UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
FORM 10-Q
 
ýQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended March 31, 20172018
or
oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from            to
Commission File No. 001-7784
 
ctllogo1a03.jpg
CENTURYLINK, INC.
(Exact name of registrant as specified in its charter)
 
  
Louisiana
 (State or other jurisdiction of
incorporation or organization)
72-0651161
(I.R.S. Employer
Identification No.)
100 CenturyLink Drive,
Monroe, Louisiana
 (Address of principal executive offices)
71203
 (Zip Code)
(318) 388-9000
(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 ý    No o
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (Section 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 ý    No o
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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 ý
Accelerated filer o
Non-accelerated filer o
 (Do not check if a smaller reporting company)
Smaller reporting company o
   
Emerging growth company o
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. o
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes o    No ý
On April 27, 2017,May 4, 2018, there were 548,812,0631,078,846,346 shares of common stock outstanding.
 

TABLE OF CONTENTS


   
 
 
 
 
 
 
 
 
 
 
* All references to "Notes" in this quarterly report refer to these Notes to Consolidated Financial Statements.

PART I—FINANCIAL INFORMATION
Special Note Regarding Forward-Looking Statements
All statements other than statements of historical fact contained in this Quarterly Report on Form 10-Q are “forward-looking” statements, as defined by (and subject to the “safe harbor” protections under) the federal securities laws. When used herein, the words “anticipates,” “expects,” “believes,” “seeks,” “hopes,” “intends,” “plans,” “projects,” “will” and similar words and expressions are intended to identify forward-looking statements. Forward-looking statements are based on a number of judgments and assumptions as of the date such statements are made about future events, many of which are beyond our control. These forward-looking statements, and the assumptions on which they are based, (i) are not guarantees of future events, (ii) are inherently speculative and (iii) are subject to significant risks and uncertainties. Actual events and results may differ materially from those anticipated, estimated, projected or implied by us in those statements if one or more of these risks or uncertainties materialize, or if our underlying assumptions prove incorrect. All of our forward-looking statements are qualified in their entirety by reference to our discussion of certain important factors that could cause our actual results to differ materially from those anticipated, estimated, projected or implied by us in those forward-looking statements. Factors that could cause our results to differ materially from the expectations expressed in such forward-looking statements include but are not limited to the following:
the effects of competition from a wide variety of competitive providers, including decreased demand for our traditional wireline service offerings and increased pricing pressures;
the effects of new, emerging or competing technologies, including those that could make our products less desirable or obsolete;
the effects of ongoing changes in the regulation of the communications industry, including the outcome of regulatory or judicial proceedings relating to intercarrier compensation, interconnection obligations, universal service, broadband deployment, data protection and net neutrality;
our ability to timely realize the anticipated benefits of our recently-completed combination with Level 3, including our ability to attain anticipated cost savings, to use Level 3's net operating loss carryforwards in the amounts projected, to retain key personnel and to avoid unanticipated integration disruptions;
our ability to safeguard our network, and to avoid the adverse impact on our business from possible security breaches, service outages, system failures, equipment breakage, or similar events impacting our network or the availability and quality of our services;
our ability to effectively adjust to changes in the communications industry, and changes in the composition of our markets and product mix;
possible changes in the demand for our products and services, including our ability to effectively respond to increased demand for high-speed broadband service;
our ability to successfully maintain the quality and profitability of our existing product and service offerings, to provision them successfully to our customers and to introduce profitable new offerings on a timely and cost-effective basis;
our ability to generate cash flows sufficient to fund our financial commitments and objectives, including our capital expenditures, operating costs, debt repayments, periodic share repurchases, dividends, pension contributions and other benefits payments;
changes in our operating plans, corporate strategies, dividend payment plans or other capital allocation plans, whether based upon changes in our cash flows, cash requirements, financial performance, financial position, market conditions or otherwise;
our ability to effectively retain and hire key personnel and to successfully negotiate collective bargaining agreements on reasonable terms without work stoppages;
increases in the costs of our pension, health, post-employment or other benefits, including those caused by changes in markets, interest rates, mortality rates, demographics or regulations;
adverse changes in our access to credit markets on favorable terms, whether caused by changes in our financial position, lower debt credit ratings, unstable markets or otherwise;
our ability to meet the terms and conditions of our debt obligations;

our ability to maintain favorable relations with our key business partners, suppliers, vendors, landlords and financial institutions;
our ability to effectively manage our network buildout project and our other expansion opportunities;
our ability to collect our receivables from financially troubled customers;
any adverse developments in legal or regulatory proceedings involving us;
changes in tax, communications, pension, healthcare or other laws or regulations, in governmental support programs, or in general government funding levels;
the effects of changes in accounting policies or practices, including potential future impairment charges;
the effects of adverse weather, terrorism or other natural or man-made disasters;
the effects of more general factors such as changes in interest rates, in exchange rates, in operating costs, in general market, labor, economic or geo-political conditions, or in public policy; and
other risks identified in our "Risk Factors" disclosures included in our annual report on Form 10-K for the year ended December 31, 2017.
Additional factors or risks that we currently deem immaterial, that are not presently known to us or that arise in the future could also cause our actual results to differ materially from our expected results. Given these uncertainties, investors are cautioned not to unduly rely upon our forward-looking statements, which speak only as of the date made. We undertake no obligation to publicly update or revise any forward-looking statements for any reason, whether as a result of new information, future events or developments, changed circumstances, or otherwise. Furthermore, any information about our intentions contained in any of our forward-looking statements reflects our intentions as of the date of such forward-looking statement, and is based upon, among other things, existing regulatory, technological, industry, competitive, economic and market conditions, and our assumptions as of such date. We may change our intentions, strategies or plans (including our dividend or other capital allocation plans) at any time and without notice, based upon any changes in such factors, in our assumptions or otherwise.

Table of Contents

ITEM 1. FINANCIAL STATEMENTS
CENTURYLINK, INC.
CONSOLIDATED STATEMENTS OF OPERATIONS
(UNAUDITED)

Three Months Ended March 31,Three Months Ended March 31,
2017 20162018 2017
(Dollars in millions, except per share amounts
and shares in thousands)
(Dollars in millions, except per share amounts
and shares in thousands)
OPERATING REVENUES$4,209
 4,401
$5,945
 4,209
OPERATING EXPENSES      
Cost of services and products (exclusive of depreciation and amortization)1,888
 1,900
2,803
 1,888
Selling, general and administrative810
 837
1,109
 810
Depreciation and amortization880
 976
1,283
 880
Total operating expenses3,578
 3,713
5,195
 3,578
OPERATING INCOME631
 688
750
 631
OTHER (EXPENSE) INCOME      
Interest expense(318) (331)(535) (318)
Other (expense) income, net(6) 23
Other income (expense), net21
 (6)
Total other expense, net(324) (308)(514) (324)
INCOME BEFORE INCOME TAX EXPENSE307
 380
236
 307
Income tax expense144

144
121

144
NET INCOME$163
 236
$115
 163
BASIC AND DILUTED EARNINGS PER COMMON SHARE      
BASIC$0.30
 0.44
$0.11
 0.30
DILUTED$0.30
 0.44
$0.11
 0.30
DIVIDENDS DECLARED PER COMMON SHARE$0.54
 0.54
$0.54
 0.54
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING      
BASIC540,458
 538,799
1,065,796
 540,458
DILUTED541,522
 540,187
1,069,183
 541,522
See accompanying notes to consolidated financial statements.

CENTURYLINK, INC.
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(UNAUDITED)

Three Months Ended March 31,Three Months Ended March 31,
2017
20162018 2017
(Dollars in millions)(Dollars in millions)
NET INCOME$163
 236
$115
 163
OTHER COMPREHENSIVE INCOME:      
Items related to employee benefit plans:      
Change in net actuarial loss, net of $(20) and $(16) tax31
 26
Change in net actuarial loss, net of $(11) and $(20) tax33
 31
Change in net prior service costs, net of $(1) and $(1) tax2
 2
2
 2
Foreign currency translation adjustment and other, net of $— and $— tax(2) (1)
Foreign currency translation adjustment and other, net of $(14) and $— tax79
 (2)
Other comprehensive income31
 27
114
 31
COMPREHENSIVE INCOME$194
 263
$229
 194
See accompanying notes to consolidated financial statements.

CENTURYLINK, INC.
CONSOLIDATED BALANCE SHEETS
(UNAUDITED)
As of
March 31, 2017
 As of
December 31, 2016
As of
March 31, 2018 (Unaudited)
 As of
December 31, 2017
(Dollars in millions
and shares in thousands)
(Dollars in millions
and shares in thousands)
ASSETS      
CURRENT ASSETS      
Cash and cash equivalents$214
 222
$501
 551
Accounts receivable, less allowance of $180 and $1781,854
 2,017
Restricted cash - current5
 5
Accounts receivable, less allowance of $168 and $1642,432
 2,557
Assets held for sale2,343
 2,376
140
 140
Other557
 547
1,105
 941
Total current assets4,968
 5,162
4,183
 4,194
NET PROPERTY, PLANT AND EQUIPMENT   
Property, plant and equipment39,642
 39,194
Accumulated depreciation(22,626) (22,155)
Net property, plant and equipment17,016
 17,039
Property, plant and equipment, net of accumulated depreciation of $25,116 and $24,35226,826
 26,852
GOODWILL AND OTHER ASSETS      
Goodwill19,650
 19,650
30,778
 30,475
Customer relationships, less accumulated amortization of $6,519 and $6,3182,596
 2,797
Other intangible assets, less accumulated amortization of $2,105 and $2,0421,534
 1,531
Restricted cash31
 31
Customer relationships, less accumulated amortization of $7,450 and $7,09610,058
 10,876
Other intangible assets, less accumulated amortization of $2,412 and $2,3251,870
 1,897
Other, net838
 838
1,047
 1,286
Total goodwill and other assets24,618
 24,816
43,784
 44,565
TOTAL ASSETS$46,602
 47,017
$74,793
 75,611
LIABILITIES AND STOCKHOLDERS' EQUITY      
CURRENT LIABILITIES      
Current maturities of long-term debt$1,499
 1,503
$437
 443
Accounts payable994
 1,179
1,508
 1,555
Accrued expenses and other liabilities      
Salaries and benefits583
 802
798
 890
Income and other taxes460
 301
390
 370
Interest321
 260
386
 363
Other177
 213
428
 344
Current liabilities associated with assets held for sale406
 419
Advance billings and customer deposits656
 672
820
 892
Total current liabilities5,096
 5,349
4,767
 4,857
LONG-TERM DEBT18,180
 18,185
36,940
 37,283
DEFERRED CREDITS AND OTHER LIABILITIES      
Deferred income taxes, net3,461
 3,471
2,196
 2,413
Benefit plan obligations, net5,448
 5,527
5,085
 5,178
Other1,111
 1,086
2,362
 2,389
Total deferred credits and other liabilities10,020
 10,084
9,643
 9,980
COMMITMENTS AND CONTINGENCIES (Note 10)
 
COMMITMENTS AND CONTINGENCIES (Note 11)
 
STOCKHOLDERS' EQUITY      
Preferred stock—non-redeemable, $25.00 par value, authorized 2,000 shares, issued and outstanding 7 and 7 shares
 
Common stock, $1.00 par value, authorized 1,600,000 and 1,600,000 shares, issued and outstanding 548,845 and 546,545 shares549
 547
Preferred stock—non-redeemable, $25.00 par value, authorized 2,000 and 2,000 shares, issued and outstanding 7 and 7 shares
 
Common stock, $1.00 par value, authorized 1,600,000 and 1,600,000 shares, issued and outstanding 1,078,632 and 1,069,169 shares1,079
 1,069
Additional paid-in capital14,733
 14,970
23,316
 23,314
Accumulated other comprehensive loss(2,086) (2,117)(2,288) (1,995)
Retained earnings (accumulated deficit)110
 (1)
Retained earnings1,336
 1,103
Total stockholders' equity13,306
 13,399
23,443
 23,491
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY$46,602
 47,017
$74,793
 75,611
See accompanying notes to consolidated financial statements.

