UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
FORM 10-Q
[x] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended March 31, 20172018
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
(State or other jurisdiction of
incorporation or organization)
 
36-6169860
(I.R.S. Employer
Identification No.)
333 S. Wabash
Chicago, Illinois
(Address of principal executive offices)
 
60604
(Zip Code)
(312) 822-5000
(Registrant's telephone number, including area code)
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 whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large accelerated
filer [x]
 Accelerated filer [ ] 
Non-accelerated
filer [ ] (Do not check if a smaller reporting company)
 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 is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes [ ] No [x]
Indicate the number of shares outstanding of each of the issuer's classes of common stock, as of the latest practicable date.
Class Outstanding at April 27, 201726, 2018
Common Stock, Par value $2.50 270,980,108271,372,358



Item Number 
Page
Number
 
Page
Number
PART I. Financial Information
 
PART I. Financial Information
 
1.  
2.
3.
4.
PART II. Other Information
 
PART II. Other Information
 
1.
6.

PART I. Financial Information
Item 1. Condensed Consolidated Financial Statements
CNA Financial Corporation
Condensed Consolidated Statements of Operations (Unaudited)
Three months ended March 31      
(In millions, except per share data)2017 20162018 2017
Revenues      
Net earned premiums$1,645
 $1,699
$1,785
 $1,645
Net investment income545
 435
490
 545
Net realized investment gains (losses):   
Net realized investment gains   
Other-than-temporary impairment losses(2) (23)(6) (2)
Other net realized investment gains (losses)38
 (13)
Net realized investment gains (losses)36
 (36)
Other net realized investment gains18
 38
Net realized investment gains12
 36
Non-insurance warranty revenue (Note J)238
 93
Other revenues104
 97
10
 11
Total revenues2,330
 2,195
2,535
 2,330
Claims, Benefits and Expenses      
Insurance claims and policyholders’ benefits1,293
 1,408
1,339
 1,293
Amortization of deferred acquisition costs305
 307
296
 305
Non-insurance warranty expense (Note J)216
 70
Other operating expenses346
 381
303
 276
Interest43
 42
35
 43
Total claims, benefits and expenses1,987
 2,138
2,189
 1,987
Income before income tax343
 57
346
 343
Income tax (expense) benefit(83) 9
Income tax expense(55) (83)
Net income$260
 $66
$291
 $260
      
Basic earnings per share$0.96
 $0.25
$1.07
 $0.96
      
Diluted earnings per share$0.96
 $0.24
$1.07
 $0.96
      
Dividends declared per share$2.25
 $2.25
$2.30
 $2.25
      
Weighted Average Outstanding Common Stock and Common Stock Equivalents      
Basic270.7
 270.3
271.4
 270.7
Diluted271.7
 270.9
272.4
 271.7
The accompanying Notes are an integral part of these Condensed Consolidated Financial Statements (Unaudited).



CNA Financial Corporation
Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited)
Three months ended March 31      
(In millions)2017 20162018 2017
Comprehensive Income   
Comprehensive (Loss) Income   
Net income$260
 $66
$291
 $260
Other Comprehensive Income, Net of Tax   
Other Comprehensive (Loss) Income, Net of Tax   
Changes in:      
Net unrealized gains on investments with other-than-temporary impairments(4) 5
(9) (4)
Net unrealized gains on other investments67
 234
(429) 67
Net unrealized gains on investments63
 239
(438) 63
Foreign currency translation adjustment11
 14
12
 11
Pension and postretirement benefits7
 6
10
 7
Other comprehensive income, net of tax81
 259
Total comprehensive income$341
 $325
Other comprehensive (loss) income, net of tax(416) 81
Total comprehensive (loss) income$(125) $341
The accompanying Notes are an integral part of these Condensed Consolidated Financial Statements (Unaudited).

CNA Financial Corporation
Condensed Consolidated Balance Sheets
(In millions, except share data)March 31, 2017 (Unaudited) December 31,
2016
March 31, 2018 (Unaudited) December 31,
2017
Assets      
Investments:      
Fixed maturity securities at fair value (amortized cost of $38,269 and $38,361)$40,980
 $40,905
Equity securities at fair value (cost of $112 and $106)120
 110
Fixed maturity securities at fair value (amortized cost of $37,991and $38,215)$40,259
 $41,487
Equity securities at fair value (cost of $749 and $659)770
 695
Limited partnership investments2,389
 2,371
2,364
 2,369
Other invested assets40
 36
48
 44
Mortgage loans611
 591
864
 839
Short term investments1,139
 1,407
1,230
 1,436
Total investments45,279
 45,420
45,535
 46,870
Cash299
 271
282
 355
Reinsurance receivables (less allowance for uncollectible receivables of $38 and $37)4,395
 4,416
Insurance receivables (less allowance for uncollectible receivables of $47 and $46)2,144
 2,209
Reinsurance receivables (less allowance for uncollectible receivables of $29 and $29)4,408
 4,261
Insurance receivables (less allowance for uncollectible receivables of $43 and $44)2,371
 2,292
Accrued investment income431
 405
414
 411
Deferred acquisition costs626
 600
665
 634
Deferred income taxes267
 379
238
 137
Property and equipment at cost (less accumulated depreciation of $255 and $254)324
 310
Property and equipment at cost (less accumulated depreciation of $253 and $274)346
 326
Goodwill146
 145
149
 148
Other assets1,290
 1,078
3,241
 1,133
Total assets$55,201
 $55,233
$57,649
 $56,567
Liabilities 
  
 
  
Insurance reserves:   
   
Claim and claim adjustment expenses$22,260
 $22,343
$22,067
 $22,004
Unearned premiums3,912
 3,762
4,256
 4,029
Future policy benefits10,491
 10,326
10,783
 11,179
Short term debt150
 
30
 150
Long term debt2,560
 2,710
2,679
 2,708
Other liabilities (includes $41 and $50 due to Loews Corporation)
4,135
 4,123
Other liabilities (includes $147 and $143 due to Loews Corporation)6,409
 4,253
Total liabilities43,508
 43,264
46,224
 44,323
Commitments and contingencies (Notes C and F)

 



 

Stockholders' Equity 
  
 
  
Common stock ($2.50 par value; 500,000,000 shares authorized; 273,040,243 shares issued; 270,978,126 and 270,495,998 shares outstanding)683
 683
Common stock ($2.50 par value; 500,000,000 shares authorized; 273,040,243 shares issued; 271,371,607 and 271,205,390 shares outstanding)683
 683
Additional paid-in capital2,161
 2,173
2,173
 2,175
Retained earnings9,006
 9,359
9,028
 9,414
Accumulated other comprehensive income(92) (173)
Treasury stock (2,062,117 and 2,544,245 shares), at cost(65) (73)
Accumulated other comprehensive (loss) income(400) 32
Treasury stock (1,668,636 and 1,834,853 shares), at cost
(59) (60)
Total stockholders’ equity11,693
 11,969
11,425
 12,244
Total liabilities and stockholders' equity$55,201
 $55,233
$57,649
 $56,567
The accompanying Notes are an integral part of these Condensed Consolidated Financial Statements (Unaudited).

CNA Financial Corporation
Condensed Consolidated Statements of Cash Flows (Unaudited)
Three months ended March 31      
(In millions)2017 20162018 2017
Cash Flows from Operating Activities      
Net income$260
 $66
$291
 $260
Adjustments to reconcile net income to net cash flows provided by operating activities:      
Deferred income tax expense72
 55
29
 72
Trading portfolio activity(6) (3)(1) (6)
Net realized investment (gains) losses(36) 36
Net realized investment gains(12) (36)
Equity method investees38
 262
(2) 38
Net amortization of investments(12) (4)(15) (12)
Depreciation and amortization21
 21
20
 21
Changes in:      
Receivables, net89
 (317)(215) 89
Accrued investment income(26) (22)(3) (26)
Deferred acquisition costs(24) (23)(29) (24)
Insurance reserves135
 511
311
 135
Other assets(37) (89)(72) (37)
Other liabilities(206) (168)(99) (206)
Other, net14
 9
15
 14
Total adjustments22
 268
(73) 22
Net cash flows provided by operating activities
282
 334
Net cash flows provided by operating activities218
 282
Cash Flows from Investing Activities    
  
Dispositions:      
Fixed maturity securities - sales1,359
 1,722
2,576
 1,359
Fixed maturity securities - maturities, calls and redemptions823
 490
531
 823
Equity securities16
 4
7
 16
Limited partnerships57
 89
69
 57
Mortgage loans3
 22
11
 3
Purchases:      
Fixed maturity securities(2,097) (2,238)(2,690) (2,097)
Equity securities(7) 
(98) (7)
Limited partnerships(18) (169)(62) (18)
Mortgage loans(23) (19)(36) (23)
Change in other investments(1) 
(4) (1)
Change in short term investments271
 16
208
 271
Purchases of property and equipment(30) (33)(38) (30)
Disposals of property and equipment
 107
Other, net1
 
15
 1
Net cash flows provided (used) by investing activities
$354
 $(9)
Net cash flows provided by investing activities489
 354
The accompanying Notes are an integral part of these Condensed Consolidated Financial Statements (Unaudited).

Three months ended March 31      
(In millions)2017 20162018 2017
Cash Flows from Financing Activities      
Dividends paid to common stockholders$(609) $(609)$(624) $(609)
Proceeds from the issuance of debt
 498
Repayment of debt
 (358)(150) 
Other, net
 
(7) 
Net cash flows used by financing activities(609)
(469)(781)
(609)
Effect of foreign exchange rate changes on cash1
 (1)1
 1
Net change in cash28
 (145)(73) 28
Cash, beginning of year271
 387
355
 271
Cash, end of period$299
 $242
$282
 $299
The accompanying Notes are an integral part of these Condensed Consolidated Financial Statements (Unaudited).


CNA Financial Corporation
Condensed Consolidated Statements of Stockholders' Equity (Unaudited)
Three months ended March 31      
(In millions)2017 20162018 2017
Common Stock      
Balance, beginning of period$683
 $683
$683
 $683
Balance, end of period683
 683
683
 683
Additional Paid-in Capital      
Balance, beginning of period2,173
 2,153
2,175
 2,173
Stock-based compensation(12) (7)(2) (12)
Balance, end of period2,161
 2,146
2,173
 2,161
Retained Earnings      
Balance, beginning of period9,359
 9,313
Balance, beginning of period, as previously reported9,414
 9,359
Cumulative effect adjustments from changes in accounting guidance, net of tax(50) 
Balance, beginning of period, as adjusted9,364
 9,359
Dividends paid to common stockholders(613) (609)(627) (613)
Net income260
 66
291
 260
Balance, end of period9,006
 8,770
9,028
 9,006
Accumulated Other Comprehensive Loss   
Balance, beginning of period(173) (315)
Other comprehensive income81
 259
Accumulated Other Comprehensive (Loss)   
Balance, beginning of period, as previously reported32
 (173)
Cumulative effect adjustments from changes in accounting guidance, net of tax(16) 
Balance, beginning of period, as adjusted16
 (173)
Other comprehensive (loss) income(416) 81
Balance, end of period(92) (56)(400) (92)
Treasury Stock      
Balance, beginning of period(73) (78)(60) (73)
Stock-based compensation8
 5
1
 8
Balance, end of period(65) (73)(59) (65)
Total stockholders' equity$11,693
 $11,470
$11,425
 $11,693
The accompanying Notes are an integral part of these Condensed Consolidated Financial Statements (Unaudited).



CNA Financial Corporation
Notes to Condensed Consolidated Financial Statements (Unaudited)
Note A. General
Basis of Presentation
The Condensed 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 90%89% of the outstanding common stock of CNAF as of March 31, 2017.2018.
The accompanying Condensed 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. Certain financial information that is normally included in annual financial statements prepared in accordance with GAAP, including certain financial statement notes, is not required for interim reporting purposes and has been condensed or omitted. These statements should be read in conjunction with the Consolidated Financial Statements and notes thereto included in CNAF's Annual Report on Form 10-K filed with the Securities and Exchange Commission for the year ended December 31, 2016,2017, including the summary of significant accounting policies in Note A. The preparation of Condensed 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 Condensed Consolidated Financial Statements and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates.
The interim financial data as of March 31, 20172018 and for the three months ended March 31, 20172018 and 20162017 is unaudited. However, in the opinion of management, the interim data includes all adjustments, including normal recurring adjustments, necessary for a fair statement of the Company's results for the interim periods. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the full year.
Recently Adopted Accounting Standards Updates (ASU)
ASU 2014-09: In March 2016,May 2014, 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 of awards as either equity or liabilities and classification on the statement of cash flows. As of January 1, 2017, the Company adopted the updated accounting guidanceand began recognizing excess tax benefits or deficiencies on vesting or settlement of awards as an income tax benefit or expense within net income, instead of additional paid-in capital as required under previous guidance. The related cash flows are now classified within operating activities. As a result of this change, excess tax benefits are no longer included in assumed proceeds under the treasury stock method of calculating earnings per share. The impact of the accounting change resulted in a decrease of $3 million to income tax expense for the three months ended March 31, 2017.

