding this incident. Likewise, we could experience a significant failure, interruption or corruption of one or more of our or our vendors' information technology, telecommunications, or other systems for various reasons, including significant failures or interruptions that might occur as existing systems are replaced or upgraded.
The shut-down or unavailability of one or more of our or our vendors’ systems or facilities for these or any reasonother reasons could significantly impair our ability to perform critical business functions onin a timely basis.
In addition, because our information technology

and telecommunications systems interface with and depend on third-party systems, we could experience service denials if demand for such service exceeds capacity or a third-party system fails or experiences an interruption. If sustained or repeated, such events could result in a deterioration of our ability to write and process new and renewal business, provide customer service, pay claims in a timely manner, or perform other necessary business functions, including the ability to issue financial statements in a timely manner. This could result in a materially adverse effect on our business results, prospects and liquidity, as well as damage to customer goodwill.functions.
The foregoing risks relating to disruption of service, interruption of operations and data loss could expose us to monetary and reputational damages. In addition, potentialPotential exposures resulting from the March 2021 cybersecurity attack, described in the immediately following risk, as well as any future incidents may include substantially increased compliance costs, and requiredas well as increased costs relating to investments in computer system upgrades and security-related investments.upgrades, with those costs potentially not recoverable under relevant insurance coverage. We anticipate making continued investments to improve our security and infrastructure, which are not recoverable under relevant insurance coverage. If our business continuity plans or system security do not sufficiently address these risks, they could have a material adverse effect on our business, results of operations and financial condition.
Any significant breach in our data security infrastructure or our vendors’ facilities and systems could result indisrupt business, cause financial losses and damage our reputation, and insurance coverage may not be available for claims related to a materially adverse effect on our operations.breach.
A significant breach of our data security infrastructure may result from actions by our employees, vendors, third-party administrators, or by unknown third parties. parties or through cyber-attacks. The risk of a breach can exist whether software services are in our data centers or are cloud-based software services. Breaches have occurred, and may occur again, in our systems and in the systems of our vendors and third-party administrators.
Such a breach could affect our data framework or cause a failure to protect the personal information of our customers, claimants or employees, or sensitive and confidential information regarding our business and may result in operational impairments and financial losses, as well as significant harm to our reputation.
The breach of confidential information also could give rise to legal liability and regulatory action under data protection and privacy laws, as well as evolving regulation in this regard,regard. During the third quarter of 2021, we were notified of a breach of certain systems of a third-party administrator, which resulted in breach notifications sent by such administrator to potentially impacted persons, including the recently issued New York Departmenta limited number of Financial Services cyber regulation. Anyour claimants. While we do not believe such legalnotifications and resultant actions will have a material adverse effect on our business, this or regulatory actionsimilar incidents, or any other such breach of our or our vendors’ data security infrastructure could have a material adverse effect on our business, results of operations and financial condition.
We sustained a sophisticated cybersecurity attack in March 2021 involving ransomware that caused a network disruption and impacted certain of our systems. Upon detection, we undertook steps to address the incident, including engaging a team of third-party forensic experts and notifying law enforcement and key regulators. We restored network systems and resumed normal operations. We are continuing to assess all actions that we will take to improve our existing systems.
Our investigation revealed that an unauthorized third party copied some personal information relating to certain current and former employees, contractor workers and their dependents and certain other persons, including some policyholders. In July 2021, we provided notifications to the impacted individuals and to regulators, in accordance with applicable law. Although we currently have no indication that the impacted data has been misused, or that CNA or its policyholder data was specifically targeted by the unauthorized third party, we may be subject to subsequent investigations, claims or actions in addition to other costs, fines, penalties, or other obligations related to impacted data, whether or not such data is misused. In addition, the misuse, or perceived
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misuse, of sensitive or confidential information regarding our business or policyholders could cause harm to our reputation and result in the loss of business with existing or potential customers, which could adversely impact our business, results of operations and financial condition.
Although we maintain cybersecurity insurance coverage insuring against costs resulting from cyber-attacks (including the March 2021 attack), we do not expect the amount available under our coverage policy to cover all losses. Costs and expenses incurred and that we are likely to incur in connection with the March 2021 attack include both direct and indirect costs and are not all covered by our insurance coverage. In addition, potential disputes with our insurers about the availability of insurance coverage for claims relating to the March 2021 attack or any future incident could occur. Further, as a result of the March 2021 attack, we incurred higher costs for the replenishment of our current policy through the end of the term, and we believe we will incur higher costs for future cybersecurity insurance coverage beyond the current term.
Based on the information currently known, we do not believe that the March 2021 cybersecurity attack will have a material impact on our business, results of operations or financial condition, but no assurances can be given as we continue to assess the full impact from the incident, including costs, expenses and insurance coverage. We may also be subject to future incidents that could have a material adverse effect on our business, results of operations or financial condition or may result in operational impairments and financial losses, as well as significant harm to our reputation.
Inability to detect and prevent significant employee or third partythird-party service provider misconduct, or inadvertent errors and omissions, or exposure relating to functions performed on our behalf could result in a materially adverse effect on our operations.business, results of operations and financial condition.
We may incur losses which arise from employees or third partythird-party service providers engaging in intentional, negligent or inadvertent misconduct, fraud, errors and omissions, failure to comply with internal guidelines, including with respect to underwriting authority, or failure to comply with regulatory requirements. Our or our third-party service providers' controls may not be able to detect all possible circumstances of employee and third party service provider non-compliantsuch noncompliant activity and the internal structures in place to prevent this activity may not be effective in all cases. Any losses relating to such non-compliant activity could adversely affect our business, results of operations.operations and financial condition.
Portions of our insurance business is underwritten and serviced by third parties. With respect to underwriting, our contractual arrangements with third parties will typically grant them limited rights to write new and renewal policies, subject to contractual restrictions and obligations, including requiring them to underwrite within the terms of our licenses. Should these third parties issue policies that exceed these contractual restrictions, we could be deemed liable for such policies and subject to regulatory fines and penalties for any breach of licensing requirements. It is possible that in such circumstance we might not be fully indemnified for such third parties’ contractual breaches.
Additionally, we rely on certain third-party claims administrators, including the administrators of our long term care claims, to handle policyholder services and perform significant claim administration and claim adjudication functions. Any failure by such administrator to properly perform service functions may result in losses as a result of over-payment of claims, legal claims against us and adverse regulatory enforcement exposure.
We have also licensed certain systems from third parties. We cannot be certain that we will have access to these systems or that our information technology or application systems will continue to operate as intended.
These risks could adversely impact our reputation and client relationships and have a material adverse effect on our business, results of operations and financial condition.

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Loss of key vendor relationships and issues relating to the transitioning of vendor relationships or exposure relatingcould compromise our ability to functions performed by a vendor could result in a materially adverse effect on our operations.conduct business.
In the event that one or more of our vendors suffers a bankruptcy, is sold to another entity, sustains a significant business interruption or otherwise becomes unable to continue to provide products or services at the requisite level, we may be adversely affected. We may suffer operational impairments and financial losses associated with transferring business to a new vendor, assisting a vendor with rectifying operational difficulties, failure by vendors to properly perform service functions or assuming previously outsourced operations ourselves. Our inability to provide for appropriate servicing if a vendor becomes unable to fulfill its contractual obligations to us, either through transitioning to another service provider temporarily or permanently or assuming servicing internally, may have a materially adverse effect on our operations.
Additionally, we rely on certain third-party claims administrators, including the administrators of our long term care claims, to perform significant claim administration and claim adjudication functions. Any failure by such administrator to properly perform service functions may result in losses as a result of over-payment of claims, legal claims against us and adverse regulatory enforcement exposure.
We face considerable competition within our industry for qualified, specialized talent and any significant inability to attract and retain talent may adversely affect the execution of our business, strategies.
The successful execution of our business plan depends on our ability to attract and retain qualified talent. Due to the intense competition in our industry for qualified employees with specialized industry experience, we may encounter obstacles to our ability to attract and retain such employees, which could adversely affect our results of operations.

operations and financial condition.
We are subject to capital adequacy requirements and, if we are unable to maintain or raise sufficient capital to meet these requirements, regulatory agencies may restrict or prohibit us from operating our business.
Insurance companies such as ours are subject to capital adequacy standards set by regulators to help identify companies that merit further regulatory attention. TheseIn the U.S., these standards apply specified risk factors to various asset, premium and reserve components of our legal entity statutory basis of accounting financial statements. Current rules, including those promulgated by insurance regulators and specialized markets, such as Lloyd's, require companies to maintain statutory capital and surplus at a specified minimum level determined using the applicable jurisdiction's regulatory capital adequacy formula. If we do not meet these minimum requirements, we may be restricted or prohibited from operating our business in the applicable jurisdictions and specialized markets. If we are required to record a material charge against earnings in connection with a change in estimated insurance reserves or the occurrence of a catastrophic event, or if we incur significant losses related to our investment portfolio, which severely deterioratedeteriorates our capital position, we may violate these minimum capital adequacy requirements unless we are able to raise sufficient additional capital. We may be limited in our ability to raise significant amounts of capital on favorable terms or at all.
Globally, insurance regulators are working cooperatively to developThe IAIS has adopted a common framework for the supervision of internationally active insurance groups. Finalizationgroups and continues to develop a group basis ICS. The NAIC is also developing a group capital standard that is intended to be comparable to the ICS. The development and adoption of this frameworkthese capital standards could increase our prescribed capital requirement, the level at which regulatory scrutiny intensifies, as well as significantly increase our cost of regulatory compliance.
Our insurance subsidiaries, upon whom we depend for dividends in order to fund our corporate obligations, are limited by insurance regulators in their ability to pay dividends.
We are a holding company and are dependent upon dividends, loans and other sources of cash from our subsidiaries in order to meet our obligations. Ordinary dividend payments, or dividends that do not require prior approval by the insurance subsidiaries' domiciliary insurance regulator, are generally limited to amounts determined by formulas that vary by jurisdiction. If we are restricted from paying or receiving intercompany dividends, by regulatory rule or otherwise, we may not be able to fund our corporate obligations and debt service requirements or pay our stockholders dividends from available cash. As a result, we would need to look topursue other sources of capital which may be more expensive or may not be available at all.
Rating agencies may downgrade their ratings of us, and thereby adversely affectaffecting our ability to write insurance at competitive rates or at all.all and increasing our cost of capital.
Ratings are an important factor in establishing the competitive position of insurance companies. Our insurance company subsidiaries, as well as our public debt, are rated by rating agencies, including, A.M. Best Company (A.M. Best), Moody's Investors Service, Inc. (Moody's) and, Standard & Poor's (S&P) and Fitch Ratings, Inc. (Fitch). Ratings reflect the rating agency's opinions of an insurance company's or insurance holding company's financial strength, capital adequacy, enterprise risk management practices, operating performance, strategic position and ability to meet its obligations to policyholders and debt holders.holders, and may also reflect opinions on other areas such as information security and ESG matters.

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The rating agencies may take action to lower our ratings in the future as a result of any significant financial loss or possible changes in the methodology or criteria applied by the rating agencies. The severity of the impact on our business is dependent on the level of downgrade and, for certain products, which rating agency takes the rating action. Among the adverse effects in the event of such downgrades would be the inability to obtain a material volume of business from certain major insurance brokers, the inability to sell a material volume of our insurance products to certain markets and the required collateralization of certain future payment obligations or reserves. Further, if one or more of our corporate debt ratings were downgraded, we may find it more difficult to access the capital markets and we may incur higher borrowing costs.
In addition, it is possible that a significant lowering of the corporate debt ratings of Loews by certain of the rating agencies could result in an adverse affecteffect on our ratings, independent of any change in our circumstances.
For further discussion of our ratings, see the Ratings subsection within the Liquidity and Capital Resources section of MD&A in Item 7.
We are subject to extensive existing state, local, federal and foreign governmental regulations that restrict our ability to do business and generate revenues; additional regulation or significant modification to existing regulations or failure to comply with regulatory requirements may have a materially adverse effect on our business, ourresults of operations and financial condition.
The insurance industry is subject to comprehensive and detailed regulation and supervision. Most insurance regulations are designed to protect the interests of our policyholders and third-party claimants, rather than our

investors. Each jurisdiction in which we do business has established supervisory agencies that regulate the manner in which we do business. Any changes in regulation could impose significant burdens on us. In addition, the Lloyd's marketplace sets rules under which its members, including our Hardy syndicate, operate.
These rules and regulations relate to, among other things, the standards of solvency (including risk-based capital measures), government-supported backstops for certain catastrophic events (including terrorism), investment restrictions, accounting and reporting methodology, establishment of reserves and potential assessments of funds to settle covered claims against impaired, insolvent or failed private or quasi-governmental insurers. In addition, rules and regulations have recently been introduced, or are being considered, in the areas of information security and ESG, which may also affect our business.
Regulatory powers also extend to premium rate regulations which require that rates not be excessive, inadequate or unfairly discriminatory. State jurisdictions ensure compliance with such regulations through market conduct exams, which may result in losses to the extent non-compliance is ascertained, either as a result of failure to document transactions properly or failure to comply with internal guidelines, or otherwise. The jurisdictions in which we do business may also require us to provide coverage to persons whom we would not otherwise consider eligible or restrict us from withdrawing from unprofitable lines of business or unprofitable market areas. Each jurisdiction dictates the types of insurance and the level of coverage that must be provided to such involuntary risks. Our share of these involuntary risks is mandatory and generally a function of our respective share of the voluntary market by line of insurance in each jurisdiction.

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ITEM 1B. UNRESOLVED STAFF COMMENTS
None.
ITEM 2. PROPERTIES
Our Chicago location housesWe lease our principal executive offices. We lease office spaceoffices in various citiesChicago, Illinois, as well as other property and casualty insurance offices throughout the United StatesU.S.  We also lease offices in Canada, the U.K., Belgium, Denmark, France, Germany, Italy, Luxembourg and the Netherlands, primarily for branch and insurance business operations in other countries. The following table sets forth certain information with respect to our principal officethose locations.
LocationAmount (Square Feet) of Space Leased and Occupied by CNAPrincipal Usage
333 S. Wabash Avenue, Chicago, Illinois421,403
Principal executive offices of CNAF
500 Colonial Center Parkway, Lake Mary, Florida82,169
Property and casualty insurance offices
1 Meridian Boulevard, Wyomissing, Pennsylvania52,611
Property and casualty insurance offices
125 S. Broad Street, New York, New York52,291
Property and casualty insurance offices
4150 N. Drinkwater Boulevard, Scottsdale, Arizona47,653
Property and casualty insurance offices
101 S. Reid Street, Sioux Falls, South Dakota44,565
Property and casualty insurance offices
20 Fenchurch St, London, U.K.27,212
Property and casualty insurance offices
675 Placentia Avenue, Brea, California25,447
Property and casualty insurance offices
700 N. Pearl Street, Dallas, Texas24,038
Property and casualty insurance offices
We lease all of the office space described above, including the building in Chicago, Illinois. We consider our properties to be in generally good condition, well maintained and suitable and adequate to carry on our business.
ITEM 3. LEGAL PROCEEDINGS
Information on our legal proceedings is set forth in Note F to the Consolidated Financial Statements included under Item 8.
ITEM 4. MINE SAFETY DISCLOSURES
Not applicable.

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PART II
ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES
Our common stock is listed on the New York Stock Exchange and the Chicago Stock Exchange under the symbol CNA.
As of February 9, 2018,4, 2022, we had 271,217,644271,365,221 shares of common stock outstanding and approximately 89%89.6% of our outstanding common stock was owned by Loews. We had 978834 stockholders of record as of February 9, 20184, 2022 according to the records maintained by our transfer agent.
Our Board of Directors has approved an authorization to purchase, in the open market or through privately negotiated transactions, our outstanding common stock, as our management deems appropriate. No repurchases of our common stock were made in 2017 or 2016.
The table below shows the high and low closing prices for our common stock based on the New York Stock Exchange Composite Transactions, as well as the dividends declared on our common stock.
 2017 2016
Quarter:High Low 
Dividends
Declared
 High Low 
Dividends
Declared
First$44.57
 $40.21
 $2.25
 $34.60
 $28.21
 $2.25
Second48.75
 43.30
 0.25
 33.07
 29.42
 0.25
Third53.28
 46.27
 0.30
 34.86
 30.37
 0.25
Fourth54.98
 49.99
 0.30
 42.07
 34.04
 0.25
three months ended December 31, 2021.
The following graph compares the five-year total return of our common stock, the Standard & Poor's 500 (S&P 500) Index and the S&P 500 Property & Casualty Insurance Index. The graph assumes that the value of the investment in our common stock and each index was $100 at the base period, January 1, 2013,2017, and that dividends, if any, were reinvested.reinvested in the stock or index.
Company / IndexBase Period20172018201920202021
CNA Financial Corporation$100.00 $136.94 $121.65 $133.19 $126.01 $149.96 
S&P 500 Index100.00 121.83 116.49 153.17 181.35 233.41 
S&P 500 Property & Casualty Insurance Index100.00 122.39 116.64 146.82 157.04 187.31 
cna-20211231_g1.jpg
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Company / IndexBase Period 2013 2014 2015 2016 2017
CNA Financial Corporation$100.00
 $156.63
 $148.42
 $144.91
 $188.40
 $257.84
S&P 500 Index100.00
 133.29
 150.51
 152.59
 170.84
 208.14
S&P 500 Property & Casualty Insurance Index100.00
 138.29
 160.06
 175.32
 202.85
 248.27


ITEM 6. SELECTED FINANCIAL DATA[RESERVED]
The following table presents selected financial data. The table should be read in conjunction with Item 7 Management's Discussion and Analysis of Financial Condition and Results of Operations and Item 8 Financial Statements and Supplementary Data of this Form 10-K.
As of or for the years ended December 31         
(In millions, except per share data)2017 2016 2015 2014 2013
Results of Operations:         
Revenues$9,542
 $9,366
 $9,101
 $9,692
 $9,932
Income (loss) from continuing operations, net of tax$899
 $859
 $479
 $888
 $915
(Loss) income from discontinued operations, net of tax
 
 
 (197) 22
Net income (loss)$899
 $859
 $479
 $691
 $937
Basic Earnings (Loss) Per Share:         
Income (loss) from continuing operations$3.32
 $3.18
 $1.77
 $3.29
 $3.39
(Loss) income from discontinued operations
 
 
 (0.73) 0.09
Basic earnings (loss) per share$3.32
 $3.18
 $1.77
 $2.56
 $3.48
Diluted Earnings (Loss) Per Share:         
Income (loss) from continuing operations$3.30
 $3.17
 $1.77
 $3.28
 $3.39
(Loss) income from discontinued operations
 
 
 (0.73) 0.08
Diluted earnings (loss) per share$3.30
 $3.17
 $1.77
 $2.55
 $3.47
Dividends declared per common share$3.10
 $3.00
 $3.00
 $2.00
 $0.80
Financial Condition:         
Total investments$46,870
 $45,420
 $44,699
 $46,262
 $46,107
Total assets56,567
 55,233
 55,045
 55,564
 57,192
Insurance reserves37,212
 36,431
 36,486
 36,380
 38,394
Long and short term debt2,858
 2,710
 2,560
 2,557
 2,558
Stockholders' equity12,244
 11,969
 11,756
 12,794
 12,651
Book value per common share$45.15
 $44.25
 $43.49
 $47.39
 $46.91


ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
2020 Compared with 2019
This section of this Form 10-K generally discusses 2021 and 2020 results and year-to-year comparisons between 2021 and 2020. With the exception of our Commercial and Corporate & Other business segments where we changed the segment presentation of a legacy portfolio of excess workers' compensation policies and certain legacy mass tort reserves effective January 1, 2021, a discussion of changes in our results of operations from 2020 to 2019 has been omitted from this Form 10-K, but may be found in “Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our Form 10-K for the year ended December 31, 2020, filed with the SEC on February 9, 2021.
Index to this MD&A
Management's discussion and analysis of financial condition and results of operations is comprised of the following sections:

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OVERVIEW
The following discussion should be read in conjunction with Part I, Item 1A Risk Factors Item 6 Selected Financial Data and Part II, Item 8 Financial Statements and Supplementary Data of this Form 10-K.
CRITICAL ACCOUNTING ESTIMATES
The preparation of Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America (GAAP)GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements and the amount of revenues and expenses reported during the period. Actual results may differ from those estimates.
Our Consolidated Financial Statements and accompanying notes have been prepared in accordance with GAAP applied on a consistent basis. We continually evaluate the accounting policies and estimates used to prepare the Consolidated Financial Statements. In general, our estimates are based on historical experience, evaluation of current trends, information from third-party professionals and various other assumptions that are believed to be reasonable under the known facts and circumstances.
The accounting estimates discussed below are considered by us to be critical to an understanding of our Consolidated Financial Statements as their application places the most significant demands on our judgment. Note A to the Consolidated Financial Statements included under Item 8 should be read in conjunction with this section to assist with obtaining an understanding of the underlying accounting policies related to these estimates. Due to the inherent uncertainties involved with these types of judgments, actual results could differ significantly from our estimates and may have a material adverse impact on our results of operations, financial condition, equity, business, and insurer financial strength and corporate debt ratings.
Insurance Reserves
Insurance reserves are established for both short and long-duration insurance contracts. Short-duration contracts are primarily related to property and casualty insurance policies where the reserving process is based on actuarial estimates of the amount of loss, including amounts for known and unknown claims. Long-duration contracts are primarily related to long term care policies and are estimated using actuarial estimates about morbidity and persistency as well as assumptions about expected investment returns and future premium rate increases. The reserve for unearned premiums on property and casualty contracts represents the portion of premiums written related to the unexpired terms of coverage. The reserving process is discussed in further detail in the Reserves-Estimates and Uncertainties section below.
Long Term Care Reserves
Future policy benefit reserves for our long term care policies are based on certain assumptions, including morbidity, persistency, inclusive of mortality, discount rates and future premium rate increases. The adequacy of the reserves is contingent upon actual experience and our future expectations related to these key assumptions. If actual or expected future experience differs from these assumptions, the reserves may not be adequate, requiring us to add to reserves.
A prolonged period during which investment returns remain at levels lower than those anticipated in our reserving discount rate assumption could result in shortfalls in investment income on assets supporting our obligations under long term care policies, which may require increases to our reserves. In addition, we may not receive regulatory approval for the level of premium rate increases we request.
These changes to our reserves could materially adversely impact our results of operations, financial condition and equity. The reserving process is discussed in further detail in the Reserves - Estimates and Uncertainties section below.
Reinsurance and Insurance Receivables
Exposure exists with respect to the collectibility of ceded property and casualty and life reinsurance to the extent that any reinsurer is unable to meet its obligations or disputes the liabilities we have ceded under reinsurance agreements. An allowance for uncollectible reinsurance is recorded on the basis of periodic evaluations of balances due from reinsurers, reinsurer financial strength rating and solvency, industry
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experience and current and forecast economic conditions. Further information on our reinsurance receivables is in Note G to the Consolidated Financial Statements included under Item 8.
Additionally, exposure exists with respect to the collectibility of amounts due from policyholders related to insurance contracts, including amounts due from insureds under high deductible policies and retrospectively rated policies. An allowance for uncollectible insurance receivables is recorded on the basis of periodic evaluations of balances due from insureds, currently as well as in the future, historical business default data, management's experience and current and forecast economic conditions.
If actual experience differs from the estimates made by management in determining the allowances for uncollectible reinsurance and insurance receivables, net receivables as reflected on our Consolidated Balance Sheets may not be collected. Therefore, our results of operations, financial condition or equity could be materially adversely affected.

Further information on our process for determining the allowances for uncollectible reinsurance and insurance receivables is in Note A to the Consolidated Financial Statements included under Item 8.
Valuation of Investments and Impairment of Securities
We classify ourOur fixed maturity securities and equity securities as either available-for-sale or trading, which are both carried at fair value on the balance sheet. Fair value represents the price that would be received in a sale of an asset in an orderly transaction between market participants on the measurement date, the determination of which requiresmay require us to make a significant number of assumptions and judgments. Securities with the greatest level of subjectivity around valuation are those that rely on inputs that are significant to the estimated fair value and that are not observable in the market or cannot be derived principally from or corroborated by observable market data. These unobservable inputs are based on assumptions consistent with what we believe other market participants would use to price such securities. Further information on our fair value measurements is in Note C to the Consolidated Financial Statements included under Item 8.
Our investment portfolio isfixed maturity securities are subject to market declines below amortized cost that may be other-than-temporary and therefore result in the recognition of impairment losses in earnings. Factors considered in the determination of whether or not a declinean impairment loss is other-than-temporaryrecognized in earnings include a current intention or need to sell the security or an indication that a credit loss exists. Significant judgment exists regardingis required in the evaluationdetermination of whether a credit loss has occurred for a security. We consider all available evidence when determining whether a security requires a credit allowance to be recorded, including the financial condition and expected near-term and long-term prospects of the issuer, whether the relevantissuer is current with interest and principal payments, credit ratings on the security or changes in ratings over time, general market conditions, industry, conditions and trendssector or other specific factors and whether we expect to receive cash flows sufficient to recover the entire amortized cost basis of the security.
Our mortgage loan portfolio is subject to the expected credit loss model, which requires immediate recognition of estimated credit losses over the life of the asset and the presentation of the asset at the net amount expected to be collected. Significant judgment is required in the determination of estimated credit losses and any changes in our expectation of the net amount to be collected are recognized in earnings.
Further information on our process for evaluating impairments and expected credit losses is in Note A to the Consolidated Financial Statements included under Item 8.
Long Term Care Policies
Future policy benefit reserves for our long term care policies are based on certain assumptions, including morbidity, persistency, inclusive of mortality, discount rates and future premium rate increases. The adequacy of the reserves is contingent upon actual experience and our future expectations related to these key assumptions. If actual or expected future experience differs from these assumptions, the reserves may not be adequate, requiring us to add to reserves.
A prolonged period during which interest rates remain at levels lower than those anticipated in our reserving discount rate assumption could result in shortfalls in investment income on assets supporting our obligations under long term care policies, which may also require an increase to our reserves. In addition, we may not receive regulatory approval for the premium rate increases we request.
These changes to our reserves could materially adversely impact our results of operations and equity. The reserving process is discussed in further detail in the Reserves - Estimates and Uncertainties section below.
Income Taxes
We account for income taxes under the asset and liability method. Under this method, deferred income taxes are recognized for temporary differences between the financial statement and tax return basis of assets and liabilities. Any resulting future tax benefits are recognized to the extent that realization of such benefits is more likely than not, and a valuation allowance is established for any portion of a deferred tax asset that management believes will not be realized. The assessment of the need for a valuation allowance requires management to make estimates and assumptions about future earnings, reversal of existing temporary differences and available tax planning strategies. If actual experience differs from these estimates and assumptions, the recorded deferred tax asset may not be fully realized resulting in an increase to income tax expense in our results of operations. In addition, the ability to record deferred tax assets in the future could be limited, resulting in a higher effective tax rate in that future period.

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RESERVES - ESTIMATES AND UNCERTAINTIES
The level of reserves we maintain represents our best estimate, as of a particular point in time, of what the ultimate settlement and administration of claims will cost based on our assessment of facts and circumstances known at that time. Reserves are not an exact calculation of liability but instead are complex estimates that we derive, generally utilizing a variety of actuarial reserve estimation techniques, from numerous assumptions and expectations about future events, both internal and external, many of which are highly uncertain. As noted below, we review our reserves for each segment of our business periodically, and any such review could result in the need to increase reserves in amounts which could be material and could adversely affect our results of operations, equity, business and insurer financial strength and corporate debt ratings. Further information on reserves is provided in Note E to the Consolidated Financial Statements included under Item 8.
Property and Casualty Claim and Claim Adjustment Expense Reserves
We maintain loss reserves to cover our estimated ultimate unpaid liability for claim and claim adjustment expenses, including the estimated cost of the claims adjudication process, for claims that have been reported but not yet settled (case reserves) and claims that have been incurred but not reported (IBNR).IBNR includes a provision for development on known cases as well as a provision for late reported incurred claims.Claim and claim adjustment expense reserves are reflected as liabilities and are included on the Consolidated Balance Sheets under the heading “Insurance Reserves.”Adjustments to prior year reserve estimates, if necessary, are reflected in results of operations in the period that the need for such adjustments is determined.The carried case and IBNR reserves as of each balance sheet date are provided in the Segment Results section of this MD&A and in Note E to the Consolidated Financial Statements included under Item 8.
As discussed in the Risk Factors discussion within Item 1A, there is a risk that our recorded reserves are insufficient to cover our estimated ultimate unpaid liability for claims and claim adjustment expenses. Unforeseen emerging or potential claims and coverage issues are also difficult to predict and could materially adversely affect the adequacy of our claim and claim adjustment expense reserves and could lead to future reserve additions.
In addition, our property and casualty insurance subsidiaries also have actual and potential exposures related to A&EP claims, which could result in material losses. To mitigate the risks posed by our exposure to A&EP claims and claim adjustment expenses, we completed a transaction with NICO under which substantially all of our legacy A&EP liabilities were ceded to NICO effective January 1, 2010. See Note E to the Consolidated Financial Statements included under Item 8 for further discussion about the transaction with NICO, its impact on our results of operations and the deferred retroactive reinsurance gain.gains and the amount of remaining reinsurance limit.
Establishing Property & Casualty Reserve Estimates
In developing claim and claim adjustment expense (“loss”(loss or “losses”)losses) reserve estimates, our actuaries perform detailed reserve analyses that are staggered throughout the year.The data is organized at a reserve group level.A reserve group typically can be a line of business covering a subset of insureds such as commercial automobile liability for small or middle market customers it can encompass several lines of business provided to a specific set of customers such as aging services, or it can be a particular type of claim such as construction defect.Every reserve group is reviewed at least once during the year. year, but most are reviewed more frequently.The analyses generally review losses gross of ceded reinsurance and apply the ceded reinsurance terms to the gross estimates to establish estimates net of reinsurance.In addition to the detailed analyses, we review actual loss emergence for all products each quarter.
Most of our business can be characterized as long-tail.For long-tail business, it will generally be several years between the time the business is written and the time when all claims are settled.Our long-tail exposures include commercial automobile liability, workers' compensation, general liability, medical professional liability, other professional liability and management liability coverages, assumed reinsurance run-off and products liability.Short-tail exposures include property, commercial automobile physical damage, marine, surety and
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warranty.Specialty, Commercial and International contain both long-tail and short-tail exposures.Corporate & Other contains run-off long-tail exposures.
Various methods are used to project ultimate losses for both long-tail and short-tail exposures.
The paid development method estimates ultimate losses by reviewing paid loss patterns and applying them to accident or policy years with further expected changes in paid losses.Selection of the paid loss pattern may require

consideration of several factors, including the impact of economic, social and medical inflation on claimsclaim costs, the rate at which claims professionals make claim payments and close claims, the impact of judicial decisions, the impact of underwriting changes, the impact of large claim payments and other factors.Claim cost inflation itself may require evaluation of changes in the cost of repairing or replacing property, changes in the cost of medical care, changes in the cost of wage replacement, judicial decisions, legislative changes and other factors.Because this method assumes that losses are paid at a consistent rate, changes in any of these factors can affect the results.Since the method does not rely on case reserves, it is not directly influenced by changes in their adequacy.
For many reserve groups, paid loss data for recent periods may be too immature or erratic for accurate predictions.This situation often exists for long-tail exposures.In addition, changes in the factors described above may result in inconsistent payment patterns.Finally, estimating the paid loss pattern subsequent to the most mature point available in the data analyzed often involves considerable uncertainty for long-tail products such as workers' compensation.
The incurred development method is similar to the paid development method, but it uses case incurred losses instead of paid losses. Since the method uses more data (case reserves in addition to paid losses) than the paid development method, the incurred development patterns may be less variable than paid patterns.However, selection of the incurred loss pattern typically requires analysis of all of the same factors described above.In addition, the inclusion of case reserves can lead to distortions if changes in case reserving practices have taken place, and the use of case incurred losses may not eliminate the issues associated with estimating the incurred loss pattern subsequent to the most mature point available.
The loss ratio method multiplies earned premiums by an expected loss ratio to produce ultimate loss estimates for each accident or policy year.This method may be useful for immature accident or policy periods or if loss development patterns are inconsistent, losses emerge very slowly or there is relatively little loss history from which to estimate future losses.The selection of the expected loss ratio typically requires analysis of loss ratios from earlier accident or policy years or pricing studies and analysis of inflationary trends, frequency trends, rate changes, underwriting changes and other applicable factors.
The Bornhuetter-Ferguson method using paid loss is a combination of the paid development method and the loss ratio method.This method normally determines expected loss ratios similar to the approach used to estimate the expected loss ratio for the loss ratio method and typically requires analysis of the same factors described above.This method assumes that future losses will develop at the expected loss ratio level.The percent of paid loss to ultimate loss implied from the paid development method is used to determine what percentage of ultimate loss is yet to be paid.The use of the pattern from the paid development method typically requires consideration of the same factors listed in the description of the paid development method.The estimate of losses yet to be paid is added to current paid losses to estimate the ultimate loss for each year.For long-tail lines, this method will react very slowly if actual ultimate loss ratios are different from expectations due to changes not accounted for by the expected loss ratio calculation.
The Bornhuetter-Ferguson method using incurred loss is similar to the Bornhuetter-Ferguson method using paid loss except that it uses case incurred losses.The use of case incurred losses instead of paid losses can result in development patterns that are less variable than paid patterns.However, the inclusion of case reserves can lead to distortions if changes in case reserving have taken place, and the method typically requires analysis ofthe same factors that need to be reviewed for the loss ratio and incurred development methods.
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The frequency times severity method multiplies a projected number of ultimate claims by an estimated ultimate average loss for each accident or policy year to produce ultimate loss estimates.Since projections of the ultimate number of claims are often less variable than projections of ultimate loss, this method can provide more reliable results for reserve groups where loss development patterns are inconsistent or too variable to be relied on exclusively.In addition, this method can more directly account for changes in coverage that affect the number and size of claims.However, this method can be difficult to apply to situations where very large claims or a substantial number of unusual claims result in volatile average claim sizes.Projecting the ultimate number of claims may require analysis of several factors, including the rate at which policyholders report claims to us, the impact of judicial decisions, the impact of underwriting changes and other factors.Estimating the ultimate average loss may require analysis of the impact of large losses and claim cost trends based on changes in the cost of repairing or replacing

property, changes in the cost of medical care, changes in the cost of wage replacement, judicial decisions, legislative changes and other factors.
Stochastic modeling produces a range of possible outcomes based on varying assumptions related to the particular reserve group being modeled.For some reserve groups, we use models which rely on historical development patterns at an aggregate level, while other reserve groups are modeled using individual claim variability assumptions supplied by the claims department.In either case, multiple simulations using varying assumptions are run and the results are analyzed to produce a range of potential outcomes.The results will typically include a mean and percentiles of the possible reserve distribution which aid in the selection of a point estimate.
For many exposures, especially those that can be considered long-tail, a particular accident or policy year may not have a sufficient volume of paid losses to produce a statistically reliable estimate of ultimate losses.In such a case, our actuaries typically assign more weight to the incurred development method than to the paid development method.As claims continue to settle and the volume of paid loss increases, the actuaries may assign additional weight to the paid development method. For most of our products, even the incurred losses for accident or policy years that are early in the claim settlement process will not be of sufficient volume to produce a reliable estimate of ultimate losses.In these cases, we may not assign much, if any, weight to the paid and incurred development methods.We may use the loss ratio, Bornhuetter-Ferguson and/or frequency times severity methods. For short-tail exposures, the paid and incurred development methods can often be relied on sooner, primarily because our history includes a sufficient number of years to cover the entire period over which paid and incurred losses are expected to change.However, we may also use the loss ratio, Bornhuetter-Ferguson and/or frequency times severity methods for short-tail exposures.
For other more complex reserve groups where the above methods may not produce reliable indications, we use additional methods tailored to the characteristics of the specific situation.
Periodic Reserve Reviews
The reserve analyses performed by our actuaries result in point estimates.Each quarter, the results of the detailed reserve reviews are summarized and discussed with senior management to determine the best estimate of reserves.Senior management considers many factors in making this decision.Our recorded reserves reflect our best estimate as of a particular point in time based upon known facts and circumstances, consideration of the factors cited above and our judgment.The carried reserve differs from the actuarial point estimate as discussed further below.
Currently, our recorded reserves are modestly higher than the actuarial point estimate.For Commercial, Specialty and International, the difference between our reserves and the actuarial point estimate is primarily driven by uncertainty with respect to immature accident years,claim cost inflation, changes in claims handling, changes to the tort environment which may adversely affect claim costs and the effects from the economy.For Corporate & Other, the difference between our reserves and the actuarial point estimate is primarily driven by the potential tail volatility of run-off exposures.
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The key assumptions fundamental to the reserving process are often different for various reserve groups and accident or policy years.Some of these assumptions are explicit assumptions that are required of a particular method, but most of the assumptions are implicit and cannot be precisely quantified.An example of an explicit assumption is the pattern employed in the paid development method.However, the assumed pattern is itself based on several implicit assumptions such as the impact of inflation on medical costs and the rate at which claim professionals close claims.As a result, the effect on reserve estimates of a particular change in assumptions typically cannot be specifically quantified, and changes in these assumptions cannot be tracked over time.
Our recorded reserves are management's best estimate.In order to provide an indication of the variability associated with our net reserves, the following discussion provides a sensitivity analysis that shows the approximate estimated impact of variations in significant factors affecting our reserve estimates for particular types of business.These significant factors are the ones that we believe could most likely materially affect the reserves.This discussion covers the major types of business for which we believe a material deviation to our reserves is reasonably possible.There can be no assurance that actual experience will be consistent with the current assumptions or with the variation indicated by the discussion.In addition, there can be no assurance that other factors and assumptions will not have a material impact on our reserves.

The three areas for which we believe a significant deviation to our net reserves is reasonably possible are (i) professional liability, management liability and surety products; (ii) workers' compensation; and (iii) general liability.
Professional liability, management liability and surety products include US professional liability coverages provided to various professional firms, including architects, real estate agents, small and mid-sized accounting firms, law firms and other professional firms.They also include directors and officers (D&O), employment practices, fiduciary, fidelity and surety coverages, as well as insurance products serving the healthcare delivery system. and medical liability.The most significant factor affecting reserve estimates for these liability coverages is claim severity.Claim severity is driven by the cost of medical care, the cost of wage replacement, legal fees, judicial decisions, legislative changes and other factors.Underwriting and claim handling decisions, such as the classes of business written and individual claim settlement decisions, can also affect claim severity. If the estimated claim severity increases by 9%, we estimate that net reserves would increase by approximately $450 million. If the estimated claim severity decreases by 3%, we estimate that net reserves would decrease by approximately $150 million. Our net reserves for these products were approximately $5.0 billion as of December 31, 2017.2021.
For workers' compensation, since many years will pass from the time the business is written until all claim payments have been made, the most significant factor affecting workers' compensation reserve estimates is claim cost inflation on claim payments.Workers' compensation claim cost inflation is driven by the cost of medical care, the cost of wage replacement, expected claimant lifetimes, judicial decisions, legislative changes and other factors.If estimated workers' compensation claim cost inflation increases by 100 basis points for the entire period over which claim payments will be made, we estimate that our net reserves would increase by approximately $350 million.If estimated workers' compensation claim cost inflation decreases by 100 basis points for the entire period over which claim payments will be made, we estimate that our net reserves would decrease by approximately $350 million.Our net reserves for workers' compensation were approximately $4.0$3.9 billion as of December 31, 2017.2021.
For general liability, the most significant factor affecting reserve estimates is claim severity.Claim severity is driven by changes in the cost of repairing or replacing property, the cost of medical care, the cost of wage replacement, judicial decisions, legislation and other factors.If the estimated claim severity for general liability increases by 6%, we estimate that our net reserves would increase by approximately $200 million.If the estimated claim severity for general liability decreases by 3%, we estimate that our net reserves would decrease by approximately $100 million.Our net reserves for general liability were approximately $3.3$3.2 billion as of December 31, 2017.2021.
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Given the factors described above, it is not possible to quantify precisely the ultimate exposure represented by claims and related litigation.As a result, we regularly review the adequacy of our reserves and reassess our reserve estimates as historical loss experience develops, additional claims are reported and settled and additional information becomes available in subsequent periods.In reviewing our reserve estimates, we make adjustments in the period that the need for such adjustments is determined.These reviews have resulted in our identification of information and trends that have caused us to change our reserves in prior periods and could lead to our identification of a need for additional material increases or decreases in claim and claim adjustment expense reserves, which could materially affect our results of operations, equity, business and insurer financial strength and corporate debt ratings positively or negatively.See discussion within Note E to the Consolidated Financial Statements included under Item 8 for additional information about reserve development and the Ratings section of this MD&A for further information regarding our financial strength and corporate debt ratings.
Life & Group Policyholder Reserves
Our Life & Group segment includes our run-off long term care business as well as structured settlement obligations not funded by annuities related to certain property and casualty claimants. Long term care policies provide benefits for nursing homes, assisted living facilities and home health care subject to various daily and lifetime caps. Generally, policyholders must continue to make periodic premium payments to keep the policy in force and we have the ability to increase policy premiums, subject to state regulatory approval.
We maintain both claim and claim adjustment expense reserves as well as future policy benefit reserves for policyholder benefits for our Life & Group segment. Claim and claim adjustment expense reserves consist of estimated reserves for long term care policyholders that are currently receiving benefits, including claims that have

been incurred but are not yet reported. In developing the claim and claim adjustment expense reserve estimates for our long term care policies, our actuaries perform a detailed claim experience studyreserve review on an annual basis. The study reviewsreview analyzes the sufficiency of existing reserves for policyholders currently on claim and includes an evaluation of expected benefit utilization and claim duration. In addition, claim and claim adjustment expense reserves are also maintained for the structured settlement obligations. In developing the claim and claim adjustment expense reserve estimates for our structured settlement obligations, our actuaries monitor mortality experience on an annual basis. Our recorded claim and claim adjustment expense reserves reflect management's best estimate after incorporating the results of the most recent study. In addition, claimreviews. Claim and claim adjustment expense reserves are also maintained for thelong term care policies and structured settlement obligations.obligations are discounted as discussed in Note A to the Consolidated Financial Statements included under Item 8.
Future policy benefit reserves representconsist of the active life reserves related to our long term care policies for policyholders that are not currently receiving benefits and arerepresent the present value of expected future benefit payments and expenses less expected future premium. The determination of these reserves is fundamental to our financial results and requires management to make estimates and assumptions about expected investment and policyholder experience over the life of the contract. The assumptions used to determine the active life reserves were unlocked as of December 31, 2015 in connection with the recognition of a premium deficiency. Since many of these contracts may be in force for several decades, these assumptions are subject to significant estimation risk.
The actuarial assumptions that management believes are subject to the most variability are morbidity, persistency, discount raterates and anticipated future premium rate increases. Morbidity is the frequency and severity of injury, illness, sickness and diseases contracted. Persistency is the percentage of policies remaining in force and can be affected by policy lapses, benefit reductions and death. Discount rate isrates are influenced by the investment yield on assets supporting long term care reserves which is subject to interest rate and market volatility and may also be affected by changes to the Internal Revenue Code. There is limited historical companyFuture premium rate increases are generally subject to regulatory approval, and industry data available to us for long term care morbiditytherefore the exact timing and mortality, as only a portionsize of the policies written to dateapproved rate increases are in claims paying status.unknown. As a result of this variability, our long term care reserves may be subject to material increases if actual experience develops adversely to our expectations.
Annually, in the third quarter, management assesses the adequacy of its long term care future policy benefit reserves by performing a gross premium valuation (GPV) to determine if there is a premium deficiency. Management also uses the GPV process to evaluate the adequacy of the claim and claim adjustment expense reserves for structured settlement obligations. Under the GPV, management estimates required reserves using best estimate assumptions as of the date of the assessment without provisions for adverse deviation. The GPV required reserves are then compared to the existing recorded reserves. If the GPV required reserves are greater than the existing recorded reserves, the
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existing assumptions are unlocked and future policy benefit reserves are increased to the greater amount. Any such increase is reflected in our results of operations in the period in which the need for such adjustment is determined, and could materially adversely affect our results of operations, equity and business and insurer financial strength and corporate debt ratings. Periodically, management engages independent third parties to assessdetermined. If the appropriateness of its best estimate assumptions and the associated GPV required reserves. The most recent assessment by an independent third party was performedreserves are less than the existing recorded reserves, assumptions remain locked in 2017.and no adjustment is required.
The December 31, 2017September 30, 2021 GPV indicated that our recorded reserves included a margin of approximately $246$72 million. A summary of the changes in the estimated reserve margin is presented in the table below:
Long Term Care Active Life Reserve - Change in estimated reserve margin (In millions)
September 30, 2020 Estimated Margin$— 
Changes in underlying discount rate assumptions(1)
65 
Changes in underlying morbidity assumptions205 
Changes in underlying persistency assumptions(233)
Changes in underlying premium rate action assumptions27 
Changes in underlying expense and other assumptions
September 30, 2021 Estimated Margin$72 
Long Term Care Active Life Reserve - Change in estimated reserve margin (In millions) 
December 31, 2016 Estimated Margin$255
Changes in underlying discount rate assumptions (excl. Tax Reform Legislation)(270)
Changes in underlying discount rate assumptions (Tax Reform Legislation Impact)(1,048)
Changes in underlying morbidity assumptions972
Changes in underlying persistency assumptions(7)
Changes in underlying premium rate action assumptions157
Changes in underlying expense and other assumptions187
December 31, 2017 Estimated Margin$246
(1) Including cost of care inflation assumption.
The decreaseincrease in the margin in 20172021 was primarily driven by the reductionchanges in the Federal corporate income tax rate enacted on December 22, 2017 which reduced the tax equivalent yield on the tax exempt municipal bonds in the investment portfolio supporting the long term care liabilities. A continuation of the low interest rate environment also drove a reduction in the discount rate assumptions. These unfavorable drivers were mostly offset by favorable changes

assumptions due to the underlying morbidity assumptions, both frequency and severity, higher thannear-term expected rate increases on active rate action programsreinvestment rates and favorable changes to the underlying expensemorbidity assumptions. These favorable drivers were partially offset by unfavorable changes to underlying persistency assumptions.
The annual long term care claim experience study resulted in a release of $42 million from claimWe have determined that additional future policy benefit reserves drivenfor profits followed by favorable frequency and severity relative to expectations.losses are not currently required based on the most recent projection.
The table below summarizes the estimated pretax impact on our results of operations from various hypothetical revisions to our active life reserve assumptions. The annual GPV process involves updating all assumptions to themanagement's then current best estimate, and historically all significant assumptions have been revised each year. In the Hypothetical Revisions table below, we have assumed that revisions to such assumptions would occur in each policy type, age and duration within each policy group and would occur absent any changes, mitigating or otherwise, in the other assumptions. Although such hypothetical revisions are not currently required or anticipated, we believe they could occur based on past variances in experience and our expectations of the ranges of future experience that could reasonably occur. Any required increase in the recorded reserves resulting from thea hypothetical revision in the table below would first reduce the margin in our carried reserves before it would affect results offrom operations. Any actual adjustment would be dependent on the specific policies affected and, therefore, may differ from the estimates summarized below. The estimated impacts to results of operations in the table below are after consideration of the existing margin.
2021 GPV
Estimated reduction to pretax income
Hypothetical revisions (In millions)
Morbidity:
2.5% increase in morbidity$300 
5% increase in morbidity600 
Persistency:
5% decrease in active life mortality and lapse$100 
10% decrease in active life mortality and lapse300 
Discount Rates:
25 basis point decline in new money interest rates$100 
50 basis point decline in new money interest rates200 
Premium Rate Actions:
50% decrease in anticipated future premium rate increases— 
28
December 31, 2017 
 Estimated reduction to pretax income
Hypothetical revisions (In millions)
Morbidity: 
5% increase in morbidity$408
10% increase in morbidity1,061
Persistency: 
5% decrease in active life mortality and lapse$
10% decrease in active life mortality and lapse219
Discount Rates:

50 basis point decline in future interest rates$161
100 basis point decline in future interest rates633
Premium Rate Actions: 
50% decrease in anticipated future rate increases premium$

As reflectedCATASTROPHES AND RELATED REINSURANCE
Various events can cause catastrophe losses. These events can be natural or man-made, including hurricanes, windstorms, earthquakes, hail, severe winter weather, fires, floods, riots, strikes, civil unrest, cyber-attacks, pandemics and acts of terrorism that produce unusually large aggregate losses. In most, but not all cases, our catastrophe losses from these events in the Long Term Care Active Life Reserve - Change in estimated reserve margin table onU.S. are defined consistent with the preceding page, the reduction in the Federal corporate income tax rate adversely affected the valuedefinition of the tax benefit receivedProperty Claims Service (PCS). PCS defines a catastrophe as an event that causes damage of $25 million or more in direct insured losses to property and affects a significant number of policyholders and insurers. For events outside of the U.S., we define a catastrophe as an industry recognized event that generates an accumulation of claims amounting to more than $1 million for the International segment.
Catastrophes are an inherent risk of the property and casualty insurance business and have contributed to material period-to-period fluctuations in our results of operations and/or equity. We reported catastrophe losses, net of reinsurance, of $397 million and $550 million for the years ended December 31, 2021 and 2020. Net catastrophe losses for the year ended December 31, 2021 were driven by severe weather related events, primarily Hurricane Ida and Winter Storms Uri and Viola. Net catastrophe losses for the year ended December 31, 2020 included $294 million related primarily to severe weather related events, $195 million related to the COVID-19 pandemic and $61 million related to civil unrest.
We use various analyses and methods, including using one of the industry standard natural catastrophe models to estimate hurricane and earthquake losses at various return periods, to inform underwriting and reinsurance decisions designed to manage our exposure to catastrophic events. We generally seek to manage our exposure through the purchase of catastrophe reinsurance and have catastrophe reinsurance treaties that cover property and workers’ compensation losses. We conduct an ongoing review of our risk and catastrophe reinsurance coverages and from time to time make changes as we deem appropriate.
During the second quarter of 2021, we added a quota share treaty to our property reinsurance program, which covers policies written during the treaty term and in-force as of June 1, 2021. As a result of the coverage of in-force policies, net written premiums were reduced by $122 million during the second quarter for the one-time catch-up under the treaty of unearned premium on tax exempt municipal investments and thuspolicies previously written as of the rateJune 1, 2021 treaty inception. This ceded premium will earn in future quarters consistent with the underlying gross policies.
The following discussion summarizes our most significant catastrophe reinsurance coverage at which we discount our long term care active life reserves. Any future reduction in income tax rates could further adversely affect our GPV discount rates.January 1, 2022.

CATASTROPHE REINSURANCE
Group North American Property Treaty
The Company purchasesWe purchased corporate catastrophe excess-of-loss treaty reinsurance covering itsour U.S. states and territories and Canadian property exposures underwritten in our North American and non-Lloyds European companies. Exposures underwritten through Hardy are excluded and covered under a separate treaty. The treaty has a term of JanuaryJune 1, 20182021 to December 31, 2018. The 2018 treatyJune 1, 2022 and provides coverage for the accumulation of covered losses from catastrophe occurrences above the Company’sour per occurrence retention of $250$190 million up to $900 million for all losses other than earthquakes. Earthquakes are covered up to $1.0 billion, with 10% co-participation on the first $650 million above the retention and 20% co-participation on the top $100 million layer.billion. Losses stemming from terrorism events are covered unless they are due to a nuclear, biological or chemical attack. All layers of the treaty provide for one full reinstatement.
Group WorkersWorkers' Compensation Treaty
The CompanyWe also purchasespurchased corporate WorkersWorkers' Compensation catastrophe excess-of-loss treaty reinsurance for the period January 1, 20182022 to December 31, 2018January 1, 2023 providing $275 million of coverage for the accumulation of covered losses related to natural catastrophes above the Companyour per occurrence retention of $25 million. The treaty also provides $475 million of coverage for the accumulation of covered losses related to terrorism events above the Companyour retention of $25 million. Of this $475 million in Terrorism coverage, $200 million is provided for nuclear, biological chemical and radiation events. One full reinstatement is available for the first $275 million above the retention, regardless of the covered peril. The Company also purchases
Terrorism Risk Insurance Program Reauthorization Act of 2019 (TRIPRA)
Our principal reinsurance protection against large-scale terrorist attacks, including nuclear, biological, chemical or radiological attacks, is the coverage currently provided through TRIPRA which runs through the end of 2027. TRIPRA provides a targeted facultative facility to address exposure accumulationsU.S. government backstop for insurance-related losses resulting from any “act of
29

terrorism,” which is certified by the Secretary of Treasury in specific peak Terrorism zones.


CONSOLIDATED OPERATIONS
What we previously referred to as Net operating income (loss) in our public disclosures, we now refer to as Core income (loss). With this terminology change, we removed Non-Core fromconsultation with the titlesSecretary of our Life & Group and Corporate & Other segments to avoid confusion.
On December 22, 2017, H.R.1, “An Act to ProvideHomeland Security for Reconciliation Pursuant to Titles II and Vlosses that exceed a threshold of the Concurrent Resolution on the Budget for Fiscal Year 2018,” previously known as “The Tax Cuts and Jobs Act” was signed into law (Tax Reform Legislation). The Tax Reform Legislation provides for a permanent reduction in the Federal corporate income tax rate from 35% to 21% effective January 1, 2018, among other provisions. As a result, we recorded a one-time non-cash increase to Income tax expense of $83$200 million industry-wide for the calendar year ended December 31, 2017.
We expect2022. Under the overallcurrent provisions of the Tax Reform Legislationprogram, in 2022, the federal government will havereimburse 80% of our covered losses in excess of our applicable deductible up to a positive impacttotal industry program cap of $100 billion. Our deductible is based on future periods by loweringeligible commercial property and casualty earned premiums for the effective tax rate and increasing after-tax earnings, primarily due topreceding calendar year. Based on 2021 earned premiums, our estimated deductible under the reductionprogram is $915 million for 2022. If an act of terrorism or acts of terrorism result in covered losses exceeding the Federal corporate income tax rate. The reduction$100 billion annual industry aggregate limit, Congress would be responsible for determining how additional losses in income taxesexcess of $100 billion will also enhance cash flow.be paid.
Although the Tax Reform Legislation initially reduced our combined statutory surplus in the period
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CONSOLIDATED OPERATIONS
Results of Operations
The following table includes the consolidated results of our operations including our financial measure, Core income.core income (loss). For more detailed components of our business operations and a discussion of the core income (loss) financial measure, see the segment discussionsSegment Results section within this MD&A. For further discussion of Net investment income and Net realized investment results,gains or losses, see the Investments section of this MD&A.