CENTURYLINK, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(UNAUDITED)
Three Months Ended March 31,Three Months Ended March 31,
2017 20162018 2017
(Dollars in millions)(Dollars in millions)
OPERATING ACTIVITIES      
Net income$163
 236
$115
 163
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization880
 976
1,283
 880
Deferred income taxes(37) 11
123
 (37)
Impairment of assets27
 
Provision for uncollectible accounts47
 46
47
 47
Net long-term debt issuance costs and premium amortization1
 (1)
Share-based compensation21
 18
41
 21
Changes in current assets and liabilities:      
Accounts receivable116
 26
117
 116
Accounts payable(81) 78
(14) (81)
Accrued income and other taxes206
 160
20
 206
Other current assets and liabilities, net(266) (72)(262) (266)
Retirement benefits(25) (21)(49) (25)
Changes in other noncurrent assets and liabilities, net12
 (35)145
 12
Other, net20
 1
74
 21
Net cash provided by operating activities1,057
 1,423
1,667
 1,057
INVESTING ACTIVITIES      
Payments for property, plant and equipment and capitalized software(780) (611)(805) (780)
Proceeds from sale of property45
 7
3
 45
Deposits received from assets held for sale34
 
Other, net3
 (1)
 3
Net cash used in investing activities(732) (605)(768) (732)
FINANCING ACTIVITIES      
Net proceeds from issuance of long-term debt
 227
130
 
Payments of long-term debt(31) (25)(68) (31)
Net proceeds (payments) on credit facility and revolving line of credit5
 (410)
Net (payments) proceeds on revolving line of credit(405) 5
Dividends paid(296) (290)(580) (296)
Proceeds from issuance of common stock3
 4

 3
Shares withheld to satisfy tax withholdings(14) (12)(25) (14)
Net cash used in financing activities(333) (506)(948) (333)
Net (decrease) increase in cash and cash equivalents(8) 312
Cash and cash equivalents at beginning of period222
 126
Cash and cash equivalents at end of period$214
 438
Effect of exchange rate changes on cash and cash equivalents(1) 
Net decrease in cash, cash equivalents and restricted cash(50) (8)
Cash, cash equivalents and restricted cash at beginning of period587
 224
Cash, cash equivalents and restricted cash at end of period$537
 216
Supplemental cash flow information:      
Income taxes refunded (paid), net$5
 (11)
Interest paid (net of capitalized interest of $20 and $12)$(255) (262)
Income taxes (paid) refunded, net$(2) 5
Interest paid (net of capitalized interest of $15 and $20)$(491) (255)
See accompanying notes to consolidated financial statements.

CENTURYLINK, INC.
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
(UNAUDITED)

Three Months Ended March 31,Three Months Ended March 31,
2017 20162018 2017
(Dollars in millions)(Dollars in millions)
COMMON STOCK      
Balance at beginning of period$547
 544
$1,069
 547
Issuance of common stock through dividend reinvestment, incentive and benefit plans2
 2
10
 2
Balance at end of period549
 546
1,079
 549
ADDITIONAL PAID-IN CAPITAL      
Balance at beginning of period14,970
 15,178
23,314
 14,970
Issuance of common stock through dividend reinvestment, incentive and benefit plans2
 2
(6) 2
Shares withheld to satisfy tax withholdings(14) (12)(25) (14)
Share-based compensation and other, net15
 16
33
 15
Dividends declared(240) 

 (240)
Balance at end of period14,733
 15,184
23,316
 14,733
ACCUMULATED OTHER COMPREHENSIVE LOSS      
Balance at beginning of period(2,117) (1,934)(1,995) (2,117)
Cumulative effect of adoption of ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income
(407) 
Other comprehensive income31
 27
114
 31
Balance at end of period(2,086) (1,907)(2,288) (2,086)
RETAINED EARNINGS      
Balance at beginning of period(1) 272
1,103
 (1)
Net income163
 236
115
 163
Cumulative effect of adoption of ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income
407
 
Cumulative effect of adoption of ASU 2014-09, Revenue from Contracts with Customers
297
 
Cumulative effect of adoption of ASU 2016-09, Improvements to Employee Share-Based Payment Accounting
3
 

 3
Dividends declared(55) (295)(586) (55)
Balance at end of period110
 213
1,336
 110
TOTAL STOCKHOLDERS' EQUITY$13,306
 14,036
$23,443
 13,306
See accompanying notes to consolidated financial statements.

CENTURYLINK, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(UNAUDITED)
References in the Notes to "CenturyLink," "we," "us" and "our" refer to CenturyLink, Inc. and its consolidated subsidiaries, unless the contentcontext otherwise requires and except in Note 4,5, where such references refer solely to CenturyLink, Inc. References in the Notes to "Level 3" refer to Level 3 Communications, Inc. prior to our acquisition thereof and to its successor-in-interest Level 3 Parent, LLC after such acquisition, unless the context otherwise requires.
(1)     Background
General
We are an integratedinternational facilities-based communications company engaged primarily in providing an integrated array of
services to our residential and business customers. Our communications services include local and long-distance voice, broadband, Multi-Protocol Label Switchingvirtual
private network ("MPLS"VPN"), data network, private line (including special access)business data services), Ethernet, colocation, hosting (including cloud hosting and managed hosting), data integration, video, network, public access, Voice over Internet Protocol ("VoIP"), information technology services, wavelength, broadband, colocation and data center services, managed services, professional and other services provided in connection with selling equipment, network security and various other ancillary services.
On October 31, 2016,November 1, 2017, we entered into a definitive merger agreement under which we agreed to acquireacquired Level 3 Communications, Inc. ("Level 3") in a cash and stock transaction. See Note 2—Pending Acquisition of Level 3 for additional information. On November 3, 2016,May 1, 2017, we entered into a definitive stock purchase agreement withsold our data centers and colocation business to a consortium led by BC Partners, Inc. and Medina Capital to sell our data centers and colocation business for a combination of cash and equity. See Note 3—Sale of Data Centers and Colocation Business for additional information.
Basis of Presentation
Our consolidated balance sheet as of December 31, 2016,2017, which was derived from our audited consolidated financial statements, and our unaudited interim consolidated financial statements provided herein have been prepared in accordance with the instructions for Form 10-Q. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") have been condensed or omitted pursuant to rules and regulations of the Securities and Exchange Commission ("SEC"); however, in our opinion, the disclosures made are adequate to make the information presented not misleading. We believe that these consolidated financial statements include all normal recurring adjustments necessary to fairly present the results for the interim periods. The consolidated results of operations and cash flows for the first three months of the year are not necessarily indicative of the consolidated results of operations and cash flows that might be expected for the entire year. These consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in our annual report on Form 10-K for the year ended December 31, 20162017.
The accompanying consolidated financial statements include our accounts and the accounts of our subsidiaries. These
subsidiaries include Level 3 on and after November 1, 2017. Intercompany amounts and transactions with our consolidated
subsidiaries have been eliminated. In connection with our acquisition of Level 3, we acquired its deconsolidated Venezuela
subsidiary and due to exchange restrictions and other conditions we have assigned no value to this subsidiary's assets. Additionally, we have excluded this subsidiary from our consolidated financial statements.
To simplify the overall presentation of our consolidated financial statements, we report immaterial amounts attributable to noncontrolling interests in certain of our subsidiaries as follows: (i) income attributable to noncontrolling interests in other income (expense) income,, net, (ii) equity attributable to noncontrolling interests in additional paid-in capital and (iii) cash flows attributable to noncontrolling interests in other, net financing activities.
We pay dividends out of retained earnings to the extent we have retained earnings on the date the dividend is declared. If the dividend is in excess of our retained earnings on the declaration date, then the excess is drawn from our additional paid-in capital.
We reclassified certain prior period amounts to conform to the current period presentation, including the categorization of our revenues and our segment reporting. See Note 9—10—Segment Information for additional information. These changes had no impact on total operating revenues, total operating expenses or net income for any period.
Income Taxes
On December 22, 2017, the Tax Cuts and Jobs Act (the "Act") was signed into law and in December 2017, the SEC staff issued Staff Accounting Bulletin (SAB) 118 to provide guidance for companies that have not completed their accounting for the income tax effects of the Act. As of March 31, 2018, we have not completed our accounting for the tax effects of the Act. In order to complete our accounting for the impact of the Act, we continue to obtain, analyze and interpret additional guidance as such guidance becomes available from the U.S. Treasury Department, the Internal Revenue Service (“IRS”), state taxing jurisdictions, the FASB, and other standard-setting and regulatory bodies. New guidance or interpretations may materially impact our provision for income taxes in future periods.

Additional information that is needed to complete the analysis but is currently unavailable includes, but is not limited to, the amount of earnings of foreign subsidiaries, the final determination of certain net deferred tax assets subject to remeasurement due to purchase accounting adjustments and other matters, and the tax treatment of such provisions of the Act by various state tax authorities. We have provisionally recognized the tax impacts related to the re-measurement of deferred tax assets and liabilities. The ultimate impact may differ from our provisional amount due to additional analysis, changes in interpretations and assumptions we have made, additional regulatory guidance that may be issued, and actions we may take as a result of the Act. The change from our current provisional estimates will be reflected in our future statements of operations and could be material. We expect to complete the accounting by the time we file our 2017 U.S. corporate income tax return in the fourth quarter of 2018, although we cannot assure you of this.
The Act reduced the U.S. corporate income tax rate from a maximum of 35% to 21% for all C corporations, effective January 1, 2018, and made certain changes to U.S. taxation of income earned by foreign subsidiaries, capital expenditures and various other items. As a result of the reduction in the U.S. corporate income tax rate from 35% to 21%, we provisionally re-measured our net deferred tax liabilities at December 31, 2017 and recognized a tax benefit of approximately $1.1 billion in our consolidated statement of operations for the year ended December 31, 2017. During the first three months of 2018, we reduced this $1.1 billion tax benefit of tax reform by $64 million due to changes in certain purchase accounting adjustments related to the Level 3 acquisition, which was reflected in income tax expense.

The Act imposed a one-time repatriation tax on certain earnings of foreign subsidiaries. Although we have not determined a reasonable estimate of the impact of the one-time repatriation tax, we do not expect this one-time tax to materially impact us, but we cannot provide any assurance that upon completion of the analysis the amount will not be material.