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
On January 1, 2018, the Company adopted the updated guidance using the modified retrospective method applied retrospectively or through a cumulative effect adjustment to retained earnings atall contracts which were not completed as of the date of adoption. As insurance contracts are outadoption, with the cumulative effect recognized as an adjustment to the opening balance of scope,Retained earnings. Prior period amounts have not been adjusted and continue to be reported in accordance with the Company anticipatesprevious accounting guidance.
Under the primary change will be tonew guidance, revenue recognition for certain of ouron warranty products and services. Theservices will be recognized more slowly compared to the historic revenue recognition pattern. In addition, for warranty products in which the Company has not madeacts as the principal in the transaction, Non-insurance warranty revenue and Non-insurance warranty expense are increased to reflect the gross amount paid by consumers, including the retail seller’s markup which is considered a decisioncommission to the Company's agent. This gross-up of revenue and expense also resulted in an increase to Other assets and Other liabilities on the methodCompany's Condensed Consolidated Balance Sheets as the revenue and expense are recognized over the actuarially determined expected claims emergence pattern.

The cumulative effect changes to the Condensed Consolidated Balance Sheet for the adoption of adoption and is currently evaluating the effect the updated guidance will haveon January 1, 2018 were as follows:
(In millions)Balance as of December 31, 2017 Adjustments Due to Adoption of Topic 606 Balance as of January 1, 2018
Other assets$1,133
 $1,882
 $3,015
Other liabilities4,253
 1,969
 6,222
Deferred income taxes137
 21
 158
Retained earnings9,414
 (66) 9,348
The impact of adoption on the Company’s financial statements, but we do not currently believe Condensed Consolidated Statement of Operations and Balance Sheet as of and for the three months ended March 31, 2018 was as follows:
Three months ended March 312018 Prior to Adoption Effect of Adoption 2018 as Reported
(In millions)
Statement of operations:     
Non-insurance warranty revenue$101
 $137
 $238
Total revenues2,398
 137
 2,535
      
Non-insurance warranty expense78
 138
 216
Total claims, benefits and expenses2,051
 138
 2,189
      
Income before income tax347
 (1) 346
Income tax expense(55) 
 (55)
Net income292
 (1) 291
      
Balance sheet(1):


    
Other assets$3,154
 $87
 $3,241
Other liabilities6,321
 88
 6,409
Deferred income taxes238
 
 238
Retained earnings9,029
 (1) 9,028
(1)2018 Prior to Adoption includes the cumulative effect adjustment at adoption.
See Note J to the Condensed Consolidated Financial Statements for additional information regarding non-insurance revenues from contracts with customers.

ASU 2014-09 will have a material effect on the Company's results of operations or financial position.2016-01:
In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments-OverallInstruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. LiabilitiesThe 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 is currently evaluatingprimarily changes the effect the guidance will have on the Company's financial statements, and expects the primary change for the Company to be the requirementmodel for equity investmentssecurities by requiring changes in the fair value of equity securities (except those accounted for under the equity method of accounting, orthose without readily determinable fair values and those that result in consolidation of the investee) to be measured atrecognized through the income statement. The Company adopted the updated guidance on January 1, 2018 and recognized a cumulative effect adjustment that increased beginning Retained earnings by $28 million, net of tax. Prior period amounts have not been adjusted and continue to be reported in accordance with the previous accounting guidance.
For the three months ended March 31, 2018, the Company recognized a $15 million pretax loss within Net realized investment gains (losses) for the change in fair value withof non-redeemable preferred stock and less than a $1 million pretax gain within Net investment income for the change in fair value of common stock as a result of this change. For the three months ended March 31, 2017 a $1 million decrease in the fair value of common stock and a $5 million increase in the fair value of non-redeemable preferred stock was recognized in Other comprehensive income. 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 are no longer discretionary, 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 realized investments gains (losses). During the first quarter of 2018, the Company increased its common stock with the intention of holding the securities primarily for market appreciation. As such, the changes in the fair value of these securities are recorded through Net investment income.
ASU 2017-07: 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 Company adopted the updated guidance effective January 1, 2018. The guidance was 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 Condensed Consolidated Statements of Operations and in its disclosures. The Company expanded the related footnote disclosure, Note G to the Condensed Consolidated Financial Statements, to disclose the amount of service cost and non-service cost components of net periodic benefit cost and the line items in the Condensed Consolidated Statements of Operations in which such amounts are reported. The change limiting the costs eligible for capitalization is not material to the Company’s results of operations or financial position.
ASU 2018-02: In February 2018, the FASB issued ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. GAAP requires the remeasurement of deferred tax assets and liabilities due to a change in the tax rate to be included in Net income, even if the related income tax effects were originally recognized in Accumulated other comprehensive income (AOCI). The ASU allows a reclassification from AOCI to Retained earnings for stranded tax effects resulting from the new U.S. Federal corporate income tax rate enacted on December 22, 2017. The Company early adopted the updated guidance effective January 1, 2018 and elected to reclassify the stranded income tax effects relating to the reduction in the Federal corporate income tax rate from AOCI to Retained earnings at the beginning of the period of adoption. The net income.impact of the accounting change resulted in a $12 million increase in AOCI and a corresponding decrease in Retained earnings. The $12 million increase in AOCI is comprised of a $142 million increase in net unrealized gains (losses) on investments partially offset by a $130 million decrease in unrecognized pension and postretirement benefits.
The Company releases tax effects from AOCI utilizing the security-by-security approach for Net unrealized gains (losses) on investments with Other-than-temporary impairment (OTTI) 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 OCI.

Accounting Standards Pending Adoption
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): Measurement of 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.
InIncome Tax Reform Update
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,” was signed into law (Tax Reform Legislation).
Shortly after enactment, the Securities and Exchange Commission Staff issued Staff Accounting Bulletin No. 118 (SAB 118) to provide guidance on accounting for the Tax Reform Legislation impacts when the measurements of the income tax effects are complete, incomplete, or incomplete but for which a provisional amount can be estimated. SAB 118 permits the recognition of provisional amounts, and adjustments to provisional amounts, in subsequent reporting periods within the one year measurement period.
The Company has reflected the following incomplete but reasonably estimated provisional items in Deferred income taxes on the Condensed Consolidated Balance Sheet at March 2017,31, 2018. The effects of 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 changesadjustments to the presentation ofCompany’s provisional amounts for the components of net periodic benefit cost on thethree months ended March 31, 2018 did not impact 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. tax expense.
The Company is currently evaluatinghas recalculated its insurance reserves and the effecttransition adjustment from existing law.
The Company has recalculated amounts under special accounting method provisions for recognizing income for Federal income tax purposes no later than for financial accounting purposes and the guidance willtransition adjustment from existing law.
The Company has not recorded current or deferred taxes with respect to the international provisions since it does not expect to have on the Company's financial statements.inclusions in U.S. taxable income for certain earnings of foreign subsidiaries in future years.

Note B. Earnings (Loss) Per Share
Earnings (loss) per share is based on the weighted average number of outstanding common shares. Basic earnings (loss) per share excludes the effectimpact 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 three months ended March 31, 2018 and 2017, and 2016, approximately 9741,009 thousand and 542974 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, approximately 1489 thousand and 180148 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.



Note C.C. Investments
The significant components of Net investment income are presented in the following table.
Three months ended March 31      
(In millions)2017 20162018 2017
Fixed maturity securities$455
 $446
$446
 $455
Equity securities1
 3
10
 1
Limited partnership investments90
 (14)30
 90
Mortgage loans7
 9
11
 7
Short term investments3
 3
6
 3
Trading portfolio2
 2
2
 2
Other1
 

 1
Gross investment income559
 449
505
 559
Investment expense(14) (14)(15) (14)
Net investment income$545
 $435
$490
 $545
During the three months ended March 31, 2018, less than $1 million of Net investment income was recognized due to the change in fair value of common stock still held as of March 31, 2018.
Net realized investment gains (losses) are presented in the following table.
Three months ended March 31      
(In millions)2017 20162018 2017
Net realized investment gains (losses):      
Fixed maturity securities:      
Gross realized gains$49
 $45
$69
 $49
Gross realized losses(17) (62)(51) (17)
Net realized investment gains (losses) on fixed maturity securities32
 (17)18
 32
Equity securities:   
Gross realized gains
 
Gross realized losses
 (5)
Net realized investment gains (losses) on equity securities
 (5)
Equity securities(15) 
Derivatives1
 (7)5
 1
Short term investments and other3
 (7)4
 3
Net realized investment gains (losses)$36
 $(36)$12
 $36
Net realized investment losses forDuring the three months ended March 31, 2016 include $82018, $15 million relatedof Net realized investment losses were recognized due to the first quarter 2016 redemptionchange in fair value of the Company's $350 million senior notes due August 2016.non-redeemable preferred stock still held as of March 31, 2018.
The components of Other-than-temporary impairment (OTTI)OTTI losses recognized in earnings by asset type are presented in the following table.
Three months ended March 31   
(In millions)2017 2016
Fixed maturity securities available-for-sale:
  
Corporate and other bonds$2
 $16
Asset-backed:   
Residential mortgage-backed
 
Other asset-backed
 2
Total asset-backed
 2
Total fixed maturity securities available-for-sale2
 18
Equity securities available-for-sale -- Common stock
 5
OTTI losses recognized in earnings$2
 $23
Three months ended March 31   
(In millions)2018 2017
Fixed maturity securities available-for-sale:
  
Corporate and other bonds$5
 $2
Asset-backed1
 
OTTI losses recognized in earnings$6
 $2

The following tables present a summary of fixed maturity and equity securities.
March 31, 2017
Cost or
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair
Value
 
Unrealized
OTTI
Losses (Gains)
March 31, 2018 (1)
Cost or
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair
Value
 
Unrealized
OTTI
Losses (Gains)
(In millions)
Cost or
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair
Value
 
Unrealized
OTTI
Losses (Gains)
 
Fixed maturity securities available-for-sale:          
Corporate and other bonds$17,838
 $1,428
 $37
 $19,229
 $(1)$17,538
 $1,177
 $115
 $18,600
 $
States, municipalities and political subdivisions12,261
 1,219
 31
 13,449
 (12)11,682
 1,205
 12
 12,875
 
Asset-backed:                  
Residential mortgage-backed4,672
 121
 50
 4,743
 (27)5,050
 83
 78
 5,055
 (27)
Commercial mortgage-backed1,902
 52
 19
 1,935
 
1,948
 29
 22
 1,955
 
Other asset-backed1,043
 10
 4
 1,049
 
1,185
 10
 7
 1,188
 
Total asset-backed7,617
 183
 73
 7,727
 (27)8,183
 122
 107
 8,198
 (27)
U.S. Treasury and obligations of government-sponsored enterprises95
 8
 
 103
 
124
 2
 7
 119
 
Foreign government419
 14
 1
 432
 
448
 7
 5
 450
 
Redeemable preferred stock19
 1
 
 20
 
9
 1
 
 10
 
Total fixed maturity securities available-for-sale38,249
 2,853
 142
 40,960
 $(40)37,984
 2,514
 246
 40,252
 $(27)
Total fixed maturity securities trading20
 

 

 20
  7
     7
  
Equity securities available-for-sale:         
Common stock20
 5
 
 25
  
Preferred stock92
 5
 2
 95
  
Total equity securities available-for-sale112
 10
 2
 120
  
Total$38,381
 $2,863
 $144
 $41,100
  
Total fixed maturity securities$37,991
 $2,514
 $246
 $40,259
  

December 31, 2016
Cost or
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair
Value
 
Unrealized
OTTI
Losses (Gains)
December 31, 2017
Cost or
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair
Value
 
Unrealized
OTTI
Losses (Gains)
(In millions)
Cost or
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair
Value
 
Unrealized
OTTI
Losses (Gains)
 
Fixed maturity securities available-for-sale:          
Corporate and other bonds$17,711
 $1,323
 $76
 $18,958
 $(1)$17,210
 $1,625
 $28
 $18,807
 $
States, municipalities and political subdivisions12,060
 1,213
 33
 13,240
 (16)12,478
 1,551
 2
 14,027
 (11)
Asset-backed:                  
Residential mortgage-backed5,004
 120
 51
 5,073
 (28)5,043
 109
 32
 5,120
 (27)
Commercial mortgage-backed2,016
 48
 24
 2,040
 
1,840
 46
 14
 1,872
 
Other asset-backed1,022
 8
 5
 1,025
 
1,083
 16
 5
 1,094
 
Total asset-backed8,042
 176
 80
 8,138
 (28)7,966
 171
 51
 8,086
 (27)
U.S. Treasury and obligations of government-sponsored enterprises83
 10
 
 93
 
111
 2
 4
 109
 
Foreign government435
 13
 3
 445
 
437
 9
 2
 444
 
Redeemable preferred stock18
 1
 
 19
 
10
 1
 
 11
 
Total fixed maturity securities available-for-sale38,349
 2,736
 192
 40,893
 $(45)38,212
 3,359
 87
 41,484
 $(38)
Total fixed maturity securities trading12
 

 

 12
  3
     3
  
Equity securities available-for-sale:                  
Common stock13
 6
 
 19
  21
 7
 1
 27
  
Preferred stock93
 2
 4
 91
  638
 31
 1
 668
  
Total equity securities available-for-sale106
 8
 4
 110
  659
 38
 2
 695
  
Total$38,467
 $2,744
 $196
 $41,015
  
Total fixed maturity and equity securities$38,874
 $3,397
 $89
 $42,182
  
(1)
As of January 1, 2018, the Company adopted ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The change in fair value of equity securities is now recognized through the income statement. See Note A to the Condensed Consolidated Financial Statements for additional information.


The net unrealized gains on investments included in the tables above are recorded as a component of Accumulated other comprehensive income (AOCI).AOCI. When presented in AOCI, these amounts are net of tax and any required Shadow Adjustments. To the extent that unrealized gains on fixed income securities supporting certain products within the Life & Group Non-Core segment would result in a premium deficiency if realized, a related increase in Insurance reserves is recorded, net of tax, as a reduction of net unrealized gains through Other comprehensive income (loss) (Shadow Adjustments). As of March 31, 20172018 and December 31, 2016,2017, the net unrealized gains on investments included in AOCI were correspondingly reduced by Shadow Adjustments of $1,060$1,338 million and $1,014$1,411 million.