Years ended December 31     Years ended December 31
(In millions)2017 2016 2015(In millions)20212020
Operating Revenues     Operating Revenues
Net earned premiums$6,988
 $6,924
 $6,921
Net earned premiums$8,175 $7,649 
Net investment income2,034
 1,988
 1,840
Net investment income2,159 1,935 
Non-insurance warranty revenueNon-insurance warranty revenue1,430 1,252 
Other revenues427
 404
 407
Other revenues24 26 
Total operating revenues9,449
 9,316
 9,168
Total operating revenues11,788 10,862 
Claims, Benefits and Expenses     Claims, Benefits and Expenses
Net incurred claims and benefits5,288
 5,270
 5,372
Net incurred claims and benefits6,327 6,149 
Policyholders' dividends22
 13
 12
Policyholders' dividends22 21 
Amortization of deferred acquisition costs1,233
 1,235
 1,540
Amortization of deferred acquisition costs1,443 1,410 
Non-insurance warranty expenseNon-insurance warranty expense1,328 1,159 
Other insurance related expenses1,098
 1,122
 1,093
Other insurance related expenses1,062 1,028 
Other expenses591
 589
 535
Other expenses242 220 
Total claims, benefits and expenses8,232
 8,229
 8,552
Total claims, benefits and expenses10,424 9,987 
Core income before income tax1,217
 1,087
 616
Core income before income tax1,364 875 
Income tax expense on core income(298) (263) (101)Income tax expense on core income(258)(140)
Core income919

824
 515
Core income1,106 735 
Net realized investment gains (losses)93
 50
 (67)
Income tax (expense) benefit on net realized investment gains (losses)(30) (15) 31
Net realized investment gains (losses), after tax63
 35
 (36)
Net deferred tax asset remeasurement(83) 
 
Net investment gains (losses)Net investment gains (losses)120 (54)
Income tax (expense) benefit on net investment gains (losses)Income tax (expense) benefit on net investment gains (losses)(24)
Net investment gains (losses), after taxNet investment gains (losses), after tax96 (45)
Net income$899
 $859
 $479
Net income$1,202 $690 

20172021 Compared with 20162020
Core income increased $95$371 million in 20172021 as compared to 2016.with 2020. Core income for our Property & Casualty Operations declined $23increased $344 million primarily driven by higher net catastrophe losses partially offset bydue to improved non-catastrophe current accident year underwriting results. results and higher net investment income driven by limited partnership and common stock returns. Core income for our Life & Group segment improved $117 million. Core loss for our Corporate & Other segment increased $90 million.
Net catastrophe losses were $259$397 million after tax in 20172021 as compared to $111with $550 million after tax in 2016. Core loss2020. Catastrophe losses for our operations outside of Property & Casualty Operations improved $118 millionthe year ended December 31, 2021 were driven by lower adverse priorsevere weather related events, primarily Hurricane Ida and Winter Storms Uri and Viola. Net catastrophe losses for the year A&EP reserve development.ended December 31, 2020 included $294 million related primarily to severe weather related events, $195 million related to the COVID-19 pandemic and $61 million related to civil unrest.
FavorableUnfavorable net prior year loss reserve development of $312 million and $314$11 million was recorded in 2017 and 20162021 as compared with favorable net prior year loss reserve development of $20 million in 2020 related to our Specialty, Commercial, International and Corporate & Other segments. Further information on net prior year loss reserve development is in Note E to the Consolidated Financial Statements included under Item 8.
2016 Compared with 2015
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Core income increased $309 million in 2016 as compared with 2015. Core results increased $293 million for our operations outside

Favorable net prior year development of $314 million and $218 million was recorded in 2016 and 2015 related to our Specialty, Commercial, International and Corporate & Other segments. Further information on net prior year development is in Note E to the Consolidated Financial Statements included under Item 8.

SEGMENT RESULTS
The following discusses the results of operations for our business segments.
Our property and casualty commercial insurance operations are managed and reported in three business segments: Specialty, Commercial and International, which we refer to collectively as Property & Casualty Operations. Specialty provides a broad array ofmanagement and professional financialliability and specialtyother coverages through property and casualty products and services through a network of independent agents, brokers and managing general underwriters. Commercial includes property and casualty coverages sold to small businesses and middle market entities and organizations primarily through an independent agency distribution system. Commercial also includes commercial insurance and risk management products sold to large corporations primarily through insurance brokers. International provides management and professional liability coverages as well as a broad range of other property and casualty insurance products and services abroad throughusing a network of brokers, independent agencies and managing general underwriters, as well as the Lloyd’s marketplace.
Effective January 1, 2018, management is changing the segment presentationunderwriters. Commercial works with a network of our life sciencesbrokers and independent agents to market a broad range of property and casualty insurance products to all types of insureds targeting small business, and technology and media related errors and omissions (E&O) business within the Specialty and Commercial business segments.  Our life sciences business provides product liabilityconstruction, middle markets and other coverages such ascommercial customers. The International segment underwrites property and workers compensation associated with the life sciences industry. Approximately $100 millioncasualty coverages on a global basis through a branch operation in Canada, a European business consisting of net written premium related to the life sciences business will move from the Specialty business segment to the Commercial business segment.  Our technology and media related E&O business provides network security and privacy, media and E&O coverage primarily for technology risks.  Approximately $70 million of net written premium related to this business will move from the Commercial business segment to the Specialty business segment. We believe the new management responsibility for these businesses better aligns with line of business underwriting expertise and the manner in which the products are sold. The new classifications will be presentedinsurance companies based in the Company’s financial statements beginning with the period ending March 31, 2018,U.K. and prior periods presented will conform to the new presentation.Luxembourg and Hardy, our Lloyd's syndicate.
Our operations outside of Property & Casualty Operations are managed and reported in two segments: Life & Group and Corporate & Other. Life & Group primarily includes the results of our long term care business that is in run-off. Corporate & Other primarily includes certain corporate expenses, including interest on corporate debt, and the results of certain property and casualty businesses in run-off, including CNA Re, A&EP, a legacy portfolio of excess workers' compensation (EWC) policies and A&EP.certain legacy mass tort reserves. Intersegment eliminations are also included in this segment.
Our PropertyEffective January 1, 2021, we changed the segment presentation of a legacy portfolio of excess workers compensation policies and certain legacy mass tort reserves. These businesses were previously reported in the Commercial business segment and are now reported as part of the Corporate & Casualty Operations field structure consists of 49 underwriting locations acrossOther business segment. Prior period information has been conformed to the United States. In addition, there are five centralized processing operations which handle policy processing, billing and collection activities and also act as call centersnew segment presentation. See Note O to optimize service. Our claim presence consists of six primary locations where we handle multiple claim types and key business functions. Additionally, claim maintains regional offices which are aligned with our underwriting field structure. We also have a presence in Canada, Europe and Singapore consisting of 17 branch operations and access to business placed at Lloyd's of London through Hardy Syndicate 382.
What we previously referred to as net operating income (loss) in our public disclosures, we now refer to as core income (loss). The fourth quarter 2017 net deferred tax asset remeasurement was excluded from core income (loss)the Consolidated Financial Statements included under Item 8 for more information on the year ended December 31, 2017. Otherwise, there were no changes to the calculation of this measure. our business segments.
We utilize the core income (loss) financial measure to monitor our operations. Core income (loss) is calculated by excluding from net income (loss) the after-tax effects of i) net realized investment gains or losses ii) income or loss from discontinued operations, iii)and any cumulative effects of changes in accounting guidance and iv) deferred tax asset and liability remeasurement as a result of an enacted U.S. Federal tax rate change.guidance. The calculation of core income (loss) excludes net realized investment gains or losses because net realized investment gains or losses are generally driven by economic factors that are not necessarily consistent with key driversreflective of underwriting performance, and are therefore not considered an indication of trends in insuranceour primary operations. Management monitors core income (loss) for each business segment to assess segment performance. Presentation of consolidated core income (loss) is deemed to be a non-GAAP financial measure. See further discussion regarding how we manage our business and reconciliations of non-GAAP measures to the most comparable GAAP measures and other information in Note O to the Consolidated Financial Statements included under Item 8.
In evaluating the results of our Specialty, Commercial and International segments, we utilize the loss ratio, the loss ratio excluding catastrophes and development, theexpense ratio, the dividend ratio, the combined ratio and the combined ratio.ratio excluding catastrophes and development. These ratios are calculated using GAAP financial results.

The loss ratio is the percentage of net incurred claim and claim adjustment expenses to net earned premiums. The loss ratio excluding catastrophes and development excludes net catastrophes losses and changes in estimates of claim and claim adjustment expense reserves, net of reinsurance, for prior years from the loss ratio. The expense ratio is the percentage of insurance underwriting and acquisition expenses, including the amortization of deferred acquisition costs, to net earned premiums. The dividend ratio is the ratio of policyholders' dividends incurred to net earned premiums. The combined ratio is the sum of the loss, expense and dividend ratios. The combined ratio excluding catastrophes and development is the sum of the loss ratio excluding catastrophes and development, the expense ratio and the dividend ratio. In addition, we also utilize renewal premium change, rate, retention and new business in evaluating operating trends. Renewal premium change represents the estimated change in average premium on policies that renew, including rate and exposure changes. Rate represents the average change in price on policies that renew excluding exposure change. For certain products within Small Business, where quantifiable, rate includes the influence of new business as well. Exposure represents the measure of risk used in the pricing of the insurance product. Retention represents the percentage of premium dollars renewed in comparison to the expiring premium dollars from policies available to renew. Renewal premium change, rate and retention presented for the prior year are updated to reflect subsequent activity on policies written in the period. New business represents premiums from policies written with new customers and additional policies written with existing customers. Gross written premiums, excluding
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third-party captives, excludes business which is ceded to third-party captives, including business related to large warranty programs.
Changes in estimates of claim and claim adjustment expense reserves, and premium accruals, net of reinsurance, for prior years are defined as net prior year loss reserve development within this MD&A. These changes can be favorable or unfavorable. Net prior year loss reserve development does not include the effect of any related acquisition expenses. Further information on our reserves is provided in Note E to the Consolidated Financial Statements included under Item 8.


33

Specialty
Specialty provides management and professional liability and other coverages through property and casualty products and services using a network of brokers, independent agencies and managing general underwriters. Specialty includes the following business groups:
Management & Professional Liability provides management consists of the following coverages and professionalproducts:
Professional liability insurancecoverages and risk management services and other specialized property and casualty coverages. This group provides professional liability coverages to various professional firms, including architects, real estate agents, accounting firms and law firms and other professional firms. Management & Professional Liability also provides
D&O, employment practices, fiduciary and fidelity coverages. Specific areas of focus include small and mid-size firms, public as well as privately held firms and not-for-profit organizations, where tailored products for these client segments are offered. Products within Management & Professional Liability are distributed through brokers, independent agents and managing general underwriters. Management & Professional Liability alsooffers insuranceorganizations.
Insurance products to serve the healthcare industry. Products includeindustry, including professional and general liability as well as associated standard property and casualty coverages, and are distributed on a national basis through brokers, independent agents and managing general underwriters.coverages. Key customer groups include aging services, allied medical facilities, life sciences, dentists, physicians, hospitals, and nurses and other medical practitioners.
Surety offers small, medium and large contract and commercial surety bonds. Surety provides surety and fidelity bonds in all 50 states through a network of independent agencies and brokers.states.
Warranty and Alternative Risks provides extended service contracts and relatedinsurance products that provide protection from the financial burden associated with mechanical breakdown and other related losses, primarily for vehicles, portable electronic communication devices and cell phones.other consumer goods. Service contracts are generally distributed by commission-based independent representatives and sold by auto dealerships and retailers in North America to customers in conjunction with the purchase of a new or used vehicle or new consumer goods. Additionally, our insurance companies may issue contractual liability insurance policies or guaranteed asset protection reimbursement insurance policies to cover the liabilities of these service contracts issued by affiliated entities or third parties.

34

The following table details the results of operations for Specialty.
Years ended December 31
(In millions, except ratios, rate, renewal premium change and retention)20212020
Gross written premiums$7,665 $7,180 
Gross written premiums excluding third-party captives3,672 3,296 
Net written premiums3,225 3,040 
Net earned premiums3,076 2,883 
Net investment income497 449 
Core income704 535 
Other performance metrics:
Loss ratio excluding catastrophes and development59.1 %59.9 %
Effect of catastrophe impacts0.4 4.3 
Effect of development-related items(1.4)(2.1)
Loss ratio58.1 62.1 
Expense ratio30.5 31.3 
Dividend ratio0.1 0.1 
Combined ratio88.7 %93.5 %
Combined ratio excluding catastrophes and development89.7 %91.3 %
Rate11 %12 %
Renewal premium change11 13 
Retention83 86 
New business$551 $389 
Years ended December 31     
(In millions, except ratios, rate, renewal premium change and retention)2017 2016 2015
Net written premiums$2,771
 $2,780
 $2,781
Net earned premiums2,753
 2,779
 2,782
Net investment income538
 516
 474
Core income610
 650
 560
      
Other performance metrics:     
Loss and loss adjustment expense ratio55.8% 52.8% 57.4%
Expense ratio32.0
 32.0
 31.1
Dividend ratio0.2
 0.2
 0.2
Combined ratio88.0% 85.0% 88.7%
      
Rate0% 1% 1%
Renewal premium change2
 2
 3
Retention88
 88
 87
New business$251
 $249
 $279
20172021 Compared with 20162020
Gross written premiums, excluding third-party captives, for Specialty increased $376 million in 2021 as compared with 2020 driven by rate and higher new business. Net written premiums for Specialty increased $185 million in 2017 were consistent2021 as compared with 2016. New business, renewal premium change and retention also remained at consistent levels.2020. The decreaseincrease in net earned premiums was consistent with the trend in net written premiums.
Core income decreased $40increased $169 million in 20172021 as compared with 2016,2020 primarily due to lower favorable net prior year loss reserve development and higher net catastrophe losses, partially offset by improved non-catastrophe current accident year underwriting results and higher net investment income.income driven by limited partnership and common stock returns.
The combined ratio increased 3.0of 88.7% improved 4.8 points in 20172021 as compared with 2016. The2020 due to a 4.0 point improvement in the loss ratio increased 3.0 pointsand a 0.8 point improvement in the expense ratio. The improvement in the loss ratio was primarily due to lower favorable net prior year loss reserve development and higher net catastrophe losses. Net catastrophe losses were $49$12 million, or 1.80.4 points of the loss ratio, for 2017,2021, as compared to $18with $125 million, or 0.64.3 points of the loss ratio, for 2016.2020. The loss ratio excluding catastrophes and development improved 1.3 points. Theimprovement in the expense ratio in 2017 was consistent with the same period in 2016.driven by higher net earned premiums.
Favorable net prior year loss reserve development of $216$45 million and $305$61 million was recorded in 20172021 and 2016.2020. Further information on net prior year loss reserve development is in Note E to the Consolidated Financial Statements included under Item 8.

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The following table summarizes the gross and net carried reserves for Specialty.
December 31
(In millions)20212020
Gross case reserves$1,578 $1,567 
Gross IBNR reserves4,855 4,181 
Total gross carried claim and claim adjustment expense reserves$6,433 $5,748 
Net case reserves$1,338 $1,410 
Net IBNR reserves3,927 3,488 
Total net carried claim and claim adjustment expense reserves$5,265 $4,898 

36
December 31   
(In millions)2017 2016
Gross case reserves$1,805
 $1,871
Gross IBNR reserves4,043
 4,278
Total gross carried claim and claim adjustment expense reserves$5,848
 $6,149
Net case reserves$1,656
 $1,681
Net IBNR reserves3,523
 3,723
Total net carried claim and claim adjustment expense reserves$5,179
 $5,404

2016 Compared with 2015
Net written premiums for Specialty in 2016 were consistent with 2015 as growth in warranty was offset by a decrease in management and professional liability and healthcare due to underwriting actions undertaken in certain business lines. The trend in net earned premiums was consistent with net written premiums.
Core income increased $90 million in 2016 as compared with 2015, primarily due to higher favorable net prior year reserve development and net investment income partially offset by higher underwriting expenses and current accident year net loss and loss adjustment expenses.
The combined ratio decreased 3.7 points in 2016 as compared with 2015. The loss ratio decreased 4.6 points due to higher favorable net prior year reserve development partially offset by a higher current accident year loss ratio. Net catastrophe losses were $18 million, or 0.6 pointsTable of the loss ratio, for 2016 as compared to $13 million, or 0.4 points of the loss ratio, for 2015. The expense ratio increased 0.9 points in 2016 as compared with 2015, due to higher employee costs and higher IT spending primarily related to new underwriting platforms.Contents
Favorable net prior year development of $305 million and $152 million was recorded in 2016 and 2015. Further information on net prior year development is in Note E to the Consolidated Financial Statements included under Item 8.



Commercial
Commercial works with a network of brokers and independent agents to market a broad range of property and casualty insurance products to all types of insureds targeting small business, construction, middle markets and services to small, middle-market and large businesses.other commercial customers. Property products include standard and excess property, marine and boiler and machinery coverages. Casualty products include standard casualty insurance products such as workers' compensation, general and product liability, commercial auto and umbrella coverages. Most insurance programs are provided on a guaranteed cost basis; however, we also offer specialized loss-sensitive insurance programs and total risk management services relating to claim and information services to the large commercial insurance marketplace.
Effective January 1, 2021, we changed the segment presentation of a legacy portfolio of excess workers' compensation policies and certain legacy mass tort reserves. These propertybusinesses were previously reported in the Commercial business segment and casualtyproducts are offered through our Middle Market, Small Business andnow reported as part of the Corporate & Other Commercial insurance groups.business segment. Prior period information has been conformed to the new segment presentation.

The following table details the results of operations for Commercial.
Years ended December 31
(In millions, except ratios, rate, renewal premium change and retention)202120202019
Gross written premiums$4,445 $4,086 $3,693 
Gross written premiums excluding third-party captives4,334 3,993 3,609 
Net written premiums3,595 3,565 3,315 
Net earned premiums3,552 3,323 3,162 
Net investment income624 513 605 
Core income394 267 480 
Other performance metrics:
Loss ratio excluding catastrophes and development61.0 %60.4 %61.5 %
Effect of catastrophe impacts10.0 10.7 4.9 
Effect of development-related items0.5 0.5 (0.4)
Loss ratio71.5 71.6 66.0 
Expense ratio31.1 33.0 32.9 
Dividend ratio0.5 0.5 0.6 
Combined ratio103.1 %105.1 %99.5 %
Combined ratio excluding catastrophes and development92.6 %93.9 %95.0 %
Rate%10 %%
Renewal premium change10 
Retention82 84 86 
New business$843 $761 $682 
Years ended December 31     
(In millions, except ratios, rate, renewal premium change and retention)2017 2016 2015
Net written premiums$2,882
 $2,841
 $2,818
Net earned premiums2,840
 2,804
 2,788
Net investment income642
 638
 593
Core income341
 311
 369
    
  
Other performance metrics:     
Loss and loss adjustment expense ratio67.9% 68.7 % 65.1%
Expense ratio35.2
 36.8
 36.1
Dividend ratio0.6
 0.3
 0.3
Combined ratio103.7% 105.8 % 101.5%
      
Rate0% (2)% 1%
Renewal premium change2
 3
 4
Retention86
 84
 78
New business$559
 $520
 $552
20172021 Compared with 20162020
Gross written premiums for Commercial increased $359 million in 2021 as compared with 2020 driven by rate and higher new business. Net written premiums for Commercial increased $41$30 million in 20172021 as compared with 2016 driven2020. Net written premiums for 2021 were unfavorably impacted by higher new business within Middle Markets, strong retention and positive renewalthe June 1, 2021 written premium change. This was partially offset by an unfavorablecatch-up resulting from the addition of the quota share treaty to our property reinsurance program. Excluding the impact of the June 1, 2021 written premium rate adjustment within Small Business that is more fully discussedcatch-up, net written premiums increased $142 million for 2021 as compared with 2020. Net earned premiums for Commercial increased $229 million in Note F to the Consolidated Financial Statements under Item 8.2021 as compared with 2020. The increase in net earned premiumpremiums was consistent with the trendpartially impacted by a reduction in net written premiums.estimated audit premiums related to COVID-19 in 2020.
37

Core income increased $30$127 million in 20172021 as compared with 2016,2020, primarily due to higher net investment income driven by limited partnership and common stock returns and improved current accident year underwriting results.
The combined ratio of 103.1% improved 2.0 points in 2021 as compared with 2020 primarily due to a 1.9 point improvement in the favorable period over period effectexpense ratio. The improvement in the expense ratio was primarily due to higher net earned premiums and lower acquisition costs. Net catastrophe losses were $358 million, or 10.0 points of the loss ratio, for 2021, as compared with $358 million, or 10.7 points of the loss ratio, for 2020.
Favorable net prior year loss reserve development of $6 million and improved non-catastrophe current accident year underwriting results partially offset by higher net catastrophe losses.

The combined ratio improved 2.1 points in 2017 as compared to 2016. The loss ratio improved 0.8 points primarily due to the favorable period over period effect of net prior year loss reserve development partially offset by higher net catastrophe losses. Net catastrophe losses were $267 million, or 9.4 points of the loss ratio, for 2017, as compared to $116 million, or 4.1 points of the loss ratio, for 2016. The loss ratio excluding catastrophes and development improved 1.9 points. The expense ratio improved 1.6 points in 2017 as compared with 2016, reflecting both our ongoing efforts to improve productivity and the actions undertaken in last year's third and fourth quarters to reduce expenses.
Favorable net prior year development of $59$7 million was recorded in 2017 as compared with unfavorable net prior year development of $53 million in 2016.2021 and 2020. Further information on net prior year loss reserve development is in Note E to the Consolidated Financial Statements included under Item 8.
The following table summarizes the gross and net carried reserves for Commercial.
December 31
(In millions)20212020
Gross case reserves$3,184 $3,215 
Gross IBNR reserves5,706 5,035 
Total gross carried claim and claim adjustment expense reserves$8,890 $8,250 
Net case reserves$2,850 $2,885 
Net IBNR reserves5,215 4,590 
Total net carried claim and claim adjustment expense reserves$8,065 $7,475 
December 31   
(In millions)2017 2016
Gross case reserves$4,364
 $4,661
Gross IBNR reserves4,221
 4,233
Total gross carried claim and claim adjustment expense reserves$8,585
 $8,894
Net case reserves$4,047
 $4,353
Net IBNR reserves3,917
 3,952
Total net carried claim and claim adjustment expense reserves$7,964
 $8,305
20162020 Compared with 20152019
Gross written premiums for Commercial increased $393 million in 2020 as compared with 2019 driven by strong rate and higher new business. Net written premiums for Commercial increased $23$250 million in 20162020 as compared with 2015 driven by strong retention in Middle Markets partially offset by a decrease in small business, which included a premium rate adjustment more fully discussed in Note F to the Consolidated Financial Statements under Item 8.2019. The increase in net earned premiumpremiums was consistent with the trend in net written premiums.premiums partially offset by a reduction in estimated audit premiums as a result of the economic slowdown arising from COVID-19 and premium rate adjustments impacting certain general liability policies.
Core income decreased $58$213 million in 20162020 as compared with 2015,2019, primarily due to a higher underwriting lossnet catastrophe losses and lower net investment income partially offset by an increase in net investment income.improved non-catastrophe current accident year underwriting results.
The combined ratio of 105.1% increased 4.35.6 points in 20162020 as compared with 2019 due to 2015. Thean increase in the loss ratio increased 3.6 points due to the unfavorable period over period effect ofprimarily driven by higher net prior year reserve development and a higher current accident year loss ratio due to higher largecatastrophe losses. Net catastrophe losses were $116$358 million, or 4.110.7 points of the loss ratio, for 2016 primarily driven by U.S. weather-related events,2020, as compared to $101with $154 million, or 3.64.9 points of the loss ratio, for 2015.2019. Net catastrophe losses in 2020 included $252 million related primarily to severe weather related events, $58 million related to civil unrest and $48 million related to the COVID-19 pandemic. The expense ratio increased 0.7 points in 20162020 was consistent with 2019 as compared with 2015, due to higher employee costsacquisition expenses were offset by higher net earned premiums and higher IT spending primarily related to a newlower underwriting platform.expenses.
UnfavorableFavorable net prior year loss reserve development of $53$7 million and $40 million was recorded in 2016 as compared with favorable net prior year development of $30 million in 2015.2020 and 2019. Further information on net prior year loss reserve development is in Note E to the Consolidated Financial Statements included under Item 8.

38


International
The International providessegment underwrites property and casualty and specialty coverages on a global basis through its operationsa branch operation in Canada, a European business consisting of insurance companies based in the United Kingdom, Continental EuropeU.K. and Singapore, as well as through its presence at Lloyd’s of London.Luxembourg and Hardy, our Lloyd's syndicate.
The International business is grouped into broad business units which include Energy & Marine, Property, Casualty, Specialty, and Healthcare & Technology. International is managed across three underwriting platforms from Head Offices in London and Toronto.
Canada provides standard commercial and specialty insurance products, primarily in the marine, oil & gas, construction, manufacturing and life science industries.
CNA Europeprovides a diverse range of specialty products as well as commercial insurance products primarily in the marine, property, financial services and healthcare & technology industries throughoutin the U.K. and Continental Europe on both a domestic and cross bordercross-border basis.
Hardy operates through Lloyd’s Syndicate 382 underwriting primarily short-tail exposures in energy, marine, property, casualty and specialty lines with risks located in many countries around the world. The capacity of, and results from the syndicate, are 100% attributable to CNA.




The following table details the results of operations for International.
Years ended December 31
(In millions, except ratios, rate, renewal premium change and retention)20212020
Gross written premiums$1,297 $1,133 
Net written premiums1,101 961 
Net earned premiums1,057 940 
Net investment income57 58 
Core income86 38 
Other performance metrics:
Loss ratio excluding catastrophes and development59.0 %60.1 %
Effect of catastrophe impacts2.6 7.1 
Effect of development-related items0.1 (0.3)
Loss ratio61.7 66.9 
Expense ratio33.1 35.5 
Combined ratio94.8 %102.4 %
Combined ratio excluding catastrophes and development92.1 %95.6 %
Rate13 %14 %
Renewal premium change13 12 
Retention78 73 
New business$274 $245 
Years ended December 31     
(In millions, except ratios, rate, renewal premium change and retention)2017 2016 2015
Net written premiums$881
 $821
 $822
Net earned premiums857
 806
 804
Net investment income52
 51
 52
Core income8
 21
 37
      
Other performance metrics:     
Loss and loss adjustment expense ratio67.0% 61.0 % 59.5 %
Expense ratio37.8
 38.1
 38.1
Combined ratio104.8% 99.1 % 97.6 %
      
Rate0% (1)% (1)%
Renewal premium change2
 (1) 0
Retention80
 76
 76
New business(1)
$275
 $240
 $111
(1) Beginning in 2016, new business includes Hardy. New business for Hardy was $151 million and $133 million for the years ended December 31, 2017 and 2016.
20172021 Compared with 20162020
NetGross written premiums for International increased $60$164 million in 20172021 as compared with 2016 due to higher new business, positive renewal premium change and higher retention.2020. Excluding the effect of foreign currency exchange rates, gross written premiums increased $104 million driven by rate and premium development,higher new business. Net written premiums for International increased $140 million in 2021 as compared with 2020. Excluding the effect of foreign currency exchange rates, net written premiums increased 6.7% in 2017.$85 million. The increase in net earned premiums was consistent with the trend in net written premiums.
Core income decreased $13increased $48 million in 20172021 as compared with 20162020 primarily due to improved current accident year underwriting results.
The combined ratio of 94.8% improved 7.6 points in 2021 as compared with 2020 due to a 5.2 point improvement in the loss ratio and a 2.4 point improvement in the expense ratio. The improvement in the loss ratio was driven by lower net catastrophe losses and improved non-catastrophe current accident year underwriting results. Net catastrophe losses were $27 million, or 2.6 points of the loss ratio, for 2021, as
39

compared with $67 million, or 7.1 points of the loss ratio, for 2020. The improvement in the expense ratio was driven by lower acquisition costs.
Unfavorable net prior year loss reserve development of $2 million was recorded in 2021 as compared with favorable net prior year loss reserve development and higher net catastrophe losses partially offset by favorable period over period foreign currency exchange results.
The combined ratio increased 5.7 pointsof $2 million in 2017 as compared with 2016. The loss ratio increased 6.0 points, primarily due to lower favorable net prior year loss reserve development and higher net catastrophe losses partially offset by lower current accident year large losses. Net catastrophe losses were $64 million, or 7.9 points of the loss ratio, for 2017, as compared to $31 million, or 3.9 points of the loss ratio, for 2016. The loss ratio excluding catastrophes and development improved 3.0 points. The expense ratio improved 0.3 points in 2017 as compared with 2016 primarily due to the higher net earned premiums.
Favorable net prior year development of $27 million and $64 million was recorded in 2017 and 2016.2020. Further information on net prior year loss reserve development is in Note E to the Consolidated Financial Statements included under Item 8.








The following table summarizes the gross and net carried reserves for International.
December 31
(In millions)20212020
Gross case reserves$859 $892 
Gross IBNR reserves1,421 1,199 
Total gross carried claim and claim adjustment expense reserves$2,280 $2,091 
Net case reserves$744 $777 
Net IBNR reserves1,196 1,045 
Total net carried claim and claim adjustment expense reserves$1,940 $1,822 
40
December 31   
(In millions)2017 2016
Gross case reserves$744
 $632
Gross IBNR reserves892
 696
Total gross carried claim and claim adjustment expense reserves$1,636
 $1,328
Net case reserves$640
 $548
Net IBNR reserves792
 653
Total net carried claim and claim adjustment expense reserves$1,432
 $1,201


2016 Compared with 2015

Core income decreased $16 million in 2016 as compared with 2015, primarily due to a lower underwriting profit and foreign currency exchange losses.
The combined ratio increased 1.5 points in 2016 as compared with 2015. The loss ratio increased 1.5 points, primarily due to an increase in the current accident year loss ratio driven by a higher level of large losses related to political risk, property and financial institutions, partially offset by higher favorable net prior year development. Net catastrophe losses were $31 million, or 3.9 points of the loss ratio, for 2016 primarily driven by the Fort McMurray wildfires, as compared to $27 million, or 3.3 points of the loss ratio, for 2015. The expense ratio was consistent with 2015.
Favorable net prior year development of $64 million and $36 million was recorded in 2016 and 2015. Further information on net prior year development is in Note E to the Consolidated Financial Statements included under Item 8.



Life & Group
The Life & Group segment primarily includes the results of our run-off long term care business that is in run-off.as well as structured settlement obligations not funded by annuities related to certain property and casualty claimants. Long term care policies were sold on both an individual and group basis. New enrollees in existing groups were accepted through February 1, 2016.
The following table summarizes the results of operations for Life & Group.
Years ended December 31
(In millions)20212020
Net earned premiums$491 $504 
Net investment income966 851 
Core income (loss) before income tax105 (47)
Income tax benefit on core income21 56 
Core income126 
Years ended December 31     
(In millions)2017 2016 2015
Net earned premiums$539
 $536
 $548
Net investment income782
 767
 704
Core loss before income tax(82) (125) (629)
Income tax benefit on core loss132
 145
 315
Core income (loss)50
 20
 (314)

20172021 Compared with 20162020
Core income increased $30$117 million in 20172021 as compared with 2016. This increase was2020 primarily due to higher net investment income driven by limited partnership returns.
Core income for 2021 included a $31 million favorable morbidity partially offset by unfavorable persistencyimpact from the reduction in the long term care business. Additionally, the release of long term care claim reserves resulting from the annual claims experience study was higherclaim reserve reviews in 2017 as compared with 2016.
The effective tax ratethe third quarter of 2021. Core income for the Life & Group segment is generally2020 included a function of the Federal corporate income tax rate and the relative proportion of tax exempt investment income on municipal bonds supporting liabilities$59 million charge related to the overall pretaxrecognition of an active life reserve premium deficiency for long term care policies.Core income offor 2020 also included a $36 million charge related to an increase in the segment. Thestructured settlement claim reserves partially offset by a $30 million impact from the reduction in long term care claim reserves, both resulting from the Federal corporate income tax rate effective January 1, 2018 will reduceannual claim reserve reviews in the tax benefit on the segment’s pretax losses.third quarter of 2020.



41

The following table summarizestables summarize policyholder reserves for Life & Group.
December 31, 2021
(In millions)Claim and claim adjustment expensesFuture policy benefitsTotal
Long term care$2,905 $10,012 $12,917 
Structured settlement obligations526— 526 
Other10— 10 
Total3,441 10,012 13,453 
Shadow adjustments (1)
2002,9363,136 
Ceded reserves (2)
113 288 401 
Total gross reserves$3,754 $13,236 $16,990 
December 31, 2017     
(In millions)Claim and claim adjustment expenses Future policy benefits Total
Long term care$2,568
 $8,959
 $11,527
Structured settlement annuities547
 
 547
Other16
 
 16
Total3,131
 8,959
 12,090
Shadow adjustments (1)
159
 1,990
 2,149
Ceded reserves (2)
209
 230
 439
Total gross reserves$3,499
 $11,179
 $14,678
December 31, 2016     
December 31, 2020December 31, 2020
(In millions)Claim and claim adjustment expenses Future policy benefits Total(In millions)Claim and claim adjustment expensesFuture policy benefitsTotal
Long term care$2,426
 $8,654
 $11,080
Long term care$2,844 $9,762 $12,606 
Structured settlement annuities565
 
 565
Structured settlement obligationsStructured settlement obligations543— 543 
Other17
 
 17
Other10— 10 
Total3,008
 8,654
 11,662
Total3,397 9,762 13,159 
Shadow adjustments (1)
101
 1,459
 1,560
Shadow adjustments (1)
2183,2933,511 
Ceded reserves (2)
249
 213
 462
Ceded reserves (2)
128 263 391 
Total gross reserves$3,358
 $10,326
 $13,684
Total gross reserves$3,743 $13,318 $17,061 
(1)    To the extent that unrealized gains on fixed incomematurity securities supporting structured settlements not funded by annuities were realized, or that unrealized gains on fixed maturity securities supporting long term care products and annuity contracts would result in a premium deficiency if those gains were realized, ana related increase in Insurance reserves is recorded, net of tax, as a reduction of net unrealized gains through Other comprehensive income (loss) (Shadow Adjustments).
(2)     Ceded reserves relate to claim or policy reserves fully reinsured in connection with a sale or exit from the underlying business.
2016
Due to the recognition
42

Core income was $20 million for the year ended December 31, 2016 driven by a favorable release of claim reserves resulting from the annual claims experience study and higher net investment income due to an increase in the invested asset base. The long term care results were generally in line with expectations, as the impact of favorable morbidity was partially offset by unfavorable persistency.
2015
In 2015, we recognized a $198 million after-tax charge relating to a premium deficiency and claim reserve strengthening. The December 31, 2015 GPV indicated a premium deficiency of $296 million. The indicated premium deficiency necessitated a charge to income that was affected by the write off of the entire long term care deferred acquisition cost of $289 million and an increase to active life reserves of $7 million. In 2015, results of our long term care business reflected variances between actual experience and actuarial assumptions that were locked-in at policy issuance.

Corporate & Other
Corporate & Other primarily includes certain corporate expenses, including interest on corporate debt and the results of certain property and casualty business in run-off, including CNA Re, A&EP, a legacy portfolio of EWC policies and A&EP.certain legacy mass tort reserves.
The following table summarizes the results of operations for the Corporate & Other segment, including intersegment eliminations.
Years ended December 31
(In millions)202120202019
Net investment income$15 $64 $74 
Interest expense112 122 131 
Core loss(204)(114)(93)
Years ended December 31     
(In millions)2017 2016 2015
Net investment income$20
 $16
 $17
Interest expense152
 155
 154
Core loss(90) (178) (137)
20172021 Compared with 20162020
Core loss improved $88increased $90 million in 2017for 2021 as compared with 2016,2020 driven by lower adversenet investment income, unfavorability related to the A&EP Loss Portfolio Transfer (LPT), expenses related to the March 2021 cybersecurity attack, the recognition of a $12 million after-tax loss resulting from the legacy EWC LPT and higher unfavorable net prior year loss reserve development recordedon legacy mass tort exposures.
The application of retroactive reinsurance accounting to additional cessions to the A&EP LPT in 2017 forboth periods resulted in after-tax charges of $25 million and $5 million in 2021 and 2020, respectively, which have no economic impact. The A&EP under the Loss Portfolio Transfer. This isLPT, EWC LPT and net prior year loss reserve development are further discussed in Note E to the Condensed Consolidated Financial Statements included under Item 8.
The following table summarizes the gross and net carried reserves for Corporate & Other.
December 31
(In millions)20212020
Gross case reserves$1,551 $1,614 
Gross IBNR reserves1,266 1,260 
Total gross carried claim and claim adjustment expense reserves$2,817 $2,874 
Net case reserves$146 $560 
Net IBNR reserves148 331 
Total net carried claim and claim adjustment expense reserves$294 $891 
December 31   
(In millions)2017 2016
Gross case reserves$1,371
 $1,524
Gross IBNR reserves1,065
 1,090
Total gross carried claim and claim adjustment expense reserves$2,436
 $2,614
Net case reserves$94
 $94
Net IBNR reserves111
 136
Total net carried claim and claim adjustment expense reserves$205
 $230
20162020 Compared with 20152019
Core loss increased $41$21 million in 20162020 as compared with 2015. Results2019 primarily driven by higher unfavorable net prior year loss reserve development on legacy mass tort exposures and lower net investment income partially offset by a decrease in both periods were negatively affected by after-tax chargesinterest expense on corporate debt and favorability related to the A&EP LPT.
The application of retroactive reinsurance accounting to adverseadditional cessions to the A&EP LPT in both periods resulted in after-tax charges of $5 million and $14 million in 2020 and 2019, respectively, which have no economic impact. The net prior year loss reserve development ceded under the 2010and A&EP Loss Portfolio Transfer. The Loss Portfolio Transfer drove $18 million of the year over year change. This isLPT are further discussed in Note E to the Consolidated Financial Statements included under Item 8.

43


INVESTMENTS
Net Investment Income
The significant components of Net investment income are presented in the following table. Fixed income securities, as presented, include both fixed maturity securities and equity securities, which substantially consist ofnon-redeemable preferred stock.
Years ended December 31     Years ended December 31
(In millions)2017 2016 2015(In millions)20212020
Fixed income securities:Fixed income securities:
Taxable fixed income securities$1,397
 $1,424
 $1,387
Taxable fixed income securities$1,439 $1,451 
Tax-exempt fixed income securities427
 405
 376
Tax-exempt fixed income securities311 319 
Total fixed income securities1,824
 1,829
 1,763
Total fixed income securities1,750 1,770 
Limited partnership investments207
 155
 92
Limited partnership and common stock investmentsLimited partnership and common stock investments402 144 
Other, net of investment expense3
 4
 (15)Other, net of investment expense21 
Pretax net investment income$2,034
 $1,988
 $1,840
Fixed income securities, after tax$1,324
 $1,322
 $1,277
Net investment income, after tax1,462
 1,427
 1,329
Net investment incomeNet investment income$2,159 $1,935 
     
Effective income yield for the fixed income securities portfolio, pretax4.7% 4.8% 4.7%
Effective income yield for the fixed income securities portfolio, after tax3.4% 3.5% 3.4%
Effective income yield for the fixed income securities portfolioEffective income yield for the fixed income securities portfolio4.3 %4.5 %
Limited partnership and common stock returnLimited partnership and common stock return22.3 %8.3 %
Net investment income after tax, increased $35$224 million in 20172021 as compared with 2016. The increase was2020 driven by higher limited partnership investments, which returned 9.1%and common stock returns partially offset by lower yields in 2017 as compared with 6.3% in the prior year.
Net investment income, after tax, increased $98 million in 2016 as compared with 2015. The increase was driven by limited partnership investments, which returned 6.3% in 2016 as compared with 3.0% in the prior year. Income fromour fixed income securities, after tax, increased $45 million primarily due to an increase in the invested asset base and a charge in 2015 related to a change in estimate effected by a change in accounting principle. See further discussion of the accounting change in Note A to the Consolidated Financial Statements included under Item 8.portfolio.


Net Realized Investment Gains (Losses)
The components of Net realized investment resultsgains (losses) are presented in the following table.
Years ended December 31     
(In millions)2017 2016 2015
Fixed maturity securities:     
Corporate and other bonds$111
 $31
 $(55)
States, municipalities and political subdivisions14
 29
 (22)
Asset-backed(6) (2) 10
U.S. Treasury and obligations of government-sponsored enterprises3
 5
 
Foreign government
 3
 1
Total fixed maturity securities122
 66
 (66)
Equity securities
 (5) (23)
Derivatives(4) (2) 10
Short term investments and other(25) (9) 12
Net realized investment gains (losses)93
 50
 (67)
Income tax (expense) benefit on net realized investment gains (losses)(30) (15) 31
Net realized investment gains (losses), after tax$63
 $35
 $(36)
Years ended December 31
(In millions)20212020
Fixed maturity securities:
Corporate and other bonds$134 $(71)
States, municipalities and political subdivisions— 40 
Asset-backed(38)31 
Total fixed maturity securities96 — 
Non-redeemable preferred stock(3)
Short term and other10 (30)
Mortgage loans10 (21)
Net investment gains (losses)120 (54)
Income tax (expense) benefit on net investment gains (losses)(24)
Net investment gains (losses), after tax$96 $(45)
Net realized investment gains after tax, improved $28(losses) increased $174 million for 20172021 as compared with 2016,2020 driven by lower other-than-temporary impairment (OTTI) losses recognized in earnings. Additionally, Short term investments and other for the current period2020 included a $20 million loss of $27 million after tax related toon the redemption of our $350$400 million senior notes due November 2019. Net realized investment results, after tax, improved $71 million for 2016 as compared with 2015, driven by lower OTTI losses recognized in earnings and higher net realized investment gains on sales of securities.August 2021.
Further information on our realizedinvestment gains and losses including our OTTI losses and derivative gains (losses), as well as our impairment decision process, is set forth in Notes A and B to the Consolidated Financial Statements included under Item 8.

44

Portfolio Quality
The following table presents the estimated fair value and net unrealized gains (losses) of our fixed maturity securities by rating distribution.
December 312017 2016December 3120212020

(In millions)
Estimated Fair Value Net Unrealized Gains (Losses) Estimated Fair Value Net Unrealized Gains (Losses)
(In millions)
Estimated Fair ValueNet Unrealized Gains (Losses)Estimated Fair ValueNet Unrealized Gains (Losses)
U.S. Government, Government agencies and Government-sponsored enterprises$4,514
 $21
 $4,212
 $32
U.S. Government, Government agencies and Government-sponsored enterprises$2,600 $42 $3,672 $117 
AAA1,954
 152
 1,881
 110
AAA3,784 360 3,627 454 
AA8,982
 914
 8,911
 750
AA7,665 823 7,159 1,012 
A9,643
 952
 9,866
 832
A9,511 1,087 9,543 1,390 
BBB13,554
 1,093
 12,802
 664
BBB18,458 2,043 18,007 2,596 
Non-investment grade2,840
 140
 3,233
 156
Non-investment grade2,362 91 2,623 149 
Total$41,487
 $3,272
 $40,905
 $2,544
Total$44,380 $4,446 $44,631 $5,718 
As of December 31, 20172021 and 2016, only 2%2020, 1% of our fixed maturity portfolio was rated internally. AAA rated securities included $1.7 billion and $1.8 billion of pre-refunded municipal bonds as of December 31, 2021 and 2020.
The following table presents available-for-sale fixed maturity securities in a gross unrealized loss position by ratings distribution.
December 31, 2017December 31, 2021
(In millions)Estimated Fair Value Gross Unrealized Losses(In millions)Estimated Fair ValueGross Unrealized Losses
U.S. Government, Government agencies and Government-sponsored enterprises$2,050
 $33
U.S. Government, Government agencies and Government-sponsored enterprises$898 $
AAA177
 6
AAA368 
AA363
 5
AA875 17 
A629
 11
A1,516 23 
BBB1,226
 22
BBB1,812 42 
Non-investment grade530
 10
Non-investment grade596 16 
Total$4,975
 $87
Total$6,065 $112 
The following table presents the maturity profile for these available-for-sale fixed maturity securities. Securities not due to mature on a single date are allocated based on weighted average life.
December 31, 2021
(In millions)Estimated Fair ValueGross Unrealized Losses
Due in one year or less$144 $
Due after one year through five years1,191 22 
Due after five years through ten years2,803 44 
Due after ten years1,927 42 
Total$6,065 $112 
45
 December 31, 2017
(In millions)Estimated Fair Value Gross Unrealized Losses
Due in one year or less$85
 $2
Due after one year through five years1,079
 19
Due after five years through ten years3,363
 57
Due after ten years448
 9
Total$4,975
 $87


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Duration
A primary objective in the management of the investment portfolio is to optimize return relative to the corresponding liabilities and respective liquidity needs. Our views on the current interest rate environment, tax regulations, asset class valuations, specific security issuer and broader industry segment conditions andas well as domestic and global economic conditions, are some of the factors that enter into an investment decision. We also continually monitor exposure to issuers of securities held and broader industry sector exposures and may from time to time adjust such exposures based on our views of a specific issuer or industry sector.
A further consideration in the management of the investment portfolio is the characteristics of the corresponding liabilities and the ability to align the duration of the portfolio to those liabilities and to meet future liquidity needs, minimize interest rate risk and maintain a level of income sufficient to support the underlying insurance liabilities. For portfolios where future liability cash flows are determinable and typically long term in nature, we segregate investments for asset/liability management purposes. The segregated investments support the long term care and structured settlement liabilities in the Life & Group segment.
The effective durations of fixed maturityincome securities non-redeemable preferred stock and short term investments are presented in the following table. Amounts presented are net of payable and receivable amounts for securities purchased and sold, but not yet settled.
December 312017 2016
(In millions)Estimated Fair Value 
Effective
Duration
(In years)
 Estimated Fair Value 
Effective
Duration
(In years)
Investments supporting Life & Group$16,797
 8.4
 $15,724
 8.7
Other investments26,817
 4.4
 26,669
 4.6
Total$43,614
 5.9
 $42,393
 6.1
The duration of the total portfolio is aligned with the cash flow characteristics of the underlying liabilities.
December 3120212020
(In millions)Estimated Fair ValueEffective
Duration
(In years)
Estimated Fair ValueEffective
Duration
(In years)
Investments supporting Life & Group$18,458 9.2 $18,518 9.2 
Other investments28,915 4.9 28,839 4.5 
Total$47,373 6.6 $47,357 6.3 
The investment portfolio is periodically analyzed for changes in duration and related price risk. Certain securities have duration characteristics that are variable based on market interest rates, credit spreads and other factors that may drive variability in the amount and timing of cash flows. Additionally, we periodically review the sensitivity of the portfolio to the level of foreign exchange rates and other factors that contribute to market price changes. A summary of these risks and specific analysis on changes is included in the Quantitative and Qualitative Disclosures About Market Risk included under Item 7A.
Short Term Investments
The carrying value of the components of the Short term investments are presented in the following table.
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December 31   
(In millions)2017 2016
Short term investments:   
Commercial paper$905
 $733
U.S. Treasury securities355
 433
Money market funds44
 44
Other132
 197
Total short term investments$1,436
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LIQUIDITY AND CAPITAL RESOURCES
Cash Flows
Our primary operating cash flow sources are premiums and investment income from our insurance subsidiaries.income. Our primary operating cash flow uses are payments for claims, policy benefits and operating expenses, including interest expense on corporate debt. Additionally, cash may be paid or received for income taxes.
For 2017,2021, net cash provided by operating activities was $1,254$1,997 million as compared with $1,416 million and $1,387$1,775 million for 2016 and 2015, respectively. In 2017,2020. The increase in cash provided by operating activities reflected higherwas driven by an increase in net premiums collected and lower net claim payments, andwhich were impacted by a lower level of distributions on limited partnershipsslowdown in court dockets. These items were partially offset by lower IT spend and an increasethe payment of the EWC LPT premium. The EWC LPT is further discussed in premiums collected. Operating cash flows in 2016 reflected lower income taxes paid and increased receipts relatingNote E to returns on limited partnerships offset by higher net claim and expense payments. Operating cash flows in 2015 reflected lower premiums collected and decreased receipts relating to returns on limited partnerships offset by lower net claim payments.the Consolidated Financial Statements included under Part II, Item 8.
Cash flows from investing activities include the purchase and disposition of available-for-sale financial instruments, excluding those held as trading, and may include the purchase and sale of businesses, land, buildings, equipment and other assets not generally held for resale.
Net cash used by investing activities was $424$1,228 million for 2017,2021, as compared with $846 million and $372$705 million for 2016 and 2015. The2020. Net cash flow fromused or provided by investing activities is affectedprimarily driven by variouscash available from operations and by other factors, such as the anticipated payment of claims, financing activity, asset/liability management and individual security buy and sell decisions made in the normal course of portfolio management. In the first quarter of 2016, we sold the principal executive offices of CNAF for $107 million.activities.
Cash flows from financing activities may include proceeds from the issuance of debt and equity securities, and outflows for stockholder dividends, or repayment of debt and outlays to reacquire equity securities.purchases of treasury stock.
Net cash used by financing activities was $755 million, $673$648 million and $807$902 million for 2017, 20162021 and 2015. 2020. Financing activities for the periods presented include:
In 2021, we paid dividends of $621 million and repurchased 377,615 shares of our common stock at an aggregate cost of $18 million.
In 2020, we paid dividends of $950 million and repurchased 435,376 shares of our common stock at an aggregate cost of $18 million.
In the third quarter of 2017,2020, we issued $500 million of 3.45%2.05% senior notes due August 15, 20272030 and redeemed the $350 million outstanding aggregate principal balances of our 7.35% senior notes due November 15, 2019. In the first quarter of 2016, we issued $500 million of 4.50% senior notes due March 1, 2026 and redeemed the $350$400 million outstanding aggregate principal balance of our 6.50%5.75% senior notes due August 15, 2016.2021.
Liquidity
We believe that our present cash flows from operating, investing and financing activities are sufficient to fund our current and expected working capital and debt obligation needs and we do not expect this to change in the near term. There are currently no amounts outstanding under our $250 million senior unsecured revolving credit facility and no borrowings outstanding through our membership in the Federal Home Loan Bank of Chicago (FHLBC).
CCC paid dividends of $955 million, $765$880 million and $900$975 million to CNAF during 2017, 20162021 and 2015.2020.
We have an effective automatic shelf registration statement on file with the Securities and Exchange Commission under which we may publicly issue debt, equity or hybrid securities from time to time.

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Common Stock Dividends
DividendsCash dividends of $3.10$2.27 per share on our common stock, including a special cash dividend of $2.00$0.75 per share, were declared and paid in 2017.2021. On February 9, 2018,4, 2022, our Board of Directors declared a quarterly cash dividend of $0.30$0.40 per share and a special cash dividend of $2.00 per share, payable March 14, 201810, 2022 to stockholders of record on February 26, 2018.22, 2022. The declaration and payment of future dividends to holders of our common stock will be at the discretion of our Board of Directors and will depend on many factors, including our earnings, financial condition, business needs and regulatory constraints.
Our ability to pay dividends and other credit obligations is significantly dependent on receipt of dividends from our subsidiaries. The payment of dividends to us by our insurance subsidiaries without prior approval of the insurance department of each subsidiary's domiciliary jurisdiction is limited by formula. Dividends in excess of these amounts are subject to prior approval by the respective state insurance departments.
Further information on our dividends from subsidiaries is provided in Note M to the Consolidated Financial Statements included under Item 8.
Commitments, Contingencies and Guarantees
We have various commitments, contingencies and guarantees which arose in the ordinary course of business. The impact of these commitments, contingencies and guarantees should be considered when evaluating our liquidity and capital resources.
A summary of our commitments is presented in the following table.
December 31, 2021
(In millions)TotalLess than 1 year1-3 years3-5 yearsMore than 5 years
Debt (1)
$3,300 $109 $977 $620 $1,594 
Lease obligations (2)
297 42 67 47 141 
Claim and claim adjustment expense reserves (3)
24,955 6,015 6,719 3,401 8,820 
Future policy benefit reserves (4)
25,581 (301)158 909 24,815 
Total (5)
$54,133 $5,865 $7,921 $4,977 $35,370 
December 31, 2017         
(In millions)Total Less than 1 year 1-3 years 3-5 years More than 5 years
Debt (a)$3,638
 $284
 $756
 $575
 $2,023
Lease obligations417
 40
 72
 73
 232
Claim and claim adjustment expense reserves (b)23,478
 5,246
 6,431
 3,347
 8,454
Future policy benefit reserves (c)28,160
 (439) (258) 413
 28,444
Total (d), (e)
$55,693
 $5,131
 $7,001
 $4,408
 $39,153
(1)    Includes estimated future interest payments.
(a)Includes estimated future interest payments.
(b)Claim and claim adjustment expense reserves are not discounted and represent our estimate of the amount and timing of the ultimate settlement and administration of gross claims based on our assessment of facts and circumstances known as of December 31, 2017. See the Reserves - Estimates and Uncertainties section of this MD&A for further information.
(c)Future policy benefit reserves are not discounted and represent our estimate of the ultimate amount and timing of the settlement of benefits based on our assessment of facts and circumstances known as of December 31, 2017. See the Reserves - Estimates and Uncertainties section of this MD&A for further information.
(d)Does not include expected estimated contribution of $20 million to our pension and postretirement plans in 2018.
(e)(2)    The lease obligations reflected above are not discounted.
(3)    The Claim and claim adjustment expense reserves reflected above are not discounted and represent our estimate of the amount and timing of the ultimate settlement and administration of gross claims based on our assessment of facts and circumstances known as of December 31, 2021. See the Reserves - Estimates and Uncertainties section of this MD&A for further information.
(4)    The Future policy benefit reserves reflected above are not discounted and represent our estimate of the ultimate amount and timing of the settlement of benefits net of expected premiums, and are based on our assessment of facts and circumstances known as of December 31, 2021. See the Reserves - Estimates and Uncertainties section of this MD&A for further information.
(5)    Does not include investment commitments of $595approximately $1,230 million related to future capital calls from various third-party limited partnerships, privately placed debt securitiessigned and accepted mortgage loans.loan applications, and obligations related to private placement securities.
Further information on our commitments, contingencies and guarantees is provided in Notes A, B, E, F, H and IL to the Consolidated Financial Statements included under Item 8.