Because of our net operating loss carryforwards, we do not expect to experience a further material immediate reduction in the amount of cash income taxes paid by us. However, we anticipate that the provisions of the Act may reduce our cash income taxes in future years.
Recently Adopted Accounting Pronouncements
In the first quarter of 2017,2018, we adopted Accounting Standards Update (“ASU”) 2016-09, “Improvements to Employee Share Based Compensation” (“2014-09, “Revenue from Contracts with Customers”, ASU 2016-09”)2016-16, “Intra-Entity Transfers of Assets Other Than Inventory”, and ASU 2017-07, “Improving2018-02, “Income Statement-Reporting Comprehensive Income: Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income”.
Each of these is described further below.
Revenue Recognition
ASU 2014-09 ("ASC 606") replaces virtually all existing GAAP on revenue recognition with a principles-based approach for determining revenue recognition using a new five step model.
We adopted the Presentationnew revenue recognition standard under the modified retrospective transition method and recorded a cumulative catch-up as of Net Periodic Pension CostJanuary 1, 2018, which resulted in an increase to retained earnings of $297 million.
Upon adoption, we deferred (or capitalized) incremental customer contract acquisition costs and Net Periodic Postretirement Benefit Cost” (“ASU 2017-07”).plan to recognize such costs over the average customer life, which approximates the initial contract term and anticipated renewals for contracts to which such costs relate. Our deferred contract costs for our business and consumer customers have average amortization periods of approximately 49 months and 30 months, respectively, and are subject to being monitored every period to reflect any significant change in assumptions. In addition, we intend to assess our deferred contract cost asset for impairment on a periodic basis.
Promotional bill credits, discounts and prepaid cards offered to customers as part of renewing services or entering into a new services arrangement that are paid over time and are contingent on the customer maintaining a service contract results in an extended service contract term with multiple performance obligations, which impacts the allocation and timing of revenue recognition between service revenue and revenue assigned to the customer credits. The contract asset is subsequently amortized as a reduction to service revenue over the extended contract term.
Most of our indefeasible right of use arrangements, including certain long-term prepaid customer capacity arrangements, are accounted for as operating leases.
See Note 4—Revenue Recognition for additional information.
Comprehensive Income

Share-based CompensationASU 2018-02 provides an option to reclassify stranded tax effects within accumulated other comprehensive income to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act (or portion thereof) is recorded. If an entity elects to reclassify the income tax effects of the Tax Cuts and Jobs Act, the amount of that reclassification shall include the effect of the change in the U.S. federal corporate income tax rate on the gross deferred tax amounts and related valuation allowances, if any, at the date of enactment of the Tax Cuts and Jobs Act related to items remaining in accumulated other comprehensive income. The effect of the change in the U.S. federal corporate income tax rate on gross valuation allowances that were originally charged to income from continuing operations shall not be included. ASU 2018-02 is effective January 1, 2019, but early adoption is permitted and should be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. We early adopted and applied ASU 2018-02 in the first quarter of 2018. The adoption of ASU 2018-02 resulted in a $407 million increase to retained earnings and in accumulated other comprehensive loss. See Note 13Accumulated Other Comprehensive Loss for additional information.
Income Taxes
ASU 2016-09 modified2016-16 eliminates the accounting and associatedcurrent prohibition on the recognition of the income tax accounting for share-based compensation in order to reduceeffects on the cost and complexitytransfer of assets among our subsidiaries. Prospectively, the income tax effects associated with previous U.S. generally accepted accounting principles (“GAAP”). The primary provisionsthese asset transfers, except for the transfer of inventory, will be recognized in the period the asset is transferred versus the current deferral and recognition upon either the sale of the asset to a third party or over the remaining useful life of the asset. Our adoption of ASU 2016-09 that affect2016-16 did not have a material impact to our consolidated financial statements for the three months ended March 31, 2017 are:
1.A reclassification of the income tax effect associated with the difference between the expense recognized for share-based payments and the related tax deduction from additional paid-in capital to income tax expense. This change was applied on a prospective basis and resulted in a $7 million increase in income tax expense for the three months ended March 31, 2017.

2.We elected to change our accounting policy to account for forfeitures of share-based payment grants as they occur as opposed to our previous policy of estimating the forfeitures on the grant date. The cumulative effect of adopting this policy as of January 1, 2017 resulted in an increase of $3 million, net of a $2 million tax effect, in retained earnings (accumulated deficit).
Net Periodic Pension and Postretirement Benefit Costs
ASU 2017-07 modified the presentation of net periodic pension and postretirement benefit costs and requires the service cost component to be reported separately from the other components in order to provide more useful information. Under ASU 2017-07, the service cost component of net periodic pension and postretirement benefit costs is required to be presented in the same expense category as the related salary and wages for the employee. The other components of the net periodic pension and postretirement benefit costs are required to be recognized below operating income in other (expense) income, net in our consolidated statements of operations. This change was applied on a retrospective basis to all previous periods to match the current period presentation. This retrospective application resulted in a $6 million reduction in operating income and a corresponding decrease in total other expense, net for the three months ended March 31, 2016.statements.
Recent Accounting Pronouncements
Goodwill Impairment
On January 26, 2017, The Financial Accounting Standards Board (“FASB”)the FASB issued ASU 2017-04, “Simplifying the Test for Goodwill Impairment” (“ASU 2017-04”). ASU 2017-04 simplifies the impairment testing for goodwill by changing the measurement for goodwill impairment. Under current rules, we are required to compute the implied fair value of goodwill to measure the impairment amount if the carrying value of a reporting unit exceeds its fair value. Under ASU 2017-04, the goodwill impairment charge will equal the excess of the reporting unit carrying value above its fair value, limited to the amount of goodwill assigned to the reporting unit.
We are required to adopt the provisions of ASU 2017-04 for any goodwill impairment tests, including our required annual test, occurring after January 1, 2020, but have the option to early adopt it for any impairment test that we are required to perform. We have not determined if we will elect to early adopt the provisions of ASU 2017-04. The provisions of ASU 2017-04 would not have affected our last goodwill impairment assessment, but no assurance can be provided that the simplified testing methodology will not affect our goodwill impairment assessment in the future.
Income Taxes
On October 24, 2016, the FASB issued ASU 2016-16, “Intra-Entity Transfers of Assets Other Than Inventory” ("ASU 2016-16"). ASU 2016-16 eliminates the current prohibition on the recognition of the income tax effects on the transfer of assets among our subsidiaries. After adoption of this ASU, the income tax effects associated with these asset transfers, except for the transfer of inventory, will be recognized in the period the asset is transferred versus the current deferral and recognition upon either the sale of the asset to a third party or over the remaining useful life of the asset. We are currently reviewing the requirements of this ASU and evaluating the impact on our consolidated financial statements.
We are required to adopt the provisions of ASU 2016-16 on January 1, 2018, but have the option to early adopt as of January 1, 2017. We plan to adopt the provision of ASU 2016-16 on January 1, 2018. The impact of adopting ASU 2016-16, if any, will be recognized through a cumulative adjustment to retained earnings as of the date of adoption.

Financial Instruments
On June 16, 2016, the FASB issued ASU 2016-13, "Measurement of Credit Losses on Financial Instruments" ("ASU 2016-13"). The primary impact of ASU 2016-13 for us is a change in the model for the recognition of credit losses related to our financial instruments from an incurred loss model, which recognized credit losses only if it was probable that a loss had been incurred, to an expected loss model, which requires our management team to estimate the total credit losses expected on the portfolio of financial instruments. We are currently reviewing the requirements of the standard and evaluating the impact on our consolidated financial statements.
We are required to adopt the provisions of ASU 2016-13 effective January 1, 2020, but could elect to early adopt the provisions as of January 1, 2019. We expect to recognize the impacts of adopting ASU 2016-13 through a cumulative adjustment to retained earnings as of the date of adoption. As of the date of this report, we have not yet determined the date we will adopt ASU 2016-13.
Leases
On February 25, 2016, the FASB issued ASU 2016-02, “Leases” (“ASU 2016-02”). The core principle of ASU 2016-02 will require lessees to present right-of-use assets and lease liabilities on their balance sheets for operating leases, which under GAAP are currently not required to be reflected on their balance sheets.

ASU 2016-02 is effective for annual and interim periods beginning January 1, 2019. Early adoption of ASU 2016-02 is permitted. Upon adoption of ASU 2016-02, we are required to recognize and measure leases at the beginning of the earliest period presented in our consolidated financial statements using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients that we may elect to apply.
On January 25, 2018, the FASB issued ASU 2018-01, “Leases: Land Easement Practical Expedient for Transition to ASU 2016-02. ASU 2018-01 permits reporting companies to elect to forego reassessments of land easements that exist or expire before the entity’s adoption of ASU 2016-02 and that were not previously accounted for as leases. We will implement this new standard on its effective date, butplan to adopt ASU 2018-01 at the same time we have not yet decided which practical expedient options we will elect.adopt ASU 2016-02.
We are currently evaluating our existing lease accounting systems to determine whether our current systems will support the new accounting requirements or if upgrades or new systems will be required, and we are in the process of developing an implementation plan.implementing a new lease administration and accounting system. We are also currently evaluatingplan to adopt ASU 2016-02 and assessing the impactASU 2018-01 effective January 1, 2019. The adoption of ASU 2016-02 will result in our recognition of right of use assets and lease liabilities that we have on us and our consolidated financial statements. Asnot previously recorded. Although we believe it is premature as of the date of this report we cannotto provide any estimate of the impact of adopting ASU 2016-02.
Revenue Recognition
On May 28, 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”). ASU 2014-09 replaces virtually all existing GAAP on revenue recognition and replaces them with a principles-based approach for determining revenue recognition using a new five step model. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 also includes new accounting principles related to the deferral and amortization of contract acquisition and fulfillment costs. We currently do not defer any contract acquisition costs, but we expect we will defer certain contract acquisition costs in the future, which could have the impact of lowering our operating expenses. We currently defer contract fulfillment costs only to the extent of any deferred revenue. Under ASU 2014-09, in certain transactions our deferred contract fulfillment costs could exceed our deferred revenues, which could result in an increase in deferred costs and could also have the impact of lowering our operating expenses.
On July 9, 2015, the FASB approved the deferral of the effective date of ASU 2014-09 by one year until January 1, 2018, which is the date we plan to adopt this standard. ASU 2014-09 may be adopted by applying the provisions of this standard on a retrospective basis to the periods included in the financial statements or on a modified retrospective basis, which would result in the recognition of a cumulative effect of adopting ASU 2014-09 in the first quarter of 2018. We have completed our initial assessment of our business and systems requirements, and we are currently developing and implementing a new revenue recognition system to comply with the requirements of ASU 2014-09. Based on this initial assessment, we currently plan to adopt the new revenue recognition standard under the modified retrospective transition method. Until we are further along in implementing our new revenue recognition system,2016-02, we do not anticipate being able to provide reasonably accurate estimatesexpect that it will have a material impact on our consolidated financial statements. Additionally, upon implementing ASU 2016-02, accounting for the failed-sale-leaseback transaction described in Note 3Sale of Data Centers and Colocation Business will no longer be applicable based on our facts and circumstances, and the impact of ASU 2014-09 on the timing ofreal estate assets and corresponding financing obligation described therein will be derecognized from our revenue recognition.consolidated balance sheet.

(2)    Pending    Acquisition of Level 3
On October 31, 2016, weNovember 1, 2017, CenturyLink acquired Level 3 through successive merger transactions, including a merger of Level 3 with and into a merger subsidiary, which survived such merger as our indirect wholly-owned subsidiary under the name of Level 3 Parent, LLC. We entered into this acquisition to, among other things, realize certain strategic benefits, including enhanced financial and operational scale, market diversification and an enhanced combined network. As a definitive merger agreement under which we propose to acquire Level 3 in a cash and stock transaction. Under the termsresult of the agreement,acquisition, Level 3 shareholders will receivereceived $26.50 per share in cash and 1.4286 shares of CenturyLink common stock, with cash paid in lieu of fractional shares, for each outstanding share of Level 3 common stock they ownowned at closing.closing, subject to certain limited exceptions. We issued this consideration with respect to all of the outstanding common stock of Level 3, with the exception of shares held by the dissenting common shareholders. Upon closing, CenturyLink shareholders are expected to ownowned approximately 51% and former Level 3 shareholders are expected to ownowned approximately 49% of the combined companycompany.
In addition, each outstanding Level 3 restricted stock unit award granted prior to April 1, 2014 or granted to an outside director of Level 3 was converted into the right to receive $26.50 in cash and 1.4286 shares of CenturyLink common stock (and cash in lieu of fractional shares) with respect to each Level 3 share covered by such award (the "Converted RSU Awards"). Each outstanding Level 3 restricted stock unit award granted on or after April 1, 2014 (other than those granted to outside directors of Level 3) was converted into a CenturyLink restricted stock unit award using a conversion ratio of 2.8386 to 1 as determined in accordance with a formula set forth in the merger agreement (“the Continuing RSU Awards”).
As of March 31, 2018, our preliminary estimated amount of aggregate consideration of $19.612 billion is based on:
the 517.3 million shares of CenturyLink’s common stock (including those issued in connection with the Converted RSU Awards) issued to consummate the acquisition and the closing stock price of CenturyLink common stock at closing. OnOctober 31, 2017 of $18.99;
the cash consideration of $26.50 per share on the 362.2 million common shares of Level 3 issued and outstanding as of October 31, 2017, and the cash consideration of $1 million paid on the Converted RSUs awards;
the estimated value of $131 million for the Continuing RSU Awards, which represents the pre-combination portion of Level 3’s share-based compensation awards replaced by CenturyLink share based awards; and
the approximately $58.0 million of cash paid to settle claims of former holders of dissenting shares.
At closing, CenturyLink assumed Level 3's long-term debt of approximately $10.6 billion.
The aggregate cash payments paid on or about the closing date were funded with the proceeds of $7.945 billion of term loans and $400 million of funds borrowed under our new revolving credit facility together with other available funds, which included $1.825 billion borrowed from Level 3 Parent, LLC. For additional information regarding CenturyLink’s financing of the Level 3 acquisition see Note 5—Long-Term Debt and Credit Facilities.