The following tables present the estimated fair value and gross unrealized losses of fixed maturity and equity securities in a gross unrealized loss position by the length of time in which the securities have continuously been in that position.
Less than 12 Months 12 Months or Longer TotalLess than 12 Months 12 Months or Longer Total
March 31, 2017
Estimated
Fair Value
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 
Gross
Unrealized
Losses
March 31, 2018 (1)
Estimated
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
 
Fixed maturity securities available-for-sale:            
Corporate and other bonds$1,915
 $29
 $134
 $8
 $2,049
 $37
$4,229
 $104
 $146
 $11
 $4,375
 $115
States, municipalities and political subdivisions845
 31
 33
 
 878
 31
962
 12
 3
 
 965
 12
Asset-backed:                      
Residential mortgage-backed2,188
 44
 170
 6
 2,358
 50
2,570
 55
 504
 23
 3,074
 78
Commercial mortgage-backed590
 15
 139
 4
 729
 19
668
 11
 200
 11
 868
 22
Other asset-backed256
 4
 28
 
 284
 4
441
 5
 15
 2
 456
 7
Total asset-backed3,034
 63
 337
 10
 3,371
 73
3,679
 71
 719
 36
 4,398
 107
U.S. Treasury and obligations of government-sponsored enterprises31
 
 
 
 31
 
59
 4
 26
 3
 85
 7
Foreign government89
 1
 
 
 89
 1
214
 5
 4
 
 218
 5
Total fixed maturity securities available-for-sale5,914
 124
 504
 18
 6,418
 142
Equity securities available-for-sale:        

 

Common stock2
 
 
 
 2
 
Preferred stock15
 2
 
 
 15
 2
Total equity securities available-for-sale17
 2
 
 
 17
 2
Total$5,931

$126

$504

$18

$6,435

$144
$9,143
 $196
 $898
 $50
 $10,041
 $246

Less than 12 Months 12 Months or Longer TotalLess 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, 2017
Estimated
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
 
Fixed maturity securities available-for-sale:            
Corporate and other bonds$2,615
 $61
 $254
 $15
 $2,869
 $76
$1,354
 $21
 $168
 $7
 $1,522
 $28
States, municipalities and political subdivisions959
 32
 23
 1
 982
 33
72
 1
 85
 1
 157
 2
Asset-backed:                      
Residential mortgage-backed2,136
 44
 201
 7
 2,337
 51
1,228
 5
 947
 27
 2,175
 32
Commercial mortgage-backed756
 22
 69
 2
 825
 24
403
 4
 212
 10
 615
 14
Other asset-backed398
 5
 24
 
 422
 5
248
 3
 18
 2
 266
 5
Total asset-backed3,290
 71
 294
 9
 3,584
 80
1,879
 12
 1,177
 39
 3,056
 51
U.S. Treasury and obligations of government-sponsored enterprises5
 
 
 
 5
 
49
 2
 21
 2
 70
 4
Foreign government108
 3
 
 
 108
 3
166
 2
 4
 
 170
 2
Total fixed maturity securities available-for-sale6,977
 167
 571
 25
 7,548
 192
3,520
 38
 1,455
 49
 4,975
 87
Equity securities available-for-sale -- Preferred stock12
 
 13
 4
 25
 4
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$6,989
 $167
 $584
 $29
 $7,573
 $196
$3,620
 $40
 $1,455
 $49
 $5,075
 $89
(1)
As of January 1, 2018, the Company adopted ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The change in fair value of equity securities is now recognized through the income statement. See Note A to the Condensed Consolidated Financial Statements for additional information.

Based on current facts and circumstances, the Company believes the unrealized losses presented in the March 31, 20172018 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 OTTI losses to be recorded as of March 31, 2017.2018.
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 March 31, 20172018 and 20162017 and for which a portion of an OTTI loss was recognized in Other comprehensive income (loss).
Three months ended March 31      
(In millions)2017 20162018 2017
Beginning balance of credit losses on fixed maturity securities$36
 $53
$27
 $36
Reductions for securities sold during the period(4) (5)(2) (4)
Ending balance of credit losses on fixed maturity securities$32
 $48
$25
 $32
Contractual Maturity
The following table presents available-for-sale fixed maturity securities by contractual maturity.
March 31, 2017 December 31, 2016March 31, 2018 December 31, 2017
(In millions)
Cost or
Amortized
Cost
 
Estimated
Fair
Value
 
Cost or
Amortized
Cost
 
Estimated
Fair
Value
Cost or
Amortized
Cost
 
Estimated
Fair
Value
 
Cost or
Amortized
Cost
 
Estimated
Fair
Value
Due in one year or less$1,655
 $1,701
 $1,779
 $1,828
$1,323
 $1,343
 $1,135
 $1,157
Due after one year through five years7,539
 7,918
 7,566
 7,955
8,277
 8,495
 8,165
 8,501
Due after five years through ten years15,645
 16,176
 15,892
 16,332
15,802
 16,093
 16,060
 16,718
Due after ten years13,410
 15,165
 13,112
 14,778
12,582
 14,321
 12,852
 15,108
Total$38,249
 $40,960
 $38,349
 $40,893
$37,984
 $40,252
 $38,212
 $41,484
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.
Derivative Financial Instruments
The Company holds an embedded derivative on a funds withheld liability with a notional value of $172$163 million and $174$167 million as of March 31, 20172018 and December 31, 20162017 and a fair value of $2$1 million and $3$(3) million as of March 31, 20172018 and December 31, 2016.2017. The embedded derivative on the funds withheld liability is accounted for separately and reported with the funds withheld liability in Other liabilities on the Condensed Consolidated Balance Sheets.
Investment Commitments
As of March 31, 2017,2018, the Company had committed approximately $394$428 million to future capital calls from various third-party limited partnership investments in exchange for an ownership interest in the related partnerships.
As of March 31, 2017,2018, the Company had mortgage loan commitments of $46$47 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 March 31, 2017,2018, the Company had commitments to purchase or fund additional amounts of $217$198 million and sell $196$162 million under the terms of such securities.


Note D.D. 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, 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.

Assets and Liabilities Measured at Fair Value
Assets and liabilities measured at fair value on a recurring basis are presented in the following tables.
March 31, 2017      
Total
Assets/Liabilities
at Fair Value
(In millions)Level 1 Level 2 Level 3 
Assets       
Fixed maturity securities:       
Corporate and other bonds$
 $19,125
 $121
 $19,246
States, municipalities and political subdivisions
 13,451
 1
 13,452
Asset-backed:       
Residential mortgage-backed
 4,617
 126
 4,743
Commercial mortgage-backed
 1,922
 13
 1,935
Other asset-backed
 932
 117
 1,049
Total asset-backed
 7,471
 256
 7,727
U.S. Treasury and obligations of government-sponsored enterprises103
 
 
 103
Foreign government
 432
 
 432
Redeemable preferred stock20
 
 
 20
Total fixed maturity securities123
 40,479
 378
 40,980
Equity securities101
 
 19
 120
Other invested assets
 5
 
 5
Short term investments225
 829
 
 1,054
Life settlement contracts, included in Other assets
 
 46
 46
Total assets$449
 $41,313
 $443
 $42,205
Liabilities     
  
Other liabilities$
 $(2) $
 $(2)
Total liabilities$
 $(2) $
 $(2)
Corporate bonds and other includes obligations of the U.S. Treasury, government-sponsored enterprises and foreign governments and redeemable preferred stock.
December 31, 2016      
Total
Assets/Liabilities
at Fair Value
(In millions)Level 1 Level 2 Level 3 
Assets       
Fixed maturity securities:       
Corporate and other bonds$
 $18,840
 $130
 $18,970
States, municipalities and political subdivisions
 13,239
 1
 13,240
Asset-backed:       
Residential mortgage-backed
 4,944
 129
 5,073
Commercial mortgage-backed
 2,027
 13
 2,040
Other asset-backed
 968
 57
 1,025
Total asset-backed
 7,939
 199
 8,138
U.S. Treasury and obligations of government-sponsored enterprises93
 
 
 93
Foreign government
 445
 
 445
Redeemable preferred stock19
 
 
 19
Total fixed maturity securities112
 40,463
 330
 40,905
Equity securities91
 
 19
 110
Other invested assets
 5
 
 5
Short term investments475
 853
 
 1,328
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)
March 31, 2018      
Total
Assets/Liabilities
at Fair Value
(In millions)Level 1 Level 2 Level 3 
Assets       
Fixed maturity securities:       
Corporate bonds and other$167
 $18,917
 $100
 $19,184
States, municipalities and political subdivisions
 12,876
 1
 12,877
Asset-backed
 7,919
 279
 8,198
Total fixed maturity securities167
 39,712
 380
 40,259
Equity securities:       
Common stock83
 
 4
 87
Non-redeemable preferred stock67
 602
 14
 683
Total equity securities150
 602
 18
 770
Short term and other156
 978
 
 1,134
Total assets$473
 $41,292
 $398
 $42,163
Liabilities     
  
Other liabilities$
 $(1) $
 $(1)
Total liabilities$
 $(1) $
 $(1)
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 securities:       
Common stock23
 
 4
 27
Non-redeemable preferred stock68
 584
 16
 668
Total 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

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)
Balance as of
January 1,
2017
 Net realized investment gains (losses) and net change in unrealized appreciation (depreciation) included in net income (loss)* Net change in unrealized appreciation (depreciation) included in Other comprehensive income (loss) Purchases Sales Settlements 
Transfers into
Level 3
 
Transfers out
of Level 3
 
Balance as of
March 31,
2017
 Unrealized gains (losses) on Level 3 assets and liabilities held as of March 31, 2017 recognized in Net income (loss)*
Fixed maturity securities:                   
Corporate and other bonds$130
 $
 $1
 $5
 $(1) $(14) $
 $
 $121
 $
States, municipalities and political subdivisions1
 
 
 
 
 
 
 
 1
 
Asset-backed:                 
  
Residential mortgage-backed129
 1
 2
 
 
 (6) 
 
 126
 
Commercial mortgage-backed13
 
 
 
 
 
 
 
 13
 
Other asset-backed57
 (1) 
 38
 
 
 28
 (5) 117
 
Total asset-backed199
 
 2
 38
 
 (6) 28
 (5) 256
 
Total fixed maturity securities330
 
 3
 43
 (1) (20) 28
 (5) 378
 
Equity securities19
 
 1
 1
 (2) 
 
 
 19
 
Derivative financial instruments
 1
 
 
 (1) 
 
 
 
 
Life settlement contracts58
 6
 
 
 (13) (5) 
 
 46
 
Total$407
 $7
 $4
 $44
 $(17) $(25) $28
 $(5) $443
 $
Level 3
(In millions)
Corporate bonds and other States, municipalities and political subdivisions Asset-backed Equity securities Derivative financial instruments Total
Balance as of January 1, 2018$98
 $1
 $335
 $20
 $
 $454
Total realized and unrealized investment gains (losses):          

Reported in Net realized investment gains (losses)(1) 
 7
 (2) 
 4
Reported in Net investment income
 
 
 
 
 
Reported in Other comprehensive income
 
 (5) 
 
 (5)
Total realized and unrealized investment gains (losses)(1) 
 2
 (2) 
 (1)
Purchases
 
 30
 
 
 30
Sales
 
 (72) 
 
 (72)
Settlements(2) 
 (6) 
 
 (8)
Transfers into Level 35
 
 
 
 
 5
Transfers out of Level 3
 
 (10) 
 
 (10)
Balance as of March 31, 2018$100
 $1
 $279
 $18
 $
 $398
Unrealized gains (losses) on Level 3 assets and liabilities held as of March 31, 2018 recognized in Net income (loss)$
 $
 $
 $(2) $
 $(2)

Level 3
(In millions)
Balance as of
January 1,
2016
 Net realized investment gains (losses) and net change in unrealized appreciation (depreciation) included in net income (loss)* Net change in unrealized appreciation (depreciation) included in Other comprehensive income (loss) Purchases Sales Settlements 
Transfers into
Level 3
 
Transfers out
of Level 3
 
Balance as of
March 31,
2016
 Unrealized gains (losses) on Level 3 assets and liabilities held as of March 31, 2016 recognized in Net income (loss)*
Fixed maturity securities:                   
Corporate and other bonds$168
 $(1) $4
 $53
 $(16) $(3) $
 $(12) $193
 $
States, municipalities and political subdivisions2
 
 
 
 
 
 
 
 2
 
Asset-backed:                 
  
Residential mortgage-backed134
 1
 
 
 
 (5) 
 (2) 128
 
Commercial mortgage-backed22
 
 
 9
 
 
 
 (4) 27
 
Other asset-backed53
 
 
 
 
 
 2
 (5) 50
 
Total asset-backed209
 1
 
 9
 
 (5) 2
 (11) 205
 
Total fixed maturity securities379
 
 4
 62
 (16) (8) 2
 (23) 400
 
Equity securities20
 
 (1) 
 
 
 
 
 19
 
Life settlement contracts74
 4
 
 
 
 (6) 
 
 72
 1
Total$473
 $4
 $3
 $62
 $(16) $(14) $2
 $(23) $491
 $1
Level 3
(In millions)
Corporate bonds and other States, municipalities and political subdivisions Asset-backed Equity securities Derivative financial instruments Life settlement contracts Total
Balance as of January 1, 2017$130
 $1
 $199
 $19
 $
 $58
 $407
Total realized and unrealized investment gains (losses):             
Reported in Net realized investment gains (losses)
 
 
 
 1
 
 1
Reported in Other revenues
 
 
 
 
 6
 6
Reported in Other comprehensive income1
 
 2
 1
 
 
 4
Total realized and unrealized investment gains (losses)1
 
 2
 1
 1
 6
 11
Purchases5
 
 38
 1
 
 
 44
Sales(1) 
 
 (2) (1) (13) (17)
Settlements(14) 
 (6) 
 
 (5) (25)
Transfers into Level 3
 
 28
 
 
 
 28
Transfers out of Level 3
 
 (5) 
 
 
 (5)
Balance as of March 31, 2017$121
 $1
 $256
 $19
 $
 $46
 $443
Unrealized gains (losses) on Level 3 assets and liabilities held as of March 31, 2017 recognized in Net income (loss)$
 $
 $
 $
 $
 $
 $

*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 LiabilitiesCondensed Consolidated 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.
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 three months ended March 31, 20172018 there were $29 million of transfers from Level 2 to Level 1 and 2016no transfers from Level 1 to Level 2. During the three months ended March 31, 2017 there were no transfers between Level 1 and Level 2. The Company's policy is to recognize transfers between levels at the beginning of quarterly reporting periods.
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 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 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 inputs that are not market observable.