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Ratings
Ratings are an important factor in establishing the competitive position of insurance companies. Our insurance company subsidiaries are rated by major rating agencies and these ratings reflect the rating agency's opinion of the insurance company's financial strength, operating performance, strategic position and ability to meet ourits obligations to policyholders. Agency ratings are not a recommendation to buy, sell or hold any security and may be revised or withdrawn at any time by the issuing organization. Each agency's rating should be evaluated independently of any other agency's rating. One or more of these agencies could take action in the future to change the ratings of our insurance subsidiaries.
The table below reflects the various group ratingsInsurer Financial Strength Ratings of CNA's insurance company subsidiaries issued by A.M. Best, Moody's, S&P and S&P.Fitch. The table also includes the ratings for CNAFCNAF's senior debt.
December 31, 20172021InsuranceInsurer Financial Strength RatingsCorporateSenior Debt Ratings
A.M. BestCCC GroupAWestern Surety GroupCNAF - Senior Debtbbb+
A.M. BestMoody'sAA2AbbbBaa2
Moody'sS&PA2A+Not ratedBaa2A-
S&PFitchAA+ABBB+
A.M. Best, Moody’s, and S&P eachand Fitch maintain a stable outlook onoutlooks across the Company.Company’s Financial Strength and Senior Debt Ratings.
CNA Insurance Company Limited isand CNA Insurance Company (Europe) S.A. are included within the CCC group as part of S&P’s rating. Hardy, throughInsurer Financial Strength Rating for the Company. Syndicate 382 benefits from the collective financial strengthFinancial Strength Rating of the Lloyd’s, market, which is rated A+ by S&P with a stable outlook and A by A.M. Best with a stable outlook.outlooks.


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ACCOUNTING STANDARDS UPDATE
For a discussion of Accounting Standards, Updates adopted as of January 1, 2017 and that will be adopted in the future, see Note A to the Consolidated Financial Statements included under Item 8.
FORWARD-LOOKING STATEMENTS
This report contains a number of forward-looking statements which relate to anticipated future events rather than actual present conditions or historical events. These statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and generally include words such as “believes,” “expects,” “intends,” “anticipates,” “estimates” and similar expressions. Forward-looking statements in this report include any and all statements regarding expected developments in our insurance business, including losses and loss reserves (note that loss reserves for long term care, A&EP and other mass tort claims which are more uncertain, and therefore more difficult to estimate than loss reserves respecting traditional property and casualty exposures;exposures); the impact of routine ongoing insurance reserve reviews we are conducting; our expectations concerning our revenues, earnings, expenses and investment activities; volatility in investment returns; expected cost savings and other results from our expense reduction activities; and our proposed actions in response to trends in our business. Forward-looking statements, by their nature, are subject to a variety of inherent risks and uncertainties that could cause actual results to differ materially from the results projected in the forward-looking statement. We cannot control many of these risks and uncertainties. These risks and uncertainties include, but are not limited to, the following:
Company-Specific Factors
the risks and uncertainties associated with our insurance reserves, as outlined in the Critical Accounting Estimates and the Reserves - Estimates and Uncertainties sections of this report, including the sufficiency of the reserves and the possibility for future increases, which would be reflected in the results of operations in the period that the need for such adjustment is determined;
the risk that the other parties to the transactiontransactions in which, subject to certain limitations, we ceded our legacy A&EP and EWC liabilities, respectively, will not fully perform their respective obligations to CNA, the uncertainty in estimating loss reserves for A&EP and EWC liabilities and the possible continued exposure of CNA to liabilities for A&EP and EWC claims that are not covered under the terms of the transaction;respective transactions;
the performance of reinsurance companies under reinsurance contracts with us; and
the risks and uncertainties associated with potential acquisitions and divestitures, including the consummation of such transactions, the successful integration of acquired operations and the potential for subsequent impairment of goodwill or intangible assets.
Industry and General Market Factors
the COVID-19 pandemic and measures to mitigate the spread of the virus may continue to result in increased claims and related litigation risk across our enterprise;
the impact of competitive products, policies and pricing and the competitive environment in which we operate, including changes in our book of business;
product and policy availability and demand and market responses, including the level of ability to obtain rate increases and decline or non-renew underpriced accounts, to achieve premium targets and profitability and to realize growth and retention estimates;
general economic and business conditions, including recessionary conditions that may decrease the size and number of our insurance customers and create additional losses to our lines of business especially those that provide management and professional liability insurance, as well as surety bonds, to businesses engaged in real estate, financial services and professional services and inflationary pressures on medical care costs, construction costs and other economic sectors, as well as social inflation, that increase the severity of claims;
conditions in the capital and credit markets, including continuing uncertainty and instability in these markets, as well as the overall economy, and their impact on the returns, types, liquidity and valuation of our investments;
conditions in the capital and credit markets that may limit our ability to raise significant amounts of capital on favorable terms; and
the possibility of changes in our ratings by ratings agencies, including the inability to access certain markets or distribution channels and the required collateralization of future payment obligations as a result of such changes, and changes in rating agency policies and practices.

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Regulatory and Legal Factors
regulatory and legal initiatives and compliance with governmental regulations and other legal requirements, including with respect to cyber security protocols (which may be enhanced following completion of work relating to the sophisticated cyber incident sustained by the Company in March 2021 as discussed in Risk Factors, Part I, Item 1A of this report), legal inquiries by state authorities, judicial interpretations within the regulatory framework, including interpretation of policy provisions, decisions regarding coverage and theories of liability, legislative actions that increase claimant activity, including those revising applicability of statutes of limitations, trends in litigation and the outcome of any litigation involving us and rulings and changes in tax laws and regulations;
regulatory limitations, impositions and restrictions upon us, including with respect to our ability to increase premium rates, and the effects of assessments and other surcharges for guaranty funds and second-injury funds, other mandatory pooling arrangements and future assessments levied on insurance companies; and
regulatory limitations and restrictions, including limitations upon our ability to receive dividends from our insurance subsidiaries, imposed by regulatory authorities, including regulatory capital adequacy standards; and
regulatory and legal implications relating to the sophisticated cyber incident sustained by the Company in March 2021 that may arise.
Impact of Catastrophic EventsNatural and Related DevelopmentsMan-Made Disasters and Mass Tort Claims
weather and other natural physical events, including the severity and frequency of storms, hail, snowfall and other winter conditions, natural disasters such as hurricanes and earthquakes, as well as climate change, including effects on global weather patterns, greenhouse gases, sea, land and air temperatures, sea levels, wildfires, rain, hail and snow;
regulatory requirements imposed by coastal state regulators in the wake of hurricanes or other natural disasters, including limitations on the ability to exit markets or to non-renew, cancel or change terms and conditions in policies, as well as mandatory assessments to fund any shortfalls arising from the inability of quasi-governmental insurers to pay claims;
man-made disasters, including the possible occurrence of terrorist attacks, the unpredictability of the nature, targets, severity or frequency of such events, and the effect of the absence or insufficiency of applicable terrorism legislation on coverages; and
the occurrence of epidemics.epidemics and pandemics; and
Referendum on the United Kingdom's Membership in the European Union
in 2016, the United Kingdom (U.K.) held a referendum in which voters approved an exitmass tort claims, including those related to exposure to potentially harmful products or substances such as glyphosate, lead paint and opioids; and claims arising from the E.U., commonly referredchanges that repeal or weaken tort reforms, such as those related to as "Brexit." As a result of the referendum, in 2017 the British government formally commenced the process to leave the E.U. and began negotiating the terms of treaties that will govern the U.K.'s future relationship with the E.U. Although the terms of any future treaties are unknown, we believe changes in our international operating platform will be required to allow us to continue to write business in the E.U. after the completion of Brexit. Therefore, we have begun the process of establishing a new European subsidiary in Luxembourg. As a result of these changes, the complexity and cost of regulatory compliance of our European business is likely to increase.abuse reviver statutes.
Our forward-looking statements speak only as of the date of the filing of this Annual Report on Form 10-K and we do not undertake any obligation to update or revise any forward-looking statement to reflect events or circumstances after the date of the statement,filing of this Annual Report on Form 10-K, even if our expectations or any related events or circumstances change.

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ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Our financial instruments are exposed to various market risks, such as interest rate risk, equity price risk and foreign currency risk. Due to the level of risk associated with certain invested assets and the level of uncertainty related to changes in the value of these assets, it is possible that changes in these risks in the near term could have a material adverse impact on our results of operations, financial condition or equity.
Discussions herein regarding market risk focus on only one element of market risk, which is price risk. Price risk relates to changes in the level of prices due to changes in interest rates, equity prices, foreign exchange rates or other factors such as credit spreads. The fair value of our financial instruments is generally adversely affected when interest rates rise, equity markets decline or the dollar strengthens against foreign currency.
Active management of market risk is integral to our operations. We may take the following actions to manage our exposure to market risk within defined tolerance ranges: (1) change the character of future investments purchased or sold or (2) use derivatives to offset the market behavior of existing assets and liabilities or assets expected to be purchased and liabilities expected to be incurred.
Sensitivity Analysis
We monitor our sensitivity to interest rate changes by revaluing financial assets and liabilities using a variety of different interest rates. The Company uses duration and convexity at the security level to estimate the change in fair value that would result from a change in each security's yield. Duration measures the price sensitivity of an asset to changes in the yield rate.yield. Convexity measures how the duration of the asset changes with interest rates. The duration and convexity analysis takes into account the unique characteristics (e.g., call and put options and prepayment expectations) of each security in determining the hypothetical change in fair value. The analysis is performed at the security level and aggregated up to the asset category levels for reporting in the tables below.
The evaluation is performed by applying an instantaneous change in yield rates of varying magnitudes on a static balance sheet to determine the effect such a change in rates would have on our fair value at risk and the resulting effect on stockholders' equity. The analysis presents the sensitivity of the fair value of our financial instruments to selected changes in capital market rates and index levels. The range of change chosen reflects our view of changes that are reasonably possible over a one-year period. The selection of the range of values chosen to represent changes in interest rates should not be construed as our prediction of future market events, but rather an illustration of the impact of such events.
The sensitivity analysis estimates the decline in the fair value of our interest sensitive assets and liabilities that were held as of December 31, 20172021 and 20162020 due to an instantaneous change in the yield of the security at the end of the period of 100 and 150 basis points, with all other variables held constant.
The sensitivity analysis also assumes an instantaneous 10% and 20% decline in the foreign currency exchange rates versus the United States dollar from their levels as of December 31, 20172021 and 2016,2020, with all other variables held constant.
Equity price risk was measured assuming an instantaneous 10% and 25% decline in the S&P 500 from its level as of December 31, 20172021 and 2016,2020, with all other variables held constant. Our common stock holdings, which are included in equity securities, were assumed to be highly and positively correlated with the S&P 500 index. TheFor our limited partnership holdings, the estimated change in value was largely derived from a beta analysis calculation of limited partnerships are also affected by changes in equity markets, so a model was developedhistorical experience of our portfolio and indices with similar strategies relative to analyze the observed changes in the value of limited partnerships held by the Company over a multiple year period along with the corresponding changes in the S&P 500 index. The result500.
52

Table of the model allowed us to estimate the change in value of limited partnerships due to equity risk.Contents





The following tables present the estimated effects on the fair value of our financial instruments as of December 31, 20172021 and 20162020 due to an increase in yield rates of 100 basis points, a 10% decline in foreign currency exchange rates and a 10% decline in the S&P 500, with all other variables held constant.
Market Risk Scenario 1
December 31, 2021Increase (Decrease)
(In millions)Estimated Fair ValueInterest Rate RiskForeign Currency RiskEquity Price Risk
Assets:
Fixed maturity securities (1)
$44,380 $(3,061)$(265)$— 
Equity securities1,035 (28)(1)(27)
Limited partnership investments1,859 — — (74)
Other invested assets91 — (8)— 
Mortgage loans (2)
1,018 (44)— — 
Short term investments1,990 (3)(19)— 
Total assets50,373 (3,136)(293)(101)
Derivative financial instruments, included in Other liabilities(12)35 — — 
Total$50,361 $(3,101)$(293)$(101)
Long term debt (3)
$2,978 $(134)$— $— 
December 31, 2017  Increase (Decrease)
December 31, 2020December 31, 2020Increase (Decrease)
(In millions)Estimated Fair Value Interest Rate Risk Foreign Currency Risk Equity Price Risk(In millions)Estimated Fair ValueInterest Rate RiskForeign Currency RiskEquity Price Risk
Assets:       Assets:
Fixed maturity securities$41,487
 $(2,559) $(215) $
Fixed maturity securities (1)
Fixed maturity securities (1)
$44,631 $(2,963)$(257)$— 
Equity securities695
 (26) (2) (6)Equity securities992 (30)(1)(23)
Limited partnership investments2,369
 
 
 (95)Limited partnership investments1,619 — — (65)
Other invested assets44
 
 (3) 
Other invested assets76 — (6)— 
Mortgage loans (1)
844
 (40) 
 
Mortgage loans (2)
Mortgage loans (2)
1,151 (51)— — 
Short term investments1,436
 (1) (10) 
Short term investments1,907 (2)(13)— 
Total assets46,875
 (2,626) (230) (101)Total assets50,376 (3,046)(277)(88)
Derivative financial instruments, included in Other liabilities(3) 17
 
 
Derivative financial instruments, included in Other liabilities(19)20 — — 
Total securities$46,872
 $(2,609) $(230) $(101)
Long term debt (1)
$2,896
 $(148) $
 $
TotalTotal$50,357 $(3,026)$(277)$(88)
Long term debt (3)
Long term debt (3)
$3,148 $(169)$— $— 
(1)    From a financial reporting perspective, Shadow Adjustments related to Life & Group reserves would reduce the impact of the decrease in fixed maturity securities.
(2)    Reported at amortized value, less allowance for uncollectible receivables, in the Consolidated Balance Sheets included under Item 8 and not adjusted for fair value changes.
(3)    Reported at amortized value in the Consolidated Balance Sheets included under Item 8 and not adjusted for fair value changes.

Market Risk Scenario 1
53

December 31, 2016  Increase (Decrease)
(In millions)Estimated Fair Value Interest Rate Risk Foreign Currency Risk Equity Price Risk
Assets:       
Fixed maturity securities$40,905
 $(2,571) $(189) $(1)
Equity securities110
 (7) (1) (11)
Limited partnership investments2,371
 
 
 (95)
Other invested assets36
 
 (3) 
Mortgage loans (1)
594
 (30) 
 
Short term investments1,407
 (1) (9) 
Total assets45,423
 (2,609) (202) (107)
Derivative financial instruments, included in Other liabilities3
 13
 
 
Total securities$45,426
 $(2,596) $(202) $(107)
Long term debt (1)
$2,952
 $(137) $
 $
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(1)    Reported at amortized value in the Consolidated Balance Sheets included under Item 8 and not adjusted for fair value changes.

The following tables present the estimated effects on the fair value of our financial instruments as of December 31, 20172021 and 20162020 due to an increase in yield rates of 150 basis points, a 20% decline in foreign currency exchange rates and a 25% decline in the S&P 500, with all other variables held constant.
Market Risk Scenario 2
December 31, 2021Increase (Decrease)
(In millions)Estimated Fair ValueInterest Rate RiskForeign Currency RiskEquity Price Risk
Assets:
Fixed maturity securities (1)
$44,380 $(4,590)$(530)$— 
Equity securities1,035 (42)(1)(66)
Limited partnership investments1,859 — — (186)
Other invested assets91 — (17)— 
Mortgage loans (2)
1,018 (65)— — 
Short term investments1,990 (4)(37)— 
Total assets50,373 (4,701)(585)(252)
Derivative financial instruments, included in Other liabilities(12)53 — — 
Total$50,361 $(4,648)$(585)$(252)
Long term debt (3)
$2,978 $(202)$— $— 
December 31, 2017  Increase (Decrease)
December 31, 2020December 31, 2020Increase (Decrease)
(In millions)Estimated Fair Value Interest Rate Risk Foreign Currency Risk Equity Price Risk(In millions)Estimated Fair ValueInterest Rate RiskForeign Currency RiskEquity Price Risk
Assets:       Assets:
Fixed maturity securities$41,487
 $(3,839) $(429) $
Fixed maturity securities (1)
Fixed maturity securities (1)
$44,631 $(4,443)$(513)$— 
Equity securities695
 (38) (4) (16)Equity securities992 (45)(2)(57)
Limited partnership investments2,369
 
 
 (237)Limited partnership investments1,619 — — (162)
Other invested assets44
 
 (7) 
Other invested assets76 — (12)— 
Mortgage loans (1)
844
 (60) 
 
Mortgage loans (2)
Mortgage loans (2)
1,151 (76)— — 
Short term investments1,436
 (2) (20) 
Short term investments1,907 (3)(26)— 
Total assets46,875
 (3,939) (460) (253)Total assets50,376 (4,567)(553)(219)
Derivative financial instruments, included in Other liabilities(3) 25
 
 
Derivative financial instruments, included in Other liabilities(19)30 — — 
Total securities$46,872
 $(3,914) $(460) $(253)
Long term debt (1)
$2,896
 $(221) $
 $
TotalTotal$50,357 $(4,537)$(553)$(219)
Long term debt (3)
Long term debt (3)
$3,148 $(254)$— $— 
(1)    From a financial reporting perspective, Shadow Adjustments related to Life & Group reserves would reduce the impact of the decrease in fixed maturity securities.
(2)    Reported at amortized value, less allowance for uncollectible receivables, in the Consolidated Balance Sheets included under Item 8 and not adjusted for fair value changes.
(3)    Reported at amortized value in the Consolidated Balance Sheets included under Item 8 and not adjusted for fair value changes.

Market Risk Scenario 2
54
December 31, 2016  Increase (Decrease)
(In millions)Estimated Fair Value Interest Rate Risk Foreign Currency Risk Equity Price Risk
Assets:       
Fixed maturity securities$40,905
 $(3,855) $(379) $(2)
Equity securities110
 (11) (3) (28)
Limited partnership investments2,371
 
 
 (237)
Other invested assets36
 
 (5) 
Mortgage loans (1)
594
 (45) 
 
Short term investments1,407
 (2) (17) 
Total assets45,423
 (3,913) (404) (267)
Derivative financial instruments, included in Other liabilities3
 20
 
 
Total securities$45,426
 $(3,893) $(404) $(267)
Long term debt (1)
$2,952
 $(205) $
 $


(1)    Reported at amortized value in the Consolidated Balance Sheets included under Item 8 and not adjusted for fair value changes.


ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
CNA Financial Corporation
Consolidated Statements of Operations
Years ended December 31     Years ended December 31
(In millions, except per share data)2017 2016 2015(In millions, except per share data)202120202019
Revenues     Revenues
Net earned premiums$6,988
 $6,924
 $6,921
Net earned premiums$8,175 $7,649 $7,428 
Net investment income2,034
 1,988
 1,840
Net investment income2,159 1,935 2,118 
Net realized investment gains (losses):   
  
Other-than-temporary impairment losses(14) (81) (156)
Other net realized investment gains107
 131
 89
Net realized investment gains (losses)93
 50
 (67)
Net investment gains (losses)Net investment gains (losses)120 (54)29 
Non-insurance warranty revenueNon-insurance warranty revenue1,430 1,252 1,161 
Other revenues427
 404
 407
Other revenues24 26 31 
Total revenues9,542
 9,366
 9,101
Total revenues11,908 10,808 10,767 
Claims, Benefits and Expenses     Claims, Benefits and Expenses
Insurance claims and policyholders’ benefits5,310
 5,283
 5,384
Insurance claims and policyholders’ benefits6,349 6,170 5,806 
Amortization of deferred acquisition costs1,233
 1,235
 1,540
Amortization of deferred acquisition costs1,443 1,410 1,383 
Non-insurance warranty expenseNon-insurance warranty expense1,328 1,159 1,082 
Other operating expenses1,528
 1,552
 1,473
Other operating expenses1,191 1,126 1,142 
Interest161
 159
 155
Interest113 122 131 
Total claims, benefits and expenses8,232
 8,229
 8,552
Total claims, benefits and expenses10,424 9,987 9,544 
Income before income tax1,310
 1,137
 549
Income before income tax1,484 821 1,223 
Income tax expense(411) (278) (70)Income tax expense(282)(131)(223)
Net income$899
 $859
 $479
Net income$1,202 $690 $1,000 
     
Basic earnings per share$3.32
 $3.18
 $1.77
Basic earnings per share$4.42 $2.54 $3.68 
     
Diluted earnings per share$3.30
 $3.17
 $1.77
Diluted earnings per share$4.41 $2.53 $3.67 
     
Dividends declared per share$3.10
 $3.00
 $3.00
     
Weighted Average Outstanding Common Stock and Common Stock Equivalents     Weighted Average Outstanding Common Stock and Common Stock Equivalents
Basic271.1
 270.4
 270.2
Basic271.8271.6271.6
Diluted272.1
 271.1
 270.7
Diluted272.8272.4272.5
The accompanying Notes are an integral part of these Consolidated Financial Statements.



55


CNA Financial Corporation
Consolidated Statements of Comprehensive Income (Loss)
Years ended December 31     Years ended December 31
(In millions)2017 2016 2015(In millions)202120202019
Comprehensive Income (Loss)     Comprehensive Income (Loss)
Net income$899
 $859
 $479
Net income$1,202 $690 $1,000 
Other Comprehensive Income (Loss), Net of Tax     
Other Comprehensive Income (Loss), net of taxOther Comprehensive Income (Loss), net of tax
Changes in:     Changes in:
Net unrealized gains on investments with other-than-temporary impairments(5) 3
 (9)
Net unrealized gains on other investments108
 252
 (552)
Net unrealized gains on investments103
 255
 (561)
Net unrealized gains and losses on investments with an allowance for credit lossesNet unrealized gains and losses on investments with an allowance for credit losses(2)— — 
Net unrealized gains and losses on other investmentsNet unrealized gains and losses on other investments(706)720 948 
Net unrealized gains and losses on investmentsNet unrealized gains and losses on investments(708)720 948 
Foreign currency translation adjustment100
 (114) (139)Foreign currency translation adjustment(19)47 39 
Pension and postretirement benefits2
 1
 (15)Pension and postretirement benefits244 (15)(58)
Other comprehensive income (loss), net of tax205
 142
 (715)
Total comprehensive income (loss)$1,104
 $1,001
 $(236)
Other comprehensive (loss) income, net of taxOther comprehensive (loss) income, net of tax(483)752 929 
Total comprehensive incomeTotal comprehensive income$719 $1,442 $1,929 
The accompanying Notes are an integral part of these Consolidated Financial Statements.

56

Table of Contents
CNA Financial Corporation
Consolidated Balance Sheets
December 31   December 31
(In millions, except share data)2017 2016(In millions, except share data)20212020
Assets   Assets  
Investments:   Investments:  
Fixed maturity securities at fair value (amortized cost of $38,215 and $38,361)$41,487
 $40,905
Equity securities at fair value (cost of $659 and $106)695
 110
Fixed maturity securities at fair value (amortized cost of $39,952 and $38,953, less allowance for credit loss of $18 and $40)Fixed maturity securities at fair value (amortized cost of $39,952 and $38,953, less allowance for credit loss of $18 and $40)$44,380 $44,631 
Equity securities at fair value (cost of $964 and $941)Equity securities at fair value (cost of $964 and $941)1,035 992 
Limited partnership investments2,369
 2,371
Limited partnership investments1,859 1,619 
Other invested assets44
 36
Other invested assets91 76 
Mortgage loans839
 591
Mortgage loans (less allowance for uncollectible receivables of $16 and $26)Mortgage loans (less allowance for uncollectible receivables of $16 and $26)973 1,068 
Short term investments1,436
 1,407
Short term investments1,990 1,907 
Total investments46,870
 45,420
Total investments50,328 50,293 
Cash355
 271
Cash536 419 
Reinsurance receivables (less allowance for uncollectible receivables of $29 and $37)4,261
 4,416
Insurance receivables (less allowance for uncollectible receivables of $44 and $46)2,292
 2,209
Reinsurance receivables (less allowance for uncollectible receivables of $21 and $21)Reinsurance receivables (less allowance for uncollectible receivables of $21 and $21)5,463 4,457 
Insurance receivables (less allowance for uncollectible receivables of $29 and $33)Insurance receivables (less allowance for uncollectible receivables of $29 and $33)2,945 2,607 
Accrued investment income411
 405
Accrued investment income377 380 
Deferred acquisition costs634
 600
Deferred acquisition costs737 708 
Deferred income taxes137
 379
Deferred income taxes142 66 
Property and equipment at cost (less accumulated depreciation of $274 and $254)326
 310
Property and equipment at cost (less accumulated depreciation of $255 and $231)Property and equipment at cost (less accumulated depreciation of $255 and $231)226 252 
Goodwill148
 145
Goodwill148 148 
Deferred non-insurance warranty acquisition expenseDeferred non-insurance warranty acquisition expense3,476 3,068 
Other assets1,133
 1,078
Other assets2,261 1,628 
Total assets$56,567
 $55,233
Total assets$66,639 $64,026 
Liabilities 
  
Liabilities  
Insurance reserves:   
Insurance reserves: 
Claim and claim adjustment expenses$22,004
 $22,343
Claim and claim adjustment expenses$24,174 $22,706 
Unearned premiums4,029
 3,762
Unearned premiums5,761 5,119 
Future policy benefits11,179
 10,326
Future policy benefits13,236 13,318 
Short term debt150
 
Long term debt2,708
 2,710
Long term debt2,779 2,776 
Other liabilities (includes $143 and $50 due to Loews Corporation)4,253
 4,123
Deferred non-insurance warranty revenueDeferred non-insurance warranty revenue4,503 4,023 
Other liabilities (includes $56 and $89 due to Loews Corporation)Other liabilities (includes $56 and $89 due to Loews Corporation)3,377 3,377 
Total liabilities44,323
 43,264
Total liabilities53,830 51,319 
Commitments and contingencies (Notes B, F and L)

 

Commitments and contingencies (Notes B and F)Commitments and contingencies (Notes B and F)0
Stockholders' Equity 
  
Stockholders' Equity  
Common stock ($2.50 par value; 500,000,000 shares authorized; 273,040,243 shares issued; 271,205,390 and 270,495,998 shares outstanding)683
 683
Common stock ($2.50 par value; 500,000,000 shares authorized; 273,040,243 shares issued; 271,363,999 and 271,391,603 shares outstanding)Common stock ($2.50 par value; 500,000,000 shares authorized; 273,040,243 shares issued; 271,363,999 and 271,391,603 shares outstanding)683 683 
Additional paid-in capital2,175
 2,173
Additional paid-in capital2,215 2,211 
Retained earnings9,414
 9,359
Retained earnings9,663 9,081 
Accumulated other comprehensive income (loss)32
 (173)
Treasury stock (1,834,853 and 2,544,245 shares), at cost(60) (73)
Accumulated other comprehensive incomeAccumulated other comprehensive income320 803 
Treasury stock (1,676,244 and 1,648,640 shares), at costTreasury stock (1,676,244 and 1,648,640 shares), at cost(72)(71)
Total stockholders’ equity12,244
 11,969
Total stockholders’ equity12,809 12,707 
Total liabilities and stockholders' equity$56,567
 $55,233
Total liabilities and stockholders' equity$66,639 $64,026 
The accompanying Notes are an integral part of these Consolidated Financial Statements.

57

Table of Contents
CNA Financial Corporation
Consolidated Statements of Cash Flows
Years ended December 31     Years ended December 31
(In millions)2017 2016 2015(In millions)202120202019
Cash Flows from Operating Activities     Cash Flows from Operating Activities  
Net income$899
 $859
 $479
Net income$1,202 $690 $1,000 
Adjustments to reconcile net income to net cash flows provided by operating activities:     Adjustments to reconcile net income to net cash flows provided by operating activities:
Deferred income tax expense (benefit)168
 136
 (150)Deferred income tax expense (benefit)47 (49)(46)
Trading portfolio activity9
 (9) 17
Trading portfolio activity20 (5)(16)
Net realized investment (gains) losses(93) (50) 67
Net investment (gains) lossesNet investment (gains) losses(120)54 (29)
Equity method investees84
 238
 195
Equity method investees(127)(8)11 
Net amortization of investments(40) (27) 17
Net amortization of investments(81)(67)(89)
Depreciation and amortization88
 77
 84
Depreciation and amortization54 60 68 
Changes in:     Changes in:
Receivables, net92
 (130) 82
Receivables, net(1,358)(409)137 
Accrued investment income(4) (3) (1)Accrued investment income16 (3)
Deferred acquisition costs(24) (8) 311
Deferred acquisition costs(30)(43)(26)
Insurance reserves22
 237
 241
Insurance reserves2,463 1,681 358 
Other assets(158) (95) (79)
Other liabilities173
 162
 126
Other, net38
 29
 (2)Other, net(76)(145)(225)
Total adjustments355
 557
 908
Net cash flows provided by operating activities1,254
 1,416
 1,387
Net cash flows provided by operating activities1,997 1,775 1,140 
Cash Flows from Investing Activities 
  
  Cash Flows from Investing Activities  
Dispositions:     Dispositions:
Fixed maturity securities - sales5,438
 5,328
 4,390
Fixed maturity securities - sales3,816 5,904 5,842 
Fixed maturity securities - maturities, calls and redemptions3,641
 3,219
 4,095
Fixed maturity securities - maturities, calls and redemptions4,464 3,760 2,997 
Equity securities46
 81
 57
Equity securities316 355 214 
Limited partnerships192
 290
 174
Limited partnerships246 373 479 
Mortgage loans26
 207
 26
Mortgage loans190 74 143 
Purchases:     Purchases:
Fixed maturity securities(9,065) (9,827) (8,675)Fixed maturity securities(9,307)(10,269)(8,661)
Equity securities(166) 
 (62)Equity securities(304)(452)(186)
Limited partnerships(171) (252) (188)Limited partnerships(440)(224)(198)
Mortgage loans(274) (120) (123)Mortgage loans(95)(172)(298)
Change in other investments(3) 7
 4
Change in other investments(6)(8)(11)
Change in short term investments(6) 258
 34
Change in short term investments(83)(39)(535)
Purchases of property and equipment(102) (146) (125)Purchases of property and equipment(26)(23)(26)
Disposals of property and equipment
 107
 
Other, net20
 2
 21
Other, net16 15 
Net cash flows used by investing activities$(424) $(846) $(372)Net cash flows used by investing activities(1,228)(705)(225)
Cash Flows from Financing ActivitiesCash Flows from Financing Activities
Dividends paid to common stockholdersDividends paid to common stockholders(621)(950)(929)
Proceeds from the issuance of debtProceeds from the issuance of debt— 495 496 
Repayment of debtRepayment of debt— (419)(520)
Purchase of treasury stockPurchase of treasury stock(18)(18)(23)
Other, netOther, net(9)(10)(12)
Net cash flows used by financing activitiesNet cash flows used by financing activities(648)(902)(988)
Effect of foreign exchange rate changes on cashEffect of foreign exchange rate changes on cash(4)
Net change in cashNet change in cash117 177 (68)
Cash, beginning of yearCash, beginning of year419 242 310 
Cash, end of periodCash, end of period$536 $419 $242 
The accompanying Notes are an integral part of these Consolidated Financial Statements.

58
Years ended December 31     
(In millions)2017 2016 2015
Cash Flows from Financing Activities     
Dividends paid to common stockholders$(842) $(813) $(811)
Proceeds from the issuance of debt496
 498
 
Repayment of debt(391) (358) 
Other, net(18) 
 4
Net cash flows used by financing activities(755)
(673) (807)
Effect of foreign exchange rate changes on cash9
 (13) (11)
Net change in cash84
 (116) 197
Cash, beginning of year271
 387
 190
Cash, end of year$355
 $271
 $387

Table of Contents
CNA Financial Corporation
Consolidated Statements of Stockholders' Equity
Years ended December 31
(In millions)202120202019
Common Stock
Balance, beginning of year$683 $683 $683 
Balance, end of year683 683 683 
Additional Paid-in Capital
Balance, beginning of year2,211 2,203 2,192 
Stock-based compensation11 
Balance, end of year2,215 2,211 2,203 
Retained Earnings
Balance, beginning of year, as previously reported9,081 9,348 9,277 
Cumulative effect adjustments from changes in accounting guidance, net of tax— (5)— 
Balance, beginning of year, as adjusted9,081 9,343 9,277 
Dividends to common stockholders ($2.27, $3.48, and $3.40 per share)(620)(952)(929)
Net income1,202 690 1,000 
Balance, end of year9,663 9,081 9,348 
Accumulated Other Comprehensive Income (Loss)
Balance, beginning of year, as previously reported803 51 (878)
Other comprehensive (loss) income(483)752 929 
Balance, end of year320 803 51 
Treasury Stock
Balance, beginning of year(71)(70)(57)
Stock-based compensation17 17 10 
Purchase of treasury stock(18)(18)(23)
Balance, end of year(72)(71)(70)
Total stockholders' equity$12,809 $12,707 $12,215 
The accompanying Notes are an integral part of these Consolidated Financial Statements.


CNA Financial Corporation
Consolidated Statements of Stockholders' Equity
59
Years ended December 31     
(In millions)2017 2016 2015
Common Stock     
Balance, beginning of year$683
 $683
 $683
Balance, end of year683
 683
 683
Additional Paid-in Capital     
Balance, beginning of year2,173
 2,153
 2,151
Stock-based compensation2
 20
 2
Balance, end of year2,175
 2,173
 2,153
Retained Earnings     
Balance, beginning of year9,359
 9,313
 9,645
Dividends paid to common stockholders(844) (813) (811)
Net income899
 859
 479
Balance, end of year9,414
 9,359
 9,313
Accumulated Other Comprehensive Income (Loss)     
Balance, beginning of year(173) (315) 400
Other comprehensive income (loss)205
 142
 (715)
Balance, end of year32
 (173) (315)
Treasury Stock     
Balance, beginning of year(73) (78) (84)
Stock-based compensation13
 5
 6
Balance, end of year(60) (73) (78)
Notes Receivable for the Issuance of Common Stock     
Balance, beginning of year
 
 (1)
Decrease in notes receivable for common stock

 
 1
Balance, end of year
 
 
Total stockholders' equity$12,244
 $11,969
 $11,756

The accompanying Notes are an integral part
Table of these Consolidated Financial Statements.Contents



CNA Financial Corporation
Notes to Consolidated Financial Statements
Note A. Summary of Significant Accounting Policies
Basis of Presentation
The Consolidated Financial Statements include the accounts of CNA Financial Corporation (CNAF) and its subsidiaries. Collectively, CNAF and its subsidiaries are referred to as CNA or the Company. Loews Corporation (Loews) owned approximately 89%89.6% of the outstanding common stock of CNAF as of December 31, 2017.2021.
The accompanying Consolidated Financial Statements have been prepared in conformity with accounting principles generally accepted in the United States of America (GAAP). Intercompany amounts have been eliminated. The preparation of Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates.
Recently Adopted Accounting Standards Updates (ASU)
ASU 2016-13: In June 2016 the Financial Accounting Standards Board (FASB) issued ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The updated accounting guidance required changes to the recognition of credit losses on financial instruments not accounted for at fair value through the Company’s results of operations. For financial assets measured at cost, the expected credit loss model requires immediate recognition of estimated credit losses over the life of the asset and presentation of the asset at the net amount expected to be collected. This updated guidance applies to mortgage loan investments, reinsurance and insurance receivables and other financing receivables. For available-for-sale fixed maturity securities carried at fair value, estimated credit losses will continue to be measured at the present value of expected cash flows, however, the other than temporary impairment (OTTI) concept has been eliminated. Under the previous guidance, estimated credit impairments resulted in a write-down of amortized cost. Under the updated guidance, estimated credit losses are recognized through an allowance and reversals of the allowance are permitted if the estimate of credit losses declines. For available-for-sale fixed maturity securities where the Company has an intent to sell, impairment will continue to result in a write-down of amortized cost.
On January 1, 2020, the Company adopted the updated guidance using a modified retrospective method with a cumulative effect adjustment recorded to beginning Retained earnings. Prior period amounts have not been adjusted and continue to be reported in accordance with the previous accounting guidance. A prospective transition approach is required for available-for-sale fixed maturity securities that were purchased with credit deterioration (PCD assets) or have recognized an OTTI write-down prior to the effective date. The cumulative effect of the accounting change resulted in a $5 million decrease in Retained earnings, with a corresponding $7 million allowance for credit losses recorded for Mortgage loans partially offset by a $2 million tax impact.
The allowance for uncollectible reinsurance and insurance receivables was unchanged as a result of adopting the updated guidance. At adoption, an allowance for credit losses of $6 million was established for available-for-sale fixed maturity securities that were PCD assets, with a corresponding increase to amortized cost, resulting in no adjustment to the carrying value of the securities.
See the accounting policy discussion within this Note, as well as Notes B and G to the Consolidated Financial Statements for additional information regarding credit losses.
60

Accounting Standards Pending Adoption
In August 2018, the FASB issued ASU 2018-12, Financial Services-Insurance (Topic 944): Targeted Improvements to the Accounting for Long-Duration Contracts. The updated accounting guidance requires changes to the measurement and disclosure of long-duration contracts. Entities will be required to update cash flow assumptions (including morbidity and persistency) at least annually, and to update discount rate assumptions quarterly using an upper-medium grade fixed-income instrument yield. The effect of changes in cash flow assumptions will be recorded in the Company's results of operations and the effect of changes in discount rate assumptions will be recorded in Other comprehensive income. The guidance is effective for interim and annual periods beginning after December 15, 2022, with early adoption permitted, and may be applied using either a modified retrospective transition method or a full retrospective transition method. Restatement of prior periods presented is required.
The Company will adopt the new guidance effective January 1, 2023, using the modified retrospective method applied as of the transition date of January 1, 2021. The most significant impact at the transition date will be the effect of updating the discount rate assumption to reflect an upper-medium grade fixed-income instrument yield, which will be partially offset by the de-recognition of shadow adjustments associated with long duration contracts. The Company expects the net impact of these changes will be a material decrease in Accumulated other comprehensive income as of the transition date. The requirement to update cash flow assumptions at least annually is expected to change the pattern of earnings emergence being recognized. Adoption will also significantly expand the Company’s disclosures, and will impact systems, processes, and controls. While the requirements of the new guidance represent a material change from existing GAAP, the new guidance will not impact capital and surplus under statutory accounting practices, related cash flows, or the underlying economics of the business.
The Company continues to make progress in connection with these matters and is in process of refining key accounting policy decisions, technology solutions and updates to internal controls associated with adoption of the new guidance. These in-progress activities include modifications of actuarial valuation systems, data sourcing, analytical procedures and reporting processes.
Insurance Operations
Premiums: Insurance premiums on property and casualty insurance contracts are recognized in proportion to the underlying risk insured and are principally earned ratably over the durationterm of the policies. Premiums on long term care contracts are earned ratably over the policy year in which they are due. The reserve for unearned premiums represents the portion of premiums written relating to the unexpired terms of coverage.
Insurance receivables include balances due currently or in the future, including amounts due from insureds related to losses under high deductible policies, and are presented at unpaid balances, net of an allowance for uncollectible receivables. Amounts are considered past due based on policy payment terms. The allowance is determined based on periodic evaluations of aged receivables, management's experience and current economic conditions. Insurance receivables and any related allowance are written off after collection efforts are exhausted or a negotiated settlement is reached.
Property and casualty contracts that are retrospectively rated or subject to audit premiums contain provisions that result in an adjustment to the initial policy premium depending on the contract provisions. These provisions andstipulate the adjustment due to loss experience of the insured during the experience period.coverage period, or changes in the level of exposure to insurance risk. For such contracts, the Company estimates the amount of ultimate premiums that the Company may earn upon completion of the experiencecoverage period and recognizes either an asset or a liability for the difference between the initial policy premium and the estimated ultimate premium. The Company either adjusts such estimated ultimate premium amounts during the course of the experiencecoverage period based on actual results to date.date, or by conducting premium audits after the policy has expired to determine the final exposure to insured risks. The resulting adjustment is recorded as either a reduction of or an increase to the earned premiums for the period.
Insurance receivables include balances due currently or in the future, including amounts due from insureds related to paid losses under high deductible policies, and are presented at unpaid balances, net of an allowance for uncollectible receivables. A loss rate methodology is used to determine expected credit losses for premium receivables. This methodology uses the Company’s historical annual credit losses relative to gross premium written to develop a range of credit loss rates for each dollar of gross written premium underwritten. Additionally, an expected credit loss for amounts due from insureds under high deductible and retrospectively rated policies is calculated on a pool basis, informed by historical default rate data obtained from major rating agencies. Changes in the allowance are presented as a component of Other operating expenses on the Consolidated Statements of Operations. Amounts are considered past due based on policy payment terms. Insurance receivables and any related allowance are written off after collection efforts are exhausted or a
61

negotiated settlement is reached. See the Credit Losses section of this note for additional information on the Company’s allowances for expected credit losses.
Claim and claim adjustment expense reserves: Claim and claim adjustment expense reserves, except reserves for structured settlements not associated with asbestos and environmental pollution (A&EP), workers' compensation lifetime claims and long term care claims, are not discounted and are based on i) case basis estimates for losses reported on direct business, adjusted in the aggregate for ultimate loss expectations; ii) estimates of incurred but not reported (IBNR) losses; iii) estimates of losses on assumed reinsurance; iv) estimates of future expenses to be incurred in the settlement of claims; v) estimates of salvage and subrogation recoveries and vi) estimates of amounts due from insureds related to losses under high deductible policies. Management considers current conditions and trends as well as past Company and industry experience in establishing these estimates. The effects of inflation, which can be significant, are implicitly considered in the reserving process and are part of the recorded reserve balance. Ceded claim and claim adjustment expense reserves are reported as a component of Reinsurance receivables on the Consolidated Balance Sheets.
Claim and claim adjustment expense reserves are presented net of anticipated amounts due from insureds related to losses under deductible policies of $1.2$1.1 billion and $1.2 billion as of December 31, 20172021 and 2016.2020. A significant portion of these amounts are supported by collateral. The Company has an allowance for uncollectible deductible amounts, which is presented as a component of the allowance for doubtful accounts included in Insurance receivables onthe Consolidated Balance Sheets.

Structured settlements have been negotiated for certain property and casualty insurance claims. Structured settlements are agreements to provide fixed periodic payments to claimants. The Company's obligations for structured settlements not funded by annuities are included in claim and claim adjustment expense reserves and carriedare discounted at present values determined usinga weighted average interest rates ranging from to 5.5% to 8.0%rate of 6.4% and 6.5% as of December 31, 20172021 and 2016.2020. As of December 31, 20172021 and 2016,2020, the discounted reserves for unfunded structured settlements were $527$503 million and $544$520 million, net of discount of $798$621 million and $841$657 million. For the years ended December 31, 2017, 20162021, 2020 and 2015,2019, the amount of interest recognized on the discounted reserves of unfunded structured settlements was $41$36 million, $42$35 million and $42$36 million, respectively. This interest accretion is presented as a component of Insurance claims and policyholders’ benefits on the Consolidated Statements of Operations, but is excluded from the Company’s disclosure of prior year loss reserve development.
Workers' compensation lifetime claim reserves are calculated using mortality assumptions determined through statutory regulation and economic factors. AtAs of December 31, 20172021 and 2016,2020, workers' compensation lifetime claim reserves are discounted at a 3.5% interest rate. As of December 31, 20172021 and 2016,2020, the discounted reserves for workers’ compensation lifetime claim reserves were $346$228 million and $371$258 million, net of discount of $190$97 million and $202$113 million. For the years ended December 31, 2017, 20162021, 2020 and 20152019, the amount of interest accretion recognized on the discounted reserves of workers’ compensation lifetime claim reserves was $19$12 million, $17$15 million and $20$21 million, respectively. This interest accretion is presented as a component of Insurance claims and policyholders' benefits on the Consolidated Statements of Operations, but is excluded from the Company's disclosure of prior year loss reserve development.
Long term care claim reserves for policyholders that are currently receiving benefits are calculated using mortality and morbidity assumptions based on Company and industry experience. LongThese long term care claim reserves are discounted at ana weighted average interest rate of 6.0%5.8% as of December 31, 20172021 and interest rates ranging from 4.5% to 6.8% as of December 31, 2016.2020. As of December 31, 20172021 and 2016,2020, such discounted reserves totaled $2.4 billion and $2.2$2.7 billion, net of discount of $446$428 million and $529$439 million.
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Future policy benefit reserves: Future policy benefit reserves represent the active life reserves related to the Company's long term care policies for policyholders that are not currently receiving benefits and are computed using the net level premium method, which incorporates actuarial assumptions as to morbidity, persistency, inclusive of mortality, discount rate, future premium rate adjustments and expenses. Expense assumptions primarily relate to claim adjudication. ActuarialThese assumptions generally vary by plan, age at issue, policy duration and gender. The initial assumptions are determined at issuance, including a margin for adverse deviation, and are locked in throughoutover the life of the contract unless a premium deficiency develops. Ifpolicy; however if a premium deficiency emerges, the assumptions are unlocked and deferred acquisition costs, if any, and the future policy benefit reserves are adjusted.increased. The December 31, 2015September 30, 2021 gross premium valuation (GPV) indicated that recorded reserves included a premium deficiencymargin of $296approximately $72 million. The indicated premium deficiency necessitated a charge to income that was affected by the write off of the entire long term care deferred acquisition cost asset of $289 million and an increase to active life reserves of $7 million. The GPV as of December 31, 2017 and 2016 indicated the carried reserves were sufficient; therefore there was no unlocking of assumptions. Interest rates for longLong term care active life reserves range from 6.6% to 7.0%for policy holders not currently receiving benefits are discounted at a weighted average interest rate of 5.3% and 5.4% as of December 31, 20172021 and 2016.2020.
Guaranty fund and other insurance-relatedIn circumstances where the cash flow projections supporting future policy benefit reserves are expected to result in profits being recognized in early future years followed by losses in later future years, the future policy benefit reserves are increased by an amount necessary to offset losses that are projected to be recognized in later future years. The Company has not recorded additional future policy benefit reserves for profits followed by losses.
Insurance-related assessments: Liabilities for guaranty fund and other insurance-related assessments are accrued when an assessment is probable, when it can be reasonably estimated and when the event obligating the entity to pay an imposed or probable assessment has occurred. Liabilities for guaranty funds and other insurance-related assessments are not discounted and are included as part of Other liabilities on the Consolidated Balance Sheets. As of December 31, 20172021 and 2016,2020, the liability balances were $121$79 million and $125$82 million.
Reinsurance: Reinsurance accounting allows for contractual cash flows to be reflected as premiums and losses. To qualify for reinsurance accounting, reinsurance agreements must include risk transfer. To meet risk transfer requirements, a reinsurance contract must include both insurance risk, consisting of underwriting and timing risk, and a reasonable possibility of a significant loss for the assuming entity.
Reinsurance receivables related to paid losses are presented at unpaid balances. Reinsurance receivables related to unpaid losses are estimated in a manner consistent with claim and claim adjustment expense reserves or future policy benefit reserves. Reinsurance receivables are reported net of an allowance for uncollectible amounts on the Consolidated Balance Sheets. The cost of reinsurance is primarily accounted for over the life of the underlying

reinsured policies using assumptions consistent with those used to account for the underlying policies or over the reinsurance contract period. The ceding of insurance does not discharge the primary liability of the Company.
The Company has established an allowance for uncollectible reinsurance receivables which relates to both amounts already billed on ceded paid losses as well as ceded reserves that will be billed when losses are paid in the future. For assessing expected credit losses, the Company separates reinsurance receivables into two pools: voluntary reinsurance receivables and involuntary receivables related to mandatory pools. The Company has not recorded an allowance for uncollectibleinvoluntary pools as there is no perceived credit risk. The principal credit quality indicator used in the valuation of the allowance on voluntary reinsurance receivables is estimatedthe financial strength rating of the reinsurer sourced from major rating agencies. If the reinsurer is unrated, an internal financial strength rating is assigned based on the basis of periodic evaluations of balances due from reinsurers, reinsurer solvency, industryCompany’s historical loss experience and current economic conditions.the Company’s assessment of reinsurance counterparty risk profile, which generally corresponds with a B rating. Reinsurer financial strength ratings are updated and reviewed on an annual basis or sooner if the Company becomes aware of significant changes related to a reinsurer. The allowance for uncollectible reinsurance receivables is estimated on the basis of periodic evaluations of balances due from reinsurers, reinsurer financial strength rating and solvency, industry experience and current and forecast economic conditions. Because billed receivables generally approximate 3%5% or less of total reinsurance receivables, the age of the reinsurance receivables related to paid losses is not a significant input into the allowance analysis. Changes in the allowance for uncollectible reinsurance receivables are presented as a component of Insurance claims and policyholders' benefits on the Consolidated Statements of Operations. See the Credit Losses section of this note for additional information on the Company's allowances for expected credit losses.
Amounts are considered past due based on the reinsurance contract terms. Reinsurance receivables related to paid losses and any related allowance are written off after collection efforts have been exhausted or a negotiated settlement is reached with the reinsurer. Reinsurance receivables from insolvent insurers related to paid losses are written off when the settlement due from the estate can be reasonably estimated. At the time reinsurance
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receivables related to paid losses are written off, any required adjustment to reinsurance receivables related to unpaid losses is recorded as a component of Insurance claims and policyholders' benefits on the Consolidated Statements of Operations.
Reinsurance contracts that do not effectively transfer the economic risk of loss on the underlying policies are recorded using the deposit method of accounting, which requires that premium paid or received by the ceding company or assuming company be accounted for as a deposit asset or liability. The Company had $8 million and $3 million recorded as deposit assets as of December 31, 2017 and 2016, and $4 million and $6 million recorded as deposit liabilities as of December 31, 2017 and 2016. Income on reinsurance contracts accounted for under the deposit method is recognized using an effective yield based on the anticipated timing of payments and the remaining life of the contract. When the anticipated timing of payments changes, the effective yield is recalculated to reflect actual payments to date and the estimated timing of future payments. The deposit asset or liability is adjusted to the amount that would have existed had the new effective yield been applied since the inception of the contract.
A loss portfolio transfer is a retroactive reinsurance contract. If the cumulative claim and allocated claim adjustment expenses ceded under a loss portfolio transfer exceed the consideration paid, the resulting gain from such excess is deferred and amortized into earnings in future periods in proportion to actual recoveries under the loss portfolio transfer. In any period in which there is a gain position and a revised estimate of claim and allocated claim adjustment expenses and the loss portfolio transfer is in a portion ofgain position, the deferred gain is cumulatively recognized in earningsrecalculated as if the revised estimate was available at the inception date of the loss portfolio transfer.transfer and the change in the deferred gain is recognized in earnings.
Deferred acquisition costs: Deferrable acquisition costs include commissions, premium taxes and certain underwriting and policy issuance costs which are incremental direct costs of successful contract acquisitions. Acquisition costs related to property and casualty business are deferred and amortized ratably over the period the related premiums are earned. Deferred acquisition costs are presented net of ceding commissions and other ceded acquisition costs.
The Company evaluates deferred acquisition costs for recoverability. Anticipated investment income is considered in the determination of the recoverability of deferred acquisition costs. Adjustments, if necessary, are recorded in current period results of operations.
Deferred acquisition costs relatedPolicyholder dividends: Policyholder dividends are paid to long term care contracts issued prior to January 1, 2004 include costs which vary withparticipating policyholders within the workers' compensation and are primarily related to the acquisitionsurety lines of business. As noted under Future policy benefit reserves, allNet written premiums for participating dividend policies were approximately 1% of total net written premiums for each of the long term care deferred acquisition costs of $289 million were written off as of December 31, 2015 in recognition of a premium deficiency.
Investments in life settlement contracts and related revenue recognition: Prior to 2002, the Company purchased investments in life settlement contracts. The Company obtained the ownership and beneficiary rights of an underlying life insurance policy through a life settlement contract with the owner of the life insurance contract.