We have recognized the assets and liabilities of Level 3 based on CenturyLink’s preliminary estimates of the fair value of the acquired tangible and intangible assets and assumed liabilities of Level 3 as of November 1, 2017, the consummation date of the acquisition, with the excess aggregate consideration recorded as goodwill. The final determination of the allocation of the aggregate consideration paid by CenturyLink in the combination will be based on the fair value of such assets and liabilities as of the acquisition date with any excess aggregate consideration to be recorded as goodwill. The estimation of such fair values and the estimation of lives of depreciable tangible assets and amortizable intangible assets require significant judgment. As such, we have not completed our valuation analysis and calculations in sufficient detail necessary to arrive at the final estimates of the fair value of Level 3’s assets acquired and liabilities assumed, along with the related allocation to goodwill. The fair values of certain tangible assets, intangible assets, certain liabilities and residual goodwill are the most significant areas not yet finalized and therefore are subject to change. We expect to complete our final fair value determinations prior to the anniversary date of the acquisition. Our final fair value determinations may be significantly different than those reflected in our consolidated financial statements at March 31, 2018.
The U.S. Department of Justice approved the acquisition subject to conditions of a consent decree on October 2, 2017, which requires us to divest (i) certain metro network assets in the markets located in Albuquerque, New Mexico; Boise, Idaho; and Tucson, Arizona and (ii) 24 strands of dark fiber connecting 30 specified city-pairs across the United States in the form of an indefeasible right of use agreement. The metro network assets are classified as assets held for sale on the consolidated balance sheets as of March 31, 2018 and December 31, 2016, 2017. For additional information on the status of these divestiture proceedings, see "Subsequent Events" below in this Note 2.
Based solely on our preliminary estimates through March 31, 2018, the aggregate consideration exceeds the aggregate estimated fair value of the acquired assets and assumed liabilities by $11.141 billion, which we have recognized as goodwill. The goodwill is attributable to strategic benefits, including enhanced financial and operational scale, market diversification and leveraged combined networks that we expect to realize. None of the goodwill associated with this acquisition is deductible for income tax purposes.
As of March 31, 2018, the following is our updated assignment of the preliminary estimated aggregate consideration:
 Adjusted November 1, 2017 Balance as of December 31, 2017 Purchase Price Adjustments Adjusted November 1, 2017 Balance as of March 31, 2018
 (Dollars in millions)
Cash, accounts receivable and other current assets (1)
$3,317
 (3) 3,314
Property, plant and equipment9,311
 92
 9,403
Identifiable intangible assets (2)
    

Customer relationships8,964
 (476) 8,488
Other391
 (13) 378
Other noncurrent assets782
 156
 938
Current liabilities, excluding current maturities of long-term debt(1,461) 
 (1,461)
Current maturities of long-term debt(7) 
 (7)
Long-term debt(10,888) 
 (10,888)
Deferred revenue and other liabilities(1,629) (65) (1,694)
Goodwill10,837
 304
 11,141
Total estimated aggregate consideration$19,617
 (5) 19,612
____________________________________________________________________________________________________________                
(1)
Includes a preliminary estimated fair value of $866 million for accounts receivable, which had a gross contractual value of $884 million on November 1, 2017. The $18 million difference between the gross contractual value and the preliminary estimated fair value assigned represents our best estimate as of November 1, 2017 of contractual cash flows that will not be collected.
(2)
The preliminary estimate of the weighted-average amortization period for the acquired intangible assets is approximately 12.0 years.
Based upon the changes in the purchase price allocation as of March 31, 2018, our revised estimated amortization expense for intangible assets for the years ending December 31, 2018 through 2022 is as follows:

 (Dollars in millions)
Remainder of 2018$1,313
20191,677
20201,575
20211,143
2022957
On the acquisition date, we assumed Level 3’s contingencies. For more information on our contingencies, see Note 11—Commitments and Contingencies.
Acquisition-Related Expenses
We have incurred acquisition-related expenses related to our acquisition of Level 3. The table below summarizes our acquisition-related expenses, which consist of integration-related expenses, including severance and retention compensation expenses, and transaction-related expenses:
 Three Months Ended March 31,
 2018 2017
 (Dollars in millions)
Transaction-related expenses$1
 10
Integration-related expenses70
 
Total acquisition-related expenses$71
 10
Through March 31, 2018, we had incurred cumulative acquisition-related expenses of $393 million for Level 3. The total amounts of these expenses have been included in our selling, general and administrative expenses beginning in the fourth quarter of 2016.
Level 3 had outstanding $10.9 billionincurred transaction-related expenses of long-term debt.$47 million on the date of acquisition. This amount is not included in our results of operations.
References to Acquired Businesses
In the discussion that follows, we refer to the incremental business activities that we now operate as a result of the Level 3 acquisition as “Legacy Level 3”. References to “Legacy CenturyLink”, when used to compare our consolidated results for the three months ended March 31, 2018 and 2017, mean the business we operated prior to the Level 3 acquisition.
As a result of the acquisition of Level 3's net operating losses ("NOLs"), we expect to significantly reduce our federal cash taxes for the next several years.
Combined Pro Forma Operating Results (Unaudited)
For the three months ended March 31, 2018, CenturyLink's results of operations included operating revenues (net of intercompany eliminations) attributable to Level 3 of $2.062 billion.
The merger agreement was approved byfollowing unaudited pro forma financial information presents the combined results of CenturyLink as if the Level 3 acquisition had been consummated as of January 1, 2017.
Three Months Ended March 31, 2017
Operating revenues6,194
Net income172
Basic earnings per common share0.16
Diluted earnings per common share0.16

This pro forma information reflects certain adjustments to previously-reported operating results, consisting primarily but not exclusively of:
decreased operating revenues and expenses due to the elimination of deferred revenues associated with installation activities that were preliminarily assigned no value at the acquisition date (excluding certain deferred revenue associated with certain long-term prepaid customer capacity arrangements, which have been included at its current carrying value) and the elimination of transactions among CenturyLink and Level 3 shareholders at special meetings heldthat are now subject to intercompany elimination;
increased amortization expense related to identifiable intangible assets, net of decreased depreciation expense to reflect the preliminary fair value of property, plant and equipment;
increased interest expense resulting from (i) interest on March 16, 2017. Completionthe new debt to finance the combination and amortization of the related debt discount and debt issuance costs, (ii) the elimination of Level 3’s historical amortization of debt discount and debt issuance costs and (iii) a reduction in interest expense due to the accretion of an adjustment to reflect the increased preliminary fair value of the long-term debt of Level 3 recognized on the acquisition date; and
the related income tax effects.
The pro forma information is presented for illustrative purposes only and does not necessarily reflect the actual results of operations had the Level 3 acquisition been consummated at January 1, 2017, nor is it necessarily indicative of future operating results. The pro forma information excludes transaction costs incurred by us and Level 3 during the quarterly periods presented above (which are further described above in this note) and does not reflect integration costs to be incurred by us in future periods. In addition, the pro forma information does not give effect to any potential revenue enhancements, cost synergies or other operating efficiencies that could result from the acquisitions (other than those actually realized in our historical consolidated financial statements after November 1, 2017).
As a result of the acquisition of Level 3's net operating losses ("NOLs"), we expect to significantly reduce our federal cash taxes for the next several years.
Subsequent Events
On May 4, 2018, we sold Level 3 network assets in Boise that we were required to divest as a condition to the merger. These assets were classified as assets held for sale on our March 31, 2018 and December 31, 2017 consolidated balance sheets and no gain or loss was recognized on this transaction.
On January 22, 2018, we entered an agreement to sell certain Level 3 intangible assets for $68 million. We received a deposit of $34 million in the first quarter of 2018 and it is subject to (i) therecorded in other current liabilities on our March 31, 2018 consolidated balance sheet. The receipt of regulatory approvals, includingthis $34 million is reflected in our cash flows from investing activities on our March 31, 2018 statement of cash flows. The remaining $34 million was collected in the expiration or terminationsecond quarter of the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act, (ii) approvals from the Federal Communications Commission ("FCC") and certain state regulatory authorities and (iii) other customary closing conditions. Subject to these conditions, we anticipate closing this transaction by the end of the third quarter 2017.2018.
(3)    Sale of Data Centers and Colocation Business
On November 3, 2016,May 1, 2017, we entered into a definitive stock purchase agreement to sellsold our data centers and colocation business to a consortium led by BC Partners, Inc. and Medina Capital in exchange for cash and a minority stake in the limited partnership that owns the consortium's newly-formed global secure infrastructure company, Cyxtera Technologies. The sale received final regulatory approval in April and closed on May 1, 2017.Technologies ("Cyxtera").
We received initial pre-tax cash proceeds of $1.86$1.8 billion, and we have valued our minority stake at $150 million, which is subjectwas based upon the total equity contribution to customary post-closing adjustments. We planthe limited partnership on the date made.

In connection with our sale of the data centers and colocation business to useCyxtera, we agreed to lease back from Cyxtera a portion of these after-tax netthe data center space to provide data hosting services to our customers. Because we have continuing involvement in the business through our minority stake in Cyxtera's parent, we do not meet the requirements for a sale-leaseback transaction as described in ASC 840-40, Leases - Sale-Leaseback Transactions. Under the failed-sale-leaseback accounting model, we are deemed under GAAP to still own certain real estate assets sold to Cyxtera, which we must continue to reflect on our consolidated balance sheet and depreciate over the assets' remaining useful life. We must also treat a certain amount of the pre-tax cash proceeds to partly fundfrom the sale of the assets as though it were the result of a financing obligation on our acquisitionconsolidated balance sheet, and our consolidated results of Level 3.operations must include imputed revenue associated with the portion of the real estate assets that we have not leased back and imputed interest expense on the financing obligation. A portion of the rent payments required under our leaseback arrangement with Cyxtera are recognized as reductions of the financing obligation, resulting in lower recognized rent expense than the amounts actually paid each period. At the end of the lease term, the remaining imputed financing obligation and the remaining net book value of the real estate assets will be derecognized. Please see "Leases" (ASU 2016-02) in Note 1—Background for additional information on the impact the new lease standard will have on the accounting for the failed-sale-leaseback.
The following table reflects the assets sold to and the liabilities assumed by Cyxtera on May 1, 2017, including our most current estimates of the impact of failed-sale-leaseback:
 Dollars in millions
Goodwill$1,142
Property, plant and equipment1,051
Other intangible assets249
Other assets66
Less assets recorded as part of the failed-sale-leaseback(526)
Total net amount of assets derecognized$1,982
  
Capital lease obligations$294
Other liabilities274
Less imputed financing obligations from the failed-sale-leaseback(628)
Total net imputed liabilities recognized$(60)
We evaluated our minority stake in the limited partnership and determined that we were not the primary beneficiary of the entity. As a result, of the sale, we classified our $150 million investment in the followinglimited partnership in other assets and liabilities as assets held for sale and liabilities associated with the assets held for sale, respectively, on our consolidated balance sheet as of March 31, 2017:2018.