Short Term and Other Invested Assets
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 March 31, 2017 and December 31, 2016, there were approximately $35 million and $31 million respectively of overseas deposits within other 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.
Short Term Investments
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 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 Condensed Consolidated Balance Sheets because certain short term investments, such as time deposits, are not measured at fair value.
As of March 31, 2018 and December 31, 2017, there were approximately $42 million and $39 million of overseas deposits within other 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
The Company accounts forsold its investment in life settlement contracts usingto a third party in 2017. The valuation of the fair value method. 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 contractthe 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.
sale. The entire portfolio of life settlement contracts, which is included within the Life and Group Non-Core 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. The definitive Purchase and Sale Agreement (PSA) related 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 is recognized as the owner and beneficiary of each individual life settlement contract by the life insurance company that issued the policy. A number of contracts have been released from escrow as of March 31, 2017. The Company derecognized these 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 is included within Other assets on the Condensed Consolidated Balance Sheets and interest income is accreted to the principal balance of the note receivable. The remaining contracts still in escrow have not been derecognized and were measured at the fair value per the PSA.
The fair value of the Company's investments in life settlement contracts were $46 million and $58 million as of March 31, 2017 and December 31, 2016, and are included in Other assets on the Condensed Consolidated Balance Sheets. Despite the sale, the contracts have been classified as Level 3 as there iswas not an active market for life settlement contracts. 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 Condensed 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.

Derivative Financial Investments
Level 2 securitiesinvestments 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 valued with observable inputs.





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 was based on the terms of the sale of the contracts to a third party, therefore, the contracts are not included in the table below.
March 31, 2017
Estimated Fair Value
(In millions)
 Valuation Technique(s) Unobservable Input(s) 
Range
 (Weighted Average)
March 31, 2018
Estimated Fair Value
(In millions)
 Valuation Technique(s) Unobservable Input(s) 
Range
 (Weighted Average)
Fixed maturity securities$122
 Discounted cash flow Credit spread 2% - 40% (4%)$133
 Discounted cash flow Credit spread 1% - 12% (3%)
December 31, 2016Estimated Fair Value
(In millions)
 Valuation Technique(s) Unobservable Input(s) 
Range
 (Weighted Average)
December 31, 2017Estimated 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%)$136
 Discounted cash flow Credit spread 1% - 12% (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 Condensed Consolidated Balance Sheets are presented in the following tables.
March 31, 2017
Carrying
Amount
 Estimated Fair Value
March 31, 2018
Carrying
Amount
 Estimated Fair Value
(In millions)
Carrying
Amount
 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total
Assets                 
Mortgage loans$611
 $
 $
 $616
 $616
$864
 $
 $
 $856
 $856
Note receivable10
 
 
 10
 10
34
 
 

34
 34
Liabilities                  
Short term debt$150
 $
 $156
 $
 $156
$30
 $
 $30
 $
 $30
Long term debt2,560
 
 2,811
 
 2,811
2,679
 
 2,786
 
 2,786
December 31, 2016Carrying
Amount
 Estimated Fair Value
December 31, 2017Carrying
Amount
 Estimated Fair Value
(In millions)Carrying
Amount
 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total
Assets                 
Mortgage loans$591
 $
 $
 $594
 $594
$839
 $
 $
 $844
 $844
Note receivable46
 
 
 46
 46
Liabilities                  
Short term debt$150
 $
 $150
 $
 $150
Long term debt$2,710
 $
 $2,952
 $
 $2,952
2,708
 
 2,896
 
 2,896
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.
The carrying amounts reported on the Condensed 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.

Note E.E. Claim and Claim Adjustment Expense Reserves
The Company's property and casualty insurance claim and claim adjustment expense reserves represent the estimated amounts necessary to resolve all outstanding claims, including incurred but not reported (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 as claim reserving trends and settlement practices, loss payments, pending levels of unpaid claims and product mix, as well as court decisions, 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 all 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 $34 million and $36 million for the three months ended March 31, 20172018 and 2016. Catastrophe2017. Net catastrophe losses in the first quarter of 2018 and 2017 related primarily to U.S. weather-related events.

Liability for Unpaid Claim and Claim Adjustment Expenses Rollforward
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 Non-Core segment.
For the three months ended March 31      
(In millions)2017 20162018 2017
Reserves, beginning of year:      
Gross$22,343
 $22,663
$22,004
 $22,343
Ceded4,094
 4,087
3,934
 4,094
Net reserves, beginning of year18,249
 18,576
18,070
 18,249
Net incurred claim and claim adjustment expenses:      
Provision for insured events of current year1,207
 1,224
1,246
 1,207
Decrease in provision for insured events of prior years(82) (45)(34) (82)
Amortization of discount48
 48
47
 48
Total net incurred (1)
1,173
 1,227
1,259
 1,173
Net payments attributable to:      
Current year events(68) (76)(91) (68)
Prior year events(1,184) (1,147)(1,219) (1,184)
Total net payments(1,252) (1,223)(1,310) (1,252)
Foreign currency translation adjustment and other14
 39
(9) 14
Net reserves, end of period18,184
 18,619
18,010
 18,184
Ceded reserves, end of period4,076
 4,399
4,057
 4,076
Gross reserves, end of period$22,260
 $23,018
$22,067
 $22,260
(1)Total net incurred above does not agree to Insurance claims and policyholders' benefits as reflected on the Condensed 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.

Net Prior Year Development
Changes in estimates of claim and allocated 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 Non-Core segments.
Three months ended March 31, 2017         
(In millions)

Specialty
  Commercial International 
Corporate
& Other
Non-Core
 Total
Pretax (favorable) unfavorable net prior year claim and allocated claim adjustment expense reserve development$(31) $(24) $(2) $
 $(57)
Pretax (favorable) unfavorable premium development(5) 37
 (7) 
 25
Total pretax (favorable) unfavorable net prior year development$(36) $13
 $(9) $
 $(32)
For the three months ended March 31   
(In millions)2018 2017
Pretax (favorable) unfavorable development:   
Specialty$(30) $(12)
Commercial(9) (43)
International
 (2)
Corporate & Other
 
Total pretax (favorable) unfavorable development$(39) $(57)
Three months ended March 31, 2016         
(In millions)

Specialty
  Commercial International 
Corporate
& Other
Non-Core
 Total
Pretax (favorable) unfavorable net prior year claim and allocated claim adjustment expense reserve development$(34) $(14) $(4) $
 $(52)
Pretax (favorable) unfavorable premium development(11) (2) (1) 
 (14)
Total pretax (favorable) unfavorable net prior year development$(45) $(16) $(5) $
 $(66)
Premium development can occur in the property and casualty business when there is a change in exposure on auditable policies or when premium accruals differ from processed premium.  Audits on policies usually occur in a period after the expiration date of the policy. See further information on the premium development in the Commercial segment for the three months ended March 31, 2017 within Note F.

Specialty
The following table presents further detail of the net prior year claim and allocated claim adjustment expense reserve development (development) recorded for the Specialty segment.
Three months ended March 31      
(In millions)2017 20162018 2017
Pretax (favorable) unfavorable development:      
Medical Professional Liability$1
 $(7)$20
 $20
Other Professional Liability and Management Liability(32) (9)(34) (32)
Surety
 
(15) 
Warranty
 2

 
Other
 (20)(1) 
Total pretax (favorable) unfavorable development$(31) $(34)$(30) $(12)
2018
Unfavorable development for medical professional liability was primarily due to higher than expected severity in accident years 2014 and 2017 in our hospitals business.
Favorable development in other professional liability and management liability was primarily due to lower than expected claim frequency in accident years 2013 through 2015 related to financial institutions.
Favorable development for surety was due to lower than expected loss emergence for accident years 2015 and prior.
2017
Favorable development in other professional liability and management liability was primarily due to favorable settlements on closed claims and lower than expected frequency of large losses related to professional liability in accident years 2011 through 2016.
2016
FavorableUnfavorable development forin medical professional liability was primarily due to lower than expected severity in accident years 2011 and prior. This was partially offset by unfavorable development in accident years 2012 and 2013 related tocontinued higher than expected large loss emergence and higher than expected severity in accident years 2014 and 2015.
Favorable development in other professional liability and management liability was primarily related to favorable settlements on claims in accident years 2011 through 2013. This was partially offset by unfavorable development related to a specific financial institutions claim in accident year 2014 and continued deterioration on claims in accident year 2009 related to the credit crisis.
Favorable development for other coverages was primarily due to better than expected claim frequency in property coverages provided to Specialty customers in accident year 2015.

aging services.

Commercial
The following table presents further detail of the development recorded for the Commercial segment.
Three months ended March 31      
(In millions)2017 20162018 2017
Pretax (favorable) unfavorable development:      
Commercial Auto$(26) $(15)$(1) $(26)
General Liability
 (15)(8) (18)
Workers' Compensation
 4
(6) 
Property and Other2
 12
6
 1
Total pretax (favorable) unfavorable development$(24) $(14)$(9) $(43)
2018
Favorable development for general liability was primarily due to lower than expected frequency and severity in accident years 2015 and prior for our middle market construction business.
2017
Favorable development for commercial auto was primarily due to lower than expected severity in accident years 2013 through 2015.
2016
Favorable development for commercial auto was primarily due to favorable settlements on claims in accident years 2011 through 2014.2015.
Favorable development for general liability was primarily due to favorable settlements on claims in accident years 2013 and 2014.
Unfavorable development for property and other was primarily due to higherlower than expected severity from a 2015 catastrophe event.in life sciences.
International
The following table presents further detail of the development recorded for the International segment.
Three months ended March 31      
(In millions)2017 20162018 2017
Pretax (favorable) unfavorable development:      
Medical Professional Liability$
 $
$1
 $
Other Professional Liability(1) (1)1
 (1)
Liability
 

 
Property & Marine1
 (4)(2) 1
Other(2) 1

 (2)
Total pretax (favorable) unfavorable development$(2) $(4)$
 $(2)

Asbestos and Environmental Pollution (A&EP) Reserves
In 2010, Continental Casualty Company (CCC) together with several of the Company’s other 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). 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.
Subsequent to the effective date of the LPT, the Company recognized adverse prior year development on its A&EP reserves which resulted in additional amounts ceded under the LPT. As a result, the cumulative amounts ceded under the LPT 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 the amounts ceded under the LPT, the proportion of actual paid recoveries to total ceded losses is impactedaffected 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 Condensed Consolidated Statement of Operations.
The following table presents the impact of the Loss Portfolio Transfer on the Condensed Consolidated Statements of Operations.
Three months ended March 31      
(In millions)2017 20162018 2017
Additional amounts ceded under LPT:   
Net A&EP adverse development before consideration of LPT$60
 $200
$113
 $60
Provision for uncollectible third-party reinsurance on A&EP(16) 
Total additional amounts ceded under LPT97
 60
Retroactive reinsurance benefit recognized(40) (73)(57) (40)
Pretax impact of A&EP reserve development and the LPT$20
 $127
Pretax impact of deferred retroactive reinsurance$40
 $20
Based upon the Company's annual A&EP reserve review, net unfavorable prior year development of $60$113 million and $200$60 million was recognized before consideration of cessions to the LPT for the three months ended March 31, 20172018 and 2016.2017. Additionally, in 2018, the Company released a portion of its provision for uncollectible third party reinsurance. The 2018 unfavorable development was driven by higher than anticipated defense costs on direct asbestos environmental accounts and paid losses on assumed reinsurance exposures. 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. While thisthe unfavorable development was ceded to NICO under the LPT, the Company’s Net income in boththe periods was negatively affected due to the application of retroactive reinsurance accounting.
As of March 31, 20172018 and December 31, 2016,2017, the cumulative amounts ceded under the LPT were $2.9$3.0 billion and $2.8$2.9 billion. The unrecognized deferred retroactive reinsurance benefit was $354$366 million and $334$326 million as of March 31, 20172018 and December 31, 2016.2017.
NICO established a collateral trust account as security for its obligations to the Company. The fair value of the collateral trust account was $2.7$2.9 billion and $2.8$3.1 billion as of March 31, 20172018 and December 31, 2016.2017. 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 Company’s A&EP claims.