The entire portfolio of life settlement contracts, which is included within the Life & Group segment, was determined to be held for sale as of December 31, 2016 as the Company reached an agreement on terms to sell the portfolio. As such, the Company adjusted the fair value to the estimated sales proceeds less cost to sell. This resulted in a $10 million loss recognized within Net realized investment gains for the yearyears ended December 31, 2016. The definitive Purchase2021, 2020 and Sale Agreement (PSA) related2019. Dividends to policyholders are accrued according to the portfolio was executed on March 7, 2017 (sale date). In connection therewith, the life settlement contracts and related sale proceeds were placed in escrow until the buyer was recognized as the owner and beneficiary of each individual life settlement contract by the life insurance company that issued the policy. AllCompany's best estimate of the contracts have been released from escrowamount to be paid in accordance with contractual provisions and applicable state laws. Dividends to policyholders are presented as a component of December 31, 2017. The Company derecognized the released contracts and recorded the consideration, including a note receivable, which is payable over three years and is carried at amortized cost less any valuation allowance. The note receivable of $46 million is included within Other assetsInsurance claims & policyholders' benefits on the December 31, 2017 Consolidated Balance SheetStatements of Operations and interest income is accreted to the principal balance of the note.
The fair value of the Company's investments in life settlement contracts was $58 million as of December 31, 2016, and was included in Other assetsliabilities on the Consolidated Balance Sheets. The cash receipts and payments related to the life settlement contracts prior to the sale date are included in Cash Flows from operating activities on the Consolidated Statements of Cash Flows. Cash receipts related to the sale of the life settlement contracts, as well as principal payments on the note receivable, are included in Cash Flows from investing activities.
Historically, the Company accounted for its investments in life settlement contracts using the fair value method. Under the fair value method, each life settlement contract is carried at its fair value at the end of each reporting period. The change in fair value estimated through the Company's internal valuation process, life insurance proceeds received and periodic maintenance costs, such as premiums, necessary to keep the underlying policy in force, were recorded in Other revenues on the Consolidated Statements of Operations.
The increase in fair value recognized in Other revenues for the years ended December 31, 2016 and 2015 on contracts still held at each respective period-end was $7 million and $1 million. The gains recognized during the years ended December 31, 2017, 2016 and 2015 on contracts that settled were $3 million, $8 million and $24 million.
Investments
The Company classifies its fixed maturity securities and its equity securities as either available-for-sale or trading, and as such, they are carried at fair value. The Company's equity holdings substantially consist of non-redeemable preferred stock with characteristics of debt securities, purchased for income generation. These securities are interest rate sensitive, and typically include stated dividend payment rates and dates and call provisions at the option of the issuer. Changes in fair value of trading securities are reported within Net investment income on the Consolidated Statements of Operations. Changes in fair value related to available-for-sale securities are reported as a component of Other comprehensive income. Losses may be recognized within Net realized investment gains (losses) on the Consolidated Statements of Operations when a decline in value is determined by the Company to be other-than-temporary.
The cost of fixed maturity securities classified as available-for-sale is adjusted for amortization of premiums and accretion of discounts, which are included in Net investment income on the Consolidated Statements of Operations. The amortization of premium and accretion of discount for fixed maturity securities takes into consideration call and maturity dates that produce the lowest yield. In 2015, the Company changed its accounting principle as previously the amortization of premiums was to maturity. This change in estimate effected by a change in accounting principle was adopted in the fourth quarter of 2015 and decreased Net investment income and the amortized cost of fixed maturity securities by $39 million in the Consolidated Statement of Operations for the year-ended December 31, 2015 and the Consolidated Balance Sheet as of December 31, 2015. The $39 million decrease to Net investment income included a $22 million cumulative adjustment relating to prior periods. The total adjustment decreased Basic and Diluted earnings per share by $0.09 for the year ended December 31, 2015.
For asset-backed securities included in fixed maturity securities, the Company recognizes income using an effective yield based on anticipated prepayments and the estimated economic life of the securities. When estimates of

prepayments change, the effective yield is recalculated to reflect actual payments to date and anticipated future payments.payments predominantly using the retrospective method.
To the extent that unrealized gains on fixed incomematurity securities supporting structured settlements not funded by annuities were realized, or that unrealized gains on fixed maturity securities supporting long term care products and structured settlements not funded by annuities would result in a premium deficiency if those gains were realized, a related increase in Insurance reserves is recorded, net of tax, as a reduction of net unrealized gains through Other comprehensive income (Shadow Adjustments). Shadow Adjustments, net of tax, increased $397decreased $296 million and decreased $97increased $575 million for the years ended December 31, 20172021 and 2016,2020, respectively. As of December 31, 20172021 and 2016,2020, net unrealized gains on investments included in Accumulated other comprehensive income (AOCI) were correspondingly reduced by Shadow Adjustments of $1,411$2,477 million and $1,014 million.$2,773 million, respectively.
Equity securities are carried at fair value. The Company's non-redeemable preferred stock contain characteristics of debt securities, are priced similarly to bonds and are held primarily for income generation through periodic dividends. While recognition of gains and losses on these securities is not discretionary,
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management does not consider the changes in fair value of non-redeemable preferred stock to be reflective of our primary operations. As such, the changes in the fair value of these securities are recorded through Net investment gains (losses) on the Consolidated Statements of Operations. The Company owns certain common stock with the intention of holding the securities primarily for market appreciation and as such, the changes in the fair value of these securities are recorded through Net investment income.
The Company's carrying value of investments in limited partnerships is its share of the net asset value of each partnership, as determined by the general partner. Certain partnerships for which results are not available on a timely basis are reported on a lag, primarily three months or less. Changes in net asset values are accounted for under the equity method and recorded within Net investment income on the Consolidated Statements of Operations.
Mortgage loans are commercial in nature, are carried at unpaid principal balance, net of unamortized fees and any valuationan allowance for expected credit losses, and are recorded once funded. The allowance for expected credit losses is developed by assessing the credit quality of pools of mortgage loans in good standing using debt service coverage ratios (DSCR) and loan-to-value ratios (LTV). The DSCR compares a property’s net operating income to its debt service payments, including principal and interest. The LTV ratio compares the current unpaid principal balance of the loan to the estimated fair value of the underlying property collateralizing the loan. The pools developed to measure the credit loss allowance use increments of DSCR and LTV to draw distinctions between risk levels. The Company applies expected credit loss rates by pool to the outstanding receivable balances. Changes in the allowance for mortgage loans are presented as a component of Net investment gains (losses) on the Consolidated Statements of Operations. Prior to 2020, mortgage loans were evaluated on an individual loan basis considering the collection experience of each loan and other credit quality indicators such as DSCR and the credit-worthiness of the borrower or tenants of credit tenant loan properties. Mortgage loans were considered to be impaired loans and a loss incurred when it was probable that contractual principal and interest payments would not be collected and any impairment losses were recognized as a direct write-down of amortized cost. See the Credit Losses section of this note for additional information on the Company’s allowances for expected credit losses. Interest income from mortgage loans is recognized on an accrual basis using the effective yield method. Mortgage loans are considered to be impaired loans when it is probable that contractual principal and interest payments will not be collected. The Company evaluates loans for impairment on a specific loan basis and identifies loans for evaluation of impairment based on the collection experience of each loan and other credit quality indicators such as debt service coverage ratio and the creditworthiness of the borrower or tenants of credit tenant loan properties. Accrual of income is generally suspended for mortgage loans that are impaired and collection of principal and interest payments is unlikely. Mortgage loans are considered past due when full principal or interest payments have not been received according to contractual terms. As of December 31, 2017 and 2016, there were no loans past due or in non-accrual status, and no valuation allowance was recorded.
Other invested assets include overseas deposits and Federal Home Loan Bank of Chicago (FHLBC) stock. FHLBC stock is carried at fair value.deposits. Overseas deposits are valued using the net asset value per share (or equivalent) practical expedient. They are primarily short-term government securities, agency securities and corporate bonds held in trusts that are managed by Lloyd's of London. These funds are required of Lloyd's syndicates to protect policyholders in overseas markets and may be denominated in local currency.
Short term investments are carried at fair value, with the exception of cash accounts earning interest, which are carried at cost and approximate fair value. Changes in fair value are reported as a component of Other comprehensive income.
Purchases and sales of all securities are recorded on the trade date, except for private placement debt securities, including bank loan participations, which are recorded once funded. RealizedNet investment gains and losses are determined on the basis of the cost or amortized cost of the specific securities sold.
In the normal course of investing activities, the Company enters into relationships with variable interest entities (VIEs), as both an investor in limited partnerships and asset-backed securities issued by third-party VIEs. The Company is not the primary beneficiary of these VIEs, and therefore does not consolidate them. The Company determines whether it is the primary beneficiary of a VIE based on a qualitative assessment of the relative power and benefits of the Company and the other participants in the VIE. The Company’s maximum exposure to loss with respect to these investments is limited to the investment carrying values included in the Company’s Consolidated Balance Sheets and any unfunded commitments.
AAn available-for-sale security is impaired if the fair value of the security is less than its cost adjusted for accretion, amortization and previously recorded OTTI losses, otherwise defined as an unrealized loss.allowance for credit losses. When a security is impaired, the impairmentit is evaluated to determine whether itthe Company intends to sell the security before recovery of amortized cost or whether a credit loss exists. Losses on securities that the Company intends to sell are recognized as impairment losses within Net investment gains (losses) on the Consolidated Statements of Operations. If a credit loss exists, an allowance is temporary or other-than-temporary.established and the corresponding amount is recognized as an impairment loss within Net
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investment gains (losses) on the Consolidated Statements of Operations. The allowance for credit losses related to available-for-sale fixed maturity securities is the difference between the present value of cash flows expected to be collected and the amortized cost basis, limited by the amount that the fair value is less than the amortized cost basis. In subsequent periods, the allowance is reviewed, with any changes in the allowance presented as a component of Net investment gains (losses) on the Consolidated Statements of Operations. Changes in the difference between the amortized cost basis, net of the allowance, and the fair value, are recognized in Other comprehensive income.
Significant judgment is required in the determination of whether an OTTIimpairment loss has occurred for a security. The Company follows a consistent and systematic process for determining and recording an OTTIimpairment loss, including the evaluation of securities in an unrealized loss position and securities with an allowance for credit losses on at least a quarterly basis.

The Company’s assessment of whether an OTTIimpairment loss has occurred incorporates both quantitative and qualitative information. Fixed maturity securities that the Company intends to sell, or it more likely than not will be required to sell before recovery of amortized cost, are considered to be other-than-temporarily impaired and the entire difference between the amortized cost basis and fair value of the security is recognized as an OTTI loss in earnings. The remaining fixed maturity securities in an unrealized loss position are evaluated to determine if aA credit loss exists. The factors considered include (a) the financial condition and near-term and long-term prospects of the issuer, (b) whether the debtor is current on interest and principal payments, (c) credit ratings of the securities and (d) general market conditions and industry or sector specific outlook. The Company also considers results and analysis of cash flow modeling for asset-backed securities, and when appropriate, other fixed maturity securities. The focus of the analysis for asset-backed securities is on assessing the sufficiency and quality of underlying collateral and timing of cash flows based on scenario tests. Ifexists if the present value of the modeled expected cash flows equals or exceedsexpected to be collected is less than the amortized cost of a security, no credit loss is judged to exist and the asset-backed security is deemed to be temporarily impaired. If the present value of the expected cash flows is significantly less than amortized cost, the security is judged to be other-than-temporarily impaired for credit reasons and that shortfall, referred to as the credit component, is recognized as an OTTI loss in earnings. The difference between the adjusted amortized cost basis and fair value, referred to as the non-credit component, is recognized as OTTI in Other comprehensive income. In subsequent reporting periods, a change in intent to sell or further credit impairment on a security whose fair value has not deteriorated will cause the non-credit component originally recorded as OTTI in Other comprehensive income to be recognized as an OTTI loss in earnings. The Company performs the discounted cash flow analysis using stressed scenarios to determine future expectations regarding recoverability.basis. Significant assumptions enter into these cash flow projections including delinquency rates, probable risk of default, loss severity upon a default, over collateralization and interest coverage triggers and credit support from lower level tranches.
The Company applies the same impairment model as described above for the majority of its non-redeemable preferred stock securities on the basis that these securities possess characteristics similar to debt securities. Forconsiders all other equity securities, inavailable evidence when determining whether the security is other-than-temporarily impaired, the Company considersan investment requires a numbercredit loss write-down or allowance to be recorded. Examples of factors including, but not limited to: (a) the length of time and the extent to which the fair value has been less than amortized cost, (b)such evidence may include the financial condition and near termnear-term and long-term prospects of the issuer, (c)whether the intentissuer is current with interest and ability ofprincipal payments, credit ratings on the Company to retain its investment for a period ofsecurity or changes in ratings over time, sufficient to allow for an anticipated recovery in value and (d) general market conditions and industry, sector or sectorother specific outlook.factors and whether it is likely that the Company will recover its amortized cost through the collection of cash flows. See the Credit Losses section of this note for additional information on the Company’s allowances for expected credit losses.
Prior to 2020, the Company’s assessment of whether an impairment loss occurred also incorporated both quantitative and qualitative information.Fixed maturity securities in an unrealized loss position that the Company intended to sell, or it more likely than not would be required to sell before recovery of amortized cost, were considered to be impaired and the entire difference between the amortized cost basis and fair value of the security was recognized as an impairment loss in earnings as a direct write-down of amortized cost.The remaining fixed maturity securities in an unrealized loss position were evaluated to determine if a credit loss existed. If a credit loss was determined to exist, the credit loss was recognized in earnings as a direct write-down of amortized cost.
Credit Losses
The allowances for credit losses on fixed maturity securities, mortgage loans, reinsurance receivables and insurance receivables are valuation accounts that are reported as a reduction of a financial asset’s cost basis and are measured on a pool basis when similar risk characteristics exist. Management estimates the allowance using relevant available information from both internal and external sources. Historical credit loss experience provides the basis for the estimation of expected credit losses and adjustments may be made to reflect current conditions and reasonable and supportable forecasts. Adjustments to historical loss information are made for any additional factors that come to the Company’s attention. This could include significant shifts in counterparty financial strength ratings, aging of past due receivables, amounts sent to collection agencies, or other underlying portfolio changes. Amounts are considered past due when payments have not been received according to contractual terms. The Company also considers current and forecast economic conditions, using a variety of economic metrics and forecast indices. The sensitivity of expected credit losses relative to changes to these forecast economic conditions can vary by financial asset class. The Company considers a reasonable and supportable forecast period to be up to 24 months from the balance sheet date. After the forecast period, the Company reverts to historical credit experience. The Company uses collateral arrangements such as letters of credit and amounts held in beneficiary trusts to mitigate credit risk, which are considered in the estimate of net amount expected to be collected. Amounts are written off against the allowance when determined to be uncollectible.
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The Company has made a policy election to present accrued interest balances separately from the amortized cost basis of assets and has elected the practical expedient to exclude the accrued interest from the tabular disclosures for mortgage loans and available-for-sale securities. The Company has elected not to estimate an allowance for credit losses on accrued interest receivable. The accrual of interest income is discontinued and the asset is placed on nonaccrual status within 90 days of the interest becoming delinquent. Interest accrued but not received for assets on nonaccrual status is reversed through investment income. Interest received for assets that are on nonaccrual status is recognized as payment is received. The asset is returned to accrual status when the principal and interest amounts contractually due are brought current and future payments are expected. Interest receivable is presented as a component of accrued investment income on the Consolidated Balance Sheet.
Prior to 2020, the allowance for uncollectible reinsurance and insurance receivables was measured using an incurred loss methodology.
Deferred Non-Insurance Warranty Revenue and Acquisition Expense
Non-insurance warranty revenue is primarily generated from separately-priced service contracts that provide mechanical breakdown and other coverages to vehicle or consumer goods owners. The warranty contracts generally provide coverage from 1 month to 10 years. For warranty products where the Company acts as the principal in the transaction, Non-insurance warranty revenue is reported on a gross basis, with amounts paid by customers reported as Non-insurance warranty revenue and commissions paid to agents reported as Non-insurance warranty expense.
Non-insurance warranty revenue is reported net of any premiums related to contractual liability coverage issued by the Company's insurance operations. Additionally, the Company provides warranty administration services for dealer and manufacturer obligor warranty products, which include limited warranties and guaranteed asset protection waivers. The Company recognizes Non-insurance warranty revenue over the service period in proportion to the actuarially determined expected claims emergence pattern. Customers predominantly pay in full at the inception of the warranty contract. The liability for deferred revenue represents the unearned portion of revenue in advance of the Company's performance. The deferred revenue balance includes amounts which are refundable on a pro rata basis upon cancellation.
Dealers, retailers and agents earn commission for assisting the Company in obtaining non-insurance warranty contracts. Additionally, the Company utilizes third-parties to perform warranty administrator services for its consumer goods warranties. These costs, which are deferred and recorded as Deferred non-insurance warranty acquisition expense, are amortized to Non-insurance warranty expense consistent with how the related revenue is recognized. The Company evaluates deferred costs for recoverability including consideration of anticipated investment income. Adjustments to deferred costs, if necessary, are recorded in the current period results of operations.
Income Taxes
The Company and its eligible subsidiaries (CNA Tax Group) are included in the consolidated federal income tax return of Loews and its eligible subsidiaries. The Company accounts for income taxes under the asset and liability method. Under the asset and liability method, deferred income taxes are recognized for temporary differences between the financial statement and tax return bases of assets and liabilities, based on enacted tax rates and other provisions of the tax law. The effect of a change in tax laws or rates on deferred tax assets and liabilities is recognized in income in the period in which such change is enacted. Future tax benefits are recognized to the extent that realization of such benefits is more likely than not, and a valuation allowance is established for any portion of a deferred tax asset that management believes will not be realized. The Company releases tax effects from AOCI utilizing the security-by-security approach for Net unrealized gains (losses) on investments with an allowance for credit losses and Net unrealized gains (losses) on other investments. For Pension and postretirement benefits, tax effects from AOCI are released at enacted tax rates based on the pre-tax adjustments to pension liabilities or assets recognized within Other comprehensive income.


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Pension and Postretirement Benefits
The Company recognizes the overfunded or underfunded status of its defined benefit plans in Other assets or Other liabilities on the Consolidated Balance Sheets. Changes in funded status related to prior service costs and credits, and actuarial gains and losses arising from differences between actual experience and actuarial assumptions, are recognized in the year in which the changes occur through Other comprehensive income. Unrecognized actuarial gains and losses in excess of 10% of the greater of the beginning of the year projected benefit obligation or fair value of plan assets (the corridor) are amortized as a component of net periodic pension cost (benefit) over the average remaining life expectancy of the plan participants. Annual service cost, interest cost, expected return on plan assets, amortization of prior service costs and credits and amortization of actuarial gains and losses are recognized inon the Consolidated Statements of Operations.
The vested benefit obligation for the CNA Retirement Plan is determined based on eligible compensation and accrued service for previously entitled employees. Effective June 30, 2015, future benefit accruals under the CNA Retirement Plan were eliminated and the benefit obligations were frozen.

Stock-Based Compensation
The Company records compensation expense using the fair value method for all awards it grants, modifies or cancels primarily on a straight-line basis over the requisite service period, generally three to four years.
Foreign Currency
Foreign currency translation gains and losses are reflected in Stockholders' equity as a component of AOCI. The Company's foreign subsidiaries' balance sheet accounts are translated at the exchange rates in effect at each reporting date and income statement accounts are either translated at the exchange raterates on the date of the transaction or at the average exchange rates. Foreign currency translation gains and losses are reflected in Stockholders' equity as a component of AOCI. Foreign currency transaction gains (losses) of $27less than $(1) million, $(9)$13 million and $(11)$1 million were included in determining Net income (loss) for the years ended December 31, 2017, 20162021, 2020 and 2015.2019, respectively.
Leases
A lease provides the lessee the right to control the use of an identified asset for a period of time in exchange for consideration. Operating lease right-of-use (ROU) assets and lease liabilities are included in Other assets and Other liabilities on the Company's Consolidated Balance Sheets.
ROU assets represent the Company's right to use an underlying asset for the lease term and operating lease liabilities represent the Company's obligation to make lease payments arising from the lease. The Company determines if an arrangement is a lease at inception. Operating lease ROU assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. Most operating leases contain renewal options that provide for rent increases based on prevailing market conditions. Certain leases contain options to terminate before maturity. The lease term used to calculate the ROU asset includes any renewal options or lease termination options that the Company expects to exercise. The discount rate used to determine the commencement date present value of lease payments is typically the Company’s secured borrowing rate, as most of the Company’s leases do not provide an implicit rate. ROU assets include any lease payments required to be made prior to commencement and exclude lease incentives. The Company has elected to account for its lease and non-lease components as a single lease component. The Company’s non-lease components consist of variable lease costs not based on an index or rate and are excluded from the measurement of ROU assets and lease liabilities. Variable lease costs not based on an index or rate are treated as period costs, and represent charges for services provided by the landlord and the Company's reimbursement to the landlord for costs such as real estate taxes and insurance.
The Company occupies office facilities under lease agreements that expire at various dates. The Company's lease agreements do not contain significant residual value guarantees, restrictions or covenants. The Company does not have any significant finance leases.

68

Property and Equipment
Property and equipment are carried at cost less accumulated depreciation. Depreciation is based on the estimated useful lives of the various classes of property and equipment and is determined principally on the straight-line method. Furniture and fixtures are depreciated over seven years. Office equipment is depreciated over five years. The estimated lives for data processing equipment and software generally range from three to five years, but can be as long as ten years. Leasehold improvements are depreciated over the corresponding lease terms not to exceed the underlying asset life. The Company's previously owned building and related capital improvements were depreciated over periods not to exceed fifty years.
Goodwill
Goodwill represents the excess of purchase price over the fair value of the net assets of acquired entities and businesses. Goodwill in the International segment may change from period to period as a result of foreign currency translation.
Goodwill is tested for impairment annually or when certain triggering events require such tests. As a result of reviews completed for the year ended December 31, 2017,2021, the Company determined that the estimated fair value of the reporting units were in excess of their carrying value including Goodwill. Changes in future periods in assumptions about the level of economic capital, business growth, earnings projections or the weighted average cost of capital could result in a goodwill impairment.
Other Intangible Assets
Other intangible assets are reported within Other assets. assets on the Consolidated Balance Sheets.Finite-lived intangible assets are amortized over their estimated useful lives. Indefinite-lived other intangible assets are tested for impairment annually or when certain triggering events require such tests.
Earnings (Loss) Per Share Data
Earnings (loss) per share is based on weighted average number of outstanding common shares. Basic earnings (loss) per share excludes the impact of dilutive securities and is computed by dividing Net income (loss) by the weighted average number of common shares outstanding for the period. Diluted earnings (loss) per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock.
For the years ended December 31, 2017, 20162021, 2020 and 2015,2019, approximately 988 thousand, 6781 million, 770 thousand and 534960 thousand potential shares attributable to exercises or conversions into common stock under stock-based employee compensation plans were included in the calculation of diluted earnings per share. For those same periods, less than 1 thousand, 1028 thousand and 1061 thousand potential shares attributable to exercises or conversions into common stock under stock-based employee compensation plans were not included in the calculation of diluted earnings per share, because the effect would have been antidilutive.

Supplementary Cash Flow Information
Cash payments made for interest were $155$110 million, $157$124 million and $152$136 million for the years ended December 31, 2017, 20162021, 2020 and 2015.2019. Cash payments made for income taxes were $152$278 million, $170$108 million and $310$255 million for the years ended December 31, 2017, 20162021, 2020 and 2015.2019.
Recently Adopted Accounting Standards Updates (ASU)
69
In March 2016, the Financial Accounting Standards Board (FASB) issued ASU No. 2016-09, Compensation-Stock Compensation (Topic 718): Improvementsto Employee Share-Based Payment Accounting. The updated accounting guidance simplifies the accounting for share-based payment award transactions, including income tax consequences, classification

Accounting Standards Pending Adoption
In May 2014, the FASB issued ASU No. 2014-09, Revenue Recognition (Topic 606): Revenue from Contracts with Customers. The standard excludes from its scope the accounting for insurance contracts, financial instruments, and certain other agreements that are governed under other GAAP guidance. The updated guidance requires an entity to recognize revenue as performance obligations are met, in an amount that reflects the consideration the entity is entitled to receive for the transfer of the promised goods or services. The standard is effective for interim and annual reporting periods beginning after December 15, 2017 and may be applied retrospectively or through a cumulative effect adjustment to retained earnings at the date of adoption. The Company plans to adopt the new revenue guidance effective January 1, 2018 using the modified retrospective approach. The Company expects that revenue on warranty products and services will be recognized more slowly under the new guidance than under the current revenue recognition pattern. At adoption, the Company anticipates a cumulative effect adjustment that will decrease Retained earnings by approximately $65 million. Additionally, Other revenues and Other operating expenses on the Company's Consolidated Statements of Operations will increase for those contracts for which the Company has concluded it is a principal, as the retail sellers' mark-up will now be reflected as revenue and commission expense. The estimated annual gross-up of Other revenues and Other operating expenses will be approximately $500 million. The related gross-up effect on the Consolidated Balance Sheet at adoption will be an increase of Other assets and Other liabilities by approximately $1.7 billion. Based on the Company’s assessment, the impact of adoption of the new guidance will not be material to the Company’s results of operations or financial position.
In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments-Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities.  The updated accounting guidance requires changes to the reporting model for financial instruments. The guidance is effective for interim and annual periods beginning after December 15, 2017.  The Company expects the primary change to be the requirement for equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. The Company will recognize a cumulative effect adjustment to Retained earnings and AOCI for the net of tax amount of unrealized investment gains and losses related to available-for-sale equity securities at the date of adoption. At adoption, the Company estimates this new guidance will result in an after-tax increase to Retained earnings and a decrease to AOCI of $28 million. Subsequent to adoption, changes in the fair value of equity securities will be reported as Net realized investment gains (losses) in the Company's Consolidated Statement of Operations, which will introduce additional volatility in the Company's results of operations.
In March 2017, the FASB issued ASU No. 2017-07, Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. The updated accounting guidance requires changes to the presentation of the components of net periodic benefit cost on the income statement by requiring service cost to be presented with other employee compensation costs and other

components of net periodic pension cost to be presented outside of any subtotal of operating income. The ASU also stipulates that only the service cost component of net benefit cost is eligible for capitalization. The guidance is effective for interim and annual periods beginning after December 15, 2017. The guidance is to be applied on a prospective basis for capitalization of service costs and on a retrospective basis for the presentation of the service cost and other components of net periodic benefit costs in the Company's Consolidated Statements of Operations or in its disclosures. The Company will adopt the updated guidance effective January 1, 2018. The Company plans to expand the related footnote disclosure to show the amount of service cost and non-service cost components of net periodic benefit cost and the line items in the Consolidated Statements of Operations in which such amounts are reported. The adoption impact from the change is not expected to be material to the Company’s results of operations or financial position.
In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842): Accounting for Leases. The updated accounting guidance requires lessees to recognize on the balance sheet the assets and liabilities for the rights and obligations created by all leases, including those historically accounted for as operating leases. The guidance is effective for interim and annual periods beginning after December 15, 2018. The Company is currently evaluating the effect the updated guidance will have on the Company's financial statements. It is expected that assets and liabilities will increase based on the present value of remaining lease payments for leases in place at the adoption date; however, this is not expected to be material to the Company's results of operations or financial position.
In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurementof Credit Losses on Financial Instruments. The updated accounting guidance requires changes to the recognition of credit losses on financial instruments not accounted for at fair value through net income. The guidance is effective for interim and annual periods beginning after December 15, 2019. The Company is currently evaluating the effect the guidance will have on the Company's financial statements, but expects the primary changes to be the use of the expected credit loss model for its mortgage loan portfolio and reinsurance receivables and the presentation of credit losses within the available-for-sale fixed maturities portfolio through an allowance method rather than as a direct write-down. The expected credit loss model will require a financial asset to be presented at the net amount expected to be collected. The allowance method for available-for-sale debt securities will allow the Company to record reversals of credit losses if the estimate of credit losses declines.



Note B. Investments
The significant components of Net investment income are presented in the following table.
Years ended December 31
(In millions)202120202019
Fixed maturity securities$1,707 $1,728 $1,817 
Equity securities83 65 85 
Limited partnership investments362 121 180 
Mortgage loans61 57 51 
Short term investments34 
Trading portfolio18 
Other— 
Gross investment income2,223 1,999 2,181 
Investment expense(64)(64)(63)
Net investment income$2,159 $1,935 $2,118 
Years ended December 31     
(In millions)2017 2016 2015
Fixed maturity securities$1,812
 $1,819
 $1,751
Equity securities12
 10
 12
Limited partnership investments207
 155
 92
Mortgage loans34
 41
 33
Short term investments15
 8
 6
Trading portfolio12
 10
 8
Other1
 4
 1
Gross investment income2,093
 2,047
 1,903
Investment expense(59) (59) (63)
Net investment income$2,034
 $1,988
 $1,840
For the years ended December 31, 2021 and 2020, $28 million and $34 million of Net investment income was recognized due to the change in fair value of common stock still held as of December 31, 2021 and 2020.
As of December 31, 20172021 and 2020, the Company held $2less than $1 million of non-income producing fixed maturity securities. As of December 31, 2021 and 2020, the Company held $7 million and $0 of non-income producing mortgage loans. As of December 31, 2016, the Company held no non-income producing fixed maturity securities. As of December 31, 20172021 and 2016, 2020, no investments in a single issuer exceeded 10% of stockholders' equity, other than investments in securities issued by the U.S. Treasury and obligations of government-sponsored enterprises.
Net realized investment gains (losses) are presented in the following table.
Years ended December 31
(In millions)202120202019
Net investment gains (losses):
Fixed maturity securities:
Gross gains$186 $220 $125 
Gross losses(90)(220)(131)
Net investment gains (losses) on fixed maturity securities96 — (6)
Equity securities(3)66 
Derivatives(10)(11)
Mortgage loans10 (21)— 
Short term investments and other(20)(20)
Net investment gains (losses)$120 $(54)$29 
Years ended December 31     
(In millions)2017 2016 2015
Net realized investment gains (losses):     
Fixed maturity securities:     
Gross realized gains$186
 $204
 $131
Gross realized losses(64) (138) (197)
Net realized investment gains (losses) on fixed maturity securities122
 66
 (66)
Equity securities:   
  
Gross realized gains1
 5
 2
Gross realized losses(1) (10) (25)
Net realized investment gains (losses) on equity securities
 (5) (23)
Derivatives(4) (2) 10
Short term investments and other(25) (9) 12
Net realized investment gains (losses)$93
 $50
 $(67)
For the years ended December 31, 2021 and 2020, $2 million of gains and $3 million of losses were recognized in Net realized investment gains (losses) due to the change in fair value of non-redeemable preferred stock still held as of December 31, 2021 and 2020, respectively. Short term investments and other included a $20 million loss for the year ended December 31, 2017 included a $42 million loss2020 related to the redemption of the Company's $350$400 million senior notes due November 2019.August 2021 and a $21 million loss for the year ended December 31, 2019 related to the redemption of the Company's $500 million senior notes due August 2020.




Net change in unrealized gains


70


The following tables present the activity related to the allowance on investmentsavailable-for-sale securities with credit impairments and purchased credit-deteriorated (PCD) assets. Accrued interest receivable on available-for-sale fixed maturity securities totaled $369 million and $371 million as of December 31, 2021 and 2020 and is presentedexcluded from the estimate of expected credit losses and the amortized cost basis in the following table.table included within this Note.
(In millions)Corporate and other bondsAsset-backedTotal
Allowance for credit losses:
Balance as of January 1, 2021$23 $17 $40 
Additions to the allowance for credit losses:
Securities for which credit losses were not previously recorded14 — 14 
Available-for-sale securities accounted for as PCD assets11 
Reductions to the allowance for credit losses:
Securities sold during the period (realized)17 24 
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis— — — 
Write-offs charged against the allowance16 — 16 
Recoveries of amounts previously written off— — — 
Additional increases or (decreases) to the allowance for credit losses on securities that had an allowance recorded in a previous period(8)(7)
Balance as of December 31, 2021$11 $$18 
(In millions)Corporate and other bondsAsset-backedTotal
Allowance for credit losses:
Balance as of January 1, 2020$— $— $— 
Additions to the allowance for credit losses:
Impact of adopting ASC 326— 
Securities for which credit losses were not previously recorded67 12 79 
Available-for-sale securities accounted for as PCD assets— 
Reductions to the allowance for credit losses:
Securities sold during the period (realized)22 — 22 
Intent to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis— 
Write-offs charged against the allowance— — — 
Recoveries of amounts previously written off— — — 
Additional increases or (decreases) to the allowance for credit losses on securities that had an allowance recorded in a previous period(32)(27)
Balance as of December 31, 2020$23 $17 $40 







71

Years ended December 31     
(In millions)2017 2016 2015
Net change in unrealized gains on investments:     
Fixed maturity securities$728
 $225
 $(1,114)
Equity securities32
 (2) (6)
Other(2) 1
 1
Total net change in unrealized gains on investments$758
 $224
 $(1,119)
The components of OTTIavailable-for-sale impairment losses recognized in earnings by asset type are presented in the following table. The table includes losses on securities with an intention to sell and changes in the allowance for credit losses on securities since acquisition date.
Years ended December 31
(In millions)202120202019
Fixed maturity securities available-for-sale:
Corporate and other bonds$11 $87 $33 
Asset-backed20 24 11 
Impairment (gains) losses recognized in earnings$31 $111 $44 
For the years ended December 31, 2021 and 2020, the Company also recognized $10 million of gains and $21 million of losses related to mortgage loans primarily due to changes in expected credit losses.
The net change in unrealized gains on investments, which consists solely of the change in unrealized gains on fixed maturity securities, was $(1,272) million, $1,637 million and $2,620 million for the years ended December 31, 2021, 2020 and 2019.
72

Years ended December 31     
(In millions)2017 2016 2015
Fixed maturity securities available-for-sale:
    
Corporate and other bonds$12
 $59
 $104
States, municipalities and political subdivisions
 
 18
Asset-backed:   
  
Residential mortgage-backed1
 10
 8
Other asset-backed
 3
 1
Total asset-backed1
 13
 9
Total fixed maturity securities available-for-sale13
 72
 131
Equity securities available-for-sale1
 9
 25
OTTI losses recognized in earnings$14
 $81
 $156

The following tables present a summary of fixed maturity and equity securities.
December 31, 2021Cost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Allowance for Credit LossesEstimated
Fair
Value
(In millions)
Fixed maturity securities available-for-sale:
Corporate and other bonds$21,444 $2,755 $56 $11 $24,132 
States, municipalities and political subdivisions10,358 1,599 14 — 11,943 
Asset-backed:
Residential mortgage-backed2,893 71 — 2,956 
Commercial mortgage-backed1,987 63 19 — 2,031 
Other asset-backed2,561 54 10 2,598 
Total asset-backed7,441 188 37 7,585 
U.S. Treasury and obligations of government-sponsored enterprises132 — 130 
Foreign government570 15 — 583 
Total fixed maturity securities available-for-sale39,945 4,558 112 18 44,373 
Total fixed maturity securities trading— — — 
Total fixed maturity securities$39,952 $4,558 $112 $18 $44,380 
December 31, 2017
Cost or
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair
Value
 
Unrealized
OTTI
Losses (Gains)
December 31, 2020December 31, 2020Cost or
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Allowance for Credit LossesEstimated
Fair
Value
(In millions)
Cost or
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair
Value
 
Unrealized
OTTI
Losses (Gains)
(In millions)
Fixed maturity securities available-for-sale: Fixed maturity securities available-for-sale:
Corporate and other bonds$17,210
 $1,625
 $28
 $18,807
 $
Corporate and other bonds$20,792 $3,578 $22 $23 $24,325 
States, municipalities and political subdivisions12,478
 1,551
 2
 14,027
 (11)States, municipalities and political subdivisions9,729 1,863 — — 11,592 
Asset-backed:         Asset-backed:
Residential mortgage-backed5,043
 109
 32
 5,120
 (27)Residential mortgage-backed3,442 146 — 3,587 
Commercial mortgage-backed1,840
 46
 14
 1,872
 
Commercial mortgage-backed1,933 93 42 17 1,967 
Other asset-backed1,083
 16
 5
 1,094
 
Other asset-backed2,179 81 — 2,251 
Total asset-backed7,966
 171
 51
 8,086
 (27)Total asset-backed7,554 320 52 17 7,805 
U.S. Treasury and obligations of government-sponsored enterprises111
 2
 4
 109
 
U.S. Treasury and obligations of government-sponsored enterprises339 — 338 
Foreign government437
 9
 2
 444
 
Foreign government512 32 — — 544 
Redeemable preferred stock10
 1
 
 11
 
Total fixed maturity securities available-for-sale38,212
 3,359
 87
 41,484
 $(38)Total fixed maturity securities available-for-sale38,926 5,795 77 40 44,604 
Total fixed maturity securities trading3
 

 

 3
  Total fixed maturity securities trading27 — — — 27 
Equity securities available-for-sale:         
Common stock21
 7
 1
 27
  
Preferred stock638
 31
 1
 668
  
Total equity securities available-for-sale659
 38
 2
 695
  
Total$38,874
 $3,397
 $89
 $42,182
  
Total fixed maturity securitiesTotal fixed maturity securities$38,953 $5,795 $77 $40 $44,631 


73

December 31, 2016
Cost or
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair
Value
 
Unrealized
OTTI
Losses (Gains)
(In millions)    
Fixed maturity securities available-for-sale:         
Corporate and other bonds$17,711
 $1,323
 $76
 $18,958
 $(1)
States, municipalities and political subdivisions12,060
 1,213
 33
 13,240
 (16)
Asset-backed:         
Residential mortgage-backed5,004
 120
 51
 5,073
 (28)
Commercial mortgage-backed2,016
 48
 24
 2,040
 
Other asset-backed1,022
 8
 5
 1,025
 
Total asset-backed8,042
 176
 80
 8,138
 (28)
U.S. Treasury and obligations of government-sponsored enterprises83
 10
 
 93
 
Foreign government435
 13
 3
 445
 
Redeemable preferred stock18
 1
 
 19
 
Total fixed maturity securities available-for-sale38,349
 2,736
 192
 40,893
 $(45)
Total fixed maturity securities trading12
     12
  
Equity securities available-for-sale:         
Common stock13
 6
 
 19
  
Preferred stock93
 2
 4
 91
  
Total equity securities available-for-sale106
 8
 4
 110
  
Total$38,467
 $2,744
 $196
 $41,015
  

The following tables present the estimated fair value and gross unrealized losses of fixed maturity and equity securities in a gross unrealized loss position for which an allowance for credit loss has not been recorded, by the length of time in which the securities have continuously been in that position.
Less than 12 Months12 Months or LongerTotal
December 31, 2021Estimated
Fair Value
Gross
Unrealized
Losses
Estimated
Fair Value
Gross
Unrealized
Losses
Estimated
Fair Value
Gross
Unrealized
Losses
(In millions)
Fixed maturity securities available-for-sale:
Corporate and other bonds$2,389 $48 $136 $$2,525 $56 
States, municipalities and political subdivisions730 14 — — 730 14 
Asset-backed:
Residential mortgage-backed1,043 — — 1,043 
Commercial mortgage-backed527 167 12 694 19 
Other asset-backed840 10 62 — 902 10 
Total asset-backed2,410 25 229 12 2,639 37 
U.S. Treasury and obligations of government-sponsored enterprises69 — 74 
Foreign government97 — — 97 
Total$5,695 $92 $370 $20 $6,065 $112 
 Less than 12 Months 12 Months or Longer Total
December 31, 2017
Estimated
Fair Value
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 
Gross
Unrealized
Losses
(In millions)     
Fixed maturity securities available-for-sale:           
Corporate and other bonds$1,354
 $21
 $168
 $7
 $1,522
 $28
States, municipalities and political subdivisions72
 1
 85
 1
 157
 2
Asset-backed:           
Residential mortgage-backed1,228
 5
 947
 27
 2,175
 32
Commercial mortgage-backed403
 4
 212
 10
 615
 14
Other asset-backed248
 3
 18
 2
 266
 5
Total asset-backed1,879
 12
 1,177
 39
 3,056
 51
U.S. Treasury and obligations of government-sponsored enterprises49
 2
 21
 2
 70
 4
Foreign government166
 2
 4
 
 170
 2
Total fixed maturity securities available-for-sale3,520
 38
 1,455
 49
 4,975
 87
Equity securities available-for-sale:           
Common stock7
 1
 
 
 7
 1
Preferred stock93
 1
 
 
 93
 1
Total equity securities available-for-sale100
 2
 
 
 100
 2
Total$3,620

$40

$1,455

$49

$5,075

$89

Less than 12 Months12 Months or LongerTotal
Less than 12 Months 12 Months or Longer Total
December 31, 2016
Estimated
Fair Value
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 
Gross
Unrealized
Losses
December 31, 2020December 31, 2020Estimated
Fair Value
Gross
Unrealized
Losses
Estimated
Fair Value
Gross
Unrealized
Losses
Estimated
Fair Value
Gross
Unrealized
Losses
(In millions)
Estimated
Fair Value
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 
Gross
Unrealized
Losses
(In millions)
Fixed maturity securities available-for-sale: Fixed maturity securities available-for-sale:
Corporate and other bonds$2,615
 $61
 $254
 $15
 $2,869
 $76
Corporate and other bonds$609 $21 $12 $$621 $22 
States, municipalities and political subdivisions959
 32
 23
 1
 982
 33
States, municipalities and political subdivisions33 — — — 33 — 
Asset-backed:           Asset-backed:
Residential mortgage-backed2,136
 44
 201
 7
 2,337
 51
Residential mortgage-backed71 11 — 82 
Commercial mortgage-backed756
 22
 69
 2
 825
 24
Commercial mortgage-backed533 40 28 561 42 
Other asset-backed398
 5
 24
 
 422
 5
Other asset-backed344 13 — 357 
Total asset-backed3,290
 71
 294
 9
 3,584
 80
Total asset-backed948 50 52 1,000 52 
U.S. Treasury and obligations of government-sponsored enterprises5
 
 
 
 5
 
U.S. Treasury and obligations of government-sponsored enterprises63 — — 63 
Foreign government108
 3
 
 
 108
 3
Foreign government13 — — — 13 — 
Total fixed maturity securities available-for-sale6,977
 167
 571
 25
 7,548
 192
Equity securities available-for-sale -- Preferred stock12
 
 13
 4
 25
 4
Total$6,989
 $167
 $584
 $29
 $7,573
 $196
Total$1,666 $74 $64 $$1,730 $77 
Based on current facts and circumstances, the Company believes the unrealized losses presented in the December 31, 20172021 securities in a gross unrealized loss position table above are not indicative of the ultimate collectibility of the current amortized cost of the securities, but rather are attributable to changes in interest rates, credit spreads and other factors. The Company has no current intent to sell securities with unrealized losses, nor is it more likely than not that it will be required to sell prior to recovery of amortized cost; accordingly, the Company has determined that there are no additional OTTIimpairment losses to be recorded as of December 31, 2017.2021.
The following table presents the activity related to the pretax credit loss component reflected in Retained earnings on fixed maturity securities still held as of December 31, 2017, 2016 and 2015 for which a portion of an OTTI loss was recognized in Other comprehensive income (loss).
74

Years ended December 31     
(In millions)2017 2016 2015
Beginning balance of credit losses on fixed maturity securities$36
 $53
 $62
Reductions for securities sold during the period(9) (16) (9)
Reductions for securities the Company intends to sell or more likely than not will be required to sell
 (1) 
Ending balance of credit losses on fixed maturity securities$27
 $36
 $53
Contractual Maturity
The following table presents available-for-sale fixed maturity securities by contractual maturity.
December 312017 2016December 3120212020
(In millions)
Cost or
Amortized
Cost
 
Estimated
Fair
Value
 
Cost or
Amortized
Cost
 
Estimated
Fair
Value
(In millions)Cost or
Amortized
Cost
Estimated
Fair
Value
Cost or
Amortized
Cost
Estimated
Fair
Value
Due in one year or less$1,135
 $1,157
 $1,779
 $1,828
Due in one year or less$1,603 $1,624 $1,456 $1,458 
Due after one year through five years8,165
 8,501
 7,566
 7,955
Due after one year through five years10,637 11,229 12,304 13,098 
Due after five years through ten years16,060
 16,718
 15,892
 16,332
Due after five years through ten years13,294 14,338 12,319 13,878 
Due after ten years12,852
 15,108
 13,112
 14,778
Due after ten years14,411 17,182 12,847 16,170 
Total$38,212
 $41,484
 $38,349
 $40,893
Total$39,945 $44,373 $38,926 $44,604 
Actual maturities may differ from contractual maturities because certain securities may be called or prepaid. Securities not due at a single date are allocated based on weighted average life.
Limited Partnerships
The carrying value of limited partnerships as of December 31, 20172021 and 20162020 was $2,369$1,859 million and $2,371$1,619 million, which includes net undistributed earnings of $539$266 million and $523$235 million. Limited partnerships comprising 61%32% of the total carrying value are reported on a current basis through December 31, 20172021 with no reporting lag, 18%6% are reported on a one month lag and the remainder are reported on more than a one month lag. The number of limited partnerships held and the strategies employed provide diversification to the limited partnership portfolio and the overall invested asset portfolio.
Limited partnerships comprising 71%68% and 68%49% of the carrying value as of December 31, 20172021 and 2016 employ hedge fund strategies.2020 were invested in private debt and equity. Limited partnerships comprising 25%32% and 27%51% of the carrying value as of December 31, 20172021 and 2016 were invested in private2020 employ hedge fund strategies. Private debt and equity funds cover a broad range of investment strategies including buyout, co-investment, private credit, growth capital, distressed investing and the remainder were primarily invested in real estate strategies.estate. Hedge fund strategies include both long and short positions in fixed income, equity and derivative instruments. These hedge fund strategies may seek to generate gains from mispriced or undervalued securities, price differentials between securities, distressed investments, sector rotation or various arbitrage disciplines. Within hedge fund strategies, approximately 62% were equity related, 19% pursued a multi-strategy approach, 17% were focused on distressed investments and 2% were fixed income related as of December 31, 2017.

The ten largest limited partnership positions held totaled $1,136$665 million and $1,168$775 million as of December 31, 20172021 and 2016.2020. Based on the most recent information available regarding the Company’s percentage ownership of the individual limited partnerships, the carrying value reflected on the Consolidated Balance Sheets represents approximately 3%1% and 4%2% of the aggregate partnership equity as of December 31, 20172021 and 2016,2020, and the related income reflected on the Consolidated Statements of Operations represents approximately 3%2%, 4%2% and 3%2% of the changes in aggregate partnership equity for the years ended December 31, 2017, 20162021, 2020 and 2015.2019.
While the Company generally does not invest in highly leveraged partnerships, thereThere are risks inherent in limited partnership investments which may result in losses due to short-selling, derivatives or other speculative investment practices.The use of leverage increases volatility generated by the underlying investment strategies.

The Company’s private debt, private equity and other non-hedge fund limited partnership investments generally do not permit voluntary withdrawals. The Company’s hedge fund limited partnership investments contain withdrawal provisions that generally limit liquidity for a period of thirty days up to one year and in some cases do not permit withdrawals until the termination of the partnership.or longer. Typically, hedge fund withdrawals require advance written notice of up to 90 days.

75

Derivative Financial Instruments
The Company may use derivatives in the normal course of business, primarily in an attempt to reduce its exposure to market risk (principally interest rate risk, credit risk, equity price risk and foreign currency risk) stemming from various assets and liabilities. The Company's principal objective under such strategies is to achieve the desired reduction in economic risk, even if the position does not receive hedge accounting treatment.
The Company may enter into interest rate swaps, futures and forward commitments to purchase securities to manage interest rate risk. The Company may use foreign currency forward contracts to manage foreign currency risk.
Credit exposure associated with non-performance by the counterparties to derivative instruments is generally limited to the uncollateralized fair value of the asset related to the instruments recognized on the Consolidated Balance Sheets. The Company generally requires that all over-the-counter derivative contracts be governed by an International Swaps and Derivatives Association Master Agreement, and exchanges collateral under the terms of these agreements with its derivative investment counterparties depending on the amount of the exposure and the credit rating of the counterparty. Gross estimated fair values of derivative positions are presented in Other invested assets and Other liabilities on the Consolidated Balance Sheet.Sheets. The Company does not offset derivative positions against the fair value of collateral provided or positions subject to netting arrangements. There would be no significant difference in the balance included in such accounts if the estimated fair values were presented net for the periods endedas of December 31, 20172021 and 2016.2020.
There was no cash collateral provided by the Company as of December 31, 2017 or 2016. There was no cash collateral received from counterparties held as of December 31, 20172021 or 2016.2020.
The Company holds an embedded derivative on a funds withheld liability with a notional value of $167$270 million and $174$190 million and a fair value of $(12) million and $(19) million as of December 31, 20172021 and 2016 and a fair value of $(3) million and $3 million as of December 31, 2017 and 2016.2020. The embedded derivative on the funds withheld liability is accounted for separately and reported with the funds withheld liability in Other liabilities on the Consolidated Balance Sheets.


Investment Commitments
As part of December 31, 2017,its overall investment strategy, the Company had committed approximately $384 million toinvests in various assets which require future purchase, sale or funding commitments. These investments are recorded once funded, and the related commitments may include future capital calls from various third-party limited partnership investments in exchange for an ownership interest in thepartnerships, signed and accepted mortgage loan applications, and obligations related partnerships.
to private placement securities. As of December 31, 2017, the Company had mortgage loan commitments of $46 million representing signed loan applications received and accepted.
The Company invests in various privately placed debt securities, including bank loans, as part of its overall investment strategy and has committed to additional future purchases, sales and funding. Purchases and sales of privately placed debt securities are recorded once funded. As of December 31, 2017,2021, the Company had commitments to purchase or fund additional amounts of $165approximately $1,230 million and sell $108approximately $90 million under the terms of such securities.these investments.
Investments on Deposit
Securities with carrying values of approximately $2.6 billion and $2.3$3.0 billion were deposited by the Company’s insurance subsidiaries under requirements of regulatory authorities and others as of December 31, 20172021 and 2016.2020.
Cash and securities with carrying values of approximately $471 million$1.2 billion and $514 million$1.1 billion were deposited with financial institutions in trust accounts or as collateral for letters of credit to secure obligations with various third parties as of December 31, 20172021 and 2016. In addition, cash2020.

76

Mortgage Loans
The following table presents the amortized cost basis of mortgage loans for each credit quality indicator by year of origination.
December 31, 2021
Mortgage Loans Amortized Cost Basis by Origination Year (1)
(In millions)20212020201920182017PriorTotal
DSCR ≥1.6x
LTV less than 55%$$75 $$38 $99 $181 $401 
LTV 55% to 65%381517— 24 99
LTV greater than 65%17 — 8— — — 25
DSCR 1.2x - 1.6x
LTV less than 55%14 14 95 — 42 170
LTV 55% to 65%36 — — 24 10 — 70
LTV greater than 65%— 24 — — — 32
DSCR ≤1.2
LTV less than 55%— — 35 — 30 — 65
LTV 55% to 65%— — 28 — — — 28
LTV greater than 65%21 62 — — 99
Total$95 $160 $249 $79 $152 $254 $989 
(1) The values in the table above reflect DSCR on a standardized amortization period and securities were depositedLTV based on the most recent appraised values trended forward using changes in trusts with financial institutions to secure reinsurance and other obligations with various third parties. The carrying values of these deposits were approximately $587 million and $261 million asa commercial real estate price index.

As of December 31, 20172021, accrued interest receivable on mortgage loans totaled $3 million and 2016.is excluded from the amortized cost basis disclosed in the table above and the estimate of expected credit losses.


77

Note C. Fair Value
Fair value is the price that would be received upon sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The following fair value hierarchy is used in selecting inputs, with the highest priority given to Level 1, as these are the most transparent or reliable.
Level 1 - Quoted prices for identical instruments in active markets.
Level 2 - Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs are observable in active markets.
Level 3 - Valuations derived from valuation techniques in which one or more significant inputs are not observable.
Prices may fall within Level 1, 2 or 3 depending upon the methodology and inputs used to estimate fair value for each specific security. In general, the Company seeks to price securities using third-party pricing services. Securities not priced by pricing services are submitted to independent brokers for valuation and, if those are not available, internally developed pricing models are used to value assets using a methodology and inputs the Company believes market participants would use to value the assets. Prices obtained from third-party pricing services or brokers are not adjusted by the Company.
The Company performs control procedures over information obtained from pricing services and brokers to ensure prices received represent a reasonable estimate of fair value and to confirm representations regarding whether inputs are observable or unobservable. Procedures may include i) the review of pricing service methodologies or broker pricing qualifications, ii) back-testing, where past fair value estimates are compared to actual transactions executed in the market on similar dates, iii) exception reporting, where period-over-period changes in price are reviewed and challenged with the pricing service or broker based on exception criteria, and iv) deep dives, where the Company performs an independent analysis of the inputs and assumptions used to price individual securities and v) pricing validation, where prices received are compared to prices independently estimated by the Company.securities.