(4)     Revenue Recognition
The following table presents our reported results under ASC 606 and a reconciliation to results using the historical accounting method:
 Three Months Ended March 31, 2018
 
(Dollars in millions, except per share amounts
and shares in thousands)
 Reported Balances as of March 31, 2018 Impact of 606 
ASC 605
Historical Adjusted Balances
Operating revenues$5,945
 15
 $5,960
Cost of services and products (exclusive of depreciation and amortization)2,803
 (4) 2,799
Selling, general and administrative1,109
 13
 1,122
Income tax expense121
 2
 123
Net income$115
 4
 $119
      
BASIC AND DILUTED EARNINGS PER COMMON SHARE     
BASIC$0.11
 
 $0.11
DILUTED$0.11
 
 $0.11
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING     
BASIC1,065,796
 
 1,065,796
DILUTED1,069,183
 
 1,069,183
The following table presents a reconciliation of certain consolidated balance sheet captions under ASC 606 to the balance sheet results using the historical accounting method:
 As of March 31, 2018
 (Dollars in millions)
 Reported Balances as of March 31, 2018 Impact of 606 
ASC 605
Historical Adjusted Balances
Other current assets$1,105
 (171) $934
Other long-term assets, net1,047
 (79) 968
Advance billing and customer deposits820
 75
 895
Deferred income taxes, net2,196
 (2) 2,194
Other long-term liabilities2,362
 82
 2,444
Retained earnings1,336
 (293) 1,043

Pursuant to ASU 2014-09 discussed in Note 1 above, the following table provides disaggregation of revenue from contracts with customers:
   Dollars in millions
Goodwill  $1,141
Property, plant and equipment  1,068
Other intangible assets  258
Other assets  37
Impairment on assets held for sale  (11)
Total amount classified as assets held for sale(1)
  $2,493
    
Capital lease obligations  $297
Other liabilities  109
Total liabilities associated with assets held for sale  $406

 Three Months Ended March 31, 2018
 (Dollars in millions)
 Total Revenue Adjustments for Non-ASC 606 Revenue (8) Total Revenue from Contracts with Customers
Business segment     
IP & Data Services (1)$1,748
 
 $1,748
Transport & Infrastructure (2)1,362
 (67) 1,295
Voice & Collaboration (3)1,111
 
 1,111
IT & Managed Services (4)162
 
 162
Total business segment revenues4,383
 (67) 4,316
      
Consumer segment     
Voice & Collaboration (3)526
 
 526
IP & Data Services (5)97
 (9) 88
Transport & Infrastructure (6)756
 (53) 703
Total consumer segment revenues1,379
 (62) 1,317
      
Non-segment revenues

 

 

Regulatory revenues (7)183
 (183) 
Total non-segment revenues183
 (183) 
      
Total revenues$5,945
 (312) $5,633
      
Timing of Revenue     
Goods transferred at a point in time    $39
Services performed over time    5,594
Total revenues from contracts with customers    $5,633
(1)
(1
A portion)Includes primarily VPN data network, Ethernet, IP, video and ancillary revenues.
(2)Includes primarily broadband, private line (including business data services), colocation and data centers, wavelength and ancillary revenues.
(3)Includes local, long-distance and other ancillary revenues.
(4)Includes IT services and managed services revenues.
(5)Includes retail video revenues (including our facilities-based video revenues).
(6)Includes primarily broadband and equipment sales and professional services revenues.
(7)Includes CAF Phase I, CAF Phase 2, federal and state USF support revenue, sublease rental income and failed-sale leaseback income.
(8)Includes regulatory revenues, lease revenues, sublease rental income and failed sale leaseback income, which are not within the scope of the assets equivalent to the estimated fair value of our anticipated minority stake in Cyxtera Technologies is reflected in non-current other assets on our consolidated balance sheet as of March 31, 2017.ASC 606.
EffectiveThe following table provides balances of customer receivables, contract assets and contract liabilities as of March 31, 2018 and January 1, 2018:
 March 31, 2018January 1, 2018
 (Dollars in millions)
Customer receivables(1)
$2,378
$2,504
Contract liabilities572
623
Contract assets188
255

(1) Gross customer receivables of $2.537 million and $2.659 million, net of allowance for doubtful accounts of $159 million and $155 million, at March 31, 2018 and January 1, 2018, respectively.
Contract liabilities constitute consideration we have received from our customers in exchange for services or products to be delivered by us in the future. We defer recognizing this consideration as revenue until we have satisfied the related performance obligation to the customer.
We recognize revenue for services when we provide the applicable service or when control is transferred. Recognition of certain payments received in advance of services being provided is deferred until the service is provided. These advance payments include certain activation and certain installation charges, which we recognize as revenue over the expected contract term, which ranges from one year to over seven years depending on the service. In most cases, termination fees or other fees on existing contracts that are negotiated in conjunction with new contracts are deferred and recognized over the new contract term.
We offer bundle discounts to our customers who receive certain groupings of services. These bundle discounts are included in our calculation of the total transaction price with the date we entered intocustomer which is allocated to the agreementvarious services in the bundled offering based on the standalone selling price of services included in each bundled combination.
Customer contracts that include both equipment and services are evaluated to selldetermine whether the data centersperformance obligations are separable. If the performance obligations are deemed separable and colocation business, we ceased recording depreciationseparate earnings processes exist, the total transaction price with the customer is allocated to each performance obligation based on the relative standalone selling price of the property, plant and equipmentseparate performance obligation. The standalone selling price is the price we sell to similar customers. The total transaction price is the total consideration that we expect to be soldentitled to (excluding amounts subject to revenue constraints) in exchange for transferring the equipment and services to the customer under the existing contract. The revenue associated with each performance obligation is then recognized as earned. For example, if we receive an advance payment when we sell equipment and continuing service together, we immediately recognize as revenue the amount of the total transaction price allocated to the equipment at the time title or control is transferred to the customer. The portion of the advance payment allocated to the service based upon its relative selling price is recognized ratably over the contract term.
We periodically permit other telecommunications carriers to use optical capacity on our network. These transactions are structured as indefeasible rights of use, commonly referred to as IRUs, which are the exclusive right to use a specified amount of capacity or fiber for a specified term, typically 20 years. We account for the cash consideration received on transfers of optical capacity and fiber assets and on all of the other elements deliverable under an IRU, as lease revenue, non ASC 606, ratably over the term of the agreement. We do not recognize revenue on any contemporaneous exchanges of our optical capacity assets for other optical capacity assets.
In connection with offering products and services provided to the end user by third-party vendors, we review the relationship between us, the vendor and the end user to assess whether revenue should be reported on a gross or net basis. In assessing whether revenue should be reported on a gross or net basis, we consider whether we act as a principal in the transaction and control the goods and services used to fulfill the performance obligation(s) associated with the transaction. Based on our agreement with DIRECTV, we offer this service through a sales agency relationship which we report on a net basis.
We have service level commitments pursuant to contracts with certain of our customers. To the extent that such service levels are not achieved or are otherwise disputed due to performance or service issues or other service interruptions or conditions, we will estimate the amount of credits to be issued and record a reduction to revenues in the period that the service level commitment was not met.
As of March 31, 2018, our estimated revenue expected to be recognized in the future related to performance obligations associated with customer contracts that are unsatisfied (or partially satisfied) is approximately $15.5 billion. We expect to recognize approximately 50% of this revenue through 2020, with the balance recognized thereafter.

The following table provides changes in our contract acquisition costs and fulfillment costs:
 Three Months Ended March 31, 2018
 (Dollars in millions)
 Acquisition Costs Fulfillment Costs
Beginning of period balance$254
 73
Costs incurred37
 6
Amortization(37) (10)
Impairments
 
End of period balance$254
 69
We expect that incremental commissions paid as a result of obtaining contracts and costs incurred to fulfill customer contracts are recoverable and therefore capitalized them as acquisition and fulfillment costs in the amount of $323 million at March 31, 2018. The amount of these capitalized costs that are anticipated to be amortized in the next twelve months are included in other current assets on the consolidated balance sheet. The amount of capitalized costs expected to be amortized beyond the next twelve months is included in other assets on our consolidated balance.
Capitalized commissions and fulfillment costs are amortized based on the transfer of services to which the assets relate to which typically range from 30 months to 49 months. The amortization of the intangible assets. We estimate that we would have recorded $50 million of depreciation and amortization expense in the first quarter of 2017 if we had not met the held-for-sale criteria.
After factoring in the costs to sell the data centers and colocation business, we estimate the net carrying value of the assets and liabilities sold exceeded the value of the proceeds we received by approximately $11 million, which was recorded as an impairment losscapitalized commissions are included in selling, general and administrationadministrative expenses and the amortization of capitalized fulfillment costs are included in cost of services and products (exclusive of depreciation and amortization) in our consolidated statement of operations foroperations. We recognize the three months ended March 31, 2017. We further estimate, due toincremental costs of obtaining contracts as an expense when incurred if the sale and related corporate actions we have taken regarding certain subsidiaries involved inamortization period of the data centers and colocation business, that we will trigger tax expense relating to the sale totaling approximately $75 million to $150 million, $18 million of which was accrued in 2016, $15 million of which was accrued in the three months ended March 31, 2017, with the remainder to be expensed in the three months ending June 30, 2017.assets is less than one year.

(4)(5) Long-Term Debt and Credit Facilities
Long-termThe following chart reflects the consolidated long-term debt of CenturyLink, Inc. and its subsidiaries, including unamortized discounts and premiums and unamortized debt issuance costs, consisting of borrowings by CenturyLink, Inc. and certain of its subsidiaries, including Qwest Corporation, Qwest Capital Funding, Inc. and Embarq Corporation and its subsidiaries ("Embarq"), were as follows:but excluding intercompany debt:
Interest Rates Maturities As of
March 31, 2017
 As of
December 31, 2016
Interest Rates(1)
 Maturities 
As of
March 31, 2018
 As of
December 31, 2017
    (Dollars in millions)    (Dollars in millions)
Senior Secured Debt:    
CenturyLink, Inc.    
2017 Revolving Credit Facility(2)
N/A 2022 $
 405
Term Loan A4.627% 2022 1,686
 1,575
Term Loan A-14.627% 2022 365
 370
Term Loan B4.627% 2025 5,985
 6,000
Subsidiaries:    
Level 3 Financing, Inc.    
Tranche B 2024 Term Loan4.111% 2024 4,611
 4,611
Embarq Corporation subsidiaries    
First mortgage bonds7.125% - 8.375% 2023 - 2025 138
 151
Senior Notes and Other Debt:       
CenturyLink, Inc.           
Senior notes5.150% - 7.650% 2017 - 2042 $8,975
 8,975
5.625% - 7.650% 2019 - 2042 8,125
 8,125
Credit facility and revolving line of credit(1)
4.750% 2019 375
 370
Term loan2.740% 2019 330
 336
Subsidiaries    
Subsidiaries:    
Level 3 Financing, Inc.    
Senior notes5.125% - 6.125% 2021 - 2026 5,315
 5,315
Level 3 Parent, LLC    
Senior notes5.750% 2022 600
 600
Qwest Corporation        
Senior notes6.125% - 7.750% 2017 - 2056 7,259
 7,259
6.125% - 7.750% 2021 - 2057 7,294
 7,294
Term loan2.740% 2025 100
 100
3.890% 2025 100
 100
Qwest Capital Funding, Inc.        
Senior notes6.500% - 7.750% 2018 - 2031 981
 981
6.500% - 7.750% 2018 - 2031 981
 981
Embarq Corporation and subsidiaries    
Embarq Corporation and subsidiary    
Senior note7.995% 2036 1,485
 1,485
7.995% 2036 1,485
 1,485
First mortgage bonds7.125% - 8.770% 2017 - 2025 223
 223
Other9.000% 2019 150
 150
9.000% 2019 150
 150
Capital lease and other obligationsVarious Various 423
 440
Various Various 868
 891
Unamortized discounts, net    (135) (133)
Unamortized premiums and other, net    17
 23
Unamortized debt issuance costs (190) (193) (343) (350)
Total long-term debt    19,976
 19,993
    37,377
 37,726
Less current maturities not associated with assets held for sale    (1,499) (1,503)
Less capital lease obligations associated with assets held for sale(2)
 (297) (305)
Long-term debt, excluding current maturities and capital leases obligations associated with assets held for sale    $18,180
 18,185
Less current maturities    (437) (443)
Long-term debt, excluding current maturities    $36,940
 37,283
______________________________________________________________________ 
(1) 
The aggregate amount outstanding on our Credit Facility and revolving lineAs of credit borrowings at March 31, 2017 and December 31, 2016 was $375 million and $370 million, respectively, with a weighted-average interest rate of 4.750%and4.500%, respectively. These amounts change on a regular basis.2018.
(2) 
The capital lease obligations associatedaggregate amount outstanding on our revolving line of credit borrowings atDecember 31, 2017 was$405 million, with our data centers and colocation businessa weighted-average interest rate of $297 million as of4.186%. At March 31, 2018, we had no borrowings outstanding under our 2017 were assumed by the Purchaser at closing. See Note 3—Salecredit facility or revolving line of Data Centers and Colocation Business for additional information.credit. These amounts change on a regular basis.