Note F. Legal Proceedings, Contingencies and Guarantees
CNA 401(k) Plus Plan Litigation
In September 2016, a class action lawsuit was filed against CCC, Continental Assurance Company (CAC) (a former subsidiary of CCC), CNAF, the Investment Committee of the CNA 401(k) Plus Plan (Plan), The Northern Trust Company and John Does 1-10 (collectively Defendants) overrelated to the CNA 401(k) Plus Plan. The complaint alleges that Defendants breached fiduciary duties to the CNA 401(k) Plus Plan and caused prohibited transactions in violation of the Employee Retirement Income Security Act of 1974 when the CNA 401(k) Plus Plan's Fixed Income Fund’s annuity contract with CAC was canceled. The plaintiff alleges he and a proposed class of the CNA 401(k) Plus Plan participants who had invested in the Fixed Income Fund suffered lower returns in their CNA 401(k) Plus Plan investments as a consequence of these alleged violations and seeks relief on behalf of the putative class. This litigation is in its preliminary stages, and as of yet no class has been certified. CCCThe Plan trustees have provided notice to their fiduciary coverage insurance carriers.
The plaintiff, Defendants and the other defendants are contestingPlan's fiduciary insurance carriers have agreed on terms to settle this matter. Upon execution of final settlement agreements, plaintiff and Defendants will propose a class settlement for court approval. Based on the caseexecuted term sheet, management has recorded its best estimate of the Company's probable loss and management currently is unable to predictdoes not believe that the final outcome or theultimate resolution of this matter will have a material impact on the Company’s financial condition, results of operations or cash flows. As of March 31, 2017, the likelihood of loss is reasonably possible, but the amount of loss, if any, cannot be estimated at this stage of the litigation.financial position.
Small Business Premium Rate Adjustment
TheIn 2016 and 2017, the Company identified rating errors related to its multi-peril package product and workers' compensation policies within its Small Business unit in the fourth quarter of 2016 and recorded a charge which reduced Earned premium by $16 million in anticipation ofdetermined that it would voluntarily issuingissue premium refunds related toalong with interest on affected policiespolicies. After the rating errors were identified, written and earned premium have been reported net of any impact from December 1, 2015.  The Company notified state regulators and provided them with details regarding these anticipated voluntarythe premium refunds and other corrective actions related to the multi-peril package product.  At that time, the Company also alerted regulators that it was reviewing other business lines to determine whether similar issues exist.
rate adjustments. In the first quarter of 2017, the Company concluded its review and determined that there were also rating errors related to Small Business workers' compensation policies. Accordingly, the Company recorded a charge which reduced Earned premium by $42 million in anticipation of voluntarily issuing premium refunds related to affected policies written from March 1, 2014. The Company is currently in dialogue with state regulators regarding this matter.
The estimated refund liability for the multi-peril product and workers' compensations policies as of March 31, 2017 was $36$38 million and $50 million, respectively. In the first quarter of 2017, the Company also recorded aincreased Interest expense by $5 million liability for interest due to policyholders on the aggregate refund amounts. Any fines or penalties related to the foregoing are reasonably possible, but are not expected to be material to the Company's Condensed Consolidated Financial Statements.premium rate adjustments.
The amountpolicyholder refunds for the multi-peril package product were issued in the third quarter of the refund and corresponding liability will continue to increase until required changes to the automated rating processes are fully implemented.2017. The changespolicyholder refunds for workers’ compensation policies are expected to be implemented byrefunded in the endsecond half of May2018 and, as such, an additional $1 million of Interest expense was recorded in the first quarter of 2018. The estimated refund liability, including interest, for the multi-peril product and by the end of September for workers' compensation policies. Accordingly, subsequent to the periods discussed in the preceding paragraphs, written and earned premium for the subject product and policy lines are reported netpolicies as of any impact from the premium rate adjustments.March 31, 2018 was $60 million.
Other Litigation
The Company is a party to other routine litigation incidental to its business, which, based on the facts and circumstances currently known, is not material to the Condensed Consolidated Financial Statements.

Company's results of operations or financial position.
Guarantees
As of March 31, 20172018 and December 31, 2016,2017, the Company had recorded liabilities of approximately $5 million related to guarantee and indemnification agreements. Managementagreements and management believes that it is not likely that any future indemnity claims will be significantly greater than the amounts recorded.
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 representations 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 March 31, 2017,2018, the aggregate amount related to quantifiable guarantees was $434$375 million and the aggregate amount related to quantifiable indemnification agreements was $254$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 March 31, 2017,2018 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.
The Company also provided guarantees, if the primary obligor fails to perform, to holders of structured settlement annuities provided by a previously owned subsidiary. As of March 31, 2017,2018, the potential amount of future payments the Company could be required to pay under these guarantees was approximately $1.8 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.

Note G.G. Benefit Plans
The components of net periodic pension cost (benefit) are presented in the following table.
Three months ended March 31   Pension Plans
(In millions)2017 20162018 2017
Pension cost (benefit)   
Net periodic pension cost (benefit)   
Service cost$
 $
Non-service cost:   
Interest cost on projected benefit obligation$26
 $28
23
 26
Expected return on plan assets(39) (40)(40) (39)
Amortization of net actuarial loss9
 9
9
 9
Settlement loss2
 
4
 2
Net periodic pension cost (benefit)$(2) $(3)
Total non-service cost(4) (2)
Total net periodic pension cost (benefit)$(4) $(2)
For the three months ended March 31, 2018, the Company recognized $1 million of non-service cost in Insurance claims and policyholders' benefits and $3 million of non-service cost in Other operating expenses. For the three months ended March 31, 2017, the Company recognized $1 million of non-service costs in Insurance claims and policyholders' benefits and $1 million of non-service costs in Other operating expenses.


Note H. Accumulated Other Comprehensive Income (Loss) by Component
The tables below display the changes in Accumulated other comprehensive income (loss) by component.
(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 January 1, 2017$30
 $642
 $(647) $(198) $(173)
Other comprehensive income (loss) before reclassifications
 85
 
 11
 96
Amounts reclassified from accumulated other comprehensive income (loss) net of tax (expense) benefit of $(2), $(9), $4, $- and $(7)4
 18
 (7) 
 15
Other comprehensive income (loss) net of tax (expense) benefit of $1, $(38), $(4), $- and $(41)(4) 67
 7
 11
 81
Balance as of March 31, 2017$26
 $709
 $(640) $(187) $(92)
(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 January 1, 2018, as previously reported$25
 $750
 $(645) $(98) $32
Cumulative effect adjustment from accounting change for adoption of ASU 2018-02(1)
5
 137
 (130) 
 12
Cumulative effect adjustment from accounting change for adoption of ASU 2016-01(1) net of tax (expense) benefit of $-, $8, $-, $- and $8

 (28) 
 
 (28)
Balance as of January 1, 2018, as adjusted30
 859
 (775) (98) 16
Other comprehensive income (loss) before reclassifications(10) (414) 
 12
 (412)
Amounts reclassified from accumulated other comprehensive income (loss) net of tax (expense) benefit of $-, $(4), $3, $- and $(1)(1) 15
 (10) 
 4
Other comprehensive income (loss) net of tax (expense) benefit of $2, $109, $(3), $- and $108(9) (429)
10
 12
 (416)
Balance as of March 31, 2018$21
 $430
 $(765) $(86) $(400)
(1)See Note A to the Condensed Consolidated Financial Statements for additional information.
(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 January 1, 2016$27
 $390
 $(648) $(84) $(315)
Other comprehensive income (loss) before reclassifications3
 223
 
 14
 240
Amounts reclassified from accumulated other comprehensive income (loss) net of tax (expense) benefit of $1, $7, $3, $- and $11(2) (11) (6) 
 (19)
Other comprehensive income (loss) net of tax (expense) benefit of $(3), $(116), $(3), $- and $(122)5
 234
 6
 14
 259
Balance as of March 31, 2016$32
 $624
 $(642) $(70) $(56)
(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 January 1, 2017$30
 $642
 $(647) $(198) $(173)
Other comprehensive income (loss) before reclassifications
 85
 
 11
 96
Amounts reclassified from accumulated other comprehensive income (loss) net of tax (expense) benefit of $(2), $(9), $4, $- and $(7)4
 18
 (7) 
 15
Other comprehensive income (loss) net of tax (expense) benefit of $1, $(38), $(4), $- and $(41)(4) 67
 7
 11
 81
Balance as of March 31, 2017$26
 $709
 $(640) $(187) $(92)
Amounts reclassified from Accumulated other comprehensive income (loss) shown above are reported in Net income (loss) as follows:
Component of AOCI Condensed Consolidated Statements of Operations Line Item Affected by Reclassifications
Net unrealized gains (losses) on investments with OTTI losses Net realized investment gains (losses)
Net unrealized gains (losses) on other investments Net realized investment gains (losses)
Pension and postretirement benefits Other operating expenses and Insurance claims and policyholders' benefits

Note I.I. Business Segments
The Company's core property and casualty commercial insurance operations are managed and reported in three business segments: Specialty, Commercial and International. These three segments are collectively referred to as Property & Casualty Operations. The Company's non-core operations outside of Property & Casualty Operations are managed and reported in two segments: Life & Group Non-Core and Corporate & Other Non-Core.Other.
Effective January 1, 2018, management changed the segment presentation of the life sciences business and technology and media related errors and omissions business within the Specialty and Commercial business segments. The life sciences business moved from the Specialty business segment to the Commercial business segment and the technology and media related errors and omissions business moved from the Commercial business segment to the Specialty business segment. The new management responsibility for these businesses better aligns with line of business underwriting expertise and the manner in which the products are sold. 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 within CNAF's Annual Report on Form 10-K for the year ended December 31, 2016.2017. 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 and Goodwill are readily identifiable for all 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 Realized investment gains or losses are allocated primarily based on each segment's net carried insurance reserves, as adjusted. All significant intersegment income and expense has been eliminated. Income taxes have been allocated on the basis of the taxable income of the segments.
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. Net operating
Core income (loss), which is derived from certain income statement amounts, is used by management to monitor performance of the Company's insurance operations. 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. Based on such analyses, the Company may recognize an OTTI loss on an investment security in accordance with its policy, or sell a security, which may produce realized gains and losses.
Net operatingCore 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, and iii) any cumulative effects of changes in accounting guidance.guidance and iv) deferred tax asset and liability remeasurement as a result of an enacted U.S. Federal tax rate change. The calculation of net operatingcore income (loss) excludes net realized investment gains (losses)or losses because net realized investment gains (losses) are largely discretionary, except for someor losses related to OTTI, and are generally driven by economic factors that are not necessarily consistent with key drivers of underwriting performance, and are therefore not considered an indication of trends in insurance operations.










The Company's results of operations and selected balance sheet items by segment are presented in the following tables.
Three months ended March 31, 2017

Specialty
 

Commercial
 International 
Life &
Group
Non-Core
 
Corporate
& Other
Non-Core
    
Three months ended March 31, 2018

Specialty
 

Commercial
 International 
Life &
Group
 
Corporate
& Other
    
(In millions)

Specialty
 

Commercial
 International 
Life &
Group
Non-Core
 
Corporate
& Other
Non-Core
 Eliminations Total Eliminations Total
Operating revenues  
  
             
Net earned premiums$664
 $651
 $197
 $133
 $
 $
 $1,645
$672
 $743
 $236
 $134
 $
 $
 $1,785
Net investment income153
 178
 12
 197
 5
 
 545
122
 149
 14
 200
 5
 
 490
Non-insurance warranty revenue238
 
 
 
 
 
 238
Other revenues94
 9
 
 1
 
 
 104
1
 8
 
 1
 1
 (1) 10
Total operating revenues911
 838
 209
 331
 5
 
 2,294
1,033
 900
 250
 335
 6
 (1) 2,523
Claims, Benefits and Expenses 
  
    
  
  
  
Claims, benefits and expenses 
  
    
  
  
  
Net incurred claims and benefits386
 437
 115
 330
 21
 
 1,289
379
 468
 142
 303
 41
 
 1,333
Policyholders’ dividends1
 3
 
 
 
 
 4
1
 5
 
 
 
 
 6
Amortization of deferred acquisition costs143
 116
 46
 
 
 
 305
145
 121
 30
 
 
 
 296
Non-insurance warranty expense216
 
 
 
 
 
 216
Other insurance related expenses69
 126
 27
 32
 
 
 254
64
 127
 56
 30
 
 
 277
Other expenses81
 14
 (6) 2
 44
 
 135
11
 11
 (4) 2
 42
 (1) 61
Total claims, benefits and expenses680
 696
 182
 364
 65
 
 1,987
816
 732
 224
 335
 83
 (1) 2,189
Operating income (loss) before income tax231
 142
 27
 (33) (60) 
 307
Income tax (expense) benefit on operating income (loss)(77) (48) (7) 37
 23
 
 (72)
Net operating income (loss) 154
 94
 20
 4
 (37) 
 235
Core income (loss) before income tax217
 168
 26
 
 (77) 
 334
Income tax (expense) benefit on core income (loss)(46) (35) (3) 14
 17
 
 (53)
Core income (loss) $171
 $133
 $23
 $14
 $(60) $
 281
Net realized investment gains (losses)7
 11
 6
 10
 2
 
 36
            12
Income tax (expense) benefit on net realized investment gains (losses)(3) (3) (1) (4) 
 
 (11)            (2)
Net realized investment gains (losses), after tax4
 8
 5
 6
 2
 
 25
            10
Net income (loss)$158
 $102
 $25
 $10
 $(35) $
 $260
Net income            $291
March 31, 2017             
March 31, 2018             
(In millions)                          
Reinsurance receivables$817
 $616
 $133
 $448
 $2,419
 $
 $4,433
$737
 $690
 $244
 $436
 $2,330
 $
 $4,437
Insurance receivables874
 1,048
 254
 12
 3
 