78

Assets and Liabilities Measured at Fair Value
Assets and liabilities measured at fair value on a recurring basis are presented in the following tables. Corporate bonds and other includes obligations of the U.S. Treasury, government-sponsored enterprises, and foreign governments and redeemable preferred stock.
December 31, 2021   Total
Assets/Liabilities
at Fair Value
(In millions)Level 1Level 2Level 3
Assets    
Fixed maturity securities:    
Corporate bonds and other$140 $23,775 $937 $24,852 
States, municipalities and political subdivisions— 11,887 56 11,943 
Asset-backed— 7,029 556 7,585 
Total fixed maturity securities140 42,691 1,549 44,380 
Equity securities:
Common stock220 — 13 233 
Non-redeemable preferred stock65 721 16 802 
Total equity securities285 721 29 1,035 
Short term and other1,798 74 — 1,872 
Total assets$2,223 $43,486 $1,578 $47,287 
Liabilities
Other liabilities$— $12 $— $12 
Total liabilities$— $12 $— $12 

December 31, 2020   Total
Assets/Liabilities
at Fair Value
(In millions)Level 1Level 2Level 3
Assets    
Fixed maturity securities:    
Corporate bonds and other$355 $24,109 $770 $25,234 
States, municipalities and political subdivisions— 11,546 46 11,592 
Asset-backed— 7,497 308 7,805 
Total fixed maturity securities355 43,152 1,124 44,631 
Equity securities:
Common stock175 — 20 195 
Non-redeemable preferred stock68 722 797 
Total equity securities243 722 27 992 
Short term and other1,761 28 — 1,789 
Total assets$2,359 $43,902 $1,151 $47,412 
Liabilities  
Other liabilities$— $19 $— $19 
Total liabilities$— $19 $— $19 
79
December 31, 2017      
Total
Assets/Liabilities
at Fair Value
(In millions)Level 1 Level 2 Level 3 
Assets       
Fixed maturity securities:       
Corporate bonds and other$128
 $19,148
 $98
 $19,374
States, municipalities and political subdivisions
 14,026
 1
 14,027
Asset-backed
 7,751
 335
 8,086
Total fixed maturity securities128
 40,925
 434
 41,487
Equity securities91
 584
 20
 695
Short term and other396
 958
 
 1,354
Total assets$615
 $42,467
 $454
 $43,536
Liabilities     
  
Other liabilities$
 $3
 $
 $3
Total liabilities$
 $3
 $
 $3

December 31, 2016      
Total
Assets/Liabilities
at Fair Value
(In millions)Level 1 Level 2 Level 3 
Assets       
Fixed maturity securities:       
Corporate bonds and other$112
 $19,285
 $130
 $19,527
States, municipalities and political subdivisions
 13,239
 1
 13,240
Asset-backed
 7,939
 199
 8,138
Total fixed maturity securities112
 40,463
 330
 40,905
Equity securities91
 
 19
 110
Short term and other475
 858
 
 1,333
Life settlement contracts, included in Other assets
 
 58
 58
Total assets$678
 $41,321
 $407
 $42,406
Liabilities     
  
Other liabilities$
 $(3) $
 $(3)
Total liabilities$
 $(3) $
 $(3)

The tables below present a reconciliation for all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3).
Level 3
(In millions)
Corporate bonds and other States, municipalities and political subdivisions Asset-backed Equity securities Derivative financial instruments Life settlement contracts Total
Level 3
(In millions)
Corporate bonds and otherStates, municipalities and political subdivisionsAsset-backedEquity securitiesTotal
Balance as of January 1, 2017$130
 $1
 $199
 $19
 $
 $58
 $407
Net realized investment gains (losses) and net change in unrealized appreciation (depreciation) included in Net income (loss)*
 
 2
 
 1
 6
 9
Net change in unrealized appreciation (depreciation) included in Other comprehensive income (loss)3
 
 3
 3
 
 
 9
Balance as of January 1, 2021Balance as of January 1, 2021$770 $46 $308 $27 $1,151 
Total realized and unrealized investment gains (losses):Total realized and unrealized investment gains (losses):
Reported in Net investment gains (losses)Reported in Net investment gains (losses)(10)— — (2)(12)
Reported in Net investment incomeReported in Net investment income— — 
Reported in Other comprehensive income (loss)Reported in Other comprehensive income (loss)(32)(1)(10)— (43)
Total realized and unrealized investment gains (losses)Total realized and unrealized investment gains (losses)(42)(1)(3)— (46)
Purchases18
 
 107
 1
 
 
 126
Purchases312 12 287 612 
Sales(5) 
 
 (3) (1) (59) (68)Sales(3)— (9)(20)(32)
Settlements(54) 
 (43) 
 
 (5) (102)Settlements(68)(1)(61)— (130)
Transfers into Level 316
 
 153
 
 
 
 169
Transfers into Level 320 — 109 21 150 
Transfers out of Level 3(10) 
 (86) 
 
 
 (96)Transfers out of Level 3(52)— (75)— (127)
Balance as of December 31, 2017$98
 $1
 $335
 $20
 $
 $
 $454
Unrealized gains (losses) on Level 3 assets and liabilities held as of December 31, 2017 recognized in Net income (loss)*$
 $
 $
 $
 $
 $
 $
Balance as of December 31, 2021Balance as of December 31, 2021$937 $56 $556 $29 $1,578 
Unrealized gains (losses) on Level 3 assets and liabilities held as of December 31, 2021 recognized in Net income (loss) in the periodUnrealized gains (losses) on Level 3 assets and liabilities held as of December 31, 2021 recognized in Net income (loss) in the period$— $— $— $(2)$(2)
Unrealized gains (losses) on Level 3 assets and liabilities held as of December 31, 2021 recognized in Other comprehensive income (loss) in the periodUnrealized gains (losses) on Level 3 assets and liabilities held as of December 31, 2021 recognized in Other comprehensive income (loss) in the period(32)(1)(11)— (44)
Level 3
(In millions)
Corporate bonds and other States, municipalities and political subdivisions Asset-backed Equity securities Life settlement contracts Total
Balance as of January 1, 2016$168
 $2
 $209
 $20
 $74
 $473
Net realized investment gains (losses) and net change in unrealized appreciation (depreciation) included in Net income (loss)*1
 
 
 (1) 5
 5
Net change in unrealized appreciation (depreciation) included in Other comprehensive income (loss)1
 
 (5) 
 
 (4)
Purchases163
 
 133
 
 
 296
Sales(36) 
 (25) 
 
 (61)
Settlements(103) (1) (32) 
 (21) (157)
Transfers into Level 3
 
 61
 
 
 61
Transfers out of Level 3(64) 
 (142) 
 
 (206)
Balance as of December 31, 2016$130
 $1
 $199
 $19
 $58
 $407
Unrealized gains (losses) on Level 3 assets and liabilities held as of December 31, 2016 recognized in Net income (loss)*$
 $
 $
 $(2) $(3) $(5)


*Net realized and unrealized gains and losses from Level 3 securities and derivatives are reported in Net income (loss) as follows:
Major Category of Assets and LiabilitiesConsolidated Statements of Operations Line Items
Fixed maturity securities available-for-sale (1)
Net realized investment gains (losses)
Fixed maturity securities tradingNet investment income
Equity securities (1)
Net realized investment gains (losses)
Other invested assets - Derivative financial instruments held in a trading portfolioNet investment income
Other invested assets - Derivative financial instruments not held in a trading portfolioNet realized investment gains (losses)
Life settlement contractsOther revenues
Other liabilities - Derivative financial instrumentsNet realized investment gains (losses)
(1) Unrealized gains and losses are reported within AOCI.
Level 3
(In millions)
Corporate bonds and otherStates, municipalities and political subdivisionsAsset-backedEquity securitiesTotal
Balance as of January 1, 2020$468 $— $165 $18 $651 
Total realized and unrealized investment gains (losses):
Reported in Net investment gains (losses)— (1)(4)(4)
Reported in Net investment income— — (2)— 
Reported in Other comprehensive income (loss)43 16 — 60 
Total realized and unrealized investment gains (losses)44 17 (6)56 
Purchases264 45 154 15 478 
Sales(3)— (9)— (12)
Settlements(13)— (32)— (45)
Transfers into Level 310 — 30 — 40 
Transfers out of Level 3— — (17)— (17)
Balance as of December 31, 2020$770 $46 $308 $27 $1,151 
Unrealized gains (losses) on Level 3 assets and liabilities held as of December 31, 2020 recognized in Net income (loss) in the period$— $— $— $(6)$(6)
Unrealized gains (losses) on Level 3 assets and liabilities held as of December 31, 2020 recognized in Other comprehensive income (loss) in the period43 18 — 62 
Securities may be transferred in or out of levels within the fair value hierarchy based on the availability of observable market information and quoted prices used to determine the fair value of the security. The availability of observable market information and quoted prices varies based on market conditions and trading volume. During the year ended December 31, 2017 there were $10 million
80

Valuation Methodologies and Inputs
The following section describes the valuation methodologies and relevant inputs used to measure different financial instruments at fair value, including an indication of the level in the fair value hierarchy in which the instruments are generally classified.
Fixed Maturity Securities
Level 1 securities include highly liquid government securities and exchange traded bonds, and redeemable preferred stock, valued using quoted market prices. Level 2 securities include most other fixed maturity securities as the significant inputs are observable in the marketplace. All classes of Level 2 fixed maturity securities are valued using a methodology based on information generated by market transactions involving identical or comparable assets, a discounted cash flow methodology, or a combination of both when necessary. Common inputs for all classes of fixed maturity securities include prices from recently executed transactions of similar securities, marketplace quotes, benchmark yields, spreads off benchmark yields, interest rates and U.S. Treasury or swap curves. Specifically for asset-backed securities, key inputs include prepayment and default projections based on past performance of the underlying collateral and current market data. Fixed maturity securities are primarily assigned to Level 3 in cases where broker/dealer quotes are significant inputs to the valuation and there is a lack of transparency as to whether these quotes are based on information that is observable in the marketplace. Level 3 securities also include private placement debt securities whose fair value is determined using internal models with some inputs that are not market observable.
Equity Securities
Level 1 equity securities include publicly traded securities valued using quoted market prices. Level 2 securities are primarily non-redeemable preferred stocks and common stocks valued using pricing for similar securities, recently executed transactions and other pricing models utilizing market observable inputs. Level 3 securities are primarily priced using broker/dealer quotes and internal models with some inputs that are not market observable.




Short Term and Other Invested Assets
Securities that are actively traded or have quoted prices are classified as Level 1. These securities include money market funds and treasury bills. Level 2 primarily includes non-U.S. government securities and commercial paper, for which all inputs are market observable. Fixed maturity securities purchased within one year of maturity are classified consistent with fixed maturity securities discussed above. Short term investments as presented in the tables above differ from the amounts presented on the Consolidated Balance Sheets because certain short term investments, such as time deposits, are not measured at fair value.
The fair value of Federal Home Loan Bank of Chicago (FHLBC) stock is equal to par because it can only be redeemed by the FHLBC at par or sold to another member of the FHLBC at par and is classified as Level 2.
As of December 31, 20172021 and December 31, 2016,2020, there were approximately $39$74 million and $31$71 million of overseas deposits within otherOther invested assets, which can be redeemed at net asset value in 90 days or less. Overseas deposits are excluded from the fair value hierarchy because their fair value is recorded using the net asset value per share (or equivalent) practical expedient.
Life Settlement Contracts
Historically, the fair value of life settlement contracts was determined as the present value of the anticipated death benefits less anticipated premium payments based on contract terms that are distinct for each insured, as well as the Company's own assumptions for mortality, premium expense and the rate of return that a buyer would require on the contracts. As discussed in Note A, Summary of Significant Accounting Policies, as of December 31, 2016 the Company reached an agreement on terms to sell the portfolio and the PSA related to the portfolio was executed on March 7, 2017. At December 31, 2016, the valuation of the life settlement contracts was based on the terms of the sale of the contract to a third party. Despite the sale, the contracts were classified as Level 3 as there is not an active market for life settlement contracts.
Derivative Financial Investments
Level 2 investments primarily include the embedded derivative on the funds withheld liability. The embedded derivative on funds withheld liability is valued using the change in fair value of the assets supporting the funds withheld liability, which are fixed maturity securities primarily valued with observable inputs.
81

Significant Unobservable Inputs
The following tables present quantitative information about the significant unobservable inputs utilized by the Company in the fair value measurements of Level 3 assets. Valuations for assets and liabilities not presented in the tables below are primarily based on broker/dealer quotes for which there is a lack of transparency as to inputs used to develop the valuations. The quantitative detail of these unobservable inputs is neither provided nor reasonably available to the Company. The valuation of life settlement contracts wasweighted average rate is calculated based on the terms of the sale of the contracts to a third party; therefore, the contracts are not included in the table below.fair value.
December 31, 2021Estimated Fair Value
(In millions)
Valuation Technique(s)Unobservable Input(s)Range
 (Weighted Average)
Fixed maturity securities$1,225 Discounted cash flowCredit spread1% - 7% (2%)
December 31, 2017
Estimated Fair Value
(In millions)
 Valuation Technique(s) Unobservable Input(s) 
Range
 (Weighted Average)
Fixed maturity securities$136
 Discounted cash flow Credit spread 1% - 12% (3%)
December 31, 2016Estimated Fair Value
(In millions)
 Valuation Technique(s) Unobservable Input(s) 
Range
 (Weighted Average)
Fixed maturity securities$106
 Discounted cash flow Credit spread 2% - 40% (4%)
December 31, 2020Estimated Fair Value
(In millions)
Valuation Technique(s)Unobservable Input(s)Range
 (Weighted Average)
Fixed maturity securities$966 Discounted cash flowCredit spread1% - 8% (3%)
For fixed maturity securities, an increase to the credit spread assumptions would result in a lower fair value measurement.



Financial Assets and Liabilities Not Measured at Fair Value
The carrying amount and estimated fair value of the Company's financial assets and liabilities which are not measured at fair value on the Consolidated Balance Sheets are presented in the following tables.
December 31, 2021Carrying
Amount
Estimated Fair Value
(In millions)Level 1Level 2Level 3Total
Assets
Mortgage loans$973 $— $— $1,018 $1,018 
Liabilities
Long term debt$2,779 $— $2,978 $— $2,978 
December 31, 2017
Carrying
Amount
 Estimated Fair Value
(In millions) Level 1 Level 2 Level 3 Total
Assets         
Mortgage loans$839
 $
 $
 $844
 $844
Note receivable46
 
 

46
 46
Liabilities         
Short term debt$150
 $
 $150
 $
 $150
Long term debt2,708
 
 2,896
 
 2,896
December 31, 2016Carrying
Amount
 Estimated Fair Value
(In millions) Level 1 Level 2 Level 3 Total
Assets         
Mortgage loans$591
 $
 $
 $594
 $594
Liabilities         
Long term debt$2,710
 $
 $2,952
 $
 $2,952
The following methods and assumptions were used to estimate the fair value of these financial assets and liabilities.
The fair values of mortgage loans were based on the present value of the expected future cash flows discounted at the current interest rate for origination of similar quality loans, adjusted for specific loan risk.
The fair value of the note receivable was based on the present value of the expected future cash flows discounted at the current interest rate for origination of similar notes, adjusted for specific credit risk.
The Company's senior notes and debentures were valued based on observable market prices. The fair value for other debt was estimated using discounted cash flows based on current incremental borrowing rates for similar borrowing arrangements.
December 31, 2020Carrying
Amount
Estimated Fair Value
(In millions)Level 1Level 2Level 3Total
Assets
Mortgage loans$1,068 $— $— $1,151 $1,151 
Liabilities
Long term debt$2,776 $— $3,148 $— $3,148 
The carrying amounts reported on the Consolidated Balance Sheets for Cash, Short term investments not carried at fair value, Accrued investment income and certain Other assets and Other liabilities approximate fair value due to the short term nature of these items. These assets and liabilities are not listed in the tables above.

82

Note D. Income Taxes
The CNA Tax Group is included in the consolidated federal income tax return of Loews and its eligible subsidiaries. Loews and the Company have agreed that for each taxable year, the Company will 1) be paid by Loews the amount, if any, by which the Loews consolidated federal income tax liability is reduced by virtue of the inclusion of the CNA Tax Group in the Loews consolidated federal income tax return, or 2) pay to Loews an amount, if any, equal to the federal income tax that would have been payable by the CNA Tax Group filing a separate consolidated tax return. In the event that Loews should have a net operating loss in the future computed on the basis of filing a separate consolidated tax return without the CNA Tax Group, the Company may be required to repay tax recoveries previously received from Loews. This agreement may be canceled by either party upon 30 days written notice.
For the years ended December 31, 2017, 20162021, 2020 and 2015,2019, the Company paid $127$238 million, $142$65 million and $256$239 million to Loews related to federal income taxes.
For 20152019 through 2017,2021, Loews and the Company participated in the Internal Revenue Service (IRS) has accepted Loews and the Company into the Compliance Assurance Process (CAP), which is a voluntary program for large corporations. Under CAP, the IRS conductsconducted a real-time audit and worksworked contemporaneously with the Company to resolve any issues prior to the filing of the 2019 tax return. The 2019 examination has been completed. For 2020 and 2021, the Company was selected to participate in the phase of CAP reserved for taxpayers whose risk of noncompliance does not warrant use of IRS resources. The Company believes that this approachparticipation in CAP should reduce tax-related uncertainties, if any.
As of December 31, 20172021 and 2016,2020, there were no unrecognized tax benefits.
The Company recognizes interest accrued related to: 1)to unrecognized tax benefits in Interest expense and 2) tax refund claims in Other revenuesIncome tax (expense) benefit on the Consolidated Statements of Operations. The Company recognizes penalties (if any) in Income tax (expense) benefit on the Consolidated Statements of Operations. During 2017, 20162021, 2020 and 20152019 the Company recognized no interest and no penalties. There were no amounts accrued for interest or penalties as of December 31, 20172021 or 2016.
On December 22, 2017, H.R.1, “An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018,” previously known as “The Tax Cuts and Jobs Act” was signed into law (Tax Reform Legislation). The Tax Reform Legislation is subject to further clarification by the issuance of future technical guidance by the U.S. Department of the Treasury and/or future technical correction legislation.
The Securities and Exchange Commission issued Staff Accounting Bulletin No. 118 (SAB 118) to provide guidance on accounting for the income tax effects of the Tax Reform Legislation. SAB 118 describes scenarios where the measurement of the income tax effects is complete, incomplete, or incomplete but for which a reasonable provisional amount can be estimated, and provides a twelve month measurement period from December 22, 2017 to complete the accounting for the income tax effects. Any future measurement period effects will be recognized when certain clarification of the Tax Reform Legislation is issued.
The Tax Reform Legislation provides for a permanent reduction in the Federal corporate income tax rate from 35% to 21% effective January 1, 2018, among other provisions.
The Company is required to recognize the effect of this tax rate change on its net deferred tax assets, including those accounted for in AOCI, in the period the tax rate change was signed into law. Consequently, the Company recorded a one-time non-cash increase to Income tax expense of $83 million in the Consolidated Statements of Operations for the year ended December 31, 2017.
The accounting for the income tax effects of the Federal corporate income tax rate change on net deferred tax assets is complete. The Company has determined there are no income tax effects for which the accounting is incomplete. Set forth below are the significant provisional items that are incomplete, but have been reasonably estimated and reflected in the remeasurement of the Company’s income taxes.
The Company has re-computed its insurance reserves and the transition adjustment from existing law. The effect of any measurement period adjustments will not impact the effective tax rate.
The Company has computed amounts under special accounting method provisions for recognizing income for Federal income tax purposes no later than for financial accounting purposes and the transition adjustment from existing law. The effect of any measurement period adjustments will not impact the effective tax rate.

The Company has not recorded current or deferred taxes with respect to the international provisions since it does not expect to have inclusions in U.S. taxable income for certain earnings of foreign subsidiaries in future years. The effect of any measurement period adjustments would impact the effective tax rate.2020.
The following table presents a reconciliation between the Company's federal income tax expense at statutory rates and the recorded income tax expense.
Years ended December 31
(In millions)202120202019
Income tax expense at statutory rates$(312)$(172)$(257)
Tax benefit from tax exempt income51 52 53 
Foreign taxes and credits(3)(1)
State income tax expense(13)(6)(14)
Other tax expense(5)(7)(4)
Income tax expense$(282)$(131)$(223)
Years ended December 31     
(In millions)2017 2016 2015
Income tax expense at statutory rates$(459) $(398) $(192)
Tax benefit from tax exempt income131
 124
 123
Foreign taxes and credits3
 3
 9
Net deferred tax asset remeasurement(83) 
 
Other tax expense(3) (7) (10)
Income tax expense$(411)
$(278) $(70)
Provision has not been made for the Company's investment in certain subsidiaries for which the Company intends to invest the undistributed earnings indefinitely. As of December 31, 2017, the Company has not provided2021, no deferred taxes of $2 millionare required on $10 million ofthe undistributed earnings relatedof subsidiaries subject to a foreign subsidiary.tax.
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The following table presents the current and deferred components of the Company's income tax expense.
Years ended December 31     Years ended December 31
(In millions)2017 2016 2015(In millions)202120202019
Current tax expense$(243) $(142) $(220)Current tax expense$(235)$(180)$(269)
Deferred tax benefit (expense)(168) (136) 150
Deferred tax (expense) benefitDeferred tax (expense) benefit(47)49 46 
Total income tax expense$(411) $(278) $(70)Total income tax expense$(282)$(131)$(223)
Total income tax presented above includes foreign tax (expense)/benefitexpense of approximately $1$18 million, $(9)$16 million and $(14)$19 million related to pretax income from foreign operations of approximately $39$124 million, $51$45 million and $71$43 million for the years ended December 31, 2017, 20162021, 2020 and 2015.

2019.
The deferred tax effects of the significant components of the Company's deferred tax assets and liabilities are presented in the following table.
December 31   December 31
(In millions)2017 2016(In millions)20212020
Deferred Tax Assets:   Deferred Tax Assets:
Insurance reserves:   Insurance reserves:
Property and casualty claim and claim adjustment expense reserves$74
 $125
Property and casualty claim and claim adjustment expense reserves$173 $157 
Unearned premium reserves142
 206
Unearned premium reserves193 174 
Receivables15
 27
Deferred RevenueDeferred Revenue64 62 
Employee benefits154
 272
Employee benefits46 122 
Life settlement contracts
 56
Deferred retroactive reinsurance benefit68
 117
Deferred retroactive reinsurance benefit90 83 
Investment valuation differences
 
Other assets105
 148
Other assets88 92 
Gross deferred tax assets558
 951
Gross deferred tax assets654 690 
Deferred Tax Liabilities:   Deferred Tax Liabilities:
Investment valuation differences55
 57
Investment valuation differences93 28 
Deferred acquisition costs77
 120
Deferred acquisition costs99 93 
Net unrealized gains233
 309
Net unrealized gains272 453 
Software and hardwareSoftware and hardware27 31 
Other liabilities56
 86
Other liabilities21 19 
Gross deferred tax liabilities421
 572
Gross deferred tax liabilities512 624 
Net deferred tax asset$137
 $379
Net deferred tax asset$142 $66 
As of December 31, 2017,2021, the CNA Tax Group had no loss carryforwards orand no tax credit carryforwards.carryforward. The foreign operations had loss carryforwards of $138 million, of which $1 million expires in 2035 and $137 million has no expiration. The foreign operations had a tax credit carryforward of $4 million, which has no expiration.
Although realization of deferred tax assets is not assured, management believes it is more likely than not that the recognized net deferred tax asset will be realized through recoupment of ordinary and capital taxes paid in prior carryback years and through future earnings, reversal of existing temporary differences and available tax planning strategies. As a result, no valuation allowance was recorded as of December 31, 20172021 or 2016.2020.

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Note E. Claim, and Claim Adjustment Expense and Future Policy Benefit Reserves
The Company's propertyProperty and casualty insurance claim and claim adjustment expense reserves represent the estimated amounts necessary to resolve all outstanding claims, including IBNR claims as of the reporting date. The Company's reserve projections are based primarily on detailed analysis of the facts in each case, the Company's experience with similar cases and various historical development patterns. Consideration is given to such historical patterns such as claim reserving trends and settlement practices, loss payments, pending levels of unpaid claims and product mix, as well as court decisions and economic conditions, including inflation, and public attitudes. All of these factors can affect the estimation of claim and claim adjustment expense reserves.
Establishing claim and claim adjustment expense reserves, including claim and claim adjustment expense reserves for catastrophic events that have occurred, is an estimation process. Many factors can ultimately affect the final settlement of a claim and, therefore, the necessary reserve. Changes in the law, results of litigation, medical costs, the cost of repair materials and labor rates can affect ultimate claim costs. In addition, time can be a critical part of reserving determinations since the longer the span between the incidence of a loss and the payment or settlement of the claim, the more variable the ultimate settlement amount can be. Accordingly, short-tail claims, such as property damage claims, tend to be more reasonably estimable than long-tail claims, such as workers' compensation, general liability and professional liability claims. Adjustments to prior year reserve estimates, if necessary, are reflected in the results of operations in the period that the need for such adjustments is determined. There can be no assurance that the Company's ultimate cost for insurance losses will not exceed current estimates.
Catastrophes are an inherent risk of the property and casualty insurance business and have contributed to material period-to-period fluctuations in the Company's results of operations and/or equity. The Company reported catastrophe losses, net of reinsurance, of $380 million, $165 million and $141 million for the years ended December 31, 2017, 2016 and 2015. Net catastrophe losses for the year ended December 31, 2017 included $256 million related to Hurricanes Harvey, Irma and Maria. Catastrophe-related reinsurance reinstatement premium was $4 million for the year ended December 31, 2017. The remaining net catastrophe losses in 2017 resulted primarily from the California wildfires and U.S. weather related events. Net catastrophe losses in 2016 related primarily to U.S. weather-related events and the Fort McMurray wildfires. Net catastrophe losses in 2015 related primarily to U.S. weather-related events.
Liability for Unpaid Claim and Claim Adjustment Expenses
The table below reconciles the net liability for unpaid claim and claim adjustment expenses for the property and casualty segments to the amount presented inon the Consolidated Balance Sheets.
As of December 31 
(In millions)2017
Net liability for unpaid claim and claim adjustment expenses: 
Specialty$5,179
Commercial7,964
International1,432
Corporate & Other205
Life & Group (1)
3,290
Total net claim and claim adjustment expenses18,070
Reinsurance receivables: (2)
 
Specialty669
Commercial621
International204
Corporate & Other (3)
2,231
Life & Group209
Total reinsurance receivables3,934
Total gross liability for unpaid claim and claim adjustment expenses$22,004
As of December 31
(In millions)2021
Net liability for unpaid claim and claim adjustment expenses:
Specialty$5,265 
Commercial8,065 
International1,940 
Life & Group (1)
3,641 
Corporate & Other294 
Total net claim and claim adjustment expenses19,205 
Reinsurance receivables: (2)
Specialty1,168 
Commercial825 
International340 
Life & Group113 
Corporate & Other (3)
2,523 
Total reinsurance receivables4,969 
Total gross liability for unpaid claim and claim adjustment expenses$24,174 
(1) The Life & Group segment amount isamounts are primarily related to long term care claim reserves, but also includesinclude amounts related to unfunded structured settlements arising from short durationshort-duration contracts. Long term care policies are long durationlong-duration contracts.
(2) Reinsurance receivables presented are gross of the allowance for uncollectible reinsurance and do not include reinsurance receivables related to paid losses.
(3) The Corporate & Other Reinsurance receivables are primarily related to A&EP claims covered under the Loss Portfolio Transfer.Transfer (LPT).

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The following table presents a reconciliation between beginning and ending claim and claim adjustment expense reserves, including claim and claim adjustment expense reserves of the Life & Group segment.
As of or for the years ended December 31
(In millions)202120202019
Reserves, beginning of year:
Gross$22,706 $21,720 $21,984 
Ceded4,005 3,835 4,019 
Net reserves, beginning of year18,701 17,885 17,965 
Reduction of net reserves due to Excess Workers' Compensation Loss Portfolio Transfer(632)— — 
Net incurred claim and claim adjustment expenses:
Provision for insured events of current year5,970 5,793 5,356 
Increase (decrease) in provision for insured events of prior years(104)(119)(127)
Amortization of discount174 183 184 
Total net incurred (1)
6,040 5,857 5,413 
Net payments attributable to:
Current year events(1,014)(948)(992)
Prior year events(3,830)(4,216)(4,584)
Total net payments(4,844)(5,164)(5,576)
Foreign currency translation adjustment and other(60)123 83 
Net reserves, end of year19,205 18,701 17,885 
Ceded reserves, end of year4,969 4,005 3,835 
Gross reserves, end of year$24,174 $22,706 $21,720 
(1) Total net incurred above does not agree to Insurance claims and policyholders' benefits as reflected on the Consolidated Statements of Operations due to amounts related to retroactive reinsurance deferred gain accounting, the loss on the Excess Workers' Compensation LPT, uncollectible reinsurance and benefit expenses related to future policy benefits, which are not reflected in the table above.
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As of or for the years ended December 31     
(In millions)2017 2016 2015
Reserves, beginning of year:     
Gross$22,343
 $22,663
 $23,271
Ceded4,094
 4,087
 4,344
Net reserves, beginning of year18,249
 18,576
 18,927
Net incurred claim and claim adjustment expenses:     
Provision for insured events of current year5,201
 5,025
 4,934
Decrease in provision for insured events of prior years(381) (342) (255)
Amortization of discount179
 175
 166
Total net incurred (1)
4,999
 4,858
 4,845
Net payments attributable to:     
Current year events(975) (967) (856)
Prior year events(4,366) (4,167) (4,089)
Total net payments(5,341) (5,134) (4,945)
Foreign currency translation adjustment and other163
 (51) (251)
Net reserves, end of year18,070
 18,249
 18,576
Ceded reserves, end of year3,934
 4,094
 4,087
Gross reserves, end of year$22,004
 $22,343
 $22,663
Table of Contents
(1)Total net incurred above does not agree to Insurance claims and policyholders' benefits as reflected on the Consolidated Statements of Operations due to amounts related to retroactive reinsurance deferred gain accounting, uncollectible reinsurance and loss deductible receivables, and benefit expenses related to future policy benefits, which are not reflected in the table above.


Reserving Methodology
In developing claim and claim adjustment expense (“loss”(loss or “losses”)losses) reserve estimates, ourthe Company's actuaries perform detailed reserve analyses that are staggered throughout the year. The data is organized at a reserve group level. Every reserve group is reviewed at least once during the year.year, but most are reviewed more frequently. The analyses generally review losses gross of ceded reinsurance and apply the ceded reinsurance terms to the gross estimates to establish estimates net of reinsurance. Factors considered include, but are not limited to, the historical pattern and volatility of the actuarial indications, the sensitivity of the actuarial indications to changes in paid and incurred loss patterns, the consistency of claims handling processes, the consistency of case reserving practices, changes in the Company's pricing and underwriting, pricing and underwriting trends in the insurance market and legal, judicial, social and economic trends. In addition to the detailed analyses, we reviewthe Company reviews actual loss emergence for all products each quarter.
In developing the loss reserve estimates for property and casualty contracts, wethe Company generally projectprojects ultimate losses using several common actuarial methods as listed below. We reviewThe Company reviews the various indications from the various methods and applyapplies judgment to select an actuarial point estimate. The carried reserve may differ from the actuarial point estimate as a result of the Company's consideration of the factors noted above as well as the potential volatility of the projections associated with the specific product being analyzed and other factors affecting claims costs that may not be quantifiable through traditional actuarial analysis. The indicated required reserve is the difference between the selected ultimate loss and the inception-to-date paid losses. The difference between the selected ultimate loss and the case incurred or reported loss is IBNR. IBNR includes a provision for development on known cases as well as a provision for late reported incurred claims. Further, the Company does not establish case reserves for allocated loss adjustment expenses (ALAE), therefore ALAE reserves are included in our estimate of IBNR.
The most frequently utilized methods to project ultimate losses include the following:
Paid development: The paid development method estimates ultimate losses by reviewing paid loss patterns and applying them to accident years with further expected changes in paid loss.
Incurred development: The incurred development method is similar to the paid development method, but it uses case incurred losses instead of paid losses.
Loss ratio: The loss ratio method multiplies premiums by an expected loss ratio to produce ultimate loss estimates for each accident year.
Bornhuetter-Ferguson using premiums and paid loss: The Bornhuetter-Ferguson using premiums and paid loss method is a combination of the paid development approach and the loss ratio approach. This method normally determines expected loss ratios similar to the approach used to estimate the expected loss ratio for the loss ratio method.
Bornhuetter-Ferguson using premiums and incurred loss: The Bornhuetter-Ferguson using premiums and incurred loss method is similar to the Bornhuetter-Ferguson using premiums and paid loss method except that it uses case incurred losses.
Frequency times severity: The frequency times severity method multiplies a projected number of ultimate claims by an estimated ultimate average loss for each accident year to produce ultimate loss estimates.
Stochastic modeling: The stochastic modeling produces a range of possible outcomes based on varying assumptions related to the particular product being modeled.
For many exposures, especially those that can be considered long-tail, a particular accident or policy year may not have a sufficient volume of paid losses to produce a statistically reliable estimate of ultimate losses. In such a case, ourthe Company's actuaries typically assign more weight to the incurred development method than to the paid development method. As claims continue to settle and the volume of paid loss increases, the actuaries may assign additional weight to the paid development method. For most of ourthe Company's products, even the incurred losses for accident or policy years that are early in the claim settlement process will not be of sufficient volume to produce a reliable estimate of ultimate losses. In these cases, wethe Company may not assign much, if any weight to the paid and incurred development methods. We willThe Company may use the loss ratio, Bornhuetter-Ferguson andand/or frequency times severity methods. For short-tail exposures, the paid and incurred development methods can often be relied on sooner, primarily because ourthe Company's history includes a sufficient number of years to cover the entire period over which paid and incurred losses are expected to change. However, wethe
87

Company may also use the loss ratio, Bornhuetter-Ferguson andand/or frequency times severity methods for short-tail exposures. For other more complex reserve groups where the above methods may not produce reliable indications, we usethe Company uses additional methods tailored to the characteristics of the specific situation.
Future Policy Benefit Reserves
ReservesThe Company's reserving methodologies for policyholder benefits for our Life & Group segment, which primarily includes long term care, are based on actuarial assumptions which include estimates of morbidity, persistency, inclusive of mortality, discount rates, future premium rate increases and expenses over the life of the contracts. Under GAAP, the best estimates of the actuarial assumptions at the date the contract was issued are locked-in throughout the life of the contract, unless a premium deficiency develops, which occurred in 2015. As a result, the Company updated the assumptions

to represent management’s best estimates at the time of the premium deficiency and these revised assumptions are locked-in unless another premium deficiency is identified.
Certain claim liabilities are more difficult to estimate and have differing methodologies and considerations which are described below.
Mass Tort and A&EP Reserves
Our mass tort and A&EP reserving methodologies are similar as both are based on detailed account reviews of large accounts with estimates of ultimate payments based on ultimate payments considering the facts in each case and the Company's view of applicable law and coverage litigation. These reserves are subject to greater inherent variability than is typical
88

Gross and significant unresolved legal issues such as the existence of coverage and the definition of an occurrence.
Property and Casualty Reserve Reviews
Our actuarial reserve analyses result in point estimates. Each quarter, the results of detailed reserve reviews are summarized and discussed with our senior management to determine management's best estimate of reserves. Senior management considers many factors in making this decision. The factors include, but are not limited to, the historical pattern and volatility of the actuarial indications, the sensitivity of the actuarial indications to changes in paid and incurred loss patterns, the consistency of claims handling processes, the consistency of case reserving practices, changes in our pricing and underwriting, pricing and underwriting trends in the insurance market and legal, judicial, social and economic trends. Our recorded reserves reflect our best estimate as of a particular point in time based upon known facts, consideration of the factors cited above and our judgment. The carried reserve may differ from the actuarial point estimate as the result of our consideration of the factors noted above as well as the potential volatility of the projections associated with the specific product being analyzed and other factors affecting claims costs that may not be quantifiable through traditional actuarial analysis.Net Carried Reserves
The following tables present the gross and net carried reserves.
December 31, 2021 Specialty CommercialInternationalLife & GroupCorporate & OtherTotal
(In millions)
Gross Case Reserves$1,578 $3,184 $859 $3,383 $1,551 $10,555 
Gross IBNR Reserves4,855 5,706 1,421 371 1,266 13,619 
Total Gross Carried Claim and Claim Adjustment Expense Reserves$6,433 $8,890 $2,280 $3,754 $2,817 $24,174 
Net Case Reserves$1,338 $2,850 $744 $3,291 $146 $8,369 
Net IBNR Reserves3,927 5,215 1,196 350 148 10,836 
Total Net Carried Claim and Claim Adjustment Expense Reserves$5,265 $8,065 $1,940 $3,641 $294 $19,205 
December 31, 2017 Specialty  Commercial International Life & Group Corporate & Other Total
December 31, 2020December 31, 2020 Specialty CommercialInternationalLife & GroupCorporate & OtherTotal
(In millions) Specialty  Commercial International Life & Group Corporate & Other Total(In millions)
Gross Case Reserves Gross Case Reserves$1,567 $3,215 $892 $3,406 $1,614 $10,694 
Gross IBNR Reserves4,043
 4,221
 892
 113
 1,065
 10,334
Gross IBNR Reserves4,181 5,035 1,199 337 1,260 12,012 
Total Gross Carried Claim and Claim Adjustment Expense Reserves$5,848
 $8,585
 $1,636
 $3,499
 $2,436
 $22,004
Total Gross Carried Claim and Claim Adjustment Expense Reserves$5,748 $8,250 $2,091 $3,743 $2,874 $22,706 
Net Case Reserves$1,656
 $4,047
 $640
 $3,208
 $94
 $9,645
Net Case Reserves$1,410 $2,885 $777 $3,298 $560 $8,930 
Net IBNR Reserves3,523
 3,917
 792
 82
 111
 8,425
Net IBNR Reserves3,488 4,590 1,045 317 331 9,771 
Total Net Carried Claim and Claim Adjustment Expense Reserves$5,179
 $7,964
 $1,432
 $3,290
 $205
 $18,070
Total Net Carried Claim and Claim Adjustment Expense Reserves$4,898 $7,475 $1,822 $3,615 $891 $18,701 
December 31, 2016 Specialty  Commercial International 
Life &
Group
 
Corporate
& Other
 Total
(In millions)     
Gross Case Reserves$1,871
 $4,661
 $632
 $3,172
 $1,524
 $11,860
Gross IBNR Reserves4,278
 4,233
 696
 186
 1,090
 10,483
Total Gross Carried Claim and Claim Adjustment Expense Reserves$6,149
 $8,894
 $1,328
 $3,358
 $2,614
 $22,343
Net Case Reserves$1,681
 $4,353
 $548
 $2,951
 $94
 $9,627
Net IBNR Reserves3,723
 3,952
 653
 158
 136
 8,622
Total Net Carried Claim and Claim Adjustment Expense Reserves$5,404
 $8,305
 $1,201
 $3,109
 $230
 $18,249


Development Tables
The loss reserve development tables presented herein illustrate the change over time of reserves established for claim and allocated claim adjustment expenses arising from short duration insurance contracts for certain lines of business within our property & casualty segments. Not all lines of business or segments are presented based on their context to the Company's overall loss reserves, calendar year reserve development, or calendar year net earned premiums. Insurance contracts are considered to be short duration contracts when the contracts are not expected to remain in force for an extended period of time. The Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses tables, reading across, show the cumulative net incurred claim and allocated claim adjustment expenses relating to each accident year at the end of the stated calendar year. Changes in the cumulative amount across time are the result of the Company's expanded awareness of additional facts and circumstances that pertain to the unsettled claims. The Cumulative Net Paid Claims and Allocated Claim Adjustment Expenses tables, reading across, show the cumulative amount paid for claims in each accident year as of the end of the stated calendar year. The Net Strengthening or (Releases) of Prior Accident Year Reserves tables, reading across, show the net increase or decrease in the cumulative net incurred accident year claim and allocated claim adjustment expenses during each stated calendar year and indicates whether the reserves for that accident year were strengthened or released.
The information in the tables is reported on a net basis after reinsurance and does not include the effects of discounting. The information contained in the years preceding calendar year 2016 is unaudited. Information contained in the tables pertaining to our International segment has been presented at the year-end 2017 foreign currency exchange rates for all periods presented to remove the effects of foreign currency exchange rate changes between calendar years. The Company has presented development information for the Hardy business prospectively from the date of acquisition and is presented as a separate table within our International segment. To the extent the Company enters into a commutation, the transaction is reported on a prospective basis. To the extent that the Company enters into a disposition, the effects of the disposition are reported on a retrospective basis by removing the balances associated with the disposed of business.
The amounts reported for the cumulative number of reported claims include direct and assumed open and closed claims by accident year at the claimant level. The number excludes claim counts for claims within a policy deductible where the insured is responsible for payment of losses in the deductible layer. Claim count data for certain assumed reinsurance contracts is unavailable.
In the loss reserve development tables, IBNR includes reserves for incurred but not reported losses and expected development on case reserves. The Company does not establish case reserves for ALAE, therefore ALAE reserves are also included in the estimate of IBNR.

Net Prior Year Development
Changes in estimates of claim and claim adjustment expense reserves, and premium accruals, net of reinsurance, for prior years are defined as net prior year development.loss reserve development (development). These changes can be favorable or unfavorable. The following tables and discussion present the net prior yeartable presents development recorded for the Specialty, Commercial, International and Corporate & Other segments.
Years ended December 31
(In millions)202120202019
Pretax (favorable) unfavorable development:
Specialty$(45)$(61)$(92)
Commercial(6)(7)(40)
International(2)21 
Corporate & Other60 50 38 
Total pretax (favorable) unfavorable development$11 $(20)$(73)
December 31, 2017         
(In millions)

Specialty
  Commercial International 
Corporate
& Other
 Total
Pretax (favorable) unfavorable net prior year claim and claim adjustment expense reserve development$(202) $(87) $(9) $(10) $(308)
Pretax (favorable) unfavorable premium development(14) 28
 (18) 
 (4)
Total pretax (favorable) unfavorable net prior year development$(216) $(59) $(27) $(10) $(312)
December 31, 2016         
(In millions)

Specialty
  Commercial International 
Corporate
& Other
 Total
Pretax (favorable) unfavorable net prior year claim and claim adjustment expense reserve development$(287) $55
 $(58) $2
 $(288)
Pretax (favorable) unfavorable premium development(18) (2) (6) 
 (26)
Total pretax (favorable) unfavorable net prior year development$(305) $53
 $(64) $2
 $(314)
December 31, 2015         
(In millions)

Specialty
  Commercial International 
Corporate
& Other
 Total
Pretax (favorable) unfavorable net prior year claim and claim adjustment expense reserve development$(141) $(15) $(54) $
 $(210)
Pretax (favorable) unfavorable premium development(11) (15) 18
 
 (8)
Total pretax (favorable) unfavorable net prior year development$(152) $(30) $(36) $
 $(218)
Favorable net prior yearUnfavorable development of $79 million, $45$60 million and $50 million was recorded inwithin the LifeCorporate & GroupOther segment for the years ended December 31, 2017, 20162021 and 2015. The favorable net prior year2020 due to higher than expected emergence in mass tort exposures in older accident years primarily related to abuse. Unfavorable development of $38 million was recorded within the Corporate & Other segment for the year ended December 31, 2017 was driven by lower2019 primarily due to higher than expected claim severity.emergence in environmental mass tort exposures in older accident years.
Premium
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Segment Development Tables
For the Specialty, Commercial and International segments, the following tables present further detail and commentary on the development can occurreflected in the propertyfinancial statements for each of the periods presented. Also presented are loss reserve development tables that illustrate the change over time of reserves established for claim and casualtyallocated claim adjustment expenses arising from short-duration insurance contracts for certain lines of business within each of these segments. Not all lines of business or segments are presented based on their context to the Company's overall loss reserves, calendar year reserve development, or calendar year net earned premiums. Insurance contracts are considered to be short-duration contracts when therethe contracts are not expected to remain in force for an extended period of time.
The Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses tables, reading across, show the cumulative net incurred claim and allocated claim adjustment expenses relating to each accident year at the end of the stated calendar year. Changes in the cumulative amount across time are the result of the Company's expanded awareness of additional facts and circumstances that pertain to the unsettled claims. The Cumulative Net Paid Claims and Allocated Claim Adjustment Expenses tables, reading across, show the cumulative amount paid for claims in each accident year as of the end of the stated calendar year. The Net Strengthening or (Releases) of Prior Accident Year Reserves tables, reading across, show the net increase or decrease in the cumulative net incurred accident year claim and allocated claim adjustment expenses during each stated calendar year and indicates whether the reserves for that accident year were strengthened or released.
The information in the tables is reported on a changenet basis after reinsurance and does not include the effects of discounting. The information contained in exposure on auditable policies or when premium accruals differcalendar years 2020 and prior is unaudited. Information contained in the tables pertaining to the Company's International segment has been presented at the year-end 2021 foreign currency exchange rates for all periods presented to remove the effects of foreign currency exchange rate changes between calendar years. The Company has presented development information for the Hardy business prospectively from processed premium.  Audits on policies usually occur in a period after the expiration date of acquisition and is presented as a separate table within the policy. See further informationCompany's International segment. To the extent the Company enters into a commutation, the transaction is reported on a prospective basis. To the premium developmentextent that the Company enters into a disposition, the effects of the disposition are reported on a retrospective basis by removing the balances associated with the disposed of business.
The amounts reported for the cumulative number of reported claims include direct and assumed open and closed claims by accident year at the claimant level. The number excludes claim counts for claims within a policy deductible where the insured is responsible for payment of losses in the Commercial segmentdeductible layer. Claim count data for certain assumed reinsurance contracts is unavailable.
IBNR includes reserves for incurred but not reported losses and expected development on case reserves. The Company does not establish case reserves for allocated loss adjusted expenses (ALAE), therefore ALAE reserves are also included in the years ended December 31, 2017 and 2016 within the Small Business discussion in Note F.estimate of IBNR.



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Specialty
The following table presents further detail of the net prior year claim and claim adjustment expense reserve development (development) recorded for the Specialty segment.
Years ended December 31     Years ended December 31
(In millions)2017 2016 2015(In millions)202120202019
Pretax (favorable) unfavorable development:     Pretax (favorable) unfavorable development:
Medical Professional Liability$5
 $(37) $(43)Medical Professional Liability$23 $35 $75 
Other Professional Liability and Management Liability(131) (130) 
Other Professional Liability and Management Liability24 (15)(69)
Surety(84) (63) (69)Surety(73)(69)(92)
Warranty4
 4
 (2)Warranty(14)(7)(15)
Other4
 (61) (27)Other(5)(5)
Total pretax (favorable) unfavorable development$(202) $(287) $(141)Total pretax (favorable) unfavorable development$(45)$(61)$(92)
20172021
Unfavorable development in medical professional liability was due to higher than expected large loss activity in recent accident years.
Unfavorable development in other professional liability and management liability was due to higher than expected frequency of large losses in multiple accident years, and higher than expected claim severity and frequency in the Company’s cyber business in recent accident years.
Favorable development in surety was primarily due to lower than expected frequency and lack of systemic activity in recent accident years.
Favorable development in warranty was due to lower than expected loss emergence in a recent accident year.
2020
Unfavorable development in medical professional liability was primarily due to continued higher than expected frequency in aging services and higher than expected severity for hospitalsof large losses in recent accident years. This was partially offset by favorable developmentyears and unfavorable outcomes on specific claims in life sciences and hospitals in priorolder accident years as well as favorable development related to unallocated claim adjustment expenses.years.
Favorable development in other professional liability and management liability was primarily due to favorable settlements on closed claims and a lower frequency of large losses for accident years 2011 through 2015 for professional and management liability, lower than expected claim frequencyloss emergence in accident years 2012 through 2015 for professional liabilityyear 2017 and lower than expected severity in accident years 2014 through 2015 for professional liability.prior to 2010.
Favorable development in surety coverages was primarily due to lower than expected frequency and lack of large losses insystemic loss activity for accident years 20152019 and prior.
20162019
FavorableUnfavorable development forin medical professional liability was primarily due to lower than expected severities for individual healthcare professionals, allied facilities and hospitals in accident years 2011 and prior and betterhigher than expected severity in medical products liability in accident years 20102016 through 2015. This was partially offset by unfavorable development2018 in accident years 2012 and 2013 related tothe Company's aging services business, higher than expected large loss emergenceseverity in hospitalsaccident year 2013 in the Company's allied healthcare business, unfavorable outcomes on individual claims and higher than expected frequency and severity in accident years 2014 and 2015year 2017 in our aging servicesthe Company's dentists business.
Favorable development in other professional liability and management liability was primarily due to lower than expected claim frequency and favorable settlementsoutcomes on closedindividual claims in accident years 2017 and prior related to financial institutions, lower than expected large claim losses in recent accident years in the Company's public company directors and officers liability (D&O) business and lower than expected frequency of claims inloss adjustment expenses across accident years 2010 through 2014 related to professional services and financial institutions. This was partially offset by unfavorable development related to a specific financial institutions claim in accident year 2014, higher management liability severities in accident year 2015, and deterioration on credit crises-related claims in accident year 2009.2018.
Favorable development in surety coverages was primarily due to lower than expected frequency of large losses infor accident years 20142018 and prior.
Favorable development for other coverages provided to Specialty customersin warranty was due to better than expected claim frequency and claim severity in commercial lines coverages in accident years 2010 through 2015.


2015
Overall, favorable development for medical professional liability was related to lower than expected severity in accident years 2012 and prior. Unfavorable development was recorded related to increased claim frequency and severity in the aging services business in accident years 2013 and 2014.
Favorable development in other professional liability and management liability related to better than expected large loss emergence in financial institutions primarily in accident years 2011 through 2014. Additional favorable development related to lower than expected severity for professional services in accident years 2011 and prior. Unfavorable development was recorded related to increased frequency of large claims on public company management liability in accident years 2012 through 2014.
Favorable development for surety coverages was primarily due to lower than expected frequencypaid loss emergence on vehicle products.
91

Table of large losses in accident years 2013 and prior.Contents
Favorable development for other coverages was due to better than expected claim frequency in property coverages provided to Specialty customers in accident year 2014.

Specialty - Line of Business Composition
The table below provides the line of business composition of the net liability for unpaid claim and claim adjustment expenses for the Specialty segment.
As of December 31
(In millions)2021
Net liability for unpaid claim and claim adjustment expenses:
Medical Professional Liability$1,556 
Other Professional Liability and Management Liability3,159 
Surety406 
Warranty44 
Other100 
Total net liability for unpaid claim and claim adjustment expenses$5,265 

92
As of December 31 
(In millions)2017
Net liability for unpaid claim and claim adjustment expenses: 
Medical Professional Liability$1,700
Other Professional Liability and Management Liability2,912
Surety368
Warranty54
Other145
Total net liability for unpaid claim and claim adjustment expenses$5,179




Specialty - Medical Professional Liability
Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar Year As of December 31, 2017As of December 31Calendar YearAs of December 31, 2021
(In millions, except reported claims data)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 IBNR Cumulative Number of Claims(In millions, except reported claims data)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021IBNRCumulative Number of Claims
Accident Year                       Accident Year
2008$426
 $451
 $496
 $480
 $468
 $468
 $467
 $455
 $442
 $438
 $4
 14,102
2009  462
 469
 494
 506
 480
 471
 463
 432
 422
 3
 15,594
2010    483
 478
 478
 486
 470
 446
 403
 398
 9
 15,239
2011      486
 492
 507
 533
 501
 491
 491
 16
 17,481
2012        526
 529
 575
 567
 559
 563
 39
 18,503
2012$464 $469 $508 $498 $493 $484 $493 $499 $497 $497 $17,755 
2013          534
 540
 560
 567
 573
 44
 19,777
2013462 479 500 513 525 535 545 531 530 11 19,565 
2014            511
 548
 585
 564
 78
 19,764
2014450 489 537 530 535 529 527 524 19,800 
2015              480
 539
 543
 164
 17,690
2015433 499 510 494 488 510 501 28 18,170 
2016                469
 527
 268
 14,743
2016427 487 485 499 508 510 24 16,085 
2017                  452
 370
 11,137
2017412 449 458 460 455 41 15,197 
20182018404 429 431 448 60 14,997 
20192019430 445 458 156 13,804 
20202020477 476 347 9,935 
20212021377 337 6,761 
                Total
 $4,971
 $995
  Total$4,776 $1,016 
Cumulative Net Paid Claims and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar YearAs of December 31Calendar Year
(In millions)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017(In millions)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021
Accident Year                   Accident Year
2008$9
 $90
 $207
 $282
 $332
 $377
 $395
 $409
 $428
 $431
2009  9
 75
 180
 278
 328
 353
 377
 396
 408
2010    11
 93
 186
 273
 338
 361
 371
 380
2011      18
 121
 225
 315
 379
 407
 435
2012        15
 121
 236
 359
 428
 475
2012$14 $117 $221 $323 $388 $427 $457 $479 $482 $487 
2013          18
 121
 259
 364
 429
201317 119 255 355 414 462 495 508 512 
2014            25
 149
 274
 374
201423 136 258 359 417 472 489 497 
2015              22
 105
 241
201522 101 230 313 384 420 444 
2016                18
 126
201618 121 246 339 401 436 
2017                  20
201719 107 235 308 355 
2018201821 115 211 290 
2019201917 91 183 
2020202011 61 
2021202111 
                Total
 $3,319
Total$3,276 
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presentedNet liability for unpaid claim and allocated claim adjustment expenses for the accident years presented  $1,652
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented$1,500 
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2008  20
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2012Net liability for unpaid claim and claim adjustment expenses for accident years prior to 201228 
Liability for unallocated claim adjustment expenses for accident years presentedLiability for unallocated claim adjustment expenses for accident years presented  28
Liability for unallocated claim adjustment expenses for accident years presented28 
Total net liability for unpaid claim and claim adjustment expensesTotal net liability for unpaid claim and claim adjustment expenses  $1,700
Total net liability for unpaid claim and claim adjustment expenses$1,556 
Net strengthening or (releases) of prior accident year reserves is presented in the following table.
For the years ended December 31 Calendar Year  For the years ended December 31Calendar Year
(In millions) 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 Total(In millions)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021Total
Accident Year                    Accident Year
2008 $25
 $45
 $(16) $(12) $
 $(1) $(12) $(13) $(4) $12
2009 

 7
 25
 12
 (26) (9) (8) (31) (10) (40)
2010   

 (5) 
 8
 (16) (24) (43) (5) (85)
2011     

 6
 15
 26
 (32) (10) 
 5
2012       

 3
 46
 (8) (8) 4
 37
2012$$39 $(10)$(5)$(9)$$$(2)$— $33 
2013         

 6
 20
 7
 6
 39
201317 21 13 12 10 10 (14)(1)68 
2014           

 37
 37
 (21) 53
201439 48 (7)(6)(2)(3)74 
2015             

 59
 4
 63
201566 11 (16)(6)22 (9)68 
2016               

 58
 58
201660 (2)14 83 
2017201737 (5)43 
2018201825 17 44 
2019201915 13 28 
20202020(1)(1)
Total net development for the accident years presented aboveTotal net development for the accident years presented above  (27) (2) 32
  Total net development for the accident years presented above52 32 13 
Total net development for accident years prior to 2008  (16) (35) (19)  
Total net development for accident years prior to 2012Total net development for accident years prior to 201221 
Total unallocated claim adjustment expense developmentTotal unallocated claim adjustment expense development  
 
 (8)  Total unallocated claim adjustment expense development— 
TotalTotal  $(43) $(37) $5
  Total$75 $35 $23 
(1) Data presented for these calendar years is required supplemental information, which is unaudited.