Repayments
On January 21, 2018, a subsidiary of Embarq Corporation redeemed all $13 million of its 8.77% Notes due 2019, which resulted in an immaterial loss.
2017 CenturyLink Credit Agreement
On January 29, 2018, the 2017 CenturyLink Credit Agreement was amended to:
Add a lender to the 2017 Revolving Credit Facility and to increase CenturyLink, Inc.’s borrowing capacity thereunder to approximately $2.168 billion; and
Add a lender to the Term Loan A credit facility and to increase CenturyLink, Inc.’s borrowing capacity thereunder to approximately $1.707 billion.
In connection with this amendment, the new lender provided approximately $132 million of Term Loan A loan proceeds, which CenturyLink used, together with available cash, to reduce its borrowings under the 2017 Revolving Credit Facility.
Covenants
As of March 31, 2017, we believe we2018, CenturyLink, Inc. believes it and its subsidiaries were in compliance with the provisions and covenants contained in our Credit Facility and othertheir material debt agreements.

Subsequent Events
On May 4, 2017, Qwest Corporation redeemed all $500 millionFor additional information on our long-term debt and credit facilities, see Note 5Long-Term Debt and Credit Facilities to our consolidated financial statements in Item 8 of its 6.5% Notes due 2017, which resulted in an immaterial loss.
On April 27, 2017, Qwest Corporation issued $575 million aggregate principal amountPart II of 6.75% Notes due 2057 in exchangeour annual report on Form 10-K for net proceeds, after deducting underwriting discounts and other expenses, of $555 million. All of the 6.75% Notes are unsecured obligations and may be redeemed by Qwest Corporation, in whole or in part, on or after June 15, 2022, at a redemption price equal to 100% of the principal amount redeemed plus accrued and unpaid interest to the redemption date.
On April 3, 2017, CenturyLink, Inc. paid at maturity the $500 million principal and accrued and unpaid interest due under its 6.00% Notes.year ended December 31, 2017.
(5)(6)  Severance and Leased Real Estate
Periodically, we reduce our workforce and accrue liabilities for the related severance costs. These workforce reductions resulted primarily from the progression or completion of our post-acquisition integration plans, increased competitive pressures, cost reduction initiatives, process improvements through automation and reduced workload demands due to the loss of customers purchasing certain services.
We report severance liabilities within accrued expenses and other liabilities - salaries and benefits in our consolidated balance sheets and report severance expenses in selling, general and administrative expenses in our consolidated statements of operations. As described in Note 9—Segment Information, we do not allocate these severance expenses to our segments.
We have recognized liabilities to reflect our estimates of the fair values of the existing lease obligations for real estate which we have ceased using, net of estimated sublease rentals. Our fair value estimates were determined using discounted cash flow methods. We recognize expense to reflect accretion of the discounted liabilities and periodically we adjust the expense when our actual subleasing experience differs from our initial estimates. We report the current portion of liabilities for ceased-use real estate leases in accrued expenses and other liabilities - other and report the noncurrent portion in deferred credits and other liabilities - other in our consolidated balance sheets. We report the related expenses in selling, general and administrative expenses in our consolidated statements of operations. At March 31, 2017,2018, the current and noncurrent portions of our leased real estate accrual were $8$11 million and $57$51 million,, respectively. The remaining lease terms range from 0.90.16 years to 8.77.7 years, with a weighted-average of 7.66.5 years.
Changes in our accrued liabilities for severance expenses and leased real estate were as follows:
 Severance Real Estate
 (Dollars in millions)
Balance at December 31, 2016$98
 67
Accrued to expense5
 1
Payments, net(74) 
Reversals and adjustments
 (3)
Balance at March 31, 2017$29
 65
 Severance Real Estate
 (Dollars in millions)
Balance at December 31, 2017$33
 64
Accrued to expense45
 2
Payments, net(47) (4)
Balance at March 31, 2018$31
 62
(6)(7)  Employee Benefits
Net periodic benefit (income) expense (income) for our qualified and non-qualified pension plans included the following components:
Pension PlansPension Plans
Three Months Ended March 31,Three Months Ended March 31,
2017 20162018 2017
(Dollars in millions)(Dollars in millions)
Service cost$17
 17
$16
 17
Interest cost101
 107
100
 101
Expected return on plan assets(166) (184)(173) (166)
Recognition of prior service credit(2) (2)(2) (2)
Recognition of actuarial loss51
 42
44
 51
Net periodic pension benefit expense (income)$1
 (20)
Net periodic pension benefit (income) expense$(15) 1

Net periodic benefit expense for our post-retirement benefit plans included the following components:
 Post-Retirement Benefit Plans
 Three Months Ended March 31,
 2017 2016
 (Dollars in millions)
Service cost$4
 5
Interest cost25
 28
Expected return on plan assets
 (2)
Recognition of prior service cost5
 5
Net periodic post-retirement benefit expense$34
 36
We report service cost for our qualified pension, non-qualified pension and post-retirement benefit plans in cost of services and products and selling, general and administrative expenses in our consolidated statements of operations. Additionally, a portion of the service cost is also allocated to certain assets under construction, which when completed are capitalized and reflected as part of property, plant and equipment in our consolidated balance sheets. The remaining components of net periodic benefit (income) expense are reported in other (expense) income, net in our consolidated statements of operations. The expected rate of return on plan assets is the long-term rate of return we expect to earn on the plans' assets, net of administrative expenses paid from plan assets.
 Post-Retirement Benefit Plans
 Three Months Ended March 31,
 2018 2017
 (Dollars in millions)
Service cost$4
 4
Interest cost24
 25
Expected return on plan assets
 
Recognition of prior service cost5
 5
Net periodic post-retirement benefit expense$33
 34
Benefits paid by our qualified pension plan are paid through a trust that holds all plan assets. Based on current laws and circumstances, we do not expect any contributions to be required for our qualified pension plan during the remainder of 2017.2018. However, we currently expect to make a voluntary contribution of $100 million to the trust for our qualified pension plan during the remaining nine months of 2017.2018.

(7)(8)  Earnings Per Common Share
Basic and diluted earnings per common share for the three months ended March 31, 2017 and 2016 were calculated as follows:
Three Months Ended March 31,Three Months Ended March 31,
2017 20162018 2017
(Dollars in millions, except per share amounts, shares in thousands)(Dollars in millions, except per share amounts, shares in thousands)
Income (Numerator):      
Net income$163
 236
$115
 163
Earnings applicable to non-vested restricted stock
 

 
Net income applicable to common stock for computing basic earnings per common share163
 236
115
 163
Net income as adjusted for purposes of computing diluted earnings per common share$163
 236
$115
 163
Shares (Denominator):      
Weighted-average number of shares:      
Outstanding during period547,618
 544,845
1,073,560
 547,618
Non-vested restricted stock(7,160) (6,046)(7,764) (7,160)
Weighted-average shares outstanding for computing basic earnings per common share540,458
 538,799
1,065,796
 540,458
Incremental common shares attributable to dilutive securities:      
Shares issuable under convertible securities10
 10
10
 10
Shares issuable under incentive compensation plans1,054
 1,378
3,377
 1,054
Number of shares as adjusted for purposes of computing diluted earnings per common share541,522
 540,187
1,069,183
 541,522
Basic earnings per common share$0.30
 0.44
$0.11
 0.30
Diluted earnings per common share$0.30
 0.44
$0.11
 0.30
Our calculation of diluted earnings per common share excludes shares of common stock that are issuable upon exercise of stock options when the exercise price is greater than the average market price of our common stock. We also exclude unvested restricted stock awards that are antidilutive as a result of unrecognized compensation cost. Such shares averaged 4.3 million and 3.14.3 million for the three months ended March 31, 2018 and 2017, and 2016, respectively.

(8)(9)  Fair Value Disclosure
Our financial instruments consist of cash and cash equivalents, accounts receivable, accounts payable and long-term debt, excluding capital lease and other obligations. Due to their short-term nature, the carrying amounts of our cash and cash equivalents, accounts receivable and accounts payable approximate their fair values.
Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between independent and knowledgeable parties who are willing and able to transact for an asset or liability at the measurement date. We use valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs when determining fair value and then we rank the estimated values based on the reliability of the inputs used following the fair value hierarchy set forth by the FASB.
We determined the fair values of our long-term debt, including the current portion, based on quoted market prices where available or, if not available, based on discounted future cash flows using current market interest rates.
The three input levels in the hierarchy of fair value measurements are defined by the FASB generally as follows:
Input LevelDescription of Input
Level 1Observable inputs such as quoted market prices in active markets.
Level 2Inputs other than quoted prices in active markets that are either directly or indirectly observable.
Level 3Unobservable inputs in which little or no market data exists.

The following table presents the carrying amounts and estimated fair values of our long-term debt, excluding capital lease and other obligations, as well as the input level used to determine the fair values indicated below:
   As of March 31, 2017 As of December 31, 2016
 
Input
Level
 
Carrying
Amount
 
Fair
Value
 
Carrying
Amount
 
Fair
Value
   (Dollars in millions)
Liabilities—Long-term debt, excluding capital lease and other obligations2 $19,553
 20,095
 19,553
 19,639
   As of March 31, 2018 As of December 31, 2017
 
Input
Level
 
Carrying
Amount
 
Fair
Value
 
Carrying
Amount
 
Fair
Value
   (Dollars in millions)
Liabilities—Long-term debt, excluding capital lease and other obligations2 $36,509
 35,677
 36,835
 36,402
(9)(10)  Segment Information
Segment Data
Effective January 11,In connection with our acquisition of Level 3 (discussed further in Note 2—Acquisition of Level 3), effective November 1, 2017, we implemented a new organizationalorganization structure designed to further strengthenand began managing our ability to attain our operational, strategic and financial goals. Prior to this reorganization, we operated and reported asoperations in two segments,segments: business and consumer. As a result ofOur consumer segment remains substantially unchanged under this reorganization, we changed the name of the predecessorand our newly reorganized business segment to "enterprise" segment. We now reportincludes the following two segments:
Enterprise Segment. Consists generally of providing strategic, legacyLegacy CenturyLink enterprise segment operations and data integration products and services to small, medium and enterprise business, wholesale and governmental customers, including other communication providers. Our strategic products and services offered to these customers include our MPLS, Ethernet, colocation, broadband, VoIP and other ancillary services. Our legacy services offered to these customers primarily include local and long-distance voice, including the sale of unbundled network elements ("UNEs"), which allow our wholesale customers to use all or part of our network to provide voice and data services to their customers, private line (including special access), switched access and other ancillary services. Our data integration offerings include the sale of telecommunications equipment located on customers' premises and related products and professional services, all of which are described further below under the heading "Product and Service Categories"; and
Consumer Segment. Consists generally of providing strategic and legacy products and services to residential customers. Our strategic products and services offered to these customers include our broadband, video (including our Prism TV services) and other ancillary services. Our legacy services offered to these customers include local and long-distance voice and other ancillary services.
Legacy Level 3 operations. In connection with our January 2017 reorganization,addition, we also reassigned our information technology, managed hosting, cloud hosting and hosting area network services from our formeroperations back into the business segment to a newfrom the former non-reportable operating segment. At March 31, 2018, we had the following two reportable segments:
Business Segment. This segment consists generally of providing products and services to small, medium and enterprise business, wholesale and government customers, including other communication providers. Our products and services offered to these customers include our local and long-distance voice, VPN data network, private line (including business data services), Ethernet, information technology, wavelength, broadband, colocation and data center services, managed services, professional and other services provided in connection with selling equipment, network security and various other ancillary services, all of which are described further under "Products and Services Categories"; and
Consumer Segment. This segment consists generally of providing products and services to residential customers. Our products and services offered to these customers include our broadband, local and long-distance voice, video and other ancillary services.