 2,191
947
 1,140
 315
 11
 1
 
 2,414
Deferred acquisition costs314
 225
 87
 
 
 
 626
318
 241
 106
 
 
 
 665
Goodwill117
 
 29
 
 
 
 146
117
 
 32
 
 
 
 149
Insurance reserves             
             
Claim and claim adjustment expenses6,224
 8,760
 1,343
 3,373
 2,560
 
 22,260
5,696
 8,718
 1,718
 3,501
 2,434
 
 22,067
Unearned premiums1,941
 1,375
 450
 147
 
 (1) 3,912
2,063
 1,490
 559
 145
 
 (1) 4,256
Future policy benefits
 
 
 10,491
 
 
 10,491

 
 
 10,783
 
 
 10,783

Three months ended March 31, 2016

Specialty
 

Commercial
 International 
Life &
Group
Non-Core
 
Corporate
& Other
Non-Core
    
Three months ended March 31, 2017

Specialty
 

Commercial
 International 
Life &
Group
 
Corporate
& Other
    
(In millions)

Specialty
 

Commercial
 International 
Life &
Group
Non-Core
 
Corporate
& Other
Non-Core
 Eliminations Total Eliminations Total
Operating revenues  
  
             
Net earned premiums$682
 $688
 $198
 $131
 $
 $
 $1,699
$654
 $661
 $197
 $133
 $
 $
 $1,645
Net investment income107
 126
 12
 187
 3
 
 435
148
 183
 12
 197
 5
 
 545
Non-insurance warranty revenue93
 
 
 
 
 
 93
Other revenues87
 6
 1
 
 3
 
 97
1
 9
 
 1
 
 
 11
Total operating revenues876
 820
 211
 318
 6
 
 2,231
896
 853
 209
 331
 5
 
 2,294
Claims, Benefits and Expenses 
      
  
  
  
Claims, benefits and expenses 
      
  
  
  
Net incurred claims and benefits390
 442
 121
 323
 128
 
 1,404
400
 423
 115
 330
 21
 
 1,289
Policyholders’ dividends1
 3
 
 
 
 
 4
1
 3
 
 
 
 
 4
Amortization of deferred acquisition costs144
 116
 47
 
 
 
 307
142
 117
 46
 
 
 
 305
Non-insurance warranty expense70
 
 
 
 
 
 70
Other insurance related expenses75
 141
 28
 33
 
 
 277
67
 128
 27
 32
 
 
 254
Other expenses75
 5
 9
 3
 54
 
 146
10
 15
 (6) 2
 44
 
 65
Total claims, benefits and expenses685
 707
 205
 359
 182
 
 2,138
690
 686
 182
 364
 65
 
 1,987
Operating income (loss) before income tax191
 113
 6
 (41) (176) 
 93
Income tax (expense) benefit on operating income (loss)(64) (39) 
 39
 62
 
 (2)
Net operating income (loss)127
 74
 6
 (2) (114) 
 91
Core income (loss) before income tax206
 167
 27
 (33) (60) 
 307
Income tax (expense) benefit on core income (loss)(69) (56) (7) 37
 23
 
 (72)
Core income (loss)$137
 $111
 $20
 $4
 $(37) $
 235
Net realized investment gains (losses)(11) (18) 4
 (3) (8) 
 (36)            36
Income tax (expense) benefit on net realized investment gains (losses)4
 6
 (1) 
 2
 
 11
            (11)
Net realized investment gains (losses), after tax(7) (12) 3
 (3) (6) 
 (25)            25
Net income (loss)$120
 $62
 $9
 $(5) $(120) $
 $66
Net income            $260
March 31, 2016             
December 31, 2017             
(In millions)                          
Reinsurance receivables$765
 $623
 $139
 $496
 $2,707
 $
 $4,730
$671
 $654
 $212
 $438
 $2,315
 $
 $4,290
Insurance receivables884
 1,025
 276
 14
 2
 
 2,201
969
 1,103
 254
 8
 2
 
 2,336
Deferred acquisition costs309
 225
 88
 
 
 
 622
318
 223
 93
 
 
 
 634
Goodwill117
 
 33
 
 
 
 150
117
 
 31
 
 
 
 148
Insurance reserves             
             
Claim and claim adjustment expenses6,325
 9,095
 1,395
 3,311
 2,892
 
 23,018
5,669
 8,764
 1,636
 3,499
 2,436
 
 22,004
Unearned premiums1,861
 1,347
 464
 136
 
 (1) 3,807
2,020
 1,409
 472
 128
 
 
 4,029
Future policy benefits
 
 
 10,500
 
 
 10,500

 
 
 11,179
 
 
 11,179


The following table presents operating revenue by line of business for each reportable segment. Revenues are comprised of operating revenues and net realized investment gains and losses.
Three months ended March 31      
(In millions)2017 20162018 2017
Specialty      
Management & Professional Liability$661
 $618
$624
 $638
Surety123
 127
129
 124
Warranty & Alternative Risks(1)134
 120
280
 134
Specialty revenues918
 865
1,033
 896
Commercial 
  
 
  
Middle Market458
 401
504
 468
Small Business97
 143
119
 96
Other Commercial Insurance294
 258
277
 289
Commercial revenues849
 802
900
 853
International

 



 

Canada51
 50
58
 51
CNA Europe73
 78
88
 72
Hardy91
 87
104
 86
International revenues215
 215
250
 209
Life & Group Non-Core revenues341
 315
Corporate & Other Non-Core revenues7
 (2)
Life & Group revenues335
 331
Corporate & Other revenues6
 5
Eliminations
 
(1) 
Total operating revenues2,523
 2,294
Net realized investment gains (losses)12
 36
Total revenues$2,330
 $2,195
$2,535
 $2,330
(1)
As of January 1, 2018, the Company adopted ASU 2014-09 Revenue Recognition (Topic 606): Revenue from Contracts with Customers. See Note A to the Condensed Consolidated Financial Statements for additional information.


Note J. 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
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 in which the Company acts as the principal in the transaction, Non-insurance warranty revenues are reported on a gross basis, with amounts billed to 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 automobile protection waivers.
The Company recognizes Non-insurance warranty revenues over the service period in proportion to the actuarially determined expected claims emergence pattern. Customers pay in full at the inception of the warranty contract. A liability for deferred revenue is recorded when cash payments are received or due in advance of the Company's performance. The deferred revenue balance includes amounts which are refundable on a pro rata basis upon cancellation.
The Company had deferred non-insurance warranty revenue balances of $2.9 billion and $3.0 billion reported in Other liabilities as of January 1, 2018 and March 31, 2018. The increase in the deferred revenue balance for the three months ended March 31, 2018 was primarily driven by cash payments received or due in advance of satisfying the Company's performance obligations, offset by cancellations and revenues recognized during the period. For the three months ended March 31, 2018, the Company recognized $222 million of revenues that were included in the deferred revenue balance at the beginning of the period. For the three months ended March 31, 2018, 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 $659 million of the deferred revenue in the remainder of 2018, $761 million in 2019, $593 million in 2020, and $1 billion thereafter.
Cost to Obtain and Fulfill Non-Insurance Warranty Contracts with Customers
Dealers, retailers and agents earn commission for assisting the Company in obtaining non-insurance warranty contracts. Additionally, the Company utilizes a third-party to perform warranty administrator services for its consumer good warranties. These costs are deferred and recorded as Other assets. These costs are amortized to Non-insurance warranty expense consistent with how the related revenue is recognized.
A premium deficiency arises to the extent that estimated future costs associated with these contracts exceed unrecognized revenue. The Company evaluates deferred costs for recoverability as part of our premium deficiency assessment. Anticipated investment income is considered in the determination of the recoverability of deferred costs. If necessary, adjustments to deferred costs and a premium deficiency reserve, if any, are recorded in current period results of operations. No premium deficiency was recognized in the three months ended March 31, 2018.
As of March 31, 2018, capitalized commission costs were $2.2 billion and capitalized administrator service costs were $17 million. For the three months ended March 31, 2018, the amount of amortization of capitalized costs was $157 million and there was no impairment loss related to the costs capitalized.

Item 2. Management's Discussion and Analysis (MD&A) of Financial Condition and Results of Operations
OVERVIEW
The following discussion highlights significant factors affecting the Company. References to “we,” “our,” “us” or like terms refer to the business of CNA. Based on 20152016 statutory net written premiums, we are the eighth largest commercial insurance writer and the 14th largest property and casualty insurance organizationinsurer in the United States of America.
The following discussion should be read in conjunction with the Condensed Consolidated Financial Statements included under Part I, Item 1 of this Form 10-Q and Item 1A Risk Factors and Item 7 Management's Discussion and Analysis of Financial Condition and Results of Operations, which are included in our Annual Report on Form 10-K filed with the Securities and Exchange Commission for the year ended December 31, 2016.2017.
We utilize the net operatingcore income (loss) financial measure to monitor our operations. Net operatingCore 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, and iii) any cumulative effects of changes in accounting guidance.guidance and iv) deferred tax asset and liability remeasurement as a result of an enacted U.S. Federal tax rate change. The calculation of net operatingcore income (loss) excludes net realized investment gains or losses because net realized investment gains or losses are largely discretionary, except for some losses related to OTTI, and are generally driven by economic factors that are not necessarily consistent with key drivers of underwriting performance, and are therefore not considered an indication of trends in insurance operations. Management monitors net operatingcore income (loss) for each business segment to assess segment performance. Presentation of consolidated net operatingcore income (loss) is deemed to be a non-GAAP financial measure. See further discussion regarding how we manage our business in Note I to the Condensed Consolidated Financial Statements included under Part I, Item 1. For reconciliations of non-GAAP measures to the most comparable GAAP measures and other information, please refer herein and/or to CNA's most recent 10-K on file with the Securities and Exchange Commission.
In evaluating the results of our core Specialty, Commercial and International segments, we utilize the loss ratio, the expense ratio, the dividend ratio and the combined ratio. 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 expense ratio is the percentage of insurance underwriting and acquisition expenses, including the amortization of deferred acquisition costs,cost, 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. 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. 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.
Changes in estimates of claim and allocated 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 related acquisition expenses. Further information on our reserves is provided in Note E to the Condensed Consolidated Financial Statements included under Part I, Item 1.


CRITICAL ACCOUNTING ESTIMATES
The preparation of the Condensed Consolidated Financial Statements in conformity with 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 Condensed Consolidated Financial Statements and the amountsamount of revenues and expenses reported during the period. Actual results may differ from those estimates.
Our Condensed 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 Condensed 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 below are considered by us to be critical to an understanding of our Condensed Consolidated Financial Statements as their application places the most significant demands on our judgment:
Insurance Reserves
Reinsurance and Insurance Receivables
Valuation of Investments and Impairment of Securities
Long Term Care Policies
Pension and Postretirement Benefit Obligations
Income Taxes
Due to the inherent uncertainties involved with these types of judgments, actual results could differ significantly from estimates and may have a material adverse impact on our results of operations, equity, business, and insurer financial strength and corporate debt ratings. See the Critical Accounting Estimates section of our Management's Discussion and Analysis of Financial Condition and Results of Operations included under Item 7 of our Annual Report on Form 10-K for the year ended December 31, 20162017 for further information.


CONSOLIDATED OPERATIONS
The following table includes the consolidated results of our operations.operations including our financial measure, Core income (loss). For more detailed components of our business operations and the net operatingcore income (loss) financial measure, see the segment discussions within this MD&A. For further discussion of Net investment income and Net realized investment results, see the Investments section of this MD&A.
Three months ended March 31      
(In millions)2017 20162018 2017
Operating Revenues      
Net earned premiums$1,645
 $1,699
$1,785
 $1,645
Net investment income545
 435
490
 545
Non-insurance warranty revenue238
 93
Other revenues104
 97
10
 11
Total operating revenues2,294
 2,231
2,523
 2,294
Claims, Benefits and Expenses      
Net incurred claims and benefits1,289
 1,404
1,333
 1,289
Policyholders' dividends4
 4
6
 4
Amortization of deferred acquisition costs305
 307
296
 305
Other insurance related expenses254
 277
277
 254
Non-insurance warranty expense216
 70
Other expenses135
 146
61
 65
Total claims, benefits and expenses1,987
 2,138
2,189
 1,987
Operating income before income tax307
 93
Income tax expense on operating income(72) (2)
Net operating income235
 91
Net realized investment gains (losses)36
 (36)
Income tax (expense) benefit on net realized investment gains (losses)(11) 11
Net realized investment gains (losses), after tax25
 (25)
Core income before income tax334
 307
Income tax expense on core income(53) (72)
Core income281

235
Net realized investment gains12
 36
Income tax expense on net realized investment gains(2) (11)
Net realized investment gains, after tax10
 25
Net income$260
 $66
$291
 $260
Net operatingCore income increased $144$46 million for the three months ended March 31, 20172018 as compared with 2017. Excluding the same period in 2016. Net operatingeffect of the corporate tax rate change, core income increased $61 million for our core segments primarily due to higherProperty & Casualty Operations increased approximately $4 million. Improved underwriting results more than offset lower net investment income anddriven by lower underwriting expenses partially offset by unfavorable premium development. Net operating loss decreased $83 millionlimited partnership returns. Excluding the effect of the Federal corporate income tax rate change, core income for our non-core segments primarily due to lower adverse prior year reserve development recorded in the three months ended March 31, 2017 as compared to the same period in 2016 under the A&EP Loss Portfolio Transfer. CatastropheLife & Group segment improved $22 million while core loss for our Corporate & Other segment increased $12 million.
Net catastrophe losses were $24$34 million after tax, for the three months ended March 31, 20172018 and 2016.
2017. Favorable net prior year loss reserve development of $32$39 million and $66$57 million was recorded in the three months ended March 31, 20172018 and 20162017 related to our Specialty, Commercial, International and InternationalCorporate & Other segments. Further information on net prior year loss reserve development is in Note E to the Condensed Consolidated Financial Statements included under Part 1,I, Item 1.