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Table of Contents
Specialty - Other Professional Liability and Management Liability
Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar Year As of December 31, 2017As of December 31Calendar YearAs of December 31, 2021
(In millions, except reported claims data)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 IBNR Cumulative Number of Claims(In millions, except reported claims data)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021IBNRCumulative Number of Claims
Accident Year                       Accident Year
2008$916
 $933
 $954
 $924
 $915
 $880
 $850
 $845
 $827
 $818
 $26
 16,331
2009  829
 873
 903
 898
 891
 900
 895
 903
 901
 32
 17,274
2010    825
 827
 850
 848
 846
 836
 823
 826
 31
 17,805
2011      876
 904
 933
 948
 944
 910
 898
 71
 18,643
2012        907
 894
 876
 870
 833
 832
 73
 18,262
2012$923 $909 $887 $878 $840 $846 $833 $831 $850 $848 $18 18,506 
2013          844
 841
 879
 840
 824
 83
 17,362
2013884 894 926 885 866 863 850 846 833 30 17,950 
2014            841
 859
 854
 798
 158
 16,984
2014878 898 885 831 835 854 845 841 37 17,577 
2015              847
 851
 832
 296
 16,603
2015888 892 877 832 807 813 836 41 17,436 
2016                859
 859
 426
 17,004
2016901 900 900 904 907 891 84 17,968 
2017                  810
 701
 15,206
2017847 845 813 791 775 152 18,159 
20182018850 864 869 906 202 19,926 
20192019837 845 856 283 19,357 
20202020930 944 568 19,095 
202120211,037 911 15,487 
                Total
 $8,398
 $1,897
  Total$8,767 $2,326 
Cumulative Net Paid Claims and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar YearAs of December 31Calendar Year
(In millions)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017(In millions)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021
Accident Year                   Accident Year
2008$39
 $181
 $376
 $515
 $600
 $641
 $678
 $719
 $741
 $753
2009  37
 195
 358
 550
 638
 719
 769
 798
 821
2010    31
 203
 404
 541
 630
 670
 721
 753
2011      71
 313
 502
 604
 682
 726
 781
2012        57
 248
 398
 570
 648
 698
2012$56 $248 $400 $573 $651 $711 $755 $792 $812 $816 
2013          51
 240
 426
 583
 667
201354 249 447 618 702 754 771 779 787 
2014            51
 212
 375
 494
201451 223 392 515 647 707 743 787 
2015              48
 209
 377
201560 234 404 542 612 677 725 
2016                60
 236
201664 248 466 625 701 736 
2017                  52
201757 222 394 498 557 
2018201854 282 473 599 
2019201964 263 422 
2020202067 248 
2021202158 
                Total
 $5,632
Total$5,735 
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presentedNet liability for unpaid claim and allocated claim adjustment expenses for the accident years presented  $2,766
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented$3,032 
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2008  79
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2012Net liability for unpaid claim and claim adjustment expenses for accident years prior to 201274 
Liability for unallocated claim adjustment expenses for accident years presentedLiability for unallocated claim adjustment expenses for accident years presented  67
Liability for unallocated claim adjustment expenses for accident years presented53 
Total net liability for unpaid claim and claim adjustment expensesTotal net liability for unpaid claim and claim adjustment expenses  $2,912
Total net liability for unpaid claim and claim adjustment expenses$3,159 
Net strengthening or (releases) of prior accident year reserves is presented in the following table.
For the years ended December 31 Calendar Year  For the years ended December 31Calendar Year
(In millions) 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 Total(In millions)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021Total
Accident Year                    Accident Year
2008
 $17
 $21
 $(30) $(9) $(35) $(30) $(5) $(18) $(9) $(98)
2009 

 44
 30
 (5) (7) 9
 (5) 8
 (2) 72
2010   

 2
 23
 (2) (2) (10) (13) 3
 1
2011     

 28
 29
 15
 (4) (34) (12) 22
2012       

 (13) (18) (6) (37) (1) (75)2012$(14)$(22)$(9)$(38)$$(13)$(2)$19 $(2)$(75)
2013         

 (3) 38
 (39) (16) (20)201310 32 (41)(19)(3)(13)(4)(13)(51)
2014           

 18
 (5) (56) (43)201420 (13)(54)19 (9)(4)(37)
2015             

 4
 (19) (15)2015(15)(45)(25)23 (52)
2016               

 
 
2016(1)— (16)(10)
20172017(2)(32)(22)(16)(72)
2018201814 37 56 
2019201911 19 
2020202014 14 
Total net development for the accident years presented aboveTotal net development for the accident years presented above  26
 (134) (112) 

Total net development for the accident years presented above(35)34 
Total net development for accident years prior to 2008  (26) 4
 (14)  
Total net development for accident years prior to 2012Total net development for accident years prior to 2012(20)(21)(12)
Total unallocated claim adjustment expense developmentTotal unallocated claim adjustment expense development  
 
 (5)  Total unallocated claim adjustment expense development(14)— 
TotalTotal  $
 $(130) $(131)  Total$(69)$(15)$24 
(1) Data presented for these calendar years is required supplemental information, which is unaudited.



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Table of Contents
Specialty - Surety
Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar Year As of December 31, 2017As of December 31Calendar YearAs of December 31, 2021
(In millions, except reported claims data)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 IBNR Cumulative Number of Claims(In millions, except reported claims data)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021IBNRCumulative Number of Claims
Accident Year                       Accident Year
2008$114
 $114
 $73
 $68
 $61
 $52
 $48
 $45
 $44
 $44
 $
 7,199
2009  114
 114
 103
 85
 68
 59
 52
 53
 53
 1
 6,679
2010    112
 112
 111
 84
 76
 66
 63
 59
 7
 5,962
2011      120
 121
 116
 87
 75
 70
 66
 9
 5,795
2012        120
 122
 98
 70
 52
 45
 9
 5,519
2012$120 $122 $98 $70 $52 $45 $39 $38 $37 $36 $5,586 
2013          120
 121
 115
 106
 91
 10
 4,993
2013120 121 115 106 91 87 83 82 82 5,088 
2014            123
 124
 94
 69
 25
 4,938
2014123 124 94 69 60 45 45 43 5,118 
2015              131
 131
 104
 63
 4,670
2015131 131 104 79 63 58 53 5,055 
2016                124
 124
 84
 4,707
2016124 124 109 84 67 64 10 5,521 
2017                  120
 97
 2,901
2017120 115 103 84 71 5,795 
20182018114 108 91 62 19 6,097 
20192019119 112 98 44 5,816 
20202020128 119 104 4,006 
20212021137 129 2,592 
                Total
 $775
 $305
  Total$765 $328 
Cumulative Net Paid Claims and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar YearAs of December 31Calendar Year
(In millions)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017(In millions)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021
Accident Year                   Accident Year
2008$9
 $27
 $35
 $39
 $42
 $43
 $43
 $43
 $43
 $43
2009  13
 24
 34
 41
 43
 45
 46
 47
 47
2010    13
 34
 50
 55
 57
 58
 55
 52
2011      19
 42
 55
 58
 60
 60
 56
2012        5
 32
 34
 35
 35
 36
2012$$32 $34 $35 $35 $36 $37 $37 $36 $36 
2013          16
 40
 69
 78
 78
201316 40 69 78 78 78 77 78 79 
2014            7
 30
 38
 36
201430 38 36 38 38 39 39 
2015              7
 26
 38
201526 38 40 42 44 42 
2016                5
 37
201637 45 45 43 43 
2017                  23
201723 37 41 46 49 
2018201825 34 39 
2019201912 34 44 
2020202020 
20212021
                Total
 $446
Total$396 
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presentedNet liability for unpaid claim and allocated claim adjustment expenses for the accident years presented  $329
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented$369 
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2008  9
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2012Net liability for unpaid claim and claim adjustment expenses for accident years prior to 201217 
Liability for unallocated claim adjustment expenses for accident years presentedLiability for unallocated claim adjustment expenses for accident years presented  30
Liability for unallocated claim adjustment expenses for accident years presented20 
Total net liability for unpaid claim and claim adjustment expensesTotal net liability for unpaid claim and claim adjustment expenses  $368
Total net liability for unpaid claim and claim adjustment expenses$406 
Net strengthening or (releases) of prior accident year reserves is presented in the following table.
For the years ended December 31 Calendar Year  For the years ended December 31Calendar Year
(In millions) 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 Total(In millions)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021Total
Accident Year                    Accident Year
2008
 $
 $(41) $(5) $(7) $(9) $(4) $(3) $(1) $
 $(70)
2009   
 (11) (18) (17) (9) (7) 1
 
 (61)
2010     
 (1) (27) (8) (10) (3) (4) (53)
2011       1
 (5) (29) (12) (5) (4) (54)
2012         2
 (24) (28) (18) (7) (75)2012$$(24)$(28)$(18)$(7)$(6)$(1)$(1)$(1)$(84)
2013           1
 (6) (9) (15) (29)2013(6)(9)(15)(4)(4)(1)— (38)
2014             1
 (30) (25) (54)2014(30)(25)(9)(15)— (2)(80)
2015               
 (27) (27)2015— (27)(25)(16)(5)(5)(78)
2016                 
 
2016— (15)(25)(17)(3)(60)
20172017(5)(12)(19)(13)(49)
20182018(6)(17)(29)(52)
20192019(7)(14)(21)
20202020(9)(9)
Total net development for the accident years presented aboveTotal net development for the accident years presented above  (65) (65) (82)  Total net development for the accident years presented above(79)(67)(76)
Total net development for accident years prior to 2008  (4) 2
 1
  
Total net development for accident years prior to 2012Total net development for accident years prior to 2012(3)(2)
Total unallocated claim adjustment expense developmentTotal unallocated claim adjustment expense development  
 
 (3)  Total unallocated claim adjustment expense development(10)— — 
TotalTotal  $(69) $(63) $(84)  Total$(92)$(69)$(73)
(1) Data presented for these calendar years is required supplemental information, which is unaudited.



95


Table of Contents
Commercial
The following table presents further detail of the development recorded for the Commercial segment.
Years ended December 31     Years ended December 31
(In millions)2017 2016 2015(In millions)202120202019
Pretax (favorable) unfavorable development:     Pretax (favorable) unfavorable development:
Commercial Auto$(38) $(46) $(22)Commercial Auto$53 $33 $(25)
General Liability
 (28) (33)General Liability15 15 16 
Workers' Compensation(65) 150
 80
Workers' Compensation(82)(96)(13)
Property and Other16
 (21) (40)Property and Other41 (18)
Total pretax (favorable) unfavorable development$(87) $55
 $(15)Total pretax (favorable) unfavorable development$(6)$(7)$(40)
20172021
Unfavorable development in commercial auto was due to higher than expected claim severity in the Company’s middle market and construction businesses in multiple accident years.
Unfavorable development in general liability was due to higher than expected claim severity in the Company’s construction and umbrella businesses in multiple accident years.
Favorable development for commercial autoin workers’ compensation was primarily due to favorable medical trends driving lower than expected severity in multiple accident years.
2020
Unfavorable development in commercial auto was due to higher than expected claim severity in the Company's middle market and construction business in recent accident years.
Unfavorable development in general liability was driven by increased bodily injury severities in accident years 20132012 through 2016 as well as a large favorable recovery on a claim in accident year 2012.
Favorable development for workers’ compensation was primarily related to decreases inand higher than expected frequency and severity in recentthe Company’s umbrella business in accident years partially attributable2015 through 2019.
Favorable development in workers’ compensation was due to California reforms impactingfavorable medical costs. This was partially offset by unfavorable development related to an adverse arbitration ruling on reinsurance recoverables from oldertrends driving lower than expected severity in multiple accident years as well as the recognition of loss estimates associated with favorable premium development.years.
Unfavorable development forin property and other was primarily due to higher than expected severitylarge loss activity in accident year 2016.2019 in the Company's middle market, national accounts and marine business units.
20162019
Favorable development forin commercial auto was primarily due to favorable settlements on claims in accident years 2010 through 2014 andcontinued lower than expected severitiesseverity across accident years 2015 and prior and a decline in bodily injury frequency in accident years 2012 through 2015.year 2018.
Unfavorable development in general liability was driven by higher than expected large loss emergence in the Company's umbrella business in multiple accident years.
Favorable development for general liability was primarily due to better than expected claim settlements in accident years 2012 through 2014 and better than expected severity on umbrella claims in accident years 2010 through 2013. This was partially offset by unfavorable development related to an increase in reported claims prior to the closing of the three year window set forth by the Minnesota Child Victims Act in accident years 2006 and prior.
Unfavorable development for workers'workers’ compensation was primarily due to higher than expected severity for Defense Base Act contractors that largely resulted from a reduction of expected future recoveries from the US Department of Labor under the War Hazard Act. Further unfavorable development was due to the impact of recent Florida court rulings for accident years 2008 through 2015. These were partially offset by favorable development related to lower than expected frequencies related to our ongoing Middle Market and Small Business results for accident years 2009 through 2014.
Favorable development for property and other was primarily due to better than expected loss frequency in accident years 2013 through 2015. This was partially offset by unfavorable development related to higher than expected severity from a fourth quarter 2015 catastrophe event.



2015
Favorable development for commercial auto was primarily due tomedical trends driving lower than expected severity in accident years 20092012 through 2014.2018.
Favorable development for general liability was primarily due to favorable settlements on claims in accident years 2010 through 2013.
Unfavorable development for workers’ compensation was primarily due to higher than expected severity related to Defense Base Act contractors in accident years 2008 through 2014.
Favorable development for property and other was primarily due to betterdriven by lower than expected claim emergence from 2012 and 2014severity related to catastrophe events and better than expected frequency of large claims in accident year 2014.years 2017 and 2018.
The year ended December 31, 2015 also included unfavorable loss development related to extra contractual obligation losses and losses associated with premium development.
96


Table of Contents
Commercial - Line of Business Composition
The table below provides the line of business composition of the net liability for unpaid claim and claim adjustment expenses for the Commercial segment.
As of December 31
(In millions)2021
Net Claim and claim adjustment expenses:
Commercial Auto$673 
General Liability2,911 
Workers' Compensation3,850 
Property and Other631 
Total net liability for claim and claim adjustment expenses$8,065 

97
As of December 31 
(In millions)2017
Net Claim and claim adjustment expenses: 
Commercial Auto$389
General Liability3,123
Workers' Compensation4,012
Property and Other440
Total net liability for claim and claim adjustment expenses$7,964


Table of Contents

Commercial - Commercial Auto
Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar Year As of December 31, 2017As of December 31Calendar YearAs of December 31, 2021
(In millions, except reported claims data)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 IBNR Cumulative Number of Claims(In millions, except reported claims data)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021IBNRCumulative Number of Claims
Accident Year                       Accident Year
2008$322
 $323
 $316
 $306
 $309
 $305
 $298
 $298
 $296
 $297
 $
 56,424
2009  287
 272
 274
 278
 281
 277
 275
 272
 272
 
 47,343
2010    262
 274
 279
 283
 291
 286
 281
 280
 1
 46,335
2011      262
 273
 279
 293
 290
 285
 285
 3
 46,691
2012        270
 282
 292
 296
 300
 292
 7
 45,288
2012$275 $289 $299 $303 $307 $299 $299 $297 $296 $295 $46,288 
2013          242
 259
 257
 241
 237
 10
 38,539
2013246 265 265 249 245 245 241 241 241 39,430 
2014            231
 221
 210
 204
 19
 33,029
2014234 223 212 205 205 201 201 202 33,628 
2015              199
 197
 187
 35
 29,924
2015201 199 190 190 183 181 183 30,427 
2016                196
 183
 53
 29,745
2016198 186 186 186 190 195 30,449 
2017                  196
 117
 25,173
2017199 198 200 221 232 30,940 
20182018229 227 227 245 34,292 
20192019257 266 289 31 37,142 
20202020310 303 107 28,837 
20212021397 271 27,182 
                Total
 $2,433
 $245
  Total$2,582 $433 
Cumulative Net Paid Claims and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar YearAs of December 31Calendar Year
(In millions)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017(In millions)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021
Accident Year                   Accident Year
2008$83
 $158
 $210
 $244
 $274
 $289
 $291
 $292
 $293
 $295
2009  72
 128
 188
 229
 257
 269
 270
 270
 271
2010    72
 137
 197
 240
 265
 274
 279
 280
2011      78
 141
 193
 241
 264
 275
 277
2012        77
 157
 214
 253
 276
 278
2012$78 $160 $220 $259 $282 $285 $290 $291 $291 $292 
2013          73
 132
 164
 195
 219
201374 135 168 200 225 234 238 239 239 
2014            63
 100
 135
 163
201464 102 137 166 187 196 198 199 
2015              52
 95
 128
201552 96 130 153 172 175 178 
2016                51
 91
201652 93 126 154 175 185 
2017                  58
201758 107 150 178 203 
2018201866 128 175 212 
2019201977 147 203 
2020202071 134 
2021202183 
                Total
 $2,060
Total$1,928 
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presentedNet liability for unpaid claim and allocated claim adjustment expenses for the accident years presented  $373
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented$654 
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2008  6
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2012Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2012
Liability for unallocated claim adjustment expenses for accident years presentedLiability for unallocated claim adjustment expenses for accident years presented  10
Liability for unallocated claim adjustment expenses for accident years presented14 
Total net liability for unpaid claim and claim adjustment expensesTotal net liability for unpaid claim and claim adjustment expenses  $389
Total net liability for unpaid claim and claim adjustment expenses$673 
Net strengthening or (releases) of prior accident year reserves is presented in the following table.
For the years ended December 31 Calendar Year  For the years ended December 31Calendar Year
(In millions) 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 Total(In millions)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021Total
Accident Year                    Accident Year
2008
 $1
 $(7) $(10) $3
 $(4) $(7) $
 $(2) $1
 $(25)
2009   (15) 2
 4
 3
 (4) (2) (3) 
 (15)
2010     12
 5
 4
 8
 (5) (5) (1) 18
2011       11
 6
 14
 (3) (5) 
 23
2012         12
 10
 4
 4
 (8) 22
2012$14 $10 $$$(8)$— $(2)$(1)$(1)$20 
2013           17
 (2) (16) (4) (5)201319 — (16)(4)— (4)— — (5)
2014             (10) (11) (6) (27)2014(11)(11)(7)— (4)— (32)
2015               (2) (10) (12)2015(2)(9)— (7)(2)(18)
2016                 (13) (13)2016(12)— — (3)
20172017(1)21 11 33 
20182018(2)— 18 16 
2019201923 32 
20202020(7)(7)
Total net development for the accident years presented aboveTotal net development for the accident years presented above  (18) (40) (41) 

Total net development for the accident years presented above(17)31 52 
Total net development for accident years prior to 2008  (4) (6) 1
  
Total net development for accident years prior to 2012Total net development for accident years prior to 2012(7)
Total unallocated claim adjustment expense developmentTotal unallocated claim adjustment expense development  
 
 2
  Total unallocated claim adjustment expense development(1)— — 
TotalTotal  $(22) $(46) $(38)  Total$(25)$33 $53 
(1) Data presented for these calendar years is required supplemental information, which is unaudited.



98

Table of Contents
Commercial - General Liability
Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar Year As of December 31, 2017As of December 31Calendar YearAs of December 31, 2021
(In millions, except reported claims data)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 IBNR Cumulative Number of Claims(In millions, except reported claims data)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021IBNRCumulative Number of Claims
Accident Year                       Accident Year
2008$611
 $604
 $630
 $647
 $633
 $632
 $613
 $600
 $591
 $592
 $13
 44,655
2009  591
 637
 634
 633
 629
 623
 619
 622
 627
 18
 44,038
2010    566
 597
 599
 649
 695
 675
 659
 654
 19
 43,472
2011      537
 534
 564
 610
 611
 621
 615
 29
 38,216
2012        539
 563
 579
 570
 558
 569
 34
 34,249
2012$587 $611 $639 $636 $619 $635 $635 $630 $632 $632 $20 35,313 
2013          615
 645
 634
 643
 604
 62
 33,255
2013650 655 650 655 613 623 620 623 624 24 33,706 
2014            627
 634
 635
 627
 131
 27,478
2014653 658 654 631 635 658 659 659 28 28,064 
2015              573
 574
 585
 208
 23,082
2015581 576 574 589 600 602 617 42 24,118 
2016                622
 647
 351
 21,893
2016623 659 667 671 673 683 68 24,511 
2017                  627
 547
 15,375
2017632 632 632 634 630 67 22,195 
20182018653 644 646 639 205 19,917 
20192019680 682 682 330 18,602 
20202020723 722 516 13,028 
20212021782 706 9,759 
                Total
 $6,147
 $1,412
  Total$6,670 $2,006 
Cumulative Net Paid Claims and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar YearAs of December 31Calendar Year
(In millions)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017(In millions)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021
Accident Year                   Accident Year
2008$31
 $129
 $261
 $390
 $473
 $528
 $550
 $560
 $567
 $574
2009  33
 112
 270
 392
 486
 532
 557
 584
 596
2010    27
 139
 267
 414
 530
 577
 608
 618
2011      27
 135
 253
 389
 484
 534
 562
2012        27
 127
 233
 340
 417
 473
2012$28 $132 $247 $374 $454 $510 $559 $579 $597 $602 
2013          33
 135
 257
 377
 469
201331 128 240 352 450 510 551 572 582 
2014            29
 115
 245
 379
201431 119 247 376 481 547 569 607 
2015              31
 132
 247
201519 110 230 357 446 501 530 
2016                34
 163
201632 163 279 407 481 524 
2017                  27
201723 118 250 399 471 
2018201833 107 228 307 
2019201925 98 181 
2020202023 99 
2021202126 
                Total
 $4,108
Total$3,929 
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presentedNet liability for unpaid claim and allocated claim adjustment expenses for the accident years presented  $2,039
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented$2,741 
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2008  1,026
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2012Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2012119 
Liability for unallocated claim adjustment expenses for accident years presentedLiability for unallocated claim adjustment expenses for accident years presented  58
Liability for unallocated claim adjustment expenses for accident years presented51 
Total net liability for unpaid claim and claim adjustment expensesTotal net liability for unpaid claim and claim adjustment expenses  $3,123
Total net liability for unpaid claim and claim adjustment expenses$2,911 
Net strengthening or (releases) of prior accident year reserves is presented in the following table.
For the years ended December 31 Calendar Year  For the years ended December 31Calendar Year
(In millions) 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 Total(In millions)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021Total
Accident Year                    Accident Year
2008
 $(7) $26
 $17
 $(14) $(1) $(19) $(13) $(9) $1
 $(19)
2009   46
 (3) (1) (4) (6) (4) 3
 5
 36
2010     31
 2
 50
 46
 (20) (16) (5) 88
2011       (3) 30
 46
 1
 10
 (6) 78
2012         24
 16
 (9) (12) 11
 30
2012$24 $28 $(3)$(17)$16 $— $(5)$$— $45 
2013           30
 (11) 9
 (39) (11)2013(5)(42)10 (3)(26)
2014             7
 1
 (8) 
2014(4)(23)23 — 
2015               1
 11
 12
2015(5)(2)15 11 15 36 
2016                 25
 25
201636 10 60 
20172017— — (4)(2)
20182018(9)(7)(14)
20192019— 
20202020(1)(1)
Total net development for the accident years presented aboveTotal net development for the accident years presented above  (49) (13) (5) 

Total net development for the accident years presented above21 16 14 
Total net development for accident years prior to 2008  16
 (15) (2)  
Total net development for accident years prior to 2012Total net development for accident years prior to 2012(4)(1)(1)
Total unallocated claim adjustment expense developmentTotal unallocated claim adjustment expense development  
 
 7
  Total unallocated claim adjustment expense development(1)— 
TotalTotal  $(33) $(28) $
  Total$16 $15 $15 
(1) Data presented for these calendar years is required supplemental information, which is unaudited.



99



Table of Contents
Commercial - Workers' Compensation
Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar Year As of December 31, 2017As of December 31Calendar YearAs of December 31, 2021
(In millions, except reported claims data)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 IBNR Cumulative Number of Claims(In millions, except reported claims data)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021IBNRCumulative Number of Claims
Accident Year                       Accident Year
2008$558
 $575
 $593
 $606
 $608
 $612
 $622
 $630
 $638
 $652
 $34
 59,911
2009  583
 587
 594
 596
 600
 611
 617
 625
 632
 34
 51,161
2010    576
 619
 641
 663
 683
 697
 717
 721
 33
 48,144
2011      593
 628
 637
 648
 642
 666
 668
 23
 44,691
2012        589
 616
 648
 661
 671
 667
 63
 41,756
2012$601 $627 $659 $669 $678 $673 $671 $668 $663 $664 $66 42,804 
2013          528
 563
 584
 610
 584
 57
 38,153
2013537 572 592 618 593 582 561 552 548 91 38,867 
2014            459
 474
 474
 448
 106
 33,072
2014467 480 479 452 450 446 439 448 105 33,502 
2015              416
 426
 401
 154
 31,470
2015422 431 406 408 394 382 372 101 31,894 
2016                421
 399
 200
 31,310
2016426 405 396 382 366 355 104 31,981 
2017                  434
 254
 27,929
2017440 432 421 400 402 92 33,121 
20182018450 440 428 415 104 34,851 
20192019452 449 437 134 34,248 
20202020477 466 228 29,188 
20212021468 300 25,711 
                Total
 $5,606
 $958
  Total$4,575 $1,325 
Cumulative Net Paid Claims and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar YearAs of December 31Calendar Year
(In millions)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017(In millions)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021
Accident Year                   Accident Year
2008$92
 $233
 $323
 $381
 $425
 $461
 $489
 $505
 $520
 $541
2009  88
 223
 315
 381
 435
 468
 495
 516
 539
2010    94
 245
 352
 433
 500
 531
 565
 603
2011      97
 245
 353
 432
 471
 515
 557
2012        86
 229
 338
 411
 465
 503
2012$87 $232 $342 $416 $470 $509 $524 $536 $538 $541 
2013          79
 211
 297
 366
 413
201380 213 300 370 417 419 411 414 417 
2014            60
 157
 213
 256
201461 159 215 258 282 290 297 306 
2015              50
 130
 179
201551 131 180 212 231 243 251 
2016                52
 127
201653 129 169 198 219 227 
2017                  62
201763 151 207 243 265 
2018201868 163 229 259 
2019201971 169 223 
2020202065 147 
2021202167 
                Total
 $3,780
Total$2,703 
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presentedNet liability for unpaid claim and allocated claim adjustment expenses for the accident years presented  $1,826
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented$1,872 
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2008  2,216
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2012Net liability for unpaid claim and claim adjustment expenses for accident years prior to 20121,941 
Other (2)
Other (2)
  (37)
Other (2)
(14)
Liability for unallocated claim adjustment expenses for accident years presentedLiability for unallocated claim adjustment expenses for accident years presented  7
Liability for unallocated claim adjustment expenses for accident years presented51 
Total net liability for unpaid claim and claim adjustment expensesTotal net liability for unpaid claim and claim adjustment expenses  $4,012
Total net liability for unpaid claim and claim adjustment expenses$3,850 
Net strengthening or (releases) of prior accident year reserves is presented in the following table.
For the years ended December 31 Calendar Year  For the years ended December 31Calendar Year
(In millions) 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 Total(In millions)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021Total
Accident Year                    Accident Year
2008
 $17
 $18
 $13
 $2
 $4
 $10
 $8
 $8
 $14
 $94
2009   4
 7
 2
 4
 11
 6
 8
 7
 49
2010     43
 22
 22
 20
 14
 20
 4
 145
2011       35
 9
 11
 (6) 24
 2
 75
2012         27
 32
 13
 10
 (4) 78
2012$26 $32 $10 $$(5)$(2)$(3)$(5)$$63 
2013           35
 21
 26
 (26) 56
201335 20 26 (25)(11)(21)(9)(4)11 
2014             15
 
 (26) (11)201413 (1)(27)(2)(4)(7)(19)
2015               10
 (25) (15)2015(25)(14)(12)(10)(50)
2016                 (22) (22)2016(21)(9)(14)(16)(11)(71)
20172017(8)(11)(21)(38)
20182018(10)(12)(13)(35)
20192019(3)(12)(15)
20202020(11)(11)
Total net development for the accident years presented aboveTotal net development for the accident years presented above  71
 106
 (76) 

Total net development for the accident years presented above(77)(85)(49)
Adjustment for development on a discounted basisAdjustment for development on a discounted basis  (2) 1
 (4)  Adjustment for development on a discounted basis
Total net development for accident years prior to 2008  11
 43
 14
  
Total net development for accident years prior to 2012Total net development for accident years prior to 201238 (13)(35)
Total unallocated claim adjustment expense developmentTotal unallocated claim adjustment expense development  
 
 1
  Total unallocated claim adjustment expense development23 — — 
TotalTotal  $80
 $150
 $(65)  Total$(13)$(96)$(82)
(1) Data presented for these calendar years is required supplemental information, which is unaudited.
(2) Other includes the effect of discounting lifetime claim reserves.

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Table of Contents
International
The following table presents further detail of the development recorded for the International segment.
Years ended December 31     Years ended December 31
(In millions)2017 2016 2015(In millions)202120202019
Pretax (favorable) unfavorable development:     Pretax (favorable) unfavorable development:
Medical Professional Liability$(4) $(5) $(9)
Other Professional Liability(13) 12
 (16)
Liability2
 (30) (17)
Property & Marine(15) (34) (29)
CommercialCommercial$(35)(2)$(8)
SpecialtySpecialty36 37 
Other21
 (1) 17
Other(3)(8)
Total pretax (favorable) unfavorable development$(9) $(58) $(54)Total pretax (favorable) unfavorable development$$(2)$21 
2017(1) Effective December 31, 2021 the International lines of business were consolidated to align with domestic operations. Prior period information has been conformed to the new line of business presentation.
2021
Favorable development for other professional liabilityin commercial was primarily due to better than expected emergence in the Canadian run-off business in accident years 2014 and prior, several favorable settlements relating to large claims in the Europe Professional Indemnity portfolio, and lower than expected large loss frequency in the Europe Financial Institutions portfolio. This was partially offset by higher than expected severity inemergence across multiple accident year 2015 arising from the management liability business.
Favorable development for property and marine was due to better than expected frequency in accident years 2014 and 2015.years.
Unfavorable development for other coveragesin specialty was primarily due to higher than expected large claim frequencyseverity in the Hardy Political Risks portfolio, relating largely to accident year 2016.
2016
Unfavorable development for otherCompany’s medical treatment and professional liability was primarily due to higher than expected large loss emergencebusinesses in multiple accident years 2011 through 2015 associated with our Commercial Institutions business, partially offset by favorable settlements on claims in accident years 2013 and prior.years.
Favorable development for liability was primarily due to favorable settlements on claims in accident years 2013 and prior related to our Canadian package business. Additional favorable development in accident years 2013 and 2015 was primarily due to lower than expected frequency of large losses related to our Europe business.
Favorable development for property and marine was due to better than expected severity on the December 2015 UK floods and better than expected attritional losses and large loss experience on accident years 2013 through 2015 for Hardy business. Additional favorable development was due to a commutation of exposures in marine run-off classes on our Europe business.

2015
Favorable development in medical professional liability was due to better than expected frequency of losses in accident years 2011 to 2013.
Favorable development in other professional liability was due to better than expected large loss emergence in accident years 2011 and prior.
Favorable development in liability was due to better than expected large loss emergence in accident years 2012 and prior.
Favorable development in property and marine was due to better than expected individual large loss emergence and favorable settlements on large claims in accident years 2013 and 2014.2019
Unfavorable development in other isspecialty was primarily driven by professional indemnity within Europe financial lines in accident years 2017 and 2018 due to higher than expected large losses in financial institutionspotential design and political risk, primarily in accident year 2014.construct exposures.

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International - Line of Business Composition
The table below provides the composition of the net liability for unpaid claim and claim adjustment expenses for the International segment.
As of December 31
(In millions)2021
Net Claim and claim adjustment expenses:
International excluding Hardy$1,400 
Hardy540 
Total net liability for claim and claim adjustment expenses$1,940 

102
As of December 31 
(In millions)2017
Net Claim and claim adjustment expenses: 
International excluding Hardy$1,026
Hardy406
Total net liability for claim and claim adjustment expenses$1,432


Table of Contents

International, - Excluding Hardy
Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar Year As of December 31, 2017As of December 31Calendar YearAs of December 31, 2021
(In millions, except reported claims data)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 IBNR Cumulative Number of Claims(In millions, except reported claims data)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021IBNRCumulative Number of Claims
Accident Year                       Accident Year
2008$243
 $246
 $234
 $226
 $226
 $218
 $227
 $229
 $225
 $224
 $7
 25,185
2009  272
 268
 270
 271
 256
 252
 242
 233
 232
 7
 21,402
2010    247
 244
 239
 232
 222
 215
 208
 202
 13
 22,943
2011      281
 283
 275
 253
 242
 235
 232
 11
 25,448
2012        282
 289
 273
 266
 267
 259
 28
 25,450
2012$278 $285 $269 $262 $261 $254 $247 $241 $236 $250 $16 24,998 
2013          304
 307
 298
 278
 273
 43
 24,276
2013285 301 293 273 269 260 251 247 251 12 23,967 
2014            292
 308
 308
 296
 68
 25,343
2014288 303 303 291 283 300 301 294 16 24,946 
2015              307
 323
 321
 88
 23,563
2015301 317 316 298 292 294 297 27 23,357 
2016                301
 320
 120
 17,166
2016296 315 300 297 287 302 37 17,776 
2017                  317
 178
 14,772
2017312 378 401 393 388 84 18,470 
20182018384 402 407 406 81 20,726 
20192019357 371 368 91 17,974 
20202020398 389 184 13,909 
20212021426 297 10,401 
                Total
 $2,676
 $563
  Total$3,371 $845 
Cumulative Net Paid Claims and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar Year
(In millions)
2012(1)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021
Accident Year
2012$46 $117 $151 $172 $188 $200 $210 $213 $215 $218 
201351 116 144 161 176 186 206 218 224 
201454 126 154 173 190 211 245 250 
201558 137 168 189 213 228 239 
201668 136 164 188 200 223 
201767 152 193 223 247 
201894 173 221 252 
201976 171 209 
202062 133 
202158 
Total$2,053 
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented$1,318 
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 201247 
Liability for unallocated claim adjustment expenses for accident years presented35 
Total net liability for unpaid claim and claim adjustment expenses$1,400 
As of December 31Calendar Year
(In millions)
2008(1)
 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017
Accident Year                   
2008$37
 $92
 $137
 $148
 $156
 $164
 $179
 $187
 $207
 $208
2009  42
 99
 130
 146
 163
 174
 186
 197
 203
2010    50
 103
 126
 143
 157
 167
 176
 178
2011      47
 121
 143
 158
 172
 184
 193
2012        46
 118
 153
 175
 191
 204
2013          53
 118
 146
 165
 179
2014            55
 128
 157
 174
2015              59
 140
 171
2016                69
 139
2017                  67
Total  $1,716
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented  $960
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2008  42
Liability for unallocated claim adjustment expenses for accident years presented  24
Total net liability for unpaid claim and claim adjustment expenses  $1,026
Net strengthening or (releases) of prior accident year reserves is presented in the following table.
For the years ended December 31For the years ended December 31 Calendar Year  For the years ended December 31Calendar Year
(In millions) 
2009(1)
 
2010(1)
 
2011(1)
 
2012(1)
 
2013(1)
 
2014(1)
 
2015(1)(2)

 
2016(1)(2)
 
2017(2)
 
Total (2)
(In millions)
2013(1)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021
Total (2)
Accident Year                    Accident Year
2008
 $3
 $(12) $(8) $
 $(8) $9
 $2
 $(4) $(1) $(19)
2009   (4) 2
 1
 (15) (4) (10) (9) (1) (40)
2010     (3) (5) (7) (10) (7) (7) (6) (45)
2011       2
 (8) (22) (11) (7) (3) (49)
2012         7
 (16) (7) 1
 (8) (23)2012$$(16)$(7)$(1)$(7)$(7)$(6)$(5)$14 $(28)
2013           3
 (9) (20) (5) (31)201316 (8)(20)(4)(9)(9)(4)(34)
2014             16
 
 (12) 4
201415 — (12)(8)17 (7)
2015               16
 (2) 14
201516 (1)(18)(6)(4)
2016                 19
 19
201619 (15)(3)(10)15 
2017201766 23 (8)(5)76 
2018201818 (1)22 
2019201914 (3)11 
20202020(9)(9)
(1) Data presented for these calendar years is required supplemental information, which is unaudited.
(2) The amounts included in the loss reserve development tables above are presented at the year-end 20172021 foreign currency exchange rates for all periods presented to remove the effects of foreign currency exchange rate fluctuations between calendar years. The amounts included within the table on page 101 presenting the detail of the development recorded within the International segment include the impact of fluctuations in foreign currency exchange rates.

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International - Hardy
Cumulative Net Incurred Claim and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31As of December 31     Calendar Year As of December 31, 2017As of December 31Calendar YearAs of December 31, 2021
(In millions, except reported claims data)Net Claim and Allocated Claim Adjustment Expense Reserves at Acquisition 
Net Incurred Claim and Allocated Claim Adjustment Expenses in 2012(1)(2)
 Total Acquired Net Claim and Allocated Claim Adjustment Expense Reserves and 2012 Incurreds 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017 IBNR Cumulative Number of Claims(In millions, except reported claims data)Net Claim and Allocated Claim Adjustment Expense Reserves at Acquisition
Net Incurred Claim and Allocated Claim Adjustment Expenses in 2012(1)(2)
Total Acquired Net Claim and Allocated Claim Adjustment Expense Reserves and 2012 Incurreds
2013(1)(2)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021IBNRCumulative Number of Claims
Accident Year                   Accident Year
2008$18
 $(3) $15
 $11
 $13
 $13
 $12
 $13
 $1
 4,237
200912
 
 12
 7
 (4) 1
 (2) (3) 
 3,852
201049
 (10) 39
 48
 53
 47
 53
 52
 (1) 4,524
2011126
 
 126
 136
 136
 140
 140
 140
 (2) 6,228
201234
 71
 105
 106
 113
 121
 114
 115
 (1) 6,863
2012$34 $71 $105 $105 $112 $120 $113 $114 $116 $115 $113 $114 $(3)7,045 
2013      133
 148
 140
 141
 142
 1
 7,525
2013132 147 139 140 142 145 146 146 144 7,893 
2014        187
 185
 179
 172
 (2) 7,954
2014186 184 178 171 172 173 172 169 (6)8,493 
2015          192
 182
 180
 9
 8,578
2015191 181 179 180 178 180 181 (1)9,669 
2016            232
 251
 53
 8,443
2016231 249 238 226 228 222 (1)10,746 
2017              247
 117
 6,508
2017246 256 244 246 253 13,029 
20182018275 306 310 316 36 14,868 
20192019224 228 223 42 10,891 
20202020215 205 87 5,963 
20212021181 128 2,244 
          

 Total
 $1,309
 $175
  Total$2,008 $297 
Cumulative Net Paid Claims and Allocated Claim Adjustment Expenses are presented in the following table.
As of December 31Calendar Year
(In millions)
2012(1)
2013(1)(2)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021
Accident Year
2012$14 $80 $100 $109 $107 $109 $110 $111 $112 $115 
201338 102 122 128 132 135 139 140 141 
201456 124 142 152 157 163 165 166 
201530 99 130 146 158 166 164 
201664 146 174 183 196 208 
201753 152 185 207 215 
201855 176 205 236 
201944 104 142 
202028 79 
202113 
Total$1,479 
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented$529 
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2012
Liability for unallocated claim adjustment expenses for accident years presented
Total net liability for unpaid claim and claim adjustment expenses$540 
As of December 31Calendar Year
(In millions)
2012(1)(2)
 
2013(1)
 
2014(1)
 
2015(1)
 
2016(1)
 2017
Accident Year           
2008$3
 $14
 $10
 $10
 $11
 $11
20092
 (2) (4) (4) (4) (5)
201019
 36
 43
 46
 48
 49
201131
 84
 124
 129
 133
 134
201215
 81
 101
 110
 108
 110
2013  39
 103
 123
 129
 133
2014    56
 124
 143
 153
2015      30
 99
 131
2016        64
 147
2017          53
Total  $916
Net liability for unpaid claim and allocated claim adjustment expenses for the accident years presented  $393
Net liability for unpaid claim and claim adjustment expenses for accident years prior to 2008  5
Liability for unallocated claim adjustment expenses for accident years presented  8
Total net liability for unpaid claim and claim adjustment expenses  $406
Net strengthening or (releases) of prior accident year reserves is presented in the following table.
For the years ended December 31Calendar Year  For the years ended December 31Calendar Year
(In millions)
2012(1)(2)
 
2013(1)
 
2014(1)
 
2015(1)(3)
 
2016(1)(3)
 
2017(3)
 
Total (3)
(In millions)
2013(1)(2)
2014(1)
2015(1)
2016(1)
2017(1)
2018(1)
2019(1)
2020(1)
2021
Total(3)
Accident Year             Accident Year
2008$(3) $(4) $2
 $
 $(1) $1
 $(5)
2009
 (5) (11) 5
 (3) (1) (15)
2010(10) 9
 5
 (6) 6
 (1) 3
2011
 10
 
 4
 
 
 14
2012  1
 7
 8
 (7) 1
 10
2012$— $$$(7)$$$(1)$(2)$$
2013    15
 (8) 1
 1
 9
201315 (8)— (2)12 
2014      (2) (6) (7) (15)2014(2)(6)(7)(1)(3)(17)
2015        (10) (2) (12)2015(10)(2)(2)(10)
2016          19
 19
201618 (11)(12)(6)(9)
2017201710 (12)
2018201831 41 
20192019(5)(1)
20202020(10)(10)
(1) Data presented for these calendar years is required supplemental information, which is unaudited.
(2) Data presented for this calendar year is post-acquisition of Hardy.
(3) The amounts included in the loss reserve development tables above are presented at the year-end 20172021 foreign currency exchange rates for all periods presented to remove the effects of foreign currency exchange rate fluctuations between calendar years. The amounts included within the table on page 101 presenting the detail of the development recorded within the International segment include the impact of fluctuations in foreign currency exchange rates.

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The table below presents information about average historical claims duration as of December 31, 20172021 and is presented as required supplementary information, which is unaudited.
Average Annual Percentage Payout of Ultimate Net Incurred Claim and Allocated Claim Adjustment Expenses in Year:
12345678910
Specialty
Medical Professional Liability3.6 %18.3 %23.7 %18.2 %12.0 %8.3 %5.1 %2.8 %0.7 %1.0 %
Other Professional Liability and Management Liability6.7 %21.9 %21.1 %16.7 %9.9 %6.4 %4.3 %3.5 %1.7 %0.5 %
Surety(1)
14.1 %48.7 %18.9 %2.6 %1.1 %1.3 %— %0.4 %(0.8)%— %
Commercial
Commercial Auto26.7 %23.2 %18.0 %13.6 %10.1 %3.2 %1.5 %0.4 %— %0.3 %
General Liability4.1 %14.1 %18.0 %19.0 %13.5 %8.7 %5.6 %4.1 %2.2 %0.8 %
Workers' Compensation14.7 %21.7 %13.9 %9.5 %6.4 %2.7 %1.1 %1.5 %0.4 %0.5 %
International
International - Excluding Hardy19.0 %23.7 %10.8 %7.4 %6.1 %5.7 %6.8 %2.6 %1.6 %1.2 %
International - Hardy (2)
20.4 %36.1 %13.4 %6.9 %4.4 %3.9 %1.0 %0.6 %0.7 %
Average Annual Percentage Payout of Ultimate Net Incurred Claim and Allocated Claim Adjustment Expenses in Year:
 1 2 3 4 5 6 7 8 9 10 Total
Specialty                     
Medical Professional Liability3.3% 18.9% 23.5% 19.8% 12.7% 7.2% 4.5 % 3.3 % 3.6% 0.7% 97.5%
Other Professional Liability and Management Liability5.9% 21.0% 21.1% 17.3% 9.9% 6.0% 5.6 % 4.0 % 2.6% 1.5% 94.9%
Surety(1)
21.4% 38.4% 17.7% 7.5% 3.4% 2.0% (2.3)% (1.1)% % % 87.0%
                      
Commercial                     
Commercial Auto28.1% 22.9% 18.4% 14.1% 9.2% 3.4% 0.9 % 0.2 % 0.4% 0.7% 98.3%
General Liability4.9% 16.6% 20.7% 20.8% 15.2% 8.4% 4.2 % 2.5 % 1.5% 1.2% 96.0%
Workers' Compensation13.5% 21.2% 14.4% 10.7% 7.8% 5.5% 4.9 % 3.7 % 3.0% 3.2% 87.9%
                      
International                     
International - Excluding Hardy19.6% 25.6% 12.2% 6.8% 5.9% 4.7% 5.1 % 3.1 % 5.8% 0.4% 89.2%
International - Hardy (2)
24.7% 39.0% 14.3% 5.0% 2.8%           85.8%
(1) Due to the nature of the Surety business, average annual percentage payout of ultimate net incurred claim and allocated claim adjustment expenses has been calculated using only the payouts of mature accident years presented in the loss reserve development tables.
(2) Average historical claims duration for Hardy is presented prospectively beginning with the first full year subsequent to acquisition, 2013.

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A&EP Reserves
In 2010, Continental Casualty Company (CCC) together with several of the Company’s insurance subsidiaries completed a transaction with National Indemnity Company (NICO), a subsidiary of Berkshire Hathaway Inc., under which substantially all of the Company’s legacy A&EP liabilities were ceded to NICO through a Loss Portfolio Transfer (LPT).LPT. At the effective date of the transaction, the Company ceded approximately $1.6 billion of net A&EP claim and allocated claim adjustment expense reserves to NICO under a retroactive reinsurance agreement with an aggregate limit of $4 billion. The $1.6 billion of claim and allocated claim adjustment expense reserves ceded to NICO was net of $1.2 billion of ceded claim and allocated claim adjustment expense reserves under existing third-party reinsurance contracts. The NICO LPT aggregate reinsurance limit also covers credit risk on the existing third-party reinsurance related to these liabilities. The Company paid NICO a reinsurance premium of $2 billion and transferred to NICO billed third-party reinsurance receivables related to A&EP claims with a net book value of $215 million, resulting in total consideration of $2.2 billion.
SubsequentIn years subsequent to the effective date of the LPT, the Company recognized adverse prior year development on its A&EP reserves which resultedresulting in additional amounts ceded under the LPT. As a result, the cumulative amounts ceded under the LPT have exceeded the $2.2 billion consideration paid, resulting in the NICO LPT moving into a gain position, requiring retroactive reinsurance accounting. Under retroactive reinsurance accounting, this gain is deferred and only recognized in earnings in proportion to actual paid recoveries under the LPT. Over the life of the contract, there is no economic impact as long as any additional losses incurred are within the limit of the LPT. In a period in which the Company recognizes a change in the estimate of A&EP reserves that increases or decreases the amounts ceded under the LPT, the proportion of actual paid recoveries to total ceded losses is affected and the change in the deferred gain is recognized in earnings as if the revised estimate of ceded losses was available at the effective date of the LPT. The effect of the deferred retroactive reinsurance benefit is recorded in Insurance claims and policyholders' benefits in the Consolidated StatementStatements of Operations.
The following table presents the impact of the Loss Portfolio Transfer on the Consolidated Statements of Operations.
Years ended December 31
(In millions)202120202019
Additional amounts ceded under LPT:
Net A&EP adverse development before consideration of LPT$143 $125 $150 
Provision for uncollectible third-party reinsurance on A&EP(5)(25)(25)
Total additional amounts ceded under LPT138 100 125 
Retroactive reinsurance benefit recognized(107)(94)(107)
Pretax impact of deferred retroactive reinsurance$31 $$18 
Years ended December 31     
(In millions)2017 2016 2015
Net A&EP adverse development before consideration of LPT$60
 $200
 $150
Retroactive reinsurance benefit recognized(68) (107) (85)
Pretax impact of A&EP reserve development and the LPT$(8) $93
 $65
Based upon the Company's annual A&EP reserve review, netNet unfavorable prior year development of $60$143 million, $200$125 million and $150 million was recognized before consideration of cessions to the LPT for the years ended December 31, 2017, 20162021, 2020 and 2015.2019. The 2017 unfavorable development was driven by modestly higher anticipated payouts on claims from known sources of asbestos exposure. The 2016 unfavorable development was driven by an increase in anticipated future expenses associated with determination of coverage, higher anticipated payouts associated with a limited number of historical accounts having significant asbestos exposures and higher than expected severity on pollution claims. The 2015 unfavorable development was recorded to reflect a decrease in anticipated future reinsurance recoveries related to asbestos claims and higher than expected severity on pollution claims. While the unfavorable development in these years2021, 2020 and 2019 was ceded to NICO underprimarily driven by higher than anticipated defense and indemnity costs on known direct asbestos and environmental accounts and a reduction in estimated reinsurance recoverable. Additionally, in 2021, 2020 and 2019, the LPT, the Company’s Net income in the periods was negatively affected due to the applicationCompany released $5 million, $25 million and $25 million of retroactive reinsurance accounting.its provision for uncollectible third-party reinsurance.
As of December 31, 20172021 and 2016,2020, the cumulative amounts ceded under the LPT were $2.9$3.4 billion and $2.8$3.3 billion. The unrecognized deferred retroactive reinsurance benefit was $326$429 million and $334$398 million as of December 31, 20172021 and 2016.2020 and is included within Other liabilities on the Consolidated Balance Sheets.
NICO established a collateral trust account as security for its obligations to the Company. The fair value of the collateral trust account was $3.1 billion and $2.8 billion as of December 31, 2017 and 2016.2021. In addition, Berkshire Hathaway Inc. guaranteed the payment obligations of NICO up to the aggregate reinsurance limit as well as certain of NICO’s performance obligations under the trust agreement. NICO is responsible for claims handling and billing and collection from third-party reinsurers related to the majority of the Company’s A&EP claims.

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Note F. Legal Proceedings, Contingencies and Guarantees

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CNA 401(k) Plus Plan LitigationExcess Workers' Compensation LPT
In September 2016,On February 5, 2021, CCC completed a class action lawsuit was filed against CCC, Continental Assurance Company (CAC) (a formertransaction with Cavello Bay Reinsurance Limited (Cavello), a subsidiary of CCC), CNAF,Enstar Group Limited, under which certain legacy excess workers' compensation (EWC) liabilities were ceded to Cavello. Under the Investment Committeeterms of the CNA 401(k) Plus Plan (Plan),transaction, based on reserves in place as of January 1, 2020, the Company ceded approximately $690 million of net EWC claim and allocated claim adjustment expense reserves to Cavello under an LPT with an aggregate limit of $1 billion. The Northern Trust Company paid Cavello a reinsurance premium of $697 million, less claims paid between January 1, 2020 and John Does 1-10 (collectively Defendants)the closing date of the agreement of $64 million. After transaction costs, the Company recognized an after-tax loss of approximately $12 million in the Corporate & Other segment in the first quarter of 2021 related to the Plan. The complaint alleges that Defendants breached fiduciary dutiesEWC LPT.
As of December 31, 2021, the cumulative amount ceded under the EWC LPT was $690 million.
Cavello established a collateral trust account as security for its obligations to the Plan and caused prohibited transactions in violationCompany. The fair value of the Employee Retirement Income Security Actcollateral trust account was $634 million as of 1974 whenDecember 31, 2021.