The results of our enterprisetwo reportable segments, business and consumer, segments are summarized below:
 Three Months Ended March 31,
 2017
2016
 (Dollars in millions)
Total segment revenues$3,768
 3,931
Total segment expenses1,930
 1,930
Total segment income$1,838
 2,001
Total margin percentage49% 51%
    
Enterprise segment:   
Revenues$2,356
 2,442
Expenses1,321
 1,319
Income$1,035
 1,123
Margin percentage44% 46%
Consumer segment:   
Revenues$1,412
 1,489
Expenses609
 611
Income$803
 878
Margin percentage57% 59%
Additional Changes in Segment Reporting
As a part of the implementation of the new organizational structure described in "Segment Data" above, we made several changes with respect to the assignment of certain expenses to our reportable segments, most notably the reassignment of certain marketing and advertising expenses from the consumer segment to the enterprise segment. We have recast our previously-reported segment results for the three months ended March 31, 2016, to conform to the current presentation.
 Three Months Ended March 31,
 2018
2017
 (Dollars in millions)
Total reportable segment revenues$5,762
 4,037
Total reportable segment expenses3,226
 2,206
Total reportable segment adjusted EBITDA$2,536
 1,831
Total margin percentage44% 45%
    
Business segment:   
Revenues$4,383
 2,590
Expenses2,613
 1,566
Adjusted EBITDA$1,770
 1,024
Margin percentage40% 40%
Consumer segment:   
Revenues$1,379
 1,447
Expenses613
 640
Adjusted EBITDA$766
 807
Margin percentage56% 56%
Product and Service Categories
From time to time, we change the categorization of our products and services, and we may make similar changes in the future. During the second quarter of 2016, we determined that because of declines due to customer migration to other strategic products and services, certain of our enterprise low-bandwidth data services, specifically our private line (including special access) services in our enterprise segment, are more closely aligned with our legacy services than with our strategic services. As a result, we reflect these operating revenues as legacy services, and we have reclassified certain prior period amounts to conform to this change. The revision resulted in a reduction of revenue from strategic services and a corresponding increase in revenue from legacy services of $365 million (net of $1 million of deferred revenue included in other enterprise legacy services) for the three months ended March 31, 2016. In addition, our enterprise broadband services remain a strategic service and are included in our other enterprise strategic services.
We categorize our products, services and revenues among the following fourfive categories:
StrategicIP and data services, which include primarily broadband, MPLS,VPN data networks, Ethernet, colocation, hosting (including cloud hosting and managed hosting),IP, video (including our facilities-based video services which we offer in 16 markets), VoIP, information technologyand Vyvx broadcast services) and other ancillary services;
Legacy servicesTransport and infrastructure, which include broadband, private line (including business data services), data center facilities and services, including cloud, hosting and application management solutions, wavelength, equipment sales and professional services, network security services and other ancillary services;
Voice and collaboration, which includes primarily local and long-distance voice, including the sale of UNEs, private line (including special access), Integrated Services Digital Network ("ISDN") (which use regular telephone lines to supportwholesale voice, video and data applications), switched access and other ancillary services;service;
Data integrationIT and managed services, which includes the sale of telecommunications equipment located on customers' premisesinclude information technology services and related products and professionalmanaged services, such aswhich may be purchased in conjunction with our other network management, installation and maintenance of data equipment and building of proprietary fiber-optic broadband networks for our governmental and business customers;services; and

Other operatingRegulatory revenues, which consist primarilyconsists of Universal Service Fund ("USF") and Connect America Fund ("CAF") support payments Universal Service Fund ("USF") support payments and USF surcharges.other operating revenues. We receive federal support payments from both Phase 1 and Phase 2 of the CAF program, and support payments from both federal and state USF programs. Theseprograms and from the federal CAF program. The USF and CAF support payments are government subsidies designed to reimburse us for various costs related to certain telecommunications services, including the costs of deploying, maintaining and operating voice and broadband infrastructure in high-cost rural areas where we are not able to fully recover our costs from our customers.services. We also collect USF surcharges based on specific items we list on our customers' invoices to fund the FCC's universal service programs. We also generate other operating revenues from the leasing and subleasing of space in our office buildings, warehouses and other properties.properties and from rental income associated with the failed-sale-leaseback. Because we centrally manage the activities that generate these other operatingregulatory revenues, these revenues are not included in our segment revenues.

Our operating revenue detail for our products and services consisted of the following categories:
 Three Months Ended March 31,
 2018 2017
 (Dollars in millions)
Business segment   
IP & Data Services (1)$1,748
 744
Transport & Infrastructure (2)1,362
 906
Voice & Collaboration (3)1,111
 788
IT & Managed Services (4)162
 152
Total business segment revenues4,383
 2,590
    
Consumer segment   
IP & Data Services (5)97
 120
Transport & Infrastructure (6)756
 701
Voice & Collaboration (3)526
 626
Total consumer segment revenues1,379
 1,447
    
Non-segment revenues   
Regulatory revenues (7)183
 172
Total non-segment revenues183
 172
    
Total revenues$5,945
 4,209
 Three Months Ended March 31,
 2017 2016
 (Dollars in millions)
Strategic services   
Enterprise high-bandwidth data services (1)$769
 738
Other enterprise strategic services (2)315
 315
IT and managed services (3)152
 162
Consumer broadband services (4)661
 667
Other consumer strategic services (5)103
 107
Total strategic services revenues2,000
 1,989
    
Legacy services   
Enterprise voice services (6)573
 622
Enterprise low-bandwidth data services (7)314
 365
Other enterprise legacy services (8)268
 287
Consumer voice services (6)575
 634
Other consumer legacy services (9)73
 80
Total legacy services revenues1,803
 1,988
    
Data integration   
  Enterprise data integration117
 115
  IT and managed services data integration1
 
  Consumer data integration
 1
Total data integration revenues118
 116
    
Other revenues   
  High-cost support revenue (10)168
 174
  Other revenue (11)120
 134
Total other revenues288
 308
    
Total revenues$4,209
 4,401
______________________________________________________________________ 
(1)Includes MPLSprimarily VPN data network, Ethernet, IP, video and Ethernet revenueancillary revenues.
(2)Includes primarily broadband, private line (including business data services), colocation broadband, VOIP and video revenuedata centers, wavelength and ancillary revenues.
(3)Includes primarily IT services, managed hosting, cloud hostinglocal, long-distance and hosting area network revenueother ancillary revenues.
(4)Includes broadbandIT services and relatedmanaged services revenuerevenues.
(5)Includes retail video and other revenuerevenues (including our facilities-based video revenues).
(6)Includes localprimarily broadband and long-distance voice revenueequipment sales and professional services revenues.
(7)Includes private line (including special access) revenue
(8)Includes UNEs, public access, switched access and other ancillary revenue
(9)Includes other ancillary revenue
(10)Includes CAF Phase 1,I, CAF Phase 2, and federal and state USF support revenue,
(11)Includes USF surcharges sublease rental income and failed-sale leaseback income.

We recognize revenues in our consolidated statements of operations for certain USF surcharges and transaction taxes that we bill to our customers. Our consolidated statements of operations also reflect the offsetting expense for the amounts we remit to the government agencies. The total amount of such surcharges and transaction taxes that we included in revenues aggregated $130$246 million and $146$130 million for the three months ended March 31, 20172018 and 2016,2017, respectively. These USF surcharges, where we record revenue, are included in "other" operating revenues and these transaction taxes are included in "legacy services"assigned to the products and services categories of each segments based on the underlying revenues. We also act as a collection agent for certain other USF and transaction taxes that we are required by government agencies to bill our customers, for which we do not record any revenue or expense because we only act as a pass-through agent.

Allocations of Revenues and Expenses
Our segment revenues include all revenues from our strategic, legacybusiness and data integration operationsconsumer segments as described in more detail above. Our segment revenues for our two reportable segments are based upon each customer's classification as either enterprise or consumer.classification. We report our segment revenues based upon all services provided to that segment's customers. Our segment expenses for our two reportable segments include specific expenses incurred as a direct result of providing services and products to segment customers, along with selling, general and administrative expenses that are (i) directly associated with specific segment customers or activities and (ii) allocated expenses, which include network expenses, facilities expenses and other expenses such as fleet and real estate expenses. We do not assign depreciation and amortization expense or impairments to our segments, as the related assets and capital expenditures are centrally managed and are not monitored by or reported to the chief operating decision maker ("CODM") by segment. Generally speaking, severance expenses, restructuring expenses and certain centrally managed administrative functions (such as finance, information technology, legal and human resources) are not assigned to our segments. Interest expense is also excluded from segment results because we manage our financing on a consolidated basis and have not allocated assets or debt to specific segments. Other income and expense items are not monitored as a part of our segment operations and are therefore excluded from our segment results.
The following table reconciles total reportable segment incomeadjusted EBITDA to net income:
Three Months Ended March 31,Three Months Ended March 31,
2017 20162018 2017
(Dollars in millions)(Dollars in millions)
Total reportable segment income$1,838
 2,001
Non-reportable segment revenues153
 162
Other operating revenues288
 308
Total reportable segment adjusted EBITDA$2,536
 1,831
Regulatory revenues183
 172
Depreciation and amortization(880) (976)(1,283) (880)
Other operating expenses(768) (807)(686) (492)
Interest expense and other (expense) income, net(324) (308)
Total other expense, net(514) (324)
Income before income tax expense307
 380
236
 307
Income tax expense(144) (144)(121) (144)
Net income$163
 236
$115
 163
We do not have any single customer that provides more than 10% of our total consolidated operating revenues. Substantially all of our consolidated revenues come from customers located in the United States.