SEGMENT RESULTS
The following discusses the results of operations for our reportingbusiness segments. Our core property and casualty commercial insurance operations are managed and reported in three business segments: Specialty, Commercial and International.International, which we refer to collectively as Property & Casualty Operations. Our non-core operations outside of Property & Casualty Operations are managed and reported in two segments: Life & Group Non-Core and Corporate & Other Non-Core.Other.



Specialty
The following table presentsdetails the results of operations.operations for Specialty.
Three months ended March 31      
(In millions, except ratios, rate and retention)2017 2016
(In millions, except ratios, rate, renewal premium change and retention)2018 2017
Net written premiums$679
 $684
$686
 $670
Net earned premiums664
 682
672
 654
Net investment income153
 107
122
 148
Net operating income154
 127
Net realized investment gains (losses), after tax4
 (7)
Net income158
 120
Core income171
 137
      
Other performance metrics:      
Loss and loss adjustment expense ratio58.2% 57.1%56.3% 61.2%
Expense ratio31.9
 32.1
31.0
 31.9
Dividend ratio0.1
 0.2
0.2
 0.1
Combined ratio90.2% 89.4%87.5% 93.2%
      
Rate1% 1%2% 1%
Renewal premium change3
 4
Retention88% 88%85
 88
New Business$57
 $65
New business$81
 $55
Net written premiums for Specialty decreased $5increased $16 million for the three months ended March 31, 20172018 as compared with the same period in 2016, driven by lower2017 due to higher new business.business and positive renewal premium change. The trendincrease in net earned premiums was consistent with the trend in net written premiums.
Net operatingCore income increased $27$34 million for the three months ended March 31, 20172018 as compared with the same period in 2016, primarily due to higher2017. Excluding the effect of the Federal corporate income tax rate change, core income increased approximately $6 million. Improved underwriting results more than offset lower net investment income.income driven by lower limited partnership returns.
The combined ratio increased 0.8improved 5.7 points for the three months ended March 31, 20172018 as compared with the same period in 2016.2017. The loss ratio increased 1.1improved 4.9 points driven by lowerprimarily due to 2.7 points of improvement in the current accident year loss ratio and higher favorable net prior year loss reserve development. CatastropheNet catastrophe losses were $4$3 million, or 0.5 points of the loss ratio, for the three months ended March 31, 2017,2018, as compared to $4 million, or 0.6 points of the loss ratio, for the three months ended March 31, 2016.2017. The expense ratio improved 0.2decreased 0.9 points for the three months ended March 31, 20172018 as compared with the same period in 2016.2017.
Favorable net prior year loss reserve development of $36$30 million and $45$12 million was recorded infor the three months ended March 31, 20172018 and 2016.2017. Further information on net prior year loss reserve development is in Note E to the Condensed Consolidated Financial Statements included under Part I, Item 1.
The following table presentssummarizes the gross and net carried reserves.reserves for Specialty.
(In millions)March 31, 2017 December 31, 2016March 31, 2018 December 31, 2017
Gross case reserves$1,842
 $1,871
$1,734
 $1,742
Gross IBNR reserves4,382
 4,278
3,962
 3,927
Total gross carried claim and claim adjustment expense reserves$6,224
 $6,149
$5,696
 $5,669
Net case reserves$1,681
 $1,681
$1,585
 $1,600
Net IBNR reserves3,731
 3,723
3,385
 3,407
Total net carried claim and claim adjustment expense reserves$5,412
 $5,404
$4,970
 $5,007

Commercial
The following table presentsdetails the results of operations.operations for Commercial.
Three months ended March 31      
(In millions, except ratios, rate and retention)2017 2016
(In millions, except ratios, rate, renewal premium change and retention)2018 2017
Net written premiums$715
 $748
$832
 $724
Net earned premiums651
 688
743
 661
Net investment income178
 126
149
 183
Net operating income94
 74
Net realized investment gains (losses), after tax8
 (12)
Net income102
 62
Core income133
 111
   
   
Other performance metrics:      
Loss and loss adjustment expense ratio67.0% 64.2 %63.0% 63.9%
Expense ratio37.4
 37.3
33.5
 37.3
Dividend ratio0.5
 0.4
0.6
 0.5
Combined ratio104.9% 101.9 %97.1% 101.7%
      
Rate0% 0 %1% 0%
Renewal premium change3
 4
Retention83% 84 %84
 85
New Business$139
 $137
New business$181
 $140
Net written premiums for Commercial decreased $33were $108 million higher for the three months ended March 31, 20172018 as compared with the same period in 2016, due to2017. The prior period included an unfavorable premium development driven by a premium rate adjustment withinin Small Business which affected both net written premiums and net earned premiums as more fully discussed in Note F to the Condensed Consolidated Financial Statements under Part 1, Item 1. This was partially offsetExcluding the Small Business premium rate adjustment, net written premiums increased $61 million driven by higher new business within Middle Markets.and positive renewal premium change. The increase in net earned premiums was consistent with the trend in net written premiums.
Net operatingCore income increased $20$22 million for the three months ended March 31, 20172018 as compared with the same period in 2016, due to higher net investment2017. Excluding the effect of the Federal corporate income lower underwriting expensestax rate change and higher favorable net prior year loss reserve development, partially offset by unfavorable premium development driven by the Small Business premium rate adjustment.
The combined ratio increased 3.0 points foradjustment in the three months ended March 31, 2017, as compared with the sameprior period, in 2016,core income decreased approximately $26 million due to the unfavorable premium development. improved underwriting results more than offset by lower net investment income driven by lower limited partnership returns.
Excluding the impact of the Small Business premium rate adjustment, on the ratios for both periods, the combined ratio decreased 3.6increased 0.9 points, driven by a 1.4 point decrease in the loss ratio primarily due to higher5.0 points of less favorable net prior year loss reserve development largely offset by a 2.4 point improvement in the current accident year loss ratio and a 2.31.8 point decrease in the expense ratio primarily due to lower employee costs.
Catastrophehigher net earned premiums. Net catastrophe losses were $27$29 million, or 4.03.9 points of the loss ratio, for the three months ended March 31, 2017,2018, as compared to $28$27 million, or 4.13.9 points of the loss ratio, for the three months ended March 31, 2016.2017.
Favorable net prior year loss reserve development of $24$9 million and unfavorable premium development of $37$43 million was recorded for the three months ended March 31, 2017 as compared with favorable net prior year loss reserve development of $14 million2018 and favorable premium development of $2 million for the three months ended March 31, 2016.2017. Further information on net prior year development is in Note E to the Condensed Consolidated Financial Statements included under Part I, Item 1.

The following table presents the gross and net carried reserves.
(In millions)March 31, 2017 December 31, 2016
Gross case reserves$4,613
 $4,661
Gross IBNR reserves4,147
 4,233
Total gross carried claim and claim adjustment expense reserves$8,760
 $8,894
Net case reserves$4,322
 $4,353
Net IBNR reserves3,862
 3,952
Total net carried claim and claim adjustment expense reserves$8,184
 $8,305

International
The following table presents the results of operations.
Three months ended March 31   
(In millions, except ratios, rate and retention)2017 2016
Net written premiums$238
 $236
Net earned premiums197
 198
Net investment income12
 12
Net operating income20
 6
Net realized investment gains, after tax5
 3
Net income25
 9
    
Other performance metrics:   
Loss and loss adjustment expense ratio58.3 % 61.2%
Expense ratio36.8
 37.8
Combined ratio95.1 % 99.0%
    
Rate0 % 0%
Retention76 % 81%
New Business$65
 $60
Net written premiums for International for the three months ended March 31, 2017 were consistent with 2016. Excluding the effect of foreign currency exchange rates and premium development, net written premiums increased 1.1% and net earned premiums were flat for the three months ended March 31, 2017 as compared with the same period in 2016.
Net operating income increased $14 million for the three months ended March 31, 2017 as compared with 2016, due to the favorable period over period effect of foreign currency exchange gains and losses and improved underwriting results.
The combined ratio improved 3.9 points for the three months ended March 31, 2017 as compared with 2016. The loss ratio improved 2.9 points, primarily due to an improved current accident year loss ratio driven by a lower level of large losses and higher favorable premium development. Catastrophe losses were $3 million, or 1.7 points of the loss ratio, for three months ended March 31, 2017 as compared to $4 million, or 2.1 points of the loss ratio, for three months ended March 31, 2016. The expense ratio improved 1.0 point for three months ended March 31, 2017, as compared with the same period in 2016, primarily due to foreign currency fluctuations.
Favorable net prior year development of $9 million and $5 million was recorded for the three months ended March 31, 2017 and 2016. Further information on net prior yearreserve development is in Note E to the Condensed Consolidated Financial Statements included under Part I, Item I.1.

The following table presentssummarizes the gross and net carried reserves.reserves for Commercial.
(In millions)March 31, 2017 December 31, 2016March 31, 2018 December 31, 2017
Gross case reserves$641
 $632
$4,327
 $4,427
Gross IBNR reserves702
 696
4,391
 4,337
Total gross carried claim and claim adjustment expense reserves$1,343
 $1,328
$8,718
 $8,764
Net case reserves$559
 $548
$4,008
 $4,103
Net IBNR reserves666
 653
4,058
 4,033
Total net carried claim and claim adjustment expense reserves$1,225
 $1,201
$8,066
 $8,136

Life & Group Non-CoreInternational
The following table presentsdetails the results of operations.operations for International.
Three months ended March 31   
(In millions)2017 2016
Net earned premiums$133
 $131
Net investment income197
 187
Net operating income (loss)4
 (2)
Net realized investment gains (losses), after tax6
 (3)
Net income (loss)10
 (5)
Three months ended March 31   
(In millions, except ratios, rate, renewal premium change and retention)2018 2017
Net written premiums$295
 $238
Net earned premiums236
 197
Net investment income14
 12
Core income23
 20
    
Other performance metrics:   
Loss and loss adjustment expense ratio60.4% 58.3%
Expense ratio36.2
 36.8
Combined ratio96.6% 95.1%
    
Rate2% 1%
Renewal premium change8
 1
Retention80
 78
New business$93
 $65
Net operating results improved $6written premiums for International increased $57 million for the three months ended March 31, 20172018 as compared with the same period in 2016. The improvement was2017 due to broad based growth across all of our platforms driven by higher new business, positive renewal premium change and higher retention. Excluding the effect of foreign currency exchange rates, net investmentwritten premiums increased $36 million or 14% for the three months ended March 31, 2018 as compared with the same period in 2017. The increase in net earned premiums wasconsistent with the trend in net written premiums.
Core income and favorable morbidity partially offset by unfavorable persistency in the long term care business.
Corporate & Other Non-Core
The following table presents the results of operations.
Three months ended March 31   
(In millions)2017 2016
Net investment income$5
 $3
Interest expense38
 42
Net operating loss(37) (114)
Net realized investment gains (losses), after tax2
 (6)
Net loss(35) (120)
Net operating loss was $37increased $3 million for the three months ended March 31, 2017, an improvement2018 as compared with 2017. Excluding the effect of $77the Federal corporate income tax rate change, core income was consistent with the prior period.
The combined ratio increased 1.5 points for the three months ended March 31, 2018 as compared with 2017. The loss ratio increased 2.1 points, primarily due to lower favorable net prior year loss reserve development. Net catastrophe losses were $2 million, or 0.7 points of the loss ratio, for the three months ended March 31, 2018, as compared to $3 million, or 1.7 points of the loss ratio, for the three months ended March 31, 2017. The expense ratio decreased 0.6 points for the three months ended March 31, 2018 as compared with the same period in 2016. This improvement2017 due to higher net earned premiums.
Favorable net prior year loss reserve development was nil and $2 million for the three months ended March 31, 2018 and 2017. Further information on net prior year loss reserve development is in Note E to the Condensed Consolidated Financial Statements included under Part I, Item 1.
The following table summarizes the gross and net carried reserves for International.
(In millions)March 31, 2018 December 31, 2017
Gross case reserves$841
 $744
Gross IBNR reserves877
 892
Total gross carried claim and claim adjustment expense reserves$1,718
 $1,636
Net case reserves$696
 $640
Net IBNR reserves782
 792
Total net carried claim and claim adjustment expense reserves$1,478
 $1,432

Life & Group
The following table details the results of operations for Life & Group.
Three months ended March 31   
(In millions)2018 2017
Net earned premiums$134
 $133
Net investment income200
 197
Core loss before income tax
 (33)
Income tax benefit on core loss14
 37
Core income14
 4
Core income increased $10 million for the three months ended March 31, 2018 as compared with the same period in 2017. Excluding the effect of the Federal corporate income tax rate change, core income increased approximately $22 million driven by favorable persistency, and further helped by premium rate increases. The favorable persistency was driven by lowera high proportion of policyholders choosing to reduce benefits in lieu of premium rate increases.
Corporate & Other
The following table details the results of operations for Corporate & Other.
Three months ended March 31   
(In millions)2018 2017
Net investment income$5
 $5
Interest expense34
 38
Core loss(60) (37)
Core loss increased $23 million for the three months ended March 31, 2018 as compared with the same period in 2017. Excluding the effect of the Federal corporate income tax rate change, core loss increased approximately $12 million due to higher adverse net prior year reserve development recorded in 20172018 for A&EP under the Loss Portfolio Transfer.LPT, as compared to the prior year period. This is further discussed in Note E to the Condensed Consolidated Financial Statements included under Part I, Item 1.
The following table presentssummarizes the gross and net carried reserves.reserves for Corporate & Other.
(In millions)March 31, 2017 December 31, 2016March 31, 2018 December 31, 2017
Gross case reserves$1,458
 $1,524
$1,210
 $1,371
Gross IBNR reserves1,102
 1,090
1,224
 1,065
Total gross carried claim and claim adjustment expense reserves$2,560
 $2,614
$2,434
 $2,436
Net case reserves$95
 $94
$93
 $94
Net IBNR reserves132
 136
110
 111
Total net carried claim and claim adjustment expense reserves$227
 $230
$203
 $205