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Life & Group Policyholder Reserves
The Company’s Life & Group segment includes its run-off long term care business as well as structured settlement obligations not funded by annuities related to certain property and casualty claimants. Long term care policies provide benefits for nursing homes, assisted living facilities and home health care subject to various daily and lifetime caps. Generally, policyholders must continue to make periodic premium payments to keep the Plan's Fixed Income Fund’s annuity contract with CAC was canceled. policy in force and the Company has the ability to increase policy premiums, subject to state regulatory approval.
The plaintiff alleges heCompany maintains both claim and claim adjustment expense reserves as well as future policy benefit reserves for policyholder benefits for the Life & Group segment. Claim and claim adjustment expense reserves consist of estimated reserves for long term care policyholders that are currently receiving benefits, including claims that have been incurred but are not yet reported. In developing the claim and claim adjustment expense reserve estimates for long term care policies, the Company’s actuaries perform a proposed classdetailed claim reserve review on an annual basis. The review analyzes the sufficiency of Plan participants who had investedexisting reserves for policyholders currently on claim and includes an evaluation of expected benefit utilization and claim duration. In addition, claim and claim adjustment expense reserves are also maintained for the structured settlement obligations. In developing the claim and claim adjustment expense reserve estimates for structured settlement obligations, the Company's actuaries review mortality experience on an annual basis. The Company’s recorded claim and claim adjustment expense reserves reflect management's best estimate after incorporating the results of the most recent reviews.
The Company completed its annual claim reserve reviews in the Fixed Income Fund sufferedthird quarter of 2021, 2020 and 2019 resulting in $40 million, $37 million and $56 million pretax reductions in long term care reserves primarily due to lower returnsclaim severity than anticipated in their Plan investments as a consequencethe reserve estimates. The Company's 2021 and 2020 annual claim reserve reviews also resulted in $2 million and $46 million pretax increases in the structured settlement claim reserves primarily due to lower discount rate assumptions and mortality assumption changes.
Future policy benefit reserves consist of active life reserves related to the Company’s long term care policies for policyholders that are not currently receiving benefits and represent the present value of expected future benefit payments and expenses less expected future premium. The determination of these alleged violationsreserves requires management to make estimates and seeks relief on behalfassumptions about expected investment and policyholder experience over the life of the putative class. contract. Since many of these contracts may be in force for several decades, these assumptions are subject to significant estimation risk.
The Plan trustees have provided noticeactuarial assumptions that management believes are subject to their fiduciary coverage insurance carriers.the most variability are morbidity, persistency, discount rates and anticipated future premium rate increases. Morbidity is the frequency and severity of injury, illness, sickness and diseases contracted. Persistency is the percentage of policies remaining in force and can be affected by policy lapses, benefit reductions and death. Discount rates are influenced by the investment yield on assets supporting long term care reserves which is subject to interest rate and market volatility and may also be affected by changes to the Internal Revenue Code. Future premium rate increases are generally subject to regulatory approval, and therefore the exact timing and size of the approved rate increases are unknown. As a result of this variability, the Company’s long term care reserves may be subject to material increases if actual experience develops adversely to the Company’s expectations.
Through mediation,Annually, in the plaintiff, Defendants andthird quarter, management assesses the Plan's fiduciary insurance carriers reached an agreement in principleadequacy of its long term care future policy benefit reserves by performing a GPV to settle this matter. Upon completion ofdetermine if there is a definitive settlement agreement, plaintiff and Defendants will propose a class settlement for court approval. Based onpremium deficiency. Under the agreement in principle,GPV, management has recorded itsestimates required reserves using best estimate assumptions as of the Company's probable lossdate of the assessment without provisions for adverse deviation. The GPV required reserves are then compared to the existing recorded reserves. If the GPV required reserves are greater than the existing recorded reserves, the existing assumptions are unlocked and does not believe thatfuture policy benefit reserves are increased to the ultimate resolution of this matter will have a material impact ongreater amount. Any such increase is reflected in the Company’s results of operations or financial position.
Small Business Premium Rate Adjustment
In 2016in the period in which the need for such adjustment is determined. If the GPV required reserves are less than the existing recorded reserves, assumptions remain locked in and 2017, the Company identified rating errors related to its multi-peril package product and workers' compensation policies within its Small Business unit and determined that it would voluntarily issue premium refunds along with interest on affected policies. After the rating errors were identified, written and earned premium have been reported net of any impact from the premium rate adjustments. For the year ended December 31, 2017, the Company recognized $36 million of adverse premium development and also increased Interest expense by $7 million for interest due to policyholders on the premium rate adjustments. For the year ended December 31, 2016, the Company recorded a charge which reduced Earned premium by $16 million.no adjustment is required.
The policyholder refundsGPV for the multi-peril package product were issuedlong term care future policy benefit reserves, performed in the third quarter of 2017. 2021, indicated that recorded reserves included a pretax margin of approximately $72 million.
The policyholder refunds for workers’ compensation policies are expected to be refunded in 2018. The estimated refund liability, including interest,GPV for the workers' compensation policies aslong term care future policy benefit reserves, performed in the third quarter of December 31, 2017 was $60 million. Any fines or penalties related to2020 and 2019, indicated a premium deficiency primarily driven by lower discount rate assumptions. Recognition of the foregoing are reasonably possible, but are not expected to be material to
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premium deficiency resulted in a $74 million and a $216 million pretax increase in policyholders' benefits reflected in the Company's results of operations or financial position.operations.
Other Litigation
Note F. Legal Proceedings, Contingencies and Guarantees
The Company is a party to other routinevarious claims and litigation incidental to its business, which, based on the facts and circumstances currently known, isare not material to the Company's results of operations or financial position.
GuaranteesData Breach-related Contingency
As of December 31, 2017 and 2016,previously disclosed, the Company had recorded liabilities of approximately $5 millionsustained a sophisticated cybersecurity attack in March 2021 involving ransomware. The Company’s investigation revealed that an unauthorized third party copied some personal information relating to certain current and former employees, contractor workers and their dependents and certain other persons, including some policyholders. In July 2021, we provided notifications to the impacted individuals and to regulators, in accordance with applicable law. The Company may be subject to subsequent investigations, fines or penalties, as well as other legal claims and actions, related to guaranteethe foregoing. The likelihood is reasonably possible, but the amount of such fines, penalties or costs, if any, cannot be estimated at this time.
Based on the information currently known, we do not believe that the March 2021 cybersecurity attack will have a material impact on our business, results of operations or financial condition, but no assurances can be given as we continue to assess the full impact from the incident, including costs, expenses and indemnification agreements and management believes that it is not likely that any future indemnity claims will be significantly greater than the amounts recorded.insurance coverage.
In the course of selling business entities and assets to third parties, the Company agreed to guarantee the performance of certain obligations of previously owned subsidiaries and to indemnify purchasers for losses arising out of breaches of representation and warranties with respect to the business entities or assets sold, including, in certain cases, losses arising from undisclosed liabilities or certain named litigation. Such guarantee and indemnification agreements in effect for sales of business entities, assets and third-party loans may include provisions that survive indefinitely. As of December 31, 2017, the aggregate amount related to quantifiable guarantees was $375 million and the aggregate amount related to quantifiable indemnification agreements was $252 million. In certain cases, should the Company be required to make payments under any such guarantee, it would have the right to seek reimbursement from an affiliate of a previously owned subsidiary.
In addition, the Company has agreed to provide indemnification to third-party purchasers for certain losses associated with sold business entities or assets that are not limited by a contractual monetary amount. As of December 31, 2017, the Company had outstanding unlimited indemnifications in connection with the sales of certain of its business entities or assets that included tax liabilities arising prior to a purchaser's ownership of an

entity or asset, defects in title at the time of sale, employee claims arising prior to closing and in some cases losses arising from certain litigation and undisclosed liabilities. Certain provisions of the indemnification agreements survive indefinitely, while others survive until the applicable statutes of limitation expire, or until the agreed-upon contract terms expire.Guarantees
The Company alsohas provided guarantees, if the primary obligor fails to perform, to holders of structured settlement annuities providedissued by a previously owned subsidiary. As of December 31, 2017,2021, the potential amount of future payments the Company could be required to pay under these guarantees was approximately $1.8$1.6 billion, which will be paid over the lifetime of the annuitants. The Company does not believe any payment is likely under these guarantees, as the Company is the beneficiary of a trust that must be maintained at a level that approximates the discounted reserves for these annuities.

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Note G. Reinsurance
The Company cedes insurance to reinsurers to limit its maximum loss, provide greater diversification of risk, minimize exposures on larger risks and to exit certain lines of business. The ceding of insurance does not discharge the primary liability of the Company. A credit exposure exists with respect to reinsurance ceded to the extent that any reinsurer is unable to meet its obligations. A collectibility exposure also exists to the extent that the reinsurer disputes the liabilities assumed under reinsurance agreements. Property and casualty reinsurance coverages are tailored to the specific risk characteristics of each product line and the Company's retained amount varies by type of coverage. Reinsurance contracts are purchased to protect specific lines of business such as property and workers' compensation. Corporate catastrophe reinsurance is also purchased for property and workers' compensation exposure. Currently, most reinsurance contracts are purchased on an excess of loss basis. The Company also utilizes facultative reinsurance in certain lines. In addition, the Company assumes reinsurance primarily through Hardy and as a member of various reinsurance pools and associations.
The following table presents the amounts receivable from reinsurers.
December 31   December 31
(In millions)2017 2016(In millions)20212020
Reinsurance receivables related to insurance reserves:   Reinsurance receivables related to insurance reserves:
Ceded claim and claim adjustment expenses$3,934
 $4,094
Ceded claim and claim adjustment expenses$4,969 $4,005 
Ceded future policy benefits230
 212
Ceded future policy benefits288 263 
Reinsurance receivables related to paid losses126
 147
Reinsurance receivables related to paid losses227 210 
Reinsurance receivables4,290
 4,453
Reinsurance receivables5,484 4,478 
Allowance for uncollectible reinsurance(29) (37)Allowance for uncollectible reinsurance(21)(21)
Reinsurance receivables, net of allowance for uncollectible reinsurance$4,261
 $4,416
Reinsurance receivables, net of allowance for uncollectible reinsurance$5,463 $4,457 
The Company has established an allowance for uncollectible voluntary reinsurance receivables relatedwhich relates to both amounts already billed on ceded paid losses as well as ceded reserves that will be billed when losses are paid in the future. The following table summarizes the outstanding amount of voluntary reinsurance receivables, gross of any collateral arrangements, by financial strength rating.
(In millions)December 31, 2021
A- to A++3,812 
B- to B++987
Insolvent3
Total voluntary reinsurance outstanding balance(1)
$4,802 
(1)    Expected credit risk.losses for legacy A&EP receivables are ceded to NICO and the reinsurance limit on the LPT has not been exhausted, therefore no allowance is recorded for these receivables and they are excluded from the table above. Refer to Note E to the Consolidated Financial Statements for information regarding the LPT. The Company reviews the allowance quarterly and adjusts the allowance as necessary to reflect changes in estimates of uncollectible balances. The allowance mayhas also be reduced by write-offs of reinsurance receivable balances.excluded receivables from involuntary pools.
The Company attempts to mitigate its credit risk related to reinsurance by entering into reinsurance arrangements with reinsurers that have credit ratings above certain levels and by obtaining collateral. On a limited basis, the Company may enter into reinsurance agreements with reinsurers that are not rated, primarily captive reinsurers. Receivables from captive reinsurers are backed by collateral arrangements and comprise the majority of the voluntary reinsurance receivables within the B- to B++ rating distribution in the table above. The primary methods of obtaining collateral are through reinsurance trusts, letters of credit and funds withheld balances. Such collateral, limited by the balance of open recoverables, was approximately $2.9$4.0 billion and $3.0$3.3 billion as of December 31, 20172021 and 2016.2020.
The Company's largest recoverables from a single reinsurer as of December 31, 2017,2021, including ceded unearned premium reserves, were approximately $2,100 million$1.8 billion from a subsidiarysubsidiaries of the Berkshire Hathaway Insurance Group, $395$612 million from Cavello Bay Reinsurance Limited and $425 million from the Gateway Rivers Insurance Company and $230 million from subsidiaries of Wilton Re.Company. These amounts are substantially collateralized.collateralized or otherwise secured. The recoverable
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from subsidiaries of the Berkshire Hathaway Insurance Group includes amounts related to third-party reinsurance for which NICO has assumed the credit risk under the terms of the LPT as discussed in Note E to the Consolidated Financial Statements.

The effects of reinsurance on earned premiums and written premiums are presented in the following tables.
(In millions)DirectAssumedCededNetAssumed/
Net %
2021 Earned Premiums
Property and casualty$12,554 $240 $5,110 $7,684 3.1 %
Long term care443 48 — 491 9.8 %
Total earned premiums$12,997 $288 $5,110 $8,175 3.5 %
2020 Earned Premiums
Property and casualty$11,547 $238 $4,640 $7,145 3.3 %
Long term care454 50 — 504 9.9 %
Total earned premiums$12,001 $288 $4,640 $7,649 3.8 %
2019 Earned Premiums
Property and casualty$11,021 $288 $4,401 $6,908 4.2 %
Long term care470 50 — 520 9.6 %
Total earned premiums$11,491 $338 $4,401 $7,428 4.6 %
(In millions)Direct Assumed Ceded Net 
Assumed/
Net %
2017 Earned Premiums         
Property and casualty$10,447
 $317
 $4,315
 $6,449
 4.9%
Long term care489
 50
 
 539
 9.3%
Total earned premiums$10,936
 $367
 $4,315
 $6,988
 5.3%
          
2016 Earned Premiums         
Property and casualty$10,400
 $258
 $4,270
 $6,388
 4.0%
Long term care486
 50
 
 536
 9.3%
Total earned premiums$10,886
 $308
 $4,270
 $6,924
 4.4%
          
2015 Earned Premiums         
Property and casualty$9,853
 $274
 $3,754
 $6,373
 4.3%
Long term care498
 50
 
 548
 9.1%
Total earned premiums$10,351
 $324
 $3,754
 $6,921
 4.7%
(In millions)Direct Assumed Ceded Net 
Assumed/
Net %
(In millions)DirectAssumedCededNetAssumed/
Net %
2017 Written Premiums         
2021 Written Premiums2021 Written Premiums
Property and casualty$10,655
 $327
 $4,449
 $6,533
 5.0%Property and casualty$13,150 $255 $5,485 $7,920 3.2 %
Long term care486
 50
 
 536
 9.3%Long term care437 48 — 485 9.9 %
Total written premiums$11,141
 $377
 $4,449
 $7,069
 5.3%Total written premiums$13,587 $303 $5,485 $8,405 3.6 %
         
2016 Written Premiums         
2020 Written Premiums2020 Written Premiums
Property and casualty$10,451
 $245
 $4,255
 $6,441
 3.8%Property and casualty$12,168 $229 $4,832 $7,565 3.0 %
Long term care495
 52
 
 547
 9.5%Long term care444 50 — 494 10.1 %
Total written premiums$10,946
 $297
 $4,255
 $6,988
 4.3%Total written premiums$12,612 $279 $4,832 $8,059 3.5 %
         
2015 Written Premiums         
2019 Written Premiums2019 Written Premiums
Property and casualty$9,852
 $270
 $3,702
 $6,420
 4.2%Property and casualty$11,421 $281 $4,569 $7,133 3.9 %
Long term care493
 49
 
 542
 9.0%Long term care473 50 — 523 9.6 %
Total written premiums$10,345
 $319
 $3,702
 $6,962
 4.6%Total written premiums$11,894 $331 $4,569 $7,656 4.3 %
Included in the direct and ceded earned premiums for the years ended December 31, 2017, 20162021, 2020 and 20152019 are $3,864$3,638 million, $3,865$3,543 million and $3,344$3,578 million related to property business that is 100% reinsured under a significant third-party captive program. The third-party captives that participate in this program are affiliated with the non-insurance company policyholders, therefore this program provides a means for the policyholders to self-insure this property risk. The Company receives and retains a ceding commission.
Long term care premiums are from long durationlong-duration contracts; property and casualty premiums are from short durationshort-duration contracts.
Insurance claims and policyholders' benefits reported on the Consolidated Statements of Operations are net of estimated reinsurance recoveries of $3,085$3,058 million, $3,016$3,158 million and $2,601$2,733 million for the years ended December 31, 2017, 20162021, 2020 and 2015,2019, including $2,541$2,003 million, $2,621$2,375 million and $2,282$2,080 million, respectively, related to the significant third-party captive program discussed above.

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Note H. Debt
Debt is composed of the following long term obligations.
December 31   
(In millions)2017 2016
Short term debt:   
Senior notes of CNAF, 6.950%, face amount of $150, due January 15, 2018$150
 $
    
Long term debt:   
Senior notes of CNAF:   
6.950%, face amount of $150, due January 15, 2018
 150
7.350%, face amount of $350, due November 15, 2019
 349
5.875%, face amount of $500, due August 15, 2020498
 498
5.750%, face amount of $400, due August 15, 2021398
 398
3.950%, face amount of $550, due May 15, 2024547
 546
4.500%, face amount of $500, due March 1, 2026498
 498
3.450%, face amount of $500, due August 15, 2027495
 
Debenture of CNAF, 7.250%, face amount of $243, due November 15, 2023242
 241
Subordinated variable rate debt of Hardy, face amount of $30, due September 15, 203630
 30
Total long term debt2,708
 2,710
Total debt$2,858
 $2,710
December 31
(In millions)20212020
Senior notes of CNAF:
3.950%, face amount of $550, due May 15, 2024549 548 
4.500%, face amount of $500, due March 1, 2026499 499 
3.450%, face amount of $500, due August 15, 2027497 496 
3.900%, face amount of $500, due May 1, 2029496 496 
2.050%, face amount of $500, due August 15, 2030495 495 
Debenture of CNAF, 7.250%, face amount of $243, due November 15, 2023243 242 
Total$2,779 $2,776 
CCC is a member of the FHLBC.Federal Home Loan Bank of Chicago (FHLBC). FHLBC membership provides participants with access to additional sources of liquidity through various programs and services. As a requirement of membership in the FHLBC, CCC held $5 million of FHLBC stock as of December 31, 20172021 giving it immediate access to approximately $111$106 million of additional liquidity. As of December 31, 20172021 and 2016,2020, CCC had no outstanding borrowings from the FHLBC.
During 2015,2019, the Company entered intoamended and restated its existing credit agreement with a syndicate of banks. The agreement provides a five-year $250 million senior unsecured revolving credit facility with a syndicate of banks which mayis intended to be used for general corporate purposes. At the Company's election, the commitments under the credit agreement may be increased from time to time up to an additional aggregate amount of $100 million.million, and 2 one-year extensions are available prior to any anniversary of the closing date, each subject to applicable consents. Under the agreement, the Company is required to pay a facility fee which will adjust automatically in the event of a change in the Company's financial ratings. The credit agreement includes several covenants, including maintenance of a minimum consolidated net worth and a definedspecified ratio of consolidated indebtedness to consolidated total capitalization. The minimum consolidated net worth, as defined, as ofat December 31, 2017,2021, was $8.7 billion.  As of December 31, 20172021 and 2016,2020, the Company had no outstanding borrowings under the credit agreements.agreement.
The Company's debt obligations contain customary covenants for investment grade issuers. The Company was in compliance with all covenants as of and for the years ended December 31, 20172021 and 2016.2020.
The combined aggregate maturities for debt as of December 31, 20172021 are presented in the following table.
(In millions)
2022$— 
2023243 
2024550 
2025— 
2026500 
Thereafter1,500 
Less: discount(14)
Total$2,779 
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(In millions) 
2018$150
2019
2020500
2021400
2022
Thereafter1,823
Less discount(15)
Total$2,858


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Note I. Benefit Plans
Pension and Postretirement Health Care Benefit Plans
CNA sponsors noncontributory defined benefit pension plans, primarily through the CNA Retirement Plan, covering certain eligible employees. These plans are closed to new entrants. CNA's funding policy for defined benefit pension plans is to make contributions in accordance with applicable governmental regulatory requirements with consideration of the funded status of the plans.
Effective January 1, 2000, the CNA Retirement Plan was closed to new participants. Existing participants at that time were given a choice to either continue to accrue benefits under the CNA Retirement Plan or to cease accruals effective December 31, 1999. Employees who chose to continue to accrue benefits under the plan received benefits in accordance with plan provisions through June 30, 2015 as discussed further below. EmployeesParticipants who elected to cease accruals effective December 31, 1999 received the present value of their accrued benefit in an accrued pension account that is credited with interest based on the annual rate of interest on 30-year Treasury securities. These employees also receive certain enhanced employer contributions in the CNA 401(k) Plus401k Plan.
Effective June 30, 2015, the Company eliminated future benefit accruals associated with the CNA Retirement Plan. Participants continuing to accrue benefits under the CNA Retirement Plan atup until that time weredate are entitled to an accrued benefit payable based on their eligible compensation and accrued service through June 30, 2015. These employeesaffected participants now also began receivingreceive enhanced employer contributions in the CNA 401(k) Plus401k Plan similar to employeesparticipants who elected to cease accruals effective December 31, 1999. Employees who elected to cease accruals effective December 31, 1999 were not affected by this curtailment. This curtailment resulted in a $55 million decrease in the CNA Retirement Plan benefit obligation liability and a reduction of the unrecognized actuarial losses included in AOCI.
In 2016, the CNA Retirement Plan paid $88 million to settle its obligation to certain retirees through the purchase of a group annuity contract from a third party insurance company. This transaction reduced the plan’s projected benefit obligation by $86 million.
CNA provides certain postretirement health care benefits to eligible retired employees, their covered dependents and their beneficiaries primarily through the CNA Health and Group Benefits Program. These postretirement benefits have largely been eliminated for active employees.

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The following table presents a reconciliation of benefit obligations and plan assets.
Pension BenefitsPostretirement Benefits
(In millions)2021202020212020
Benefit obligation as of January 1$2,769 $2,661 $$
Changes in benefit obligation:
Interest cost62 80 — — 
Participants' contributions— — 
Actuarial (gain) loss(84)205 
Benefits paid(182)(173)(5)(5)
Foreign currency translation and other(2)— — 
Settlements(2)(7)— — 
Benefit obligation as of December 312,561 2,769 
Fair value of plan assets as of January 12,420 2,285 — — 
Change in plan assets:
Actual return on plan assets332 295 — — 
Company contributions10 16 
Participants' contributions— — 
Benefits paid(182)(173)(5)(5)
Foreign currency translation and other(1)— — 
Settlements(2)(7)— — 
Fair value of plan assets as of December 312,577 2,420 — — 
Funded status$16 $(349)$(6)$(7)
Amounts recognized on the Consolidated Balance Sheets as of December 31:
Other assets$77 $$— $— 
Other liabilities(61)(351)(6)(7)
Net amount recognized$16 $(349)$(6)$(7)
Amounts recognized in Accumulated other comprehensive income, not yet recognized in net periodic cost (benefit):
Net actuarial (gain) loss$763 $1,073 $$— 
Net amount recognized$763 $1,073 $$— 
 Pension Benefits Postretirement Benefits
(In millions)2017 2016 2017 2016
Benefit obligation as of January 1$2,729
 $2,821
 $15
 $23
Changes in benefit obligation:       
Service cost
 
 
 
Interest cost103
 113
 
 
Participants' contributions
 
 4
 4
Plan amendments
 
 
 
Actuarial (gain) loss99
 68
 (1) (6)
Benefits paid(170) (173) (7) (7)
Foreign currency translation and other10
 (14) 
 1
Settlements(22) (86) 
 
Benefit obligation as of December 312,749
 2,729

11

15
Fair value of plan assets as of January 12,193
 2,267
 
 
Change in plan assets:       
Actual return on plan assets221
 193
 
 
Company contributions29
 9
 3
 3
Participants' contributions
 
 4
 4
Benefits paid(170) (173) (7) (7)
Foreign currency translation and other10
 (15) 
 
Settlements(22) (88) 
 
Fair value of plan assets as of December 312,261
 2,193
 
 
Funded status$(488) $(536) $(11) $(15)
Amounts recognized on the Consolidated Balance Sheets as of December 31:       
Other assets$4
 $4
 $
 $
Other liabilities(492) (540) (11) (15)
Net amount recognized$(488) $(536) $(11) $(15)
Amounts recognized in Accumulated other comprehensive income, not yet recognized in net periodic cost (benefit):       
Prior service credit$
 $
 $(2) $(4)
Net actuarial loss987
 999
 (4) (3)
Net amount recognized$987
 $999
 $(6) $(7)
The accumulated benefit obligation for all defined benefit pension plans was $2,749$2,561 million and $2,729$2,769 million as of December 31, 20172021 and 2016.2020. Changes for the year ended December 31, 2021 include actuarial gains of $(84) million driven by investment returns and changes in the discount rate used to determine the defined benefit pension obligations. Changes for the year ended December 31, 2020 include actuarial losses of $205 million primarily driven by changes in the discount rate used to determine defined benefit pension obligations.

For pension plans with a benefit obligation in excess of plan assets, the benefit obligation was $61 million and the aggregate plan assets were $0 at December 31, 2021.

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The components of net periodic pension cost (benefit) are presented in the following table.
Years ended December 31
(In millions)202120202019
Net periodic pension cost (benefit)
Interest cost on projected benefit obligation$62 $80 $100 
Expected return on plan assets(154)(155)(142)
Amortization of net actuarial (gain) loss46 45 39 
Settlement loss— 
Total net periodic pension cost (benefit)$(45)$(27)$(3)
Years ended December 31     
(In millions)2017 2016 2015
Pension cost (benefit)     
Service cost$
 $
 $4
Interest cost on projected benefit obligation103
 113
 112
Expected return on plan assets(154) (160) (174)
Amortization of net actuarial loss35
 37
 34
Settlement loss9
 
 
Net periodic pension cost (benefit)$(7) $(10) $(24)
      
Postretirement cost (benefit)     
Interest cost on projected benefit obligation$
 $
 $1
Amortization of prior service credit(2) (2) (3)
Amortization of net actuarial loss
 
 1
Net periodic postretirement cost (benefit)$(2) $(2) $(1)
The following table indicates the line items in which the non-service cost (benefit) is presented in the Consolidated Statements of Operations.
Years ended December 31
(In millions)202120202019
Non-Service Cost (benefit):
Insurance claims and policyholder's benefits$(13)$(8)$(1)
Other operating expenses(32)(19)(2)
Total net periodic pension cost (benefit)$(45)$(27)$(3)
The amounts recognized in Other comprehensive income are presented in the following table.
Years ended December 31
(In millions)202120202019
Pension and postretirement benefits
Amounts arising during the period$262 $(67)$(112)
Settlement— 
Reclassification adjustment relating to prior service credit— — — 
Reclassification adjustment relating to actuarial loss46 45 39 
Total increase (decrease) in Other comprehensive income$309 $(19)$(73)
Years ended December 31     
(In millions)2017 2016 2015
Pension and postretirement benefits     
Amounts arising during the period$(31) $(29) $(111)
Curtailment and other
 
 56
Settlement9
 (2) 
Reclassification adjustment relating to prior service credit(2) (2) (3)
Reclassification adjustment relating to actuarial loss35
 37
 35
Total increase (decrease) in Other comprehensive income$11
 $4
 $(23)
The table below presents the estimated amounts to be recognized from AOCI into net periodic cost (benefit) during 2018.
(In millions)
Pension
Benefits
 Postretirement Benefits
Amortization of prior service credit$
 $(2)
Amortization of net actuarial loss36
 
Total estimated amounts to be recognized$36
 $(2)
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Actuarial assumptions used for the CNA Retirement Plan and CNA Health and Group Benefits Program to determine benefit obligations are presented in the following table. The interest crediting rate is the weighted average interest rate applied to the individual pension balances for employees who elected to cease accruals effective December 31, 1999.
December 312017 2016December 3120212020
Pension benefits   Pension benefits
Discount rate3.550% 3.950%Discount rate2.750 %2.350 %
Expected long term rate of return7.500
 7.500
Interest crediting rateInterest crediting rate3.000 3.000 
Postretirement benefits   Postretirement benefits
Discount rate2.750% 2.750%Discount rate2.250 %1.600 %
Actuarial assumptions used for the CNA Retirement Plan and CNA Health and Group Benefits Program to determine net cost or benefit are presented in the following table.
Years ended December 312017 2016 2015Years ended December 31202120202019
Pension benefits     Pension benefits
Discount rate3.950% 4.150% 3.850%/4.000%
Discount rate2.350 %3.150 %4.250 %
Expected long term rate of return7.500
 7.500
 7.500
Expected long term rate of return6.750 7.250 7.500 
Rate of compensation increasesN/A
 N/A
 3.920
Interest crediting rateInterest crediting rate3.000 5.000 5.000 
Postretirement benefits     Postretirement benefits
Discount rate2.750% 2.750% 2.500%Discount rate1.600 %2.300 %3.550 %
To determine the discount rate assumption as of the year-end measurement date for the CNA Retirement Plan and CNA Health and Group Benefits Program, the Company considered the estimated timing of plan benefit payments and available yields on high quality fixed income debt securities. For this purpose, high quality is considered a rating of Aa or better by Moody's Investors Service, Inc. (Moody's) or a rating of AA or better from S&P.Standard & Poor's (S&P). The Company reviewed several yield curves constructed using the cash flow characteristics of the plans as well as bond indices as of the measurement date. The trend of those data points was also considered.
In determining the expected long term rate of return on plan assets assumption for the CNA Retirement Plan, CNA considered the historical performance of the benefit plan investment portfolio as well as long term market return expectations based on the investment mix of the portfolio and the expected investment horizon.
The CNA Health and Group Benefits Program has limited its share of the health care trend rate to a cost-of-living adjustment of 4% per year. For all participants, the employer subsidy on health care costs will not increase by more than 4% per year. As a result, the assumed health care cost trend rate used in measuring the accumulated postretirement benefit obligation for the CNA Health and Group Benefits Program was 4% per year in 2017, 20162021, 2020 and 2015.2019.
CNA employs a total return approach whereby a mix of equity, limited partnerships and fixed maturity securities are used to maximize the long term return of retirement plan assets for a prudent level of risk and to manage cash flows according to plan requirements. The target allocation of plan assets is 40% to 60% invested in equity securities and limited partnerships, with the remainder primarily invested in fixed maturity securities. Alternative investments, including limited partnerships, are used to enhance risk adjusted long term returns while improving portfolio diversification. The intent of this strategy is to minimize the Company's expense related to funding the plan by generating investment returns that exceed the growth of the plan liabilities over the long run. Risk tolerance is established after careful consideration of the plan liabilities, plan funded status and corporate financial conditions.
As of December 31, 2017,2021, the Plan had committed approximately $100$160 million to future capital calls from various third-party limited partnership investments in exchange for an ownership interest in the related partnerships. Derivatives may be used to gain market exposure in an efficient and timely manner. Investment risk is measured and monitored on an ongoing basis through annual liability measurements, periodic asset/liability studies and quarterly investment portfolio reviews.

116

Pension plan assets measured at fair value on a recurring basis as well as cash are presented in the following tables.
December 31, 2017        
(In millions) Level 1 Level 2 Level 3 Total
Assets        
Fixed maturity securities:        
Corporate bonds and other $
 $522
 $10
 $532
States, municipalities and political subdivisions 
 62
 
 62
Asset-backed 
 180
 
 180
Total fixed maturity securities 
 764
 10
 774
Equity securities 405
 122
 
 527
Short term investments 23
 11
 
 34
Other assets 
 9
 
 9
Cash 13
 
 
 13
Total assets measured at fair value $441
 $906
 $10
 1,357
Total limited partnerships measured at net asset value (1)
       904
Total plan assets       $2,261
December 31, 2016        
December 31, 2021December 31, 2021
(In millions) Level 1 Level 2 Level 3 Total(In millions)Level 1Level 2Level 3Total
Assets        Assets
Fixed maturity securities:        Fixed maturity securities:
Corporate bonds and other $
 $500
 $10
 $510
Corporate bonds and other$— $645 $$653 
States, municipalities and political subdivisions 
 63
 
 63
States, municipalities and political subdivisions— 30 — 30 
Asset-backed 
 179
 
 179
Asset-backed— 110 — 110 
Total fixed maturity securities 
 742
 10
 752
Total fixed maturity securities— 785 793 
Equity securities 363
 105
 
 468
Equity securities732 141 — 873 
Short term investments 11
 35
 
 46
Short term investments45 — — 45 
Other assets 
 37
 
 37
Other assets— — 
Cash 14
 
 
 14
Cash— — — — 
Total assets measured at fair value $388
 $919
 $10
 1,317
Total assets measured at fair value$777 $934 $1,719 
Total equity securities measured at net asset value(1)
Total equity securities measured at net asset value(1)
20 
Total limited partnerships measured at net asset value (1)
 

 

 

 876
Total limited partnerships measured at net asset value (1)
838 
Total plan assets 
 
 
 $2,193
TotalTotal$2,577 
December 31, 2020
(In millions)Level 1Level 2Level 3Total
Assets
Fixed maturity securities:
Corporate bonds and other$— $643 $$652 
States, municipalities and political subdivisions— 32 — 32 
Asset-backed— 98 — 98 
Total fixed maturity securities— 773 782 
Equity securities666 137 — 803 
Short term investments20 38 — 58 
Other assets— — 
Cash13 — — 13 
Total assets measured at fair value$699 $956 $1,664 
Total limited partnerships measured at net asset value (1)
756 
Total$2,420 
(1) Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table for these investments are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the Plan's Statement of Financial Position.
The limited partnership investments held within the plan are recorded at fair value, which represents the plan's share of net asset value of each partnership, as determined by theeach limited partnership's general partner. Limited partnerships comprising 85%65% and 86%75% of the carrying value as of December 31, 20172021 and 20162020 employ hedge fund strategies that generate returns through investing in marketable securities in the public fixed income and equity markets and the remainder were primarily invested in private debt and equity. Within hedge fund strategies, approximately 62%76% were equity related, 32%19% pursued a multi-strategy approach and 6%5% were focused on distressed investments as of December 31, 2017.2021.
For a discussion of the fair value levels and the valuation methodologies used to measure fixed maturity securities, equities, derivatives and short term investments, see Note C to the Consolidated Financial Statements.

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The table below presents the estimated future minimum benefit payments to participants as of December��December 31, 2017.2021.
(In millions)Pension Benefits Postretirement Benefits
2018$183
 $2
2019175
 2
2020176
 2
2021175
 1
2022177
 1
2023-2027871
 2
(In millions)Pension BenefitsPostretirement Benefits
2022$182 $
2023179 
2024177 
2025175 — 
2026173 — 
2027-2031798 
In 2018,2022, CNA expects to contribute $18$5 million to its pension plans and $2$1 million to its postretirement health care benefit plans.
Savings Plans
CNA sponsors savings plans, which are generally contributory plans that allow most employees to contribute a maximum of 50% of their eligible compensation, subject to certain limitations prescribed by the IRS. The Company contributes matching amounts to participants amounting to 70%100% of the first 6% (35% of the first 6% in the first year of employment) of eligible compensation contributed by the employee. MatchingIn addition, eligible employees also receive a Company contribution of 5% of their eligible compensation, referred to as a basic contribution. Company contributions vest ratably over participants first five years of service.
Eligible employees also receive a Company contribution of 3% or 5% of their eligible compensation, depending on their age. In addition, these employees are eligible to receive additional discretionary contributions of up to 2% of eligible compensation and an additional Company match of up to 80% of the first 6% of eligible compensation contributed by the employee. These additional contributions are made at the discretion of management and are contributed to participant accounts in the first quarter of the year following management's determination of the discretionary amounts. Matching contributions vest ratably over participants first five years of service.
Benefit expense for the Company's savings plans was $76$65 million, $75$70 million and $71$71 million for the years ended December 31, 2017, 20162021, 2020 and 2015.2019.



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Note J. Stock-Based Compensation
The current CNAF Incentive Compensation Plan (the Plan), as amended and restated on January 1, 2010, as amended, authorizes the grant of stock-based compensation to certain management personnel for up to 1116 million shares of CNAF common stock. The Plan currently provides for awards of stock options, stock appreciation rights (SARs), restricted shares, restricted stock units (RSUs), performance-based RSUs and performance share units. These grants to employees are not designed to be spring-loaded. The number of shares available for the granting of stock-based compensation under the Plan as of December 31, 20172021 was approximately 2.85.6 million.
The Company recorded stock-based compensation expense related to the Plan of $36 million, $36 million and $14 million for the years ended December 31, 2017, 2016 and 2015. The related income tax benefit recognized was $18 million, $12 million and $5 million for the years ended December 31, 2017, 2016, and 2015. The compensation cost not yet recognized was $41 million, and the weighted average period over which it is expected to be recognized is 1.8 years as of December 31, 2017.
Equity based compensation that is not fully vested prior to termination is generally forfeited upon termination, except in cases of retirement, death or disability, and as otherwise provided by contractual obligations.
Share Awards
The fair value of share awards is based on the market valueSubstantially all of the Company's common stock as of the date of grant. Share awards currently grantedstock-based compensation is awarded under the Plan include RSUs, performance-based RSUs and performance share units. Generally, RSU's vest over a two or three-year service period following the date of grant. Performance-based RSUs generally become payable within a range of 0% to 100% of the number of shares initially granted based upon the attainment of specific annual performance goals and vest ratably over a four-year service period following the date of grant. As of December 31, 2017 the Company does not have any outstanding performance-based RSUs.
In 2016, CNA adopted the Annual Performance Share Plan (PSP). The PSP provides officers with an opportunity to earn an award based upon attainment of specific performance goals achieved over a one-year performance period. Awards are granted in the form of performance share units at the beginning of each performance year and are generally subject to a two-year cliff vesting period after the Company’s annual performance has been determined. Prior to the PSP, CNA issued performance share units under the Long Term Incentive Plan (LTI Plan). The LTI Plan had a three-year performance period and continued to have outstanding awards through 2017. In both plans, the performance share units become payable within a range of 0% to 200% of the number of performance share units initially granted.
In 2016, CNA granted Special Supplemental Equity Awards (SSE).Additionally, the Company may grant RSUs under the Plan in certain circumstances. These awards generally vest over a one to three-year service period following the grant date.
Stock-based compensation that is not fully vested prior to termination is generally forfeited upon termination, except in cases of retirement, death or disability, and as otherwise provided by contractual obligations. The fair value of stock-based compensation awards consistis based on the market value of restrictedthe Company's common stock units subjectas of the date of grant, except for awards made to both Company performance in 2016 and service-based vesting up to two years.foreign participants, which is based on the current market value of the Company’s common stock. Payments made under the PSP and SSE are made entirely in shares of common stock granted under the Plan, except for awards made to foreign participants, which are paid in cash.
The Company recorded stock-based compensation expense related to the Plan of $32 million,$37 million and $34 million for the years ended December 31, 2021, 2020 and 2019. The related income tax benefit recognized was $6 million, $6 million and $8 million for the years ended December 31, 2021, 2020 and 2019. The compensation cost not yet recognized was $41 million, and the weighted average period over which it is expected to be recognized is 1.7 years as of December 31, 2021.
The total fair value of RSUs and performance shares that vested during the years ended December 31, 2021, 2020 and 2019 was $36 million, $35 million and $31 million, respectively.
The weighted average grant date fair value for RSUs and performance shares granted during the years ended December 31, 2021, 2020 and 2019 was $45.82, $34.36 and $43.86, respectively.
The following table presents activity for non-vested RSUs, performance-based RSUs and performance share units under the Plan in 2017.2021.
Number of AwardsWeighted Average Grant Date Fair Value
Balance as of January 1, 20212,439,141 $40.56 
Awards granted1,044,772 45.82 
Awards vested(789,495)46.13 
Awards forfeited, canceled or expired(355,881)40.19 
Performance-based adjustment37,061 43.70 
Balance as of December 31, 20212,375,598 41.21 
119

Number of Awards
Weighted-Average Grant Date Fair Value
Balance as of January 1, 20172,131,782

$33.28
Awards granted1,010,741

44.20
Awards vested(930,616)
33.31
Awards forfeited, canceled or expired(290,296)
36.20
Performance-based adjustment149,126

44.07
Balance as of December 31, 20172,070,737

$38.92


Table of Contents
Note K. Other Intangible Assets
Other intangible assets are presented in the following table.
December 31 2017 2016December 3120212020
(In millions)Economic Useful Life Carrying Amount Accumulated Amortization Carrying Amount Accumulated Amortization(In millions)Economic Useful LifeGross Carrying AmountAccumulated AmortizationGross Carrying AmountAccumulated Amortization
Finite-lived intangible assets:        Finite-lived intangible assets:
Trade name8 years $7
 $5
 $6
 $3
Trade name8 years$$$
Distribution channel15 years 11
 4
 10
 3
Distribution channel15 years11 11 
Total finite-lived intangible assets 18
 9
 16
 6
Total finite-lived intangible assets18 14 18 13 
Indefinite-lived intangible assets:        Indefinite-lived intangible assets:
Syndicate capacity 47
   43
  Syndicate capacity47 48 
Agency force 16
   16
  Agency force16 16 
Total indefinite-lived intangible assets 63
   59
  Total indefinite-lived intangible assets63 64 
Total other intangible assets $81
 $9
 $75
 $6
Total other intangible assets$81 $14 $82 $13 
The Company's other intangible assets primarily relate to the purchase of Hardy, and the amortization of the finite-lived intangible assets is included in the Statement of Operations for the International segment. For the years ended December 31, 2017, 2016 and 2015 amortizationAmortization expense of $2 million, $1 million and $1 million was included in Other operating expenses.expenses for each of the years ended December 31, 2021, 2020 and 2019. The gross carrying amounts and accumulated amortization in the table above may change from period to period as a result of foreign currency translation. Estimated future annual amortization expense for other intangible assets is $2 million in years 2018 and 2019 and $1 million in each of the years 20202022 through 2022.2026.

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Note L. Operating Leases
The Company occupies office facilities underTotal lease agreements that expire at various dates. In addition, data processing, officeexpense was $57 million, $57 million and transportation equipment is leased under agreements that expire at various dates. Most leases contain renewal options that provide for rent increases based on prevailing market conditions. Lease expense$55 million for the years ended December 31, 2017, 20162021, 2020 and 2015 was $662019. Total lease expense includes operating lease expense of $38 million, $60$38 million and $46 million.$37 million and variable lease expense of $19 million, $19 million and $18 million for the years ended December 31, 2021, 2020 and 2019. Cash paid for amounts included in operating lease liabilities was $44 million, $41 million and $34 million for the years ended December 31, 2021, 2020 and 2019. Operating lease ROU assets obtained in exchange for lease obligations was $11 million, $6 million and $12 million for the years ended December 31, 2021, 2020 and 2019.
The following table belowpresents operating lease ROU assets and lease liabilities.
(In millions)December 31, 2021December 31, 2020
Operating lease ROU assets$175 $199 
Operating lease liabilities248 279 
The following table presents the expected future minimummaturities of operating lease payments to be made under non-cancelableliabilities
(In millions)December 31, 2021
2022$42 
202337 
202430 
202525 
202622 
Thereafter141 
Total lease payments297 
Less: Discount(49)
Total operating lease liabilities$248 
The following table presents the weighted average remaining lease term for operating leases asand weighted average discount rate used in calculating operating lease ROU assets.
December 31, 2021December 31, 2020
Weighted average remaining lease term9.8 years10.3 years
Weighted average discount rate3.4 %3.4 %

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Table of December 31, 2017.Contents
(In millions)Future Minimum Lease Payments
2018$40
201935
202037
202138
202235
Thereafter232
Total$417


Note M. Stockholders’ Equity and Statutory Accounting Practices
Common Stock Dividends
There are no restrictions on the retained earnings or net income of CNAF with regard to payment of dividends to its stockholders. However, given the holding company nature of CNAF, its ability to pay a dividend is significantly dependent on the receipt of dividends from its subsidiaries, particularly CCC, which directly or indirectly owns the vast majority of all significant subsidiaries. See the Statutory Accounting Practices section below for a discussion of the regulatory restrictions on CCC's availability to pay dividends.
CNAF's ability to pay dividends ismay be indirectly limited by the minimum consolidated net worth covenant in the Company's line of credit agreement. See Note H to the Consolidated Financial Statements for further discussion of the Company's debt obligations.
Statutory Accounting Practices
CNAF’s insurance subsidiaries are domiciled in various jurisdictions. These subsidiaries prepare statutory financial statements in accordance with accounting practices prescribed or permitted by the respective jurisdictions’ insurance regulators. Domestic prescribed statutory accounting practices are set forth in a variety of publications of the National Association of Insurance Commissioners (NAIC) as well as state laws, regulations and general administrative rules. These statutory accounting principles vary in certain respects from GAAP. In converting from statutory accounting principles to GAAP, the more significant adjustments include deferral of policy acquisition costs and the inclusion of net unrealized holding gains or losses in stockholders’ equity relating to certain fixed maturity securities.
The Company has a prescribed practice as it relates to the accounting under Statement of Statutory Accounting Principles No. 62R, (SSAP No. 62R), Property and Casualty Reinsurance, paragraphs 6788 and 6889 in conjunction with the 2010 LPT with NICO which is further discussed in Note E.E to the Consolidated Financial Statements.  The prescribed practice allows the Company to aggregate all third partythird-party A&EP reinsurance balances administered by NICO in Schedule F and to utilize the LPT as collateral for the underlying third partythird-party reinsurance balances for purposes of calculating the statutory reinsurance penalty. This prescribed practice increased statutory capital and surplus by $63$67 million and $67$91 million at December 31, 20172021 and 2016.
The 2015 long term care premium deficiency discussed in Note A was recorded on a GAAP basis. There was no premium deficiency for statutory accounting purposes. Statutory accounting principles requires the use of prescribed discount rates in calculating the reserves for long term care future policy benefits which are lower than the discount rates used on a GAAP basis and results in higher carried reserves relative to GAAP reserves.2020.
The payment of dividends by CNAF's insurance subsidiaries without prior approval of the insurance department of each subsidiary’s domiciliary jurisdiction is generally limited by formula. Dividends in excess of these amounts are subject to prior approval by the respective insurance regulator.
Dividends from CCC are subject to the insurance holding company laws of the State of Illinois, the domiciliary state of CCC. Under these laws, ordinary dividends, or dividends that do not require prior approval by the Illinois Department of Insurance (the Department), are determined based on the greater of the prior year's statutory net income or 10% of statutory surplus as of the end of the prior year, as well as the timing and amount of dividends paid in the preceding twelve months. Additionally, ordinary dividends may only be paid from earned surplus, which is calculated by removing unrealized gains from unassigned surplus. As of December 31, 2017,2021, CCC is in a positive earned surplus position. The maximum allowable dividend CCC could pay during 20182022 that would not be subject to the Department’s prior approval is $1,073$1,201 million, less dividends paid during the preceding twelve months measured at that point in time. CCC paid dividends of $955$880 million in 2017.2021. The actual level of dividends paid in any year is determined after an assessment of available dividend capacity, holding company liquidity and cash needs as well as the impact the dividends will have on the statutory surplus of the applicable insurance company.

122


Combined statutory capital and surplus and statutory net income (loss) for the Combined Continental Casualty Companies are presented in the table below, determined in accordance with accounting practices prescribed or permitted by insurance and/or other regulatory authorities
Statutory Capital and Surplus Statutory Net Income (Loss)Statutory Capital and SurplusStatutory Net Income (Loss)
December 31 Years ended December 31December 31Years ended December 31
(In millions)
2017 (1)
 2016 
2017 (1)
 2016 2015(In millions)
2021 (1)
2020
2021 (1)
20202019
Combined Continental Casualty Companies$10,726
 $10,748
 $1,029
 $1,033
 $1,148
Combined Continental Casualty Companies$11,321 $10,708 $1,253 $800 $1,062 
(1) Information derived from the statutory-basis financial statements to be filed with insurance regulators.
CNAF’s domestic insurance subsidiaries are subject to risk-based capital (RBC) requirements. RBC is a method developed by the NAIC to determine the minimum amount of statutory capital appropriate for an insurance company to support its overall business operations in consideration of its size and risk profile. The formula for determining the amount of RBC specifies various factors, weighted based on the perceived degree of risk, which are applied to certain financial balances and financial activity. The adequacy of a company's actual capital is evaluated by a comparison to the RBC results, as determined by the formula. Companies below minimum RBC requirements are classified within certain levels, each of which requires specified corrective action.
The statutory capital and surplus presented above for CCC was approximately 264% and 270%266% of company action level RBC as of December 31, 20172021 and 2016.2020. Company action level RBC is the level of RBC which triggers a heightened level of regulatory supervision. The statutory capital and surplus of the Company's foreign insurance subsidiaries, which is not significant to the overall statutory capital and surplus, also met or exceeded their respective regulatory and other capital requirements.

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Note N. Accumulated Other Comprehensive Income (Loss) by Component
The tables below displaysdisplay the changes in Accumulated other comprehensive income (loss) by component.
(In millions)Net unrealized gains (losses) on investments with an allowance for credit lossesNet unrealized gains (losses) on other investmentsPension and postretirement benefitsCumulative foreign currency translation adjustmentTotal
Balance as of January 1, 2021$— $1,745 $(848)$(94)$803 
Other comprehensive income (loss) before reclassifications(7)(625)207 (19)(444)
Amounts reclassified from accumulated other comprehensive income (loss) net of tax (expense) benefit of $1, $(21), $10, $— and $(10)(5)81 (37)— 39 
Other comprehensive income (loss) net of tax (expense) benefit of $1, $188, $(65), $— and $124(2)(706)244 (19)(483)
Balance as of December 31, 2021$(2)$1,039 $(604)$(113)$320 
(In millions)Net unrealized gains (losses) on investments with OTTI losses Net unrealized gains (losses) on other investments Pension and postretirement benefits Cumulative foreign currency translation adjustment Total
Balance as of December 31, 2016$30
 $642
 $(647) $(198) $(173)
Other comprehensive income (loss) before reclassifications(3) 190
 (25) 100
 262
Amounts reclassified from accumulated other comprehensive income (loss) net of tax (expense) benefit of $(1), $(38), $15, $- and $(24)2
 82
 (27) 
 57
Other comprehensive income (loss) net of tax (expense) benefit of $2, $(68), $(9), $- and $(75)(5) 108

2
 100
 205
Balance as of December 31, 2017$25
 $750
 $(645) $(98) $32
(In millions)Net unrealized gains (losses) on investments with an allowance for credit lossesNet unrealized gains (losses) on other investmentsPension and postretirement benefitsCumulative foreign currency translation adjustmentTotal
Balance as of January 1, 2020$— $1,025 $(833)$(141)$51 
Other comprehensive income (loss) before reclassifications(43)763 (53)47 714 
Amounts reclassified from accumulated other comprehensive income (loss) net of tax (expense) benefit of $12, $(12), $10, $— and $10(43)43 (38)— (38)
Other comprehensive income (loss) net of tax (expense) benefit of $—, $(189), $4, $— and $(185)— 720 (15)47 752 
Balance as of December 31, 2020$— $1,745 $(848)$(94)$803 

(In millions)Net unrealized gains (losses) on investments with OTTI losses Net unrealized gains (losses) on other investments Pension and postretirement benefits Cumulative foreign currency translation adjustment Total
Balance as of December 31, 2015$27
 $390
 $(648) $(84) $(315)
Other comprehensive income (loss) before reclassifications9
 290
 (22) (114) 163
Amounts reclassified from accumulated other comprehensive income (loss) net of tax (expense) benefit of $(3), $(16), $12, $- and $(7)6
 38
 (23) 
 21
Other comprehensive income (loss) net of tax (expense) benefit of $(1), $(117), $(3), $- and $(121)3
 252
 1
 (114) 142
Balance as of December 31, 2016$30
 $642
 $(647) $(198) $(173)

Amounts reclassified from Accumulated other comprehensive income (loss) shown above are reported in Net income (loss) as follows:
Component of AOCIConsolidated Statements of Operations Line Item Affected by Reclassifications
Net unrealized gains (losses) on investments with an allowance for credit losses, Net unrealized gains (losses) on investments with OTTI lossesNet realized investment gains (losses)
and Net unrealized gains (losses) on other investmentsNet realized investment gains (losses)
Pension and postretirement benefitsOther operating expenses and Insurance claims and policyholders' benefits

124

Table of Contents
Note O. Business Segments
The Company's property and casualty commercial insurance operations are managed and reported in three3 business segments: Specialty, Commercial and International. These three3 segments are collectively referred to as Property & Casualty Operations. Specialty provides a broad array ofmanagement and professional financialliability and specialtyother coverages through property and casualty products and services through a network of independent agents, brokers and managing general underwriters. Commercial includes property and casualty coverages sold to small businesses and middle market entities and organizations primarily through an independent agency distribution system. Commercial also includes commercial insurance and risk management products sold to large corporations primarily through insurance brokers. International provides management and professional liability coverages as well as a broad range of other property and casualty insurance products and services abroad throughusing a network of brokers, independent agencies and managing general underwriters, as well asunderwriters. Commercial works with a network of brokers and independent agents to market a broad range of property and casualty insurance products to all types of insureds targeting small business, construction, middle markets and other commercial customers. The International segment underwrites property and casualty coverages on a global basis through a branch operation in Canada, a European business consisting of insurance companies based in the Lloyd’s of London marketplace.U.K. and Luxembourg and Hardy, the Company's Lloyd's syndicate.
The Company's operations outside of Property & Casualty Operations are managed and reported in two2 segments: Life & Group and Corporate & Other. Life & Group primarily includes the results of the individual and group long term care businessesbusiness that areis in run-off. Corporate & Other primarily includes certain corporate expenses, including interest on corporate debt, and the results of certain property and casualty business in run-off, including CNA Re, A&EP, a legacy portfolio of EWC policies and A&EP.certain legacy mass tort reserves.
Effective January 1, 2021, and in connection with the ceding of certain legacy reserves under a retroactive reinsurance agreement executed in February 2021, management changed the segment presentation of a legacy portfolio of excess workers’ compensation policies relating to business written in 2007 and prior. This business, which was previously reported as part of the Commercial business segment, is now reported as part of the Corporate & Other business segment. Further information on this retroactive reinsurance agreement is provided in Note E. In addition, a determination was made to change the segment presentation of certain legacy mass tort reserves. Similar to the aforementioned excess workers’ compensation legacy business, these legacy mass tort reserves were previously reported in the Commercial business segment and are now reported as part of the Corporate & Other business segment. These changes were made to better reflect the manner in which the Company is organized for purposes of making operating decisions and assessing performance. Prior period information has been conformed to the new segment presentation.
The accounting policies of the segments are the same as those described in Note A to the Consolidated Financial Statements. The Company manages most of its assets on a legal entity basis, while segment operations are generally conducted across legal entities. As such, only Insurance and Reinsurance receivables, Insurance reserves, Deferred acquisition costs, Goodwill and GoodwillDeferred non-insurance warranty acquisition expense and revenue are readily identifiable for individual segments. Distinct investment portfolios are not maintained for every individual segment; accordingly, allocation of assets to each segment is not performed. Therefore, a significant portion of Net investment income and RealizedNet investment gains or losses are allocated primarily based on each segment's net carried insurance reserves, as adjusted. SignificantAll significant intersegment income and expense hashave been eliminated. Income taxes have been allocated on the basis of the taxable income of the segments.
Approximately 7.7%10%, 7.9%9% and 8.0%9% of the Company's direct written premiums were derived from outside the United States for the years ended December 31, 2017, 20162021, 2020 and 2015.2019.
In the following tables, certain financial measures are presented to provide information used by management to monitor the Company's operating performance. Management utilizes these financial measures to monitor the Company's insurance operations and investment portfolio.
What was previously referred to as net operating income (loss) in our public disclosures is now referred to as core income (loss). With this terminology change, "Non-Core" was removed from the titlesThe performance of the Life & Group and Corporate & Other segments to avoid confusion. The fourth quarter 2017 net deferred tax asset remeasurement was excluded fromCompany's insurance operations is monitored by management through core income (loss) for the year ended December 31, 2017. Otherwise, there were no changes to the calculation of these measures. Core income (loss), which is derived from certain income statement amounts, is used by management to monitor performance of the Company's insurance operations.amounts. The Company's investment portfolio is monitored by management through analysis of various factors including unrealized gains and losses on securities, portfolio duration and exposure to market and credit risk.
Core income (loss) is calculated by excluding from net income (loss) the after-tax effects of i) net realized investment gains (losses), ii) income or loss from discontinued operations, iii)losses and any cumulative effects of changes in accounting guidance and iv) deferred tax asset and liability remeasurement as a result of an enacted U.S. Federal tax rate change.guidance. The calculation of core income (loss) excludes net realized investment gains or losses because net realized investment gains or losses are generally driven by economic factors that are not necessarily consistent with key driversreflective of underwriting performance, and are therefore not considered an indicationour primary operations.
125

Table of trends in insurance operations.Contents

The Company's results of operations and selected balance sheet items by segment are presented in the following tables.
Year ended December 31, 2021
Specialty