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 and non-redeemable preferred stock.
Three months ended March 31   
(In millions)2017 2016
Fixed maturity securities:   
    Taxable$347
 $345
    Tax-Exempt108
 101
Total fixed maturity securities455
 446
Limited partnership investments90
 (14)
Other, net of investment expense
 3
Net investment income$545
 $435
Net investment income, after tax$389
 $315
    
Effective income yield for the fixed maturity securities portfolio, pretax4.8% 4.8%
Effective income yield for the fixed maturity securities portfolio, after tax3.4% 3.4%
Three months ended March 31   
(In millions)2018 2017
Fixed income securities:   
Taxable fixed income securities$350
 $348
Tax-exempt fixed income securities105
 108
Total fixed income securities455
 456
Limited partnership and common stock investments31
 90
Other, net of investment expense4
 (1)
Pretax net investment income$490
 $545
Fixed income securities, after tax$377
 $331
Net investment income, after tax405
 389
    
Effective income yield for the fixed income securities portfolio, pretax4.7% 4.8%
Effective income yield for the fixed income securities portfolio, after tax3.9% 3.4%
NetPretax net investment income after tax,decreased $55 million for the three months ended March 31, 2017 increased $74 million2018 as compared with the same period in 2016.2017. The increasedecrease was driven by limited partnership investments, which returned 3.8%1.2% in 20172018 as compared with (0.6)%3.8% in the prior year period. Income from fixed maturity securities,However, despite the decline in limited partnership income, net investment income, after tax, increased $16 million for the three months ended March 31, 2017 increased $7 million2018 as compared with the same period in 2016, primarily due to an increase in2017 given stable fixed income returns and the invested asset base.lower Federal corporate income tax rate.


Net Realized Investment Gains (Losses)
The components of Net realized investment results are presented in the following table.
Three months ended March 31   
(In millions)2017 2016
Fixed maturity securities:   
Corporate and other bonds$29
 $(15)
States, municipalities and political subdivisions6
 3
Asset-backed(4) (6)
U.S. Treasury and obligations of government-sponsored enterprises1
 1
Total fixed maturity securities32
 (17)
Equity securities
 (5)
Derivative securities1
 (7)
Short term investments and other3
 (7)
Net realized investment gains (losses)36
 (36)
Income tax (expense) benefit on net realized investment gains (losses)(11) 11
Net realized investment gains (losses), after tax$25
 $(25)
Three months ended March 31   
(In millions)2018 2017
Fixed maturity securities:   
Corporate bonds and other$19
 $30
States, municipalities and political subdivisions20
 6
Asset-backed(21) (4)
Total fixed maturity securities18
 32
Non-redeemable preferred stock(15) 
Short term and other9
 4
Net realized investment gains12
 36
Income tax expense on net realized investment gains(2) (11)
Net realized investment gains, after tax$10
 $25
NetPretax net realized investment results, after tax, improved $50gains decreased $24 million for the three months ended March 31, 20172018 as compared with the same period in 2016,2017. The decrease was driven by the favorable period over period effectdecline in fair value of non-redeemable preferred stock and lower net realized investment gains on sales of securities and lower OTTI losses recognized in earnings. securities.
Further information on our realized gains and losses, including our OTTI losses, is set forth in Note C to the Condensed Consolidated Financial Statements included under Part I, Item 1.

Portfolio Quality
The following table presents the estimated fair value and net unrealized gains (losses) of our fixed maturity securities by rating distribution.
March 31, 2017 December 31, 2016March 31, 2018 December 31, 2017

(In millions)
Estimated Fair Value Net Unrealized Gains (Losses) Estimated Fair Value Net Unrealized Gains (Losses)Estimated Fair Value Net Unrealized Gains (Losses) Estimated Fair Value Net Unrealized Gains (Losses)
U.S. Government, Government agencies and Government-sponsored enterprises$3,995
 $28
 $4,212
 $32
$4,491
 $(52) $4,514
 $21
AAA1,832
 117
 1,881
 110
3,265
 259
 1,954
 152
AA9,016
 761
 8,911
 750
7,096
 576
 8,982
 914
A9,705
 823
 9,866
 832
9,168
 702
 9,643
 952
BBB13,166
 815
 12,802
 664
13,413
 699
 13,554
 1,093
Non-investment grade3,266
 167
 3,233
 156
2,826
 84
 2,840
 140
Total$40,980
 $2,711
 $40,905
 $2,544
$40,259
 $2,268
 $41,487
 $3,272
As of March 31, 20172018 and December 31, 2016,2017, only 2% of our fixed maturity portfolio was rated internally.
The following table presents available-for-sale fixed maturity securities in a gross unrealized loss position by ratings distribution.
March 31, 2017March 31, 2018
(In millions)Estimated Fair Value Gross Unrealized LossesEstimated Fair Value Gross Unrealized Losses
U.S. Government, Government agencies and Government-sponsored enterprises$2,154
 $44
$2,997
 $82
AAA284
 8
451
 12
AA591
 18
754
 11
A833
 20
1,579
 33
BBB1,819
 37
3,379
 79
Non-investment grade737
 15
881
 29
Total$6,418
 $142
$10,041
 $246
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.
March 31, 2017March 31, 2018
(In millions)Estimated Fair Value Gross Unrealized LossesEstimated Fair Value Gross Unrealized Losses
Due in one year or less$90
 $2
$113
 $4
Due after one year through five years816
 10
1,779
 41
Due after five years through ten years4,083
 82
6,569
 164
Due after ten years1,429
 48
1,580
 37
Total$6,418
 $142
$10,041
 $246

Duration
A primary objective in the management of the investment portfolio is to optimize return relative to 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 and 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 Non-Core segment.
The effective durations of fixed maturity 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.
March 31, 2017 December 31, 2016March 31, 2018 December 31, 2017
(In millions)Estimated Fair Value 
Effective
Duration
(In years)
 Estimated Fair Value 
Effective
Duration
(In years)
Estimated Fair Value 
Effective
Duration
(In years)
 Estimated Fair Value 
Effective
Duration
(In years)
Investments supporting Life & Group Non-Core$15,957
 8.8
 $15,724
 8.7
Other interest sensitive investments26,218
 4.6
 26,669
 4.6
Investments supporting Life & Group$16,413
 8.3
 $16,797
 8.4
Other investments25,656
 4.5
 26,817
 4.4
Total$42,175
 6.2
 $42,393
 6.1
$42,069
 6.0
 $43,614
 5.9
The duration of the total portfolio is aligned with the cash flow characteristics of the underlying liabilities.
The investment portfolio is periodically analyzed for changes in duration and related price risk. 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 of our Annual Report on Form 10-K for the year ended December 31, 2016.2017.
Short Term Investments
The carrying value of the components of the Short term investments are presented in the following table.
   
(In millions)March 31, 2017 December 31, 2016March 31, 2018 December 31, 2017
Short term investments:      
Commercial paper$769
 $733
$946
 $905
U.S. Treasury securities175
 433
134
 355
Money market funds52
 44
23
 44
Other143
 197
127
 132
Total short term investments$1,139
 $1,407
$1,230
 $1,436

LIQUIDITY AND CAPITAL RESOURCES
Cash Flows
Our primary operating cash flow sources are premiums and investment income from our insurance subsidiaries. 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 the three months ended March 31, 2017,2018, net cash provided by operating activities was $282$218 million as compared with $334$282 million for the same period in 2016. Cash2017. The decrease in cash provided by operating activities reflectedwas driven by a lower level of distributions on limited partnerships and higher net claim and expense payments partially offset by the timing of income tax payments and lower salaries and related expenses.an increase in premiums collected.
Cash flows from investing activities include the purchase and disposition of available-for-sale financial instruments and may include the purchase and sale of businesses, land, buildings, equipment and other assets not generally held for resale.
Net cash provided by investing activities was $354$489 million for the three months ended March 31, 2017,2018, as compared with net cash used of $9$354 million for the same period in 2016.2017. The cash flow from investing activities is affected by various 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.
Cash flows from financing activities may include proceeds from the issuance of debt and equity securities, outflows for stockholder dividends or repayment of debt and outlays to reacquire equity securities.
For the three months ended March 31, 2017,2018, net cash used by financing activities was $609$781 million as compared with $469$609 million for the same period in 2016.2017. In the first quarter of 2016,2018, we issued $500 million of 4.50% senior notes due March 1, 2026 and redeemed the $350$150 million outstanding aggregate principal balance of our 6.50% 6.950% senior notes due AugustJanuary 15, 2016.2018.
Common Stock Dividends
A quarterly dividend of $0.25$0.30 per share and a special dividend of $2.00 per share onof our common stock were declared and paid in the first quarter of 2017.2018. On April 28, 2017,27, 2018, our Board of Directors declared a quarterly dividend of $0.25$0.30 per share, on our common stock, payable May 31, 201730, 2018 to stockholders of record on May 15, 2017.14, 2018. 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.

Liquidity
Later this year, management intends to pay down the $30 million of subordinated variable rate debt of Hardy due September 15, 2036. 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).FHLBC.
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 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 March 31, 20172018 CCC was in a positive earned surplus position. The maximum allowable dividend CCC could pay during 20172018 that would not be subject to the Department's prior approval is $1,075$1,073 million, less dividends paid during the preceding twelve months measured at that point in time. CCC paid dividends of $200$280 million during the nine months ended December 31, 20162017 and $675$670 million during the three months ended March 31, 2017.2018. As of March 31, 20172018 CCC is able to pay approximately $200$123 million of dividends that would not be subject to prior approval of the Department. 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.
We have an effective automatic shelf registration statement under which we may publicly issue debt, equity or hybrid securities from time to time.


ACCOUNTING STANDARDS UPDATE
For a discussion of Accounting Standards Updates adopted in the current period and that will be adopted in the future, see Note A to the Condensed Consolidated Financial Statements included under Part I, Item 1.
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,”“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 for 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; 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 our Annual Report on Form 10-K, 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 transaction in which, subject to certain limitations, we ceded our legacy A&EP liabilities will not fully perform their obligations to CNA, the uncertainty in estimating loss reserves for A&EP liabilities and the possible continued exposure of CNA to liabilities for A&EP claims that are not covered under the terms of the transaction;
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 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 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.

Regulatory Factors
regulatory initiatives and compliance with governmental regulations, judicial interpretations within the regulatory framework, including interpretation of policy provisions, decisions regarding coverage and theories of liability, legislative actions that increase claimant activity, 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.
Impact of Catastrophic Events and Related Developments
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, 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.
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 exit from the European Union (E.U.), commonly referred to as "Brexit"."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 maywill 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.
Our forward-looking statements speak only as of the date of the filing of this Quarterly Report on Form 10-Q 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, even if our expectations or any related events or circumstances change.


Item 3. Quantitative and Qualitative Disclosures About Market Risk
There were no material changes in our market risk components for the three months ended March 31, 2017.2018. See the Quantitative and Qualitative Disclosures About Market Risk included in Item 7A of our Annual Report on Form 10-K for the year ended December 31, 20162017 for further information. Additional information related to portfolio duration is discussed in the Investments section of our Management’s Discussion and Analysis of Financial Condition and Results of Operations included in Part I, Item 2.
Item 4. Controls and Procedures
The Company maintains a system of disclosure controls and procedures which are designed to ensure that information required to be disclosed by the Company in reports that it files or submits to the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), including this report, is recorded, processed, summarized and reported on a timely basis. These disclosure controls and procedures include controls and procedures designed to ensure that information required to be disclosed under the Exchange Act is accumulated and communicated to the Company's management on a timely basis to allow decisions regarding required disclosure.
As of March 31, 2017,2018, 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 Exchange Act Rules 13a-15(e) and 15d-15(e)). Based on this evaluation, the CEO and CFO have concluded that the Company's disclosure controls and procedures are effective as of March 31, 2017.2018.
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 March 31, 20172018 that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.


PART II. Other Information
Item 1. Legal Proceedings
Information on our legal proceedings is set forth in Note F to the Condensed Consolidated Financial Statements included under Part I, Item 1.
Item 6. Exhibits
See Exhibit Index.


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
   
Dated: May 1, 2017April 30, 2018By/s/ D. Craig Mense
  
D. Craig Mense
Executive Vice President and
Chief Financial Officer



EXHIBIT INDEX

Description of ExhibitExhibit Number
Form10.1
  
31.1
  
31.2
  
32.1
  
32.2
  
XBRL Instance Document101.INS
  
XBRL Taxonomy Extension Schema101.SCH
  
XBRL Taxonomy Extension Calculation Linkbase101.CAL
  
XBRL Taxonomy Extension Definition Linkbase101.DEF
  
XBRL Taxonomy Label Linkbase101.LAB
  
XBRL Taxonomy Extension Presentation Linkbase101.PRE


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