Commercial
InternationalLife &
Group
Corporate
& Other
  
(In millions)EliminationsTotal
Net written premiums$3,225 $3,595 $1,101 $485 $— $(1)$8,405 
Operating revenues 
Net earned premiums$3,076 $3,552 $1,057 $491 $— $(1)$8,175 
Net investment income497 624 57 966 15 — 2,159 
Non-insurance warranty revenue1,430 — — — — — 1,430 
Other revenues23 — — (6)24 
Total operating revenues5,004 4,199 1,114 1,457 21 (7)11,788 
Claims, benefits and expenses      
Net incurred claims and benefits1,787 2,540 652 1,239 109 — 6,327 
Policyholders’ dividends19 — — — — 22 
Amortization of deferred acquisition costs643 594 206 — — — 1,443 
Non-insurance warranty expense1,328 — — — — — 1,328 
Other insurance related expenses296 511 144 103 (1)1,062 
Other expenses47 38 (2)10 155 (6)242 
Total claims, benefits and expenses4,104 3,702 1,000 1,352 273 (7)10,424 
Core income (loss) before income tax900 497 114 105 (252)— 1,364 
Income tax (expense) benefit on core income (loss)(196)(103)(28)21 48 — (258)
Core income (loss) $704 $394 $86 $126 $(204)$— 1,106 
Net investment gains (losses)120 
Income tax (expense) benefit on net investment gains (losses)(24)
Net investment gains (losses), after tax96 
Net income (loss)$1,202 
December 31, 2021
(In millions)      
Reinsurance receivables$1,200 $923 $381 $401 $2,579 $— $5,484 
Insurance receivables1,136 1,488 340 — 2,974 
Deferred acquisition costs363 278 96 — — — 737 
Goodwill117 — 31 — — — 148 
Deferred non-insurance warranty acquisition expense3,476 — — — — — 3,476 
Insurance reserves 
Claim and claim adjustment expenses6,433 8,890 2,280 3,754 2,817 — 24,174 
Unearned premiums3,001 2,066 585 109 — — 5,761 
Future policy benefits— — — 13,236 — — 13,236 
Deferred non-insurance warranty revenue4,503 — — — — — 4,503 
126

Year ended December 31, 2017

Specialty
 

Commercial
 International 
Life &
Group
 
Corporate
& Other
    
Year ended December 31, 2020Year ended December 31, 2020
Specialty

Commercial
InternationalLife &
Group
Corporate
& Other
  
(In millions)

Specialty
 

Commercial
 International 
Life &
Group
 
Corporate
& Other
 Eliminations Total(In millions)EliminationsTotal
Net written premiums $(1) $7,069
Net written premiums$3,040 $3,565 $961 $494 $— $(1)$8,059 
Operating revenues             
Operating revenues 
Net earned premiums$2,753
 $2,840
 $857
 $539
 $
 $(1) $6,988
Net earned premiums$2,883 $3,323 $940 $504 $— $(1)$7,649 
Net investment income538
 642
 52
 782
 20
 
 2,034
Net investment income449 513 58 851 64 — 1,935 
Non-insurance warranty revenueNon-insurance warranty revenue1,252 — — — — ��� 1,252 
Other revenues392
 31
 
 2
 2
 
 427
Other revenues25 — — (5)26 
Total operating revenues3,683
 3,513
 909
 1,323
 22
 (1) 9,449
Total operating revenues4,585 3,861 998 1,355 69 (6)10,862 
Claims, Benefits and Expenses 
  
    
  
  
  
Claims, benefits and expensesClaims, benefits and expenses    
Net incurred claims and benefits1,535
 1,928
 575
 1,269
 (19) 
 5,288
Net incurred claims and benefits1,792 2,375 629 1,286 67 — 6,149 
Policyholders’ dividends4
 18
 
 
 
 
 22
Policyholders’ dividends18 — — — — 21 
Amortization of deferred acquisition costs596
 475
 162
 
 
 
 1,233
Amortization of deferred acquisition costs621 592 197 — — — 1,410 
Non-insurance warranty expenseNon-insurance warranty expense1,159 — — — — — 1,159 
Other insurance related expenses286
 523
 162
 129
 (1) (1) 1,098
Other insurance related expenses280 506 136 109 (2)(1)1,028 
Other expenses342
 57
 (7) 7
 192
 
 591
Other expenses50 34 (7)141 (5)220 
Total claims, benefits and expenses2,763
 3,001
 892
 1,405
 172
 (1) 8,232
Total claims, benefits and expenses3,905 3,525 955 1,402 206 (6)9,987 
Core income (loss) before income tax920
 512
 17
 (82) (150) 
 1,217
Core income (loss) before income tax680 336 43 (47)(137)— 875 
Income tax (expense) benefit on core income (loss)(310) (171) (9) 132
 60
 
 (298)Income tax (expense) benefit on core income (loss)(145)(69)(5)56 23 — (140)
Core income (loss) $610
 $341
 $8
 $50
 $(90) $
 919
Core income (loss)$535 $267 $38 $$(114)$— 735 
Net realized investment gains (losses)            93
Income tax (expense) benefit on net realized investment gains (losses)            (30)
Net realized investment gains (losses), after tax            63
Net deferred tax asset remeasurement            (83)
Net income            $899
Net investment gains (losses)Net investment gains (losses)(54)
Income tax (expense) benefit on net investment gains (losses)Income tax (expense) benefit on net investment gains (losses)
Net investment gains (losses), after taxNet investment gains (losses), after tax(45)
Net income (loss)Net income (loss)$690 
December 31, 2020
(In millions)
Reinsurance receivables$886 $848 $302 $390 $2,052 $— $4,478 
Insurance receivables1,052 1,254 328 — 2,640 
Deferred acquisition costs330 281 97 — — — 708 
Goodwill117 — 31 — — — 148 
Deferred non-insurance warranty acquisition expense3,068 — — — — — 3,068 
Insurance reserves 
Claim and claim adjustment expenses5,748 8,250 2,091 3,743 2,874 — 22,706 
Unearned premiums2,635 1,824 546 114 — — 5,119 
Future policy benefits— — — 13,318 — — 13,318 
Deferred non-insurance warranty revenue4,023 — — — — — 4,023 
127

Table of Contents
December 31, 2017             
(In millions)             
Reinsurance receivables$678
 $647
 $212
 $438
 $2,315
 $
 $4,290
Insurance receivables984
 1,088
 254
 8
 2
 
 2,336
Deferred acquisition costs319
 222
 93
 
 
 
 634
Goodwill117
 
 31
 
 
 
 148
Insurance reserves             
Claim and claim adjustment expenses5,848
 8,585
 1,636
 3,499
 2,436
 
 22,004
Unearned premiums2,035
 1,394
 472
 128
 
 
 4,029
Future policy benefits
 
 
 11,179
 
 
 11,179
Year ended December 31, 2019
Specialty

Commercial
Life &
Group
Corporate
& Other
(In millions)InternationalEliminationsTotal
Net written premiums$2,848 $3,315 $971 $523 $$(2)$7,656 
Operating revenues 
Net earned premiums$2,773 $3,162 $974 $520 $$(2)$7,428 
Net investment income556 605 63 820 74 — 2,118 
Non-insurance warranty revenue1,161 — — — — — 1,161 
Other revenues29 — — (5)31 
Total operating revenues4,491 3,796 1,037 1,340 81 (7)10,738 
Claims, benefits and expenses     
Net incurred claims and benefits1,595 2,086 624 1,416 62 — 5,783 
Policyholders’ dividends18 — — — — 23 
Amortization of deferred acquisition costs610 537 236 — — — 1,383 
Non-insurance warranty expense1,082 — — — — — 1,082 
Other insurance related expenses292 505 130 115 (2)(2)1,038 
Other expenses48 32 144 (5)235 
Total claims, benefits and expenses3,632 3,178 998 1,539 204 (7)9,544 
Core income (loss) before income tax859 618 39 (199)(123)— 1,194 
Income tax (expense) benefit on core income (loss)(188)(138)(9)90 30 — (215)
Core income (loss)$671 $480 $30 $(109)$(93)$— 979 
Net investment gains (losses)29 
Income tax (expense) benefit on net investment gains (losses)(8)
Net investment gains (losses), after tax21 
Net income (loss)$1,000 


128
Year ended December 31, 2016

Specialty
 

Commercial
 International 
Life &
Group
 
Corporate
& Other
    
(In millions)    Eliminations Total
Net written premiums$2,780
 $2,841
 $821
 $547
 $
 $(1) $6,988
Operating revenues             
Net earned premiums$2,779
 $2,804
 $806
 $536
 $
 $(1) $6,924
Net investment income516
 638
 51
 767
 16
 
 1,988
Other revenues362
 32
 
 (2) 12
 
 404
Total operating revenues3,657
 3,474
 857
 1,301
 28
 (1) 9,316
Claims, Benefits and Expenses 
      
  
  
  
Net incurred claims and benefits1,467
 1,927
 492
 1,286
 98
 
 5,270
Policyholders’ dividends4
 9
 
 
 
 
 13
Amortization of deferred acquisition costs591
 470
 174
 
 
 
 1,235
Other insurance related expenses301
 560
 133
 132
 (3) (1) 1,122
Other expenses312
 36
 24
 8
 209
 
 589
Total claims, benefits and expenses2,675
 3,002
 823
 1,426
 304
 (1) 8,229
Core income (loss) before income tax982
 472
 34
 (125) (276) 
 1,087
Income tax (expense) benefit on core income (loss)(332) (161) (13) 145
 98
 
 (263)
Core income (loss)$650
 $311
 $21
 $20
 $(178) $
 824
Net realized investment gains (losses)            50
Income tax (expense) benefit on net realized investment gains (losses)            (15)
Net realized investment gains (losses), after tax            35
Net income            $859


Table of Contents
December 31, 2016             
(In millions)             
Reinsurance receivables$760
 $621
 $131
 $462
 $2,479
 $
 $4,453
Insurance receivables982
 1,021
 233
 17
 2
 
 2,255
Deferred acquisition costs310
 214
 76
 
 
 
 600
Goodwill117
 
 28
 
 
 
 145
Insurance reserves             
Claim and claim adjustment expenses6,149
 8,894
 1,328
 3,358
 2,614
 
 22,343
Unearned premiums1,911
 1,323
 396
 132
 
 
 3,762
Future policy benefits
 
 
 10,326
 
 
 10,326

Year ended December 31, 2015

Specialty
 

Commercial
   
Life &
Group
 
Corporate
& Other
    
(In millions)  International   Eliminations Total
Net written premiums$2,781
 $2,818
 $822
 $542
 $1
 $(2) $6,962
Operating revenues             
Net earned premiums$2,782
 $2,788
 $804
 $548
 $1
 $(2) $6,921
Net investment income474
 593
 52
 704
 17
 
 1,840
Other revenues356
 37
 (1) 7
 11
 (3) 407
Total operating revenues3,612
 3,418
 855
 1,259
 29
 (5) 9,168
Claims, Benefits and Expenses 
      
  
  
  
Net incurred claims and benefits1,597
 1,814
 479
 1,421
 61
 
 5,372
Policyholders’ dividends4
 8
 
 
 
 
 12
Amortization of deferred acquisition costs589
 469
 168
 314
 
 
 1,540
Other insurance related expenses278
 538
 138
 142
 (1) (2) 1,093
Other expenses301
 28
 12
 11
 186
 (3) 535
Total claims, benefits and expenses2,769
 2,857
 797
 1,888
 246
 (5) 8,552
Core income (loss) before income tax843
 561
 58
 (629) (217) 
 616
Income tax (expense) benefit on core income (loss)(283) (192) (21) 315
 80
 
 (101)
Core income (loss)$560
 $369
 $37
 $(314) $(137) $
 515
Net realized investment gains (losses)            (67)
Income tax (expense) benefit on net realized investment gains (losses)            31
Net realized investment gains (losses), after tax            (36)
Net income            $479



The following table presents operating revenuerevenues by line of business for each reportable segment.
Years ended December 31
(In millions)202120202019
Specialty
Management & Professional Liability$2,776 $2,577 $2,572 
Surety604 596 596 
Warranty & Alternative Risks1,624 1,412 1,323 
Specialty revenues5,004 4,585 4,491 
Commercial
Middle Market1,508 1,444 1,439 
Construction1,322 1,120 1,043 
Small Business558 482 504 
Other Commercial811 815 810 
Commercial revenues4,199 3,861 3,796 
International
Canada344 291 277 
Europe473 389 363 
Hardy297 318 397 
International revenues1,114 998 1,037 
Life & Group revenues1,457 1,355 1,340 
Corporate & Other revenues21 69 81 
Eliminations(7)(6)(7)
Total operating revenues11,788 10,862 10,738 
Net investment gains (losses)120 (54)29 
Total revenues$11,908 $10,808 $10,767 
Years ended December 31     
(In millions)2017 2016 2015
Specialty     
Management & Professional Liability$2,591
 $2,617
 $2,647
Surety541
 529
 504
Warranty & Alternative Risks551
 511
 461
Specialty revenues3,683
 3,657
 3,612
Commercial 
  
  
Middle Market1,907
 1,768
 1,641
Small Business480
 582
 621
Other Commercial Insurance1,126
 1,124
 1,156
Commercial revenues3,513
 3,474
 3,418
International

 

 

Canada224
 203
 213
CNA Europe326
 314
 311
Hardy359
 340
 331
International revenues909
 857
 855
Life & Group revenues1,323
 1,301
 1,259
Corporate & Other revenues22
 28
 29
Eliminations(1) (1) (5)
Total operating revenues9,449
 9,316
 9,168
Net realized investment gains (losses) (1)
93
 50
 (67)
Total revenues$9,542
 $9,366
 $9,101
(1)2017 Net realized investment gains (losses) includes a $42 million loss on the early redemption of the Company's $350 million senior notes due November 2019.



Note P. Quarterly Financial Data (Unaudited)
The following tables present unaudited quarterly financial data.
2017         
(In millions, except per share data)First Second Third Fourth Full Year
Revenues$2,330
 $2,366
 $2,398
 $2,448
 $9,542
Net income (loss) (1)(2)
$260
 $272
 $144
 $223
 $899
Basic earnings (loss) per share$0.96
 $1.01
 $0.53
 $0.82
 $3.32
Diluted earnings (loss) per share$0.96
 $1.00
 $0.53
 $0.82
 $3.30
2016         
(In millions, except per share data)First Second Third Fourth Full Year
Revenues$2,195
 $2,348
 $2,433
 $2,390
 $9,366
Net income (loss) (3)
$66
 $209
 $343
 $241
 $859
Basic earnings (loss) per share$0.25
 $0.77
 $1.27
 $0.89
 $3.18
Diluted earnings (loss) per share$0.24
 $0.77
 $1.26
 $0.89
 $3.17
(1)Net income (loss) in the third quarter of 2017 included catastrophe losses, net of reinsurance and including reinstatement premiums, of $188 million related to Hurricanes Harvey, Irma and Maria.
(2) Net income (loss) in the fourth quarter of 2017 included a one-time non-cash increase to Income tax expense of $83 million as a result of Tax Reform Legislation.
(3)Net income (loss) in the first quarter of 2016 included a charge related to the application of retroactive reinsurance accounting to adverse reserve development ceded under the 2010 A&EP Loss Portfolio Transfer in our Corporate & Other segment.

Note Q. Related Party Transactions
The Company reimburses Loews for, or pays directly, fees and expenses of investment facilities and services provided to the Company. Additionally, the Company provides investment-related processing services to Loews and charges Loews for these services. The net amounts incurred by the Company for these fees, expenses and expensesservices were $43$47 million, $43$47 million and $39$44 million for the years ended December 31, 2017, 20162021, 2020 and 2015. Amounts2019. Net amounts due to Loews related to these services, included in Other liabilities and payable in the first quarter of the subsequent year, were $22$23 million and $23$22 million as of December 31, 20172021 and 2016.2020. In addition, the Company reimbursed Loews for general corporate services and related travel expenses of less than $1 million and less than $1 million for the years ended December 31, 20172021 and 2016.2020. The CNA Tax Group is included in the consolidated federal income tax return of Loews and its eligible subsidiaries, and thesubsidiaries. The related payable due to Loews, included in Other liabilities, was $121$33 million and $28$67 million as of December 31, 20172021 and 2016.2020. For a detailed description of the income tax agreement with Loews see Note D to the Consolidated Financial Statements. In 2021, the Company wrote an appeal bond for Loews at standard rates. In addition, the Company writes, at standard rates, a limited amount of insurance for Loews and its subsidiaries. The earned premiums for each of the years ended December 31, 2017, 20162021, 2020 and 20152019 were $2 million.

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Note Q. Non-Insurance Revenues from Contracts with Customers
Non-Insurance revenue is recognized when obligations under the terms of a contract with a customer are satisfied; generally this occurs over time as obligations are fulfilled. Revenue is measured as the amount of consideration the Company expects to receive in exchange for providing services.
Deferred Non-Insurance Warranty Revenue
The Company had deferred non-insurance warranty revenue balances of $4.5 billion and $4.0 billion reported in Deferred non-insurance warranty revenue as of December 31, 2021 and 2020. The increase in the deferred revenue balance for the year ended December 31, 2021 was primarily driven by deferrals outpacing revenue recognized in the period due to growth in the business. For the year ended December 31, 2021, the Company recognized $1.2 billion of revenues that were included in the deferred revenue balance as of January 1, 2021. For the year ended December 31, 2020, the Company recognized $1.1 billion of revenues that were included in the deferred revenue balance as of January 1, 2020. For the years ended December 31, 2021 and 2020, Non-insurance warranty revenue recognized from performance obligations related to prior periods due to a change in estimate was not material. The Company expects to recognize approximately $1.3 billion of the deferred revenue in 2022, $1.0 billion in 2023, $0.8 billion in 2024 and $1.3 billion thereafter.
Cost to Obtain and Fulfill Non-Insurance Warranty Contracts with Customers
For the years ended December 31, 2021 and 2020, capitalized commission costs were $3.5 billion and $3.1 billion and capitalized administrator service costs were $47 million and $37 million. For the years ended December 31, 2021 and 2020, the amount of amortization of capitalized costs was $1.1 billion and $0.9 billion and there were no impairment losses related to the costs capitalized. There were no adjustments to deferred costs recorded for the years ended December 31, 2021 and 2020.
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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors and Stockholders of
CNA Financial Corporation
Chicago, Illinois
Opinions on the Financial Statements and Internal Control over Financial Reporting
We have audited the accompanying consolidated balance sheets of CNA Financial Corporation (an affiliate of Loews Corporation) and subsidiaries (the "Company") as of December 31, 20172021 and 2016,2020, the related consolidated statements of operations, comprehensive income (loss), cash flows, and stockholders' equity, for each of the three years in the period ended December 31, 2017,2021, and the related notes and the schedules listed in the Index at Item 15 (collectively referred to as the "financial statements"). We also have audited the Company’s internal control over financial reporting as of December 31, 2017,2021, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).
In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 20172021 and 2016,2020, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2017,2021, in conformity with accounting principles generally accepted in the United States of America. Also, in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2017,2021, based on criteria established in Internal Control - Integrated Framework (2013) issued by COSO.
Change in Accounting Principle
As discussed in Note A to the financial statements, the Company changed its method of accounting for measurement of credit losses on financial instruments in 2020.
Basis for Opinions
The Company’s management is responsible for these financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on these financial statements and an opinion on the Company’s internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.
Our audits of the financial statements included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures to respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

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Definition and Limitations of Internal Control over Financial Reporting
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Critical Audit Matters
The critical audit matters communicated below are matters arising from the current-period audit of the financial statements that were communicated or required to be communicated to the audit committee and that (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.
Claim and claim adjustment expense reserves - Property & Casualty - Refer to Notes A and E to the consolidated financial statements.
Critical Audit Matter Description
The estimation of property and casualty claim and claim adjustment expense reserves (“P&C claim and claim adjustment expense reserves”), including those claims that are incurred but not reported, requires significant judgment. Estimating P&C claim and claim adjustment expense reserves is subject to a high degree of variability as it involves complex estimates that are generally derived using a variety of actuarial estimation techniques and numerous assumptions and expectations about future events, many of which are highly uncertain. Modest changes in judgments and assumptions can materially impact the valuation of these liabilities, particularly for claims with longer-tailed exposures such as workers’ compensation, general liability and professional liability claims.
Given the significant judgments made by management in estimating P&C claim and claim adjustment expense reserves, auditing P&C claim and claim adjustment expense reserves required a high degree of auditor judgment and an increased extent of effort, including the involvement of our actuarial specialists.
How the Critical Audit Matter Was Addressed in the Audit
Our audit procedures related to P&C claim and claim adjustment expense reserves included the following, among others:
We tested the effectiveness of controls related to the determination of P&C claim and claim adjustment expense reserves, including those controls related to the estimation of and management’s review of P&C claim and claim adjustment expense reserves.
We tested the underlying data, including historical claims, that served as the basis for the actuarial analyses, to test that the inputs to the actuarial estimates were accurate and complete.
With the assistance of our actuarial specialists:
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We developed a range of independent estimates of P&C claim and claim adjustment expense reserves and compared our estimates to the recorded reserves.
We compared our prior year estimates of expected incurred losses to actual experience during the most recent year to identify potential bias in the Company’s determination of P&C claim and claim adjustment expense reserves.
Future policy benefit reserves - Long Term Care - Refer to Notes A and E to the consolidated financial statements.
Critical Audit Matter Description
The estimation of long term care future policy benefit reserves (“LTC future policy benefit reserves”) requires significant judgment in the selection of key assumptions, including morbidity, persistency (inclusive of mortality), discount rate and future premium rate increases.
A gross premium valuation (“GPV”) is performed annually to assess the adequacy of the LTC future policy benefit reserves. The actuarial assumptions underlying the recorded LTC future policy benefit reserves are “locked-in” absent an indicated premium deficiency. If the GPV indicates the recorded LTC future policy benefit reserves are not adequate (i.e. a premium deficiency exists), the assumptions are “unlocked” and the LTC future policy benefit reserves are increased to eliminate the premium deficiency.
Estimating future experience for long term care policies is subject to significant estimation risk as the required projection period spans several decades. Morbidity and persistency experience can be volatile while discount rates and premium rate increases can be difficult to predict. Modest changes in each of these assumptions can materially impact the valuation of these liabilities.
Given the significant judgments made by management in estimating LTC future policy benefit reserves, auditing LTC future policy benefit reserves required a high degree of auditor judgment and an increased extent of effort, including the involvement of our actuarial specialists.
How the Critical Audit Matter Was Addressed in the Audit
Our audit procedures related to LTC future policy benefit reserves included the following, among others:
We tested the effectiveness of controls related to the determination of LTC future policy benefit reserves, including those controls related to the estimation of and management’s review of LTC future policy benefit reserves.
We tested the underlying data, including demographic and historical claims data, that served as the basis for the actuarial analyses, to test that the inputs to the actuarial estimates were accurate and complete.
With the assistance of our actuarial specialists:
We independently recalculated a sample of LTC future policy benefit reserves and compared our estimates to the recorded reserves.
We evaluated the key assumptions applied in the GPV analysis, including comparing those assumptions to the Company’s historical experience, underlying portfolio yield and market data.
We assessed the Company’s projection of future cash flows to evaluate the adequacy of recorded reserves using "locked-in" assumptions.
/s/ DELOITTE & TOUCHE LLP
Chicago, Illinois
February 14, 20188, 2022
We have served as the Company's auditor since 1976.

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MANAGEMENT'S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING
The management of CNA Financial Corporation (CNAF or the Company) is responsible for establishing and maintaining adequate internal control over financial reporting. CNAF's internal control system was designed to provide reasonable assurance to the Company's management, its Audit Committee and Board of Directors regarding the preparation and fair presentation of published financial statements.
There are inherent limitations to the effectiveness of any internal control or system of control, however well designed, including the possibility of human error and the possible circumvention or overriding of such controls or systems. Moreover, because of changing conditions the reliability of internal controls may vary over time. As a result even effective internal controls can provide no more than reasonable assurance with respect to the accuracy and completeness of financial statements and their process of preparation.
CNAF management assessed the effectiveness of the Company's internal control over financial reporting as of December 31, 2017.2021. In making this assessment, it has used the criteria set forth by the 2013 Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control - Integrated Framework. Based on those criteria and our assessment we believe that, as of December 31, 2017,2021, the Company's internal control over financial reporting was effective.
CNAF's independent registered public accountant, Deloitte & Touche LLP, has issued an audit report on the Company's internal control over financial reporting. This report appears on page 129.131.


CNA Financial Corporation
Chicago, Illinois
February 14, 20188, 2022

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ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
None.
ITEM 9A. CONTROLS AND PROCEDURES
As of December 31, 2017,2021, the Company's management, including the Company's Chief Executive Officer (CEO) and Chief Financial Officer (CFO), conducted an evaluation of the effectiveness of the Company's disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)). Based on this evaluation, the CEO and CFO have concluded that the Company's disclosure controls and procedures are effective.
Pursuant to Section 404 of the Sarbanes-Oxley Act of 2002, and the implementing rules of the Securities and Exchange Commission, the Company included a report of management's assessment of the design and effectiveness of its internal controls as part of this Annual Report on Form 10-K for the fiscal year ended December 31, 2017.2021. Management's report and the independent registered public accounting firm's attestation report are included in Part II, Item 8 under the captions entitled “Management's Report on Internal Control Over Financial Reporting” and “Report of Independent Registered Public Accounting Firm” and are incorporated herein by reference.
There has been no change in the Company’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the quarter ended December 31, 20172021 that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.
ITEM 9B. OTHER INFORMATION
None.

ITEM 9C. DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS
None.
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PART III
ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE
EXECUTIVE OFFICERS OF THE REGISTRANTInformation about our Executive Officers
NAMEPOSITION AND OFFICES HELD WITH REGISTRANTAGEFIRST BECAME EXECUTIVE OFFICER OF CNAPRINCIPAL OCCUPATION DURING PAST FIVE YEARS
Dino E. RobustoChief Executive Officer632016Chairman of the Board and Chief Executive Officer of CNA Financial Corporation since November 2016.
Larry A. Haefner (1)
Interim Chief Financial Officer652008Interim Chief Financial Officer of CNA Financial Corporation since September 2021.  Executive Vice President & Chief Actuary of the CNA Insurance Companies from April 2008 through August 2020.
Elizabeth A. AguinagaExecutive Vice President & Chief Human Resources Officer442018Executive Vice President and Chief Human Resources Officer of CNA Insurance Companies since February 2018. Senior Vice President, Chief Human Resources Officer of CNA Insurance Companies from September 2015 through February 2018.
Michael A. CostonisExecutive Vice President & Global Head of Marketing, Strategy & Innovation512018Executive Vice President & Global Head of Marketing, Strategy & Innovation since August 2021. Executive Vice President & Chief Operations Officer of the CNA Insurance Companies from September 2018 to August 2021. Global Insurance Industry Practice Leader and Senior Managing Director at Accenture from 2014 through September 2018.
Nick CreaturaPresident & Chief Executive Officer, Canada582020President and Chief Executive Officer, Canada of the CNA Insurance Companies since May 2017.
Daniel P. FranzettiExecutive Vice President, Worldwide Claim552020Executive Vice President, Worldwide Claim of the CNA Insurance Companies since April 2020. Chief Operating Officer, QBE North America from January 2018 through April 2020. Chief Claims Officer, QBE North America from February 2016 through January 2018.
Gary HaaseExecutive Vice President & Chief Operations Officer452021Executive Vice President & Chief Operations Officer of the CNA Insurance Companies since October 2021. Group Chief Operating Officer, Catalina Holdings (Bermuda) Ltd from October 2018 through September 2021. Chief Operating Officer, Catalina Holdings (Bermuda) Ltd from 2014 through 2018.
Robert J. HopperExecutive Vice President & Chief Actuary552020Executive Vice President & Chief Actuary of the CNA Insurance Companies since August 2020. Executive Vice President, Actuary of the CNA Insurance Companies from February 2020 through August 2020. Senior Vice President and Actuary for Chubb Commercial Insurance from 2005 through February 2020.
Kevin J. Leidwinger(2)
President & Chief Operating Officer, Commercial582015President and Chief Operating Officer, Commercial of the CNA Insurance Companies since June 2015.
Jalil RehmanPresident & Chief Executive Officer, U.K. & Europe572020President and Chief Executive Officer, U.K. & Europe of the CNA Insurance Companies since September 2020. Senior Vice President and Chief Operating Officer, U.K. & Europe of the CNA Insurance Companies from October 2018 to September 2020. Executive Vice President & Chief Business Operations Officer of Chubb European Group PLC from January 2016 through July 2018.
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NAMEPOSITION AND OFFICES HELD WITH REGISTRANTAGEFIRST BECAME EXECUTIVE OFFICER OF CNAPRINCIPAL OCCUPATION DURING PAST FIVE YEARS
Dino E. RobustoChief Executive Officer, CNA Financial Corporation592016
Chairman of the Board and Chief Executive Officer of CNA Financial Corporation since November 2016. President of Commercial and Specialty Lines of the Chubb Group of Insurance Companies and Executive Vice President of Chubb Limited from 2013 through November 2015. President of Personal Lines and Claims of Chubb Limited from 2011 through 2013.
D. Craig MenseExecutive Vice President & Chief Financial Officer, CNA Financial Corporation662004Executive Vice President and Chief Financial Officer of CNA Financial Corporation.
Elizabeth A. Aguinaga(1)
Executive Vice President and Chief Human Resource Officer, CNA insurance companies402018Executive Vice President and Chief Human Resources Officer of CNA insurance companies since February 2018. Senior Vice President, Chief Human Resources Officer of CNA insurance companies from September 2015 through October 2017. Vice President, Human Resources of CNA insurance companies from September 2010 through September 2015.
David BrosnanChief Executive, CNA Europe and Hardy552015Chief Executive of CNA Europe since August 2014 and Chief Executive of Hardy since February 2014. Senior Vice President, Commercial from May 2013 through February 2014. President and CEO, ACE INA Insurance Canada and ACE INA Life Insurance, Canada from 2008 through May 2013.
Larry A. HaefnerExecutive Vice President & Chief Actuary of the CNA insurance companies612008Executive Vice President & Chief Actuary of the CNA insurance companies.
Kevin Leidwinger
President and Chief Operating Officer, Commercial of the CNA insurance companies

542015President and Chief Operating Officer, Commercial of the CNA insurance companies since June 2015. Global Casualty Manager for Chubb Commercial Insurance from April 2013 to June 2015. Global Liability Product Line Manager for Chubb Commercial Insurance from 2002 to 2013.
Joseph G. MertenExecutive Vice President of Technology Operations, CNA insurance companies582017Executive Vice President of Technology Operations of CNA insurance companies since January 2017. Senior Vice President, AXIS Capital from May 2013 through July 2016. Independent Contractor, AXIS Capital from August 2011 through May 2013.
Albert J. Miralles (2)
President, Long Term Care of the CNA insurance companies482014President, Long Term Care of the CNA insurance companies since March 2014. Senior Vice President and Treasurer of the CNA insurance companies from 2011 to March 2014.
Andrew J. PinkesExecutive Vice President, Worldwide Property & Casualty Claim of the CNA insurance companies552015Executive Vice President, Worldwide Property & Casualty Claim of the CNA insurance companies since May 2015. Executive Vice President, Global Head of Claims for the XL Group from May 2013 to May 2015. Executive Vice President, Claims for The Hartford Financial Services Group, Inc. and President, Heritage Holdings, Inc. for Hartford from 2008 to 2013.
Kevin G. Smith 
President and Chief Operating Officer for Specialty, CNA insurance companies532017President and Chief Operating Officer for Specialty of CNA insurance companies since May 2017. Executive Vice President, Chubb from May 2016 through May 2017. Senior Vice President, Chicago Regional Branch Manager, Chubb from July 2008 through May 2016.
Timothy J. Szerlong (3)
President, Worldwide Field Operations of the CNA insurance companies652010President, Worldwide Field Operations of the CNA insurance companies.
NAMEPOSITION AND OFFICES HELD WITH REGISTRANTAGEFIRST BECAME EXECUTIVE OFFICER OF CNAPRINCIPAL OCCUPATION DURING PAST FIVE YEARS
Kevin G. Smith
President & Chief Operating Officer, Specialty572017President and Chief Operating Officer for Specialty of CNA Insurance Companies since May 2017. Executive Vice President, Chubb from May 2016 through May 2017.
Susan A. StoneExecutive Vice President & General Counsel602021Executive Vice President and General Counsel of CNA Financial Corporation since June 2021. General Counsel, Marsh LLC from February 2017 through May 2021. Prior to February 2017, served in various capacities at Sidley Austin since 1989, including Executive Committee Member, Practice Group Head, Partner and Associate.
Douglas M. WormanExecutive Vice President & Chief Underwriting Officer542017Executive Vice President and Chief Underwriting Officer of CNA Insurance Companies since March 2017.

NAMEPOSITION AND OFFICES HELD WITH REGISTRANTAGEFIRST BECAME EXECUTIVE OFFICER OF CNAPRINCIPAL OCCUPATION DURING PAST FIVE YEARS
Scott Louis WeberExecutive Vice President and General Counsel, CNA Financial Corporation492017Executive Vice President and General Counsel of CNA Financial Corporation since June 2017. Senior Vice President for Worldwide P&C Claim of CNA insurance companies from February 2017 through June 2017. Managing Director for Stroz Friedberg March 2014 through February 2017. Director for Opera Solutions March 2011 through July 2014.
Douglas M. WormanExecutive Vice President and Chief Underwriting Officer, CNA insurance companies502017Executive Vice President and Chief Underwriting Officer of CNA insurance companies since March 2017. Chief Executive Officer, U.S. Insurance, ENH Insurance Company from November 2013 through July 2016. President and Chief Executive Officer, Alterra US Insurance, and Executive Vice President, Alterra Capital Holdings Ltd. from June 2010 through June 2013.
(1)Elizabeth Larry A. Aguinaga became an executive officer effectiveHaefner will be succeeded in this role on February 7, 2018.14, 2022 by Scott Lindquist, 58, who previously served as Chief Financial Officer of Farmers Group, Inc. from February 2008 through April 2021 and Senior Adviser to the Chief Executive Officer of Farmers Group, Inc. from April 2021 through September 2021.
(2) Effective January 1, 2018, AlbertKevin J. Miralles will assume the role of Chief Risk Officer.
(3) Timothy J. SzerlongLeidwinger announced his retirementintention to retire effective December 31, 2017.April 30, 2022

Officers are elected annually and hold office until their successors are elected and qualified, and are subject to removal by the Board of Directors.
Additional information required in Part III, Item 10 has been omitted as we intend to include such information in our definitive proxy statement which will be filed with the Securities and Exchange Commission not later than 120 days after December 31, 2017.2021.


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ITEM 11. EXECUTIVE COMPENSATION
Information required in Part III, Item 11 has been omitted as we intend to include such information in our definitive proxy statement which will be filed with the Securities and Exchange Commission not later than 120 days after December 31, 2017.2021.
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
Equity Compensation Plan
The table below presents the securities authorized for issuance under equity compensation plans. Performance share units are included at the maximum potential payout percentage.
December 31, 2017Number of securities to be issued upon exercise of outstanding options, warrants and rights Weighted average exercise price of outstanding options, warrants and rights Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
December 31, 2021December 31, 2021Number of securities to be issued upon exercise of outstanding options, warrants and rightsWeighted average exercise price of outstanding options, warrants and rightsNumber of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
Plan Category(a) (b) (c)Plan Category(a)(b)(c)
Equity compensation plans approved by security holders3,303,753
 $38.39
 2,827,140
Equity compensation plans approved by security holders3,196,059 $42.01 5,570,594 
Equity compensation plans not approved by security holders
 
 
Equity compensation plans not approved by security holders— — — 
Total3,303,753
 $38.39
 2,827,140
Total3,196,059 $42.01 5,570,594 
Additional information required in Part III, Item 12 has been omitted as we intend to include such information in our definitive proxy statement which will be filed with the Securities and Exchange Commission not later than 120 days after December 31, 2017.2021.
ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE
Information required in Part III, Item 13 has been omitted as we intend to include such information in our definitive proxy statement which will be filed with the Securities and Exchange Commission not later than 120 days after December 31, 2017.2021.
ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES
Information required in Part III, Item 14 about aggregate fees billed to us by our principal accountant, Deloitte & Touche LLP (PCAOB ID No. 34) has been omitted as we intend to include such information in our definitive proxy statement which will be filed with the Securities and Exchange Commission not later than 120 days after December 31, 2017.2021.

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PART IV
ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES
(1)    FINANCIAL STATEMENTS:
Page Number
(2)    FINANCIAL STATEMENT SCHEDULES:
Schedule I
Schedule II
Schedule III
Schedule IV
Schedule V
Schedule VI
(3)    EXHIBITS:
Description of ExhibitExhibit Number
(3(3))Articles of incorporation and by-laws:
3.1
3.1.1
Certificate of Amendment of Certificate of Incorporation, dated May 10, 1999 (Exhibit 3.1 to 1999 Form 10-K incorporated herein by reference)3.1.2
**P
3.2
(4(4))Instruments defining the rights of security holders, including indentures:*
4.1

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(10Material contracts:4.2 
(10)Material contracts:
10.1
Federal Income Tax Allocation Agreement, dated February 29, 1980 between CNA Financial Corporation and Loews Corporation (Exhibit 10.2 to 1987 Form 10-K incorporated herein by reference)10.2
**P
10.3
10.3.1
10.4
+
10.4.1
10.5
+
10.6
+
10.6.1
+
10.6.2
+
10.7
10.10
+
10.10.1
+
10.10.2
+
10.10.3
+

10.10.4
+
10.1110.8
+
10.12
+
10.1310.9
10.1410.10
10.1510.11
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10.1610.12
10.1710.13
10.1810.14

10.19
+
10.20
+

10.21
+

10.15
(21)Subsidiaries of the Registrant
(21)Subsidiaries of the Registrant
21.1
(23(23))Consent of Experts and Counsel
23.1
(31(31))Rule 13a-14(a)/15d-14(a) Certifications
31.1

31.2

(32(32))Section 1350 Certifications
32.1

32.2
(101(101))XBRL - Interactive Data File
XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document101.INS
Inline XBRL Taxonomy Extension Schema101.SCH
Inline XBRL Taxonomy Extension Calculation Linkbase101.CAL
Inline XBRL Taxonomy Extension Definition Linkbase101.DEF
Inline XBRL Taxonomy Label Linkbase101.LAB
Inline XBRL Taxonomy Extension Presentation Linkbase101.PRE
* CNA Financial Corporation hereby agrees to furnish to the Commission upon request copies of instruments with respect to long term debt, pursuant to Item 601(b)(4) (iii) of Regulation S-K.
** Per Item 10(d) of Regulation S-K [17CFR 229.10(d)], these exhibits do not need to be hyperlinked.
+ Management contract or compensatory plan or arrangement.
Except for Exhibits 10.20, 10.21, 21.1, 23.1, 31.1, 31.2, 32.1, 32.2 and the XBRL documents as discussed in the note above, the exhibits above are not included in this report, but are on file with the SEC.

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(104)Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)104.1 
* CNA Financial Corporation hereby agrees to furnish to the Commission upon request copies of instruments with respect to long term debt, pursuant to Item 601(b)(4) (iii) of Regulation S-K.
P - Per Item 102(d) of Regulation S-T [17CFR 232.102(d)], these exhibits do not need to be hyperlinked.
+ Management contract or compensatory plan or arrangement.
Except for Exhibits 10.6, 21.1, 23.1, 31.1, 31.2, 32.1, 32.2 and the XBRL documents as discussed in the note above, the exhibits above are not included in this report, but are on file with the SEC.
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SCHEDULE I. SUMMARY OF INVESTMENTS - OTHER THAN INVESTMENTS IN RELATED PARTIES
Incorporated herein by reference to Note B to the Consolidated Financial Statements included under Item 8.
SCHEDULE II. CONDENSED FINANCIAL INFORMATION OF REGISTRANT (PARENT COMPANY)
CNA Financial Corporation
Statements of Operations and Comprehensive Income (Loss)
Years ended December 31     Years ended December 31
(In millions)2017 2016 2015(In millions)202120202019
Revenues     Revenues
Net investment income$6
 $3
 $1
Net investment income$— $$13 
Net realized investment (losses) gains(42) (7) 5
Net investment lossesNet investment losses— (20)(21)
Total revenues(36) (4) 6
Total revenues— (17)(8)
Expenses     Expenses
Administrative and general2
 1
 1
Administrative and general
Interest152
 155
 154
Interest112 122 131 
Total expenses154
 156
 155
Total expenses113 123 132 
Loss from operations before income taxes and equity in net income of subsidiaries(190) (160) (149)Loss from operations before income taxes and equity in net income of subsidiaries(113)(140)(140)
Income tax benefit57
 41
 34
Income tax benefit11 18 21 
Loss before equity in net income of subsidiaries(133) (119) (115)Loss before equity in net income of subsidiaries(102)(122)(119)
Equity in net income of subsidiaries1,032
 978
 594
Equity in net income of subsidiaries1,304 812 1,119 
Net income899
 859
 479
Net income1,202 690 1,000 
Equity in other comprehensive income of subsidiaries205
 142
 (715)
Total comprehensive income (loss)$1,104
 $1,001
 $(236)
Equity in other comprehensive (loss) income of subsidiariesEquity in other comprehensive (loss) income of subsidiaries(483)752 929 
Total comprehensive incomeTotal comprehensive income$719 $1,442 $1,929 
See accompanying Notes to Condensed Financial Information as well as the
Consolidated Financial Statements and accompanying Notes.

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CNA Financial Corporation
Balance Sheets
December 31   December 31
(In millions, except share data)2017 2016(In millions, except share data)20212020
Assets   Assets
Investment in subsidiaries$14,481
 $14,202
Investment in subsidiaries$14,937 $14,996 
Cash1
 1
Cash— 
Short term investments638
 487
Short term investments685 522 
Amounts due from affiliates4
 6
Amounts due from affiliates
Other assets1
 1
Other assets— 
Total assets$15,125
 $14,697
Total assets$15,626 $15,523 
Liabilities   Liabilities
Short term debt$150
 $
Long term debt2,678
 2,680
Long term debt$2,779 $2,776 
Other liabilities53
 48
Other liabilities38 40 
Total liabilities2,881
 2,728
Total liabilities2,817 2,816 
Stockholders' Equity   Stockholders' Equity
Common stock ($2.50 par value; 500,000,000 shares authorized; 273,040,243 shares issued; 271,205,390 and 270,495,998 shares outstanding)683
 683
Common stock ($2.50 par value; 500,000,000 shares authorized; 273,040,243 shares issued; 271,363,999 and 271,391,603 shares outstanding)Common stock ($2.50 par value; 500,000,000 shares authorized; 273,040,243 shares issued; 271,363,999 and 271,391,603 shares outstanding)683 683 
Additional paid-in capital2,175
 2,173
Additional paid-in capital2,215 2,211 
Retained earnings9,414
 9,359
Retained earnings9,663 9,081 
Accumulated other comprehensive income32
 (173)Accumulated other comprehensive income320 803 
Treasury stock (1,834,853 and 2,544,245 shares), at cost(60) (73)
Treasury stock (1,676,244 and 1,648,640 shares), at costTreasury stock (1,676,244 and 1,648,640 shares), at cost(72)(71)
Total stockholders' equity12,244
 11,969
Total stockholders' equity12,809 12,707 
Total liabilities and stockholders' equity$15,125
 $14,697
Total liabilities and stockholders' equity$15,626 $15,523 
See accompanying Notes to Condensed Financial Information as well as the
Consolidated Financial Statements and accompanying Notes.

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CNA Financial Corporation
Statements of Cash Flows
Years ended December 31     Years ended December 31
(In millions)2017 2016 2015(In millions)202120202019
Cash Flows from Operating Activities     Cash Flows from Operating Activities
Net income$899
 $859
 $479
Net income$1,202 $690 $1,000 
Adjustments to reconcile net income to net cash flows provided by operating activities:     Adjustments to reconcile net income to net cash flows provided by operating activities:
Equity in net income of subsidiaries(1,032) (978) (594)Equity in net income of subsidiaries(1,304)(812)(1,119)
Dividends received from subsidiaries955
 765
 900
Dividends received from subsidiaries880 975 1,065 
Net realized investment losses (gains)42
 7
 (5)
Net investment incomeNet investment income— 20 21 
Other, net36
 21
 4
Other, net33 26 13 
Total adjustments1
 (185) 305
Net cash flows provided by operating activities900
 674
 784
Net cash flows provided by operating activities811 899 980 
Cash Flows from Investing Activities     Cash Flows from Investing Activities
Change in short term investments(146) (9) 21
Change in short term investments(163)10 
Capital contributions to subsidiariesCapital contributions to subsidiaries— (1)(2)
Other, net
 4
 7
Other, net— — — 
Net cash flows (used) provided by investing activities(146) (5) 28
Net cash flows (used) provided by investing activities(163)
Cash Flows from Financing Activities     Cash Flows from Financing Activities
Dividends paid to common stockholders(842) (813) (811)Dividends paid to common stockholders(621)(950)(929)
Proceeds from the issuance of debt496
 498
 
Proceeds from the issuance of debt— 495 496 
Repayment of debt(391) (358) 
Repayment of debt— (419)(520)
Stock options exercised
 
 1
Purchase of treasury stockPurchase of treasury stock(18)(18)(23)
Other, net(17) 1
 1
Other, net(8)(9)(12)
Net cash flows used by financing activities(754) (672) (809)Net cash flows used by financing activities(647)(901)(988)
Net change in cash
 (3) 3
Net change in cash(1)— 
Cash, beginning of year1
 4
 1
Cash, beginning of year— 
Cash, end of year$1
 $1
 $4
Cash, end of year$$— $
See accompanying Notes to Condensed Financial Information as well as the
Consolidated Financial Statements and accompanying Notes.

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Notes to Condensed Financial Information
A. Summary of Significant Accounting Policies
Basis of Presentation
The condensed financial information of CNA Financial Corporation (CNAF or the Parent Company) should be read in conjunction with the Consolidated Financial Statements and Notes thereto included in Item 8 of this Form 10-K. CNAF’s subsidiaries are accounted for using the equity method of accounting. Equity in net income of these subsidiaries is presented on the Condensed Statements of Operations as Equity in net income of subsidiaries. Loews owned approximately 89%89.6% of the outstanding common stock of CNAF as of December 31, 2017.2021.
B. Guarantees
146
As

Table of December 31, 2017 and 2016 CNAF had recorded liabilities of approximately $5 million related to guarantee agreements. The Parent Company believes that it is not likely that any future indemnity claims will be significantly greater than the amounts recorded.Contents
In the course of selling business entities and assets to third parties, CNAF has agreed to guarantee the performance of certain obligations of both a previously owned subsidiary and a current subsidiary. Such obligations include agreement to indemnify purchasers for losses arising out of breaches of representation and warranties with respect to the business entities or assets sold, including, in certain cases, losses arising from undisclosed liabilities or certain named litigation. The guarantee agreements may include provisions that survive indefinitely. As of December 31, 2017, the aggregate amount of quantifiable guarantee agreements in effect for sales of business entities, assets and third-party loans was $625 million. Should the company be required to make payments under the guarantee, it would have the right to seek reimbursement in certain cases from an affiliate of a previously owned subsidiary.
In addition, CNAF has agreed to provide indemnification to third-party purchasers for certain losses associated with sold business entities or assets that are not limited by a contractual monetary amount. As of December 31, 2017, CNAF had outstanding unlimited indemnifications in connection with the sales of certain of its business entities or assets that included tax liabilities arising prior to a purchaser’s ownership of an entity or asset, defects in title at the time of sale, employee claims arising prior to closing and in some cases losses arising from certain litigation and undisclosed liabilities. These indemnification agreements survive until the applicable statutes of limitation expire or until the agreed upon contract terms expire.
CNAF also provided guarantees, if the primary obligor fails to perform, to holders of structured settlement annuities provided by a previously owned subsidiary. As of December 31, 2017, the potential amount of future payments CNAF could be required to pay under these guarantees was approximately $1.8 billion, which will be paid over the lifetime of the annuitants. The Parent Company does not believe a payable is likely under these guarantees, as it is the beneficiary of a trust that must be maintained at a level that approximates the discounted reserves for these annuities.

SCHEDULE III. SUPPLEMENTARY INSURANCE INFORMATION
Incorporated herein by reference to Note O to the Consolidated Financial Statements included under Item 8.
SCHEDULE IV. REINSURANCE
Incorporated herein by reference to Note G to the Consolidated Financial Statements included under Item 8.
SCHEDULE V. VALUATION AND QUALIFYING ACCOUNTS
(In millions)Balance at Beginning of PeriodCharged to Costs and ExpensesCharged to Other AccountsDeductionsBalance at End of Period
Year ended December 31, 2021
Allowance for uncollectible:
Mortgage loan receivables$26 $— $(10)$— $16 
Insurance and reinsurance receivables$54 $$— $(8)$50 
Allowance for credit losses:
Fixed maturity securities$40 $— $30 $(52)$18 
Year ended December 31, 2020
Allowance for uncollectible:
Mortgage loan receivables$$— $19 $— $26 
Insurance and reinsurance receivables$57 $$— $(7)$54 
Allowance for credit losses:
Fixed maturity securities$$— $92 $(58)$40 
Year ended December 31, 2019
Allowance for uncollectible:
Insurance and reinsurance receivables$71 $(6)$— $(8)$57 
(In millions)Balance at Beginning of Period Charged to Costs and Expenses 
Charged to Other Accounts (1)
 Deductions Balance at End of Period
Year ended December 31, 2017         
Deducted from assets:         
Allowance for doubtful accounts:         
Insurance and reinsurance receivables$83
 $(1) $
 $(9) $73
Year ended December 31, 2016         
Deducted from assets:         
Allowance for doubtful accounts:         
Insurance and reinsurance receivables$89
 $(2) $(1) $(3) $83
Year ended December 31, 2015         
Deducted from assets:         
Allowance for doubtful accounts:         
Insurance and reinsurance receivables$109
 $(12) $
 $(8) $89

(1)    Amount includes effectsEffects of foreign currency translation.translation, changes in the estimate of the allowance for uncollectible mortgage loan receivables, increases in the estimate of the allowance for credit losses on fixed maturity securities and allowances established with respect to assets purchased with credit deterioration are presented within the Charged to Other Accounts column in the table above. Write-offs of uncollectible amounts and reductions to the allowance for credit losses due to securities sold during the period or the reversal for securities that had an allowance recorded in a previous period are presented within the Deductions column in the table above.

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SCHEDULE VI. SUPPLEMENTAL INFORMATION CONCERNING PROPERTY AND CASUALTY INSURANCE OPERATIONS
As of and for the years ended December 31Consolidated Property and Casualty Operations
(In millions)202120202019
Balance Sheet Data
Deferred acquisition costs$737 $708 
Reserves for unpaid claim and claim adjustment expenses24,174 22,706 
Discount deducted from claim and claim adjustment expense reserves above (based on interest rates ranging from 3.5% to 6.4%)1,146 1,209 
Unearned premiums5,761 5,119 
Statement of Operations Data
Net written premiums$8,405 $8,059 $7,656 
Net earned premiums8,175 7,649 7,428 
Net investment income2,111 1,896 2,063 
Incurred claim and claim adjustment expenses related to current year5,970 5,793 5,356 
Incurred claim and claim adjustment expenses related to prior years(104)(119)(127)
Amortization of deferred acquisition costs1,443 1,410 1,383 
Paid claim and claim adjustment expenses4,844 5,164 5,576 
148
As of and for the years ended December 31Consolidated Property and Casualty Operations
(In millions)2017 2016 2015
Balance Sheet Data     
Deferred acquisition costs$632
 $599
 

Reserves for unpaid claim and claim adjustment expenses22,004
 22,343
 

Discount deducted from claim and claim adjustment expense reserves above (based on interest rates ranging from 3.5% to 8.0%)1,434
 1,572
 

Unearned premiums4,029
 3,762
 

Statement of Operations Data     
Net written premiums$7,069
 $6,988
 $6,962
Net earned premiums6,988
 6,924
 6,921
Net investment income1,992
 1,952
 1,807
Incurred claim and claim adjustment expenses related to current year5,201
 5,025
 4,934
Incurred claim and claim adjustment expenses related to prior years(381) (342) (255)
Amortization of deferred acquisition costs1,233
 1,235
 1,540
Paid claim and claim adjustment expenses5,341
 5,134
 4,945


Table of Contents
SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
CNA Financial Corporation
CNA Financial Corporation
Dated: February 14, 20188, 2022By/s/ Dino E. Robusto
Dino E. Robusto

Chief Executive Officer

(Principal Executive Officer)
Dated: February 14, 20188, 2022By/s/ D. Craig MenseLarry Haefner
D. Craig Mense
Executive Vice President and
Larry Haefner
Interim
Chief Financial Officer

(Principal Financial &Officer)
Dated: February 8, 2022By/s/ Amy M. Smith
Amy M. Smith
Chief
Accounting Officer
(Principal Accounting
Officer)
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated.
Dated: February 14, 20188, 2022By/s/ Dino E. Robusto
(Dino E. Robusto, Chief Executive Officer and Chairman of the Board of Directors)
Dated: February 14, 20188, 2022By/s/ Michael A. Bless
(Michael A. Bless, Director)
Dated: February 14, 20188, 2022By/s/ Jose O. Montemayor
(Jose O. Montemayor, Director)
Dated: February 14, 20188, 2022By/s/ Don M. Randel
(Don M. Randel, Director)
Dated: February 14, 20188, 2022By/s/ Andre Rice
(Andre Rice, Director)
Dated: February 14, 20188, 2022By/s/ Joseph RosenbergKenneth I. Siegel
(Joseph Rosenberg,Kenneth I. Siegel, Director)
Dated: February 14, 20188, 2022By/s/ Andrew H. Tisch
(Andrew H. Tisch, Director)
Dated: February 14, 20188, 2022By/s/ Benjamin J. Tisch
(Benjamin J. Tisch, Director)
Dated: February 8, 2022By/s/ James S. Tisch
(James S. Tisch, Director)
Dated: February 14, 20188, 2022By/s/ Marvin ZonisJane Wang
(Marvin Zonis,Jane Wang, Director)


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