(10)(11) Commitments and Contingencies
We are vigorously defending against all ofcurrently a party to various claims and legal proceedings, including the matters described below under the headings "Pending Matters" and "Other Proceedings and Disputes."below. As a matter of course, we are prepared to both to litigate these matters to judgment as needed, as well as to evaluate and consider all reasonable settlement opportunities. In this Note, when we refer to a class action as "putative" it is because a class has been alleged, but not certified in that matter. We have established accrued liabilities for these matters described below where losses are deemed probable and reasonably estimable.
PendingMattersShareholder Class Action Suit
CenturyLink and thecertain members of the CenturyLink Board of Directors have been named as defendants in a putative shareholder class action lawsuit filed on January 11, 2017 in the 4th Judicial District Court of the State of Louisiana, Ouachita Parish, captioned Jeffery Tomasulo v. CenturyLink, Inc., et al., Docket No. C-20170110. The complaint asserts, among other things, that the members of CenturyLink’s Board allegedly breached their fiduciary duties to the CenturyLink shareholders in approving the Level 3 merger agreement and, more particularly, that: the consideration that CenturyLink agreed to pay to Level 3 stockholders in the transaction is allegedly unfairly high; the CenturyLink directors allegedly had conflicts of interest in negotiating and approving the transaction; and the disclosures set forth in our preliminary joint proxy statement/prospectus filed in December 2016 are insufficient in that they allegedly fail to contain material information concerning the transaction. The complaint seeks, among other things, a declaration that the members of the CenturyLink Board have breached their fiduciary duties, corrective disclosure, rescissory or other damages and equitable relief, including rescission of the transaction. On February 13, 2017, the parties entered into a memorandum of understanding providing for the settlement of the lawsuit. The proposed settlement is subject to court approval, among other conditions, and the amount of the settlement is not material to our consolidated financial statements.
In William Douglas Fulghum, et al. v. Embarq Corporation, et al., filed on December 28, 2007 in the United States District Court for the District of Kansas, a group of retirees filed a class action lawsuit challenging the decision to make certain modifications in retiree benefits programs relating to life insurance, medical insurance and prescription drug benefits, generally effective January 1, 2006 and January 1, 2008 (which, at the time of the modifications, was expected to reduce estimated future expenses for the subject benefits by more than $300 million). Defendants include Embarq, certain of its benefit plans, its Employee Benefits Committee and the individual plan administrator of certain of its benefits plans. Additional defendants include Sprint Nextel and certain of its benefit plans. The court certified classes on the claims for vested benefits and age discrimination, but rejected class certification on the claims for breach of fiduciary duty. On October 14, 2011, the Fulghum lawyers filed a new, related lawsuit, Abbott et al. v. Sprint Nextel et al. In Abbott, approximately 1,500 plaintiffs alleged breach of fiduciary duty in connection with the changes in retiree benefits that were at issue in Fulghum. After extensive district court proceedings in Fulghum, and an interlocutory appeal to the United States Court of Appeals for the Tenth Circuit, defendants prevailed in 2015 on all age discrimination claims and on the majority of claims for vested benefits. The district court in Fulghum subsequently granted judgment in favor of defendants on all remaining vested benefits claims, and in July 2016 ordered that any affected class members could appeal this ruling. No appeal was taken, and all claims for vested benefits thus have lapsed. On August 31, 2016, the parties reached a settlement in principle on all remaining claims in Fulghum and Abbott. Since then, a settlement agreement has been finalized and, per its terms, the vast majority of the settlement funds were paid out to the claims administrator in March 2017, with the remainder to be paid out in the next few months. The amount of the settlement is not material to our consolidated financial statements.
Switched Access Disputes
Subsidiaries of CenturyLink, Inc. are among hundreds of companies involved in an industry-wide dispute, raised in nearly 100 federal lawsuits (filed between 2014 and 2016) that have been consolidated as In Re: IntraMTA Switched Access Charges Litigation, in the United States District Court for the Northern District of Northern Texas for pretrial procedures. The disputes relate to switched access charges that local exchange carriers ("LECs") collect from interexchange carriers ("IXCs") for IXCs' use of LEC's access services. In the lawsuits, threevarious IXCs Sprint Communications Company L.P. ("Sprint"), affiliates of Verizon Communications Inc. ("Verizon") and affiliates of Level 3 Communications LLC ("Level 3"), assert that federal and state laws bar LECs are prohibited from collecting access charges when IXCs exchange certain types of calls between mobile and wireline devices that are routed through an IXC.devices. Some of these IXCs have asserted claims seekingseek refunds of payments for access charges previously paid and declaratory relief from future access charges. In addition, Level 3 has ceased paying switched access charges on these calls.
In November 2015, the federal court agreed with the LECs and rejected some of the IXCs' contention that federal law prohibits these particular access charges,claims, and also allowed the IXCs to refile state-law claims. The Verizon entities did not file any new state claims, while SprintMany of the parties filed state claims substantially similar to those previously dismissed. Based on the November 2015 ruling, we filed suit against Level 3 seeking payment of chargesrevised pleadings and additional motions, which Level 3 has disputed and withheld.remain pending. Separately, some of the defendants including us, have petitioned the FCC to address these issues on an industry-wide basis.

As both an IXC and a LEC, we both pay and assess significant amounts of the charges in question. The outcome of these disputes and lawsuits, as well as any related regulatory proceedings that could ensue, could affect our financial results and are currently not predictable. If we are required to stop assessing these charges or to pay refunds
State Tax Suits
Several Missouri municipalities have, beginning in May 2012, asserted claims alleging underpayment of any such charges, our financial results could be negatively affected.
taxes against CenturyLink, Inc. and several of its subsidiaries are defendants in lawsuitsa number of proceedings filed over the past few years in the Circuit Court of St. Louis County, Missouri by numerous Missouri municipalities alleging underpayment of taxes.Missouri. These municipalities are seeking, among other things, (i) a declaratory judgmentrelief regarding the extentapplication of our obligations to pay certain business license and gross receipts taxes and (ii) a monetary award of back taxes coveringfrom 2007 to the present, plus penalties and interest. In a February 2017 ruling in connection with one of these pending cases, the court entered into a finalan order awarding plaintiffs $4 million and broadening the tax base on a going forwardgoing-forward basis. We have appealed that ruling. In a June 2017 ruling in connection with another one of these pending cases, the court made findings which, if not overturned, will result in a tax liability to us well in excess of the contingent liability we have established. In due course, we plan to appeal that decision. We continue to vigorously defend against these claims.
Billing Practices Suits
In June 2017, a former employee filed an employment lawsuit against us claiming that she was wrongfully terminated for alleging that we charged some of our retail customers for products and services they did not authorize. Starting shortly thereafter and continuing since then, and based in part on the allegations made by the former employee, several legal proceedings have been filed.
In June 2017, McLeod v. CenturyLink, a noticeputative consumer class action, was filed against us in the U.S. District Court for the Central District of California alleging that we charged some of our retail customers for products and services they did not authorize. A number of other complaints asserting similar claims have been filed in other federal courts, as well. The lawsuits assert claims including fraud, unfair competition, and unjust enrichment. Also in June 2017, Craig. v. CenturyLink, Inc., et al., a putative securities investor class action, was filed in U.S. District Court for the Southern District of New York, alleging that we failed to disclose material information regarding improper sales practices, and asserting federal securities law claims. A number of other cases asserting similar claims have also been filed. Both the putative consumer class actions and the putative securities investor class actions have been transferred to the U.S. District Court for the District of Minnesota for coordinated and consolidated pretrial proceedings as In Re: CenturyLink Sales Practices and Securities Litigation.
In June 2017, we also received several shareholder derivative demands addressing related topics. In August 2017, the Board of Directors formed a special litigation committee of outside directors to address the allegations of impropriety contained in the shareholder derivative demands. In April 2018, the special litigation committee concluded its review of the derivative demands and declined to take further action. Despite the special litigation committee’s decision, it is possible that one or more of the shareholders that submitted the demands could attempt to file derivative lawsuits.
In July 2017, the Minnesota state attorney general filed State of Minnesota v. CenturyTel Broadband Services LLC, et al. in the Asoka County Minnesota District Court, alleging claims of fraud and deceptive trade practices relating to improper consumer sales practices. The suit seeks an order of restitution on behalf of all CenturyLink customers, civil penalties, injunctive relief, and costs and fees. Additionally, we have received and responded to information requests and inquiries from other states.

Pending Litigation Matters Assumed in Level 3 Acquisition
Peruvian Tax Litigation
In 2005, the Peruvian tax authorities ("SUNAT") issued tax assessments against one of our Peruvian subsidiaries asserting $26 million, of additional income tax withholding and value-added taxes ("VAT"), penalties and interest for calendar years 2001 and 2002 on the basis that the Peruvian subsidiary incorrectly documented its importations. After taking into account the developments described below, as well as the accrued interest and foreign exchange effects, the total amount of exposure is $15 million at March 31, 2018.
We challenged the assessments via administrative and then judicial review processes. In October 2011, the highest administrative review tribunal (the Tribunal) decided the central issue underlying the 2002 assessments in SUNAT's favor. We appealed the Tribunal's decision to the first judicial level, which decided the central issue in favor of Level 3. SUNAT and we filed cross-appeals with the court of appeal. In May 2017, the court of appeal issued a decision reversing the first judicial level. In June 2017, we filed an appeal of the decision to the Supreme Court of Justice, the final judicial level. That appeal is pending.
In October 2013, the Tribunal decided the central issue underlying the 2001 assessments in SUNAT’s favor. We appealed that decision to the first judicial level in Peru, which decided the central issue in favor of SUNAT. In June 2017, we filed an appeal with the court of appeal. In November 2017, the court of appeals issued a decision affirming the first judicial level and we filed an appeal of the decision to the Supreme Court of Justice. That appeal is pending.
Employee Severance and Contractor Termination Disputes
A number of former employees and third-party contractors have asserted a variety of claims in litigation against certain of Level 3’s Latin American subsidiaries for separation pay, severance, commissions, pension benefits, unpaid vacation pay, breach of employment contracts, unpaid performance bonuses, property damages, moral damages and related statutory penalties, fines, costs and expenses (including accrued interest, attorneys' fees and statutorily mandated inflation adjustments) as a result of their separation from Level 3 or termination of service relationships. Level 3 is vigorously defending itself against the asserted claims, which aggregate to approximately $32 million at March 31, 2018.
Brazilian Tax Claims
In December 2004, March 2009, April 2009 and July 2014, the São Paulo state tax authorities issued tax assessments against one of our Brazilian subsidiaries for the Tax on Distribution of Goods and Services (“ICMS”) with respect to revenue from leasing certain assets (in the case of the December 2004, March 2009 and July 2014 assessments) and revenue from the provision of Internet access services (in the case of the April 2009 and July 2014 assessments), by treating such activities as the provision of communications services, to which the ICMS tax applies. In September 2002, July 2009 and May 2012, the Rio de Janeiro state tax authorities issued tax assessments to the same Brazilian subsidiary on similar issues.
We have filed objections to these assessments, arguing that the lease of assets and the provision of Internet access are not communication services subject to ICMS. The objections to the September 2002, December 2004 and March 2009 assessments were rejected by the respective state administrative courts, and we have appealed those decisions to the judicial courts. In October 2012 and June 2014, we received favorable rulings from the lower court on the December 2004 and March 2009 assessments regarding equipment leasing, but those rulings are subject to appeal by the state. No ruling has been obtained with respect to the September 2002 assessment. The objections to the April and July 2009 and May 2012 assessments are still pending final administrative decisions. The July 2014 assessment was confirmed during the fourth quarter of 2014 at the first administrative level, and we appealed this decision to the second administrative level. We are vigorously contesting all such assessments in both states and, in particular, view the assessment of ICMS on revenue from equipment leasing to be without merit. These assessments, if upheld, could result in a loss of up to $54 million at March 31, 2018 in excess of the accruals established for these matters.
We are vigorously contesting all such assessments in both states and, in particular, view the assessment of ICMS on revenue from leasing movable properties to be without merit.
Other Level 3 2017.We expectMatters
Level 3 was notified in late 2017 of a qui tam action pending against Level 3 Communications, Inc., certain former employees and others in the United States District Court for the Eastern District of Virginia, captioned United States of America ex rel., Stephen Bishop v. Level 3 Communications, Inc. et al. The original qui tam complaint was filed under seal on November 26, 2013, and an amended complaint was filed under seal on June 16, 2014. The court unsealed the complaints on October 26, 2017.

The amended complaint alleges that Level 3, principally through two former employees, submitted false claims and made false statements to the government in connection with two government contracts. The relator seeks damages in this lawsuit of approximately $50 million, subject to trebling, plus statutory penalties, pre-and-post judgment interest, and attorney’s fees. The case is currently stayed.
Level 3 is evaluating its defenses to the claims. At this time, Level 3 does not believe it is probable Level 3 will incur a material loss. If, contrary to its expectations, the plaintiff prevails in this matter and proves damages at or near $50 million, and is successful in having those damages trebled, the outcome could have a material adverse effect on our results of operations in the period in which a liability is recognized and on our appealcash flows for the period in which any damages are paid.
The two former Level 3 employees named in the qui tam amended complaint and others were also indicted in the United States District Court for the Eastern District of Virginia on October 3, 2017, and charged with, among other things, accepting kickbacks from a subcontractor, who was also indicted, for work to reduce our ultimate exposure, although we can provide no assurances tobe performed under a prime government contract. Level 3 is fully cooperating in the government’s investigations in this effect.matter.
Other Proceedings, Disputes and DisputesContingencies
From time to time, we are involved in other proceedings incidental to our business, including patent infringement allegations, administrative hearings of state public utility commissions relating primarily to our rates or services, actions relating to employee claims, various tax issues, environmental law issues, grievance hearings before labor regulatory agencies and miscellaneous third party tort actions.
We are currently defending several patent infringement lawsuits asserted against us by non-practicing entities, many of which are seeking substantial recoveries. These cases have progressed to various stages and one or more may go to trial in the coming 24 months if they are not otherwise resolved. Where applicable, we are seeking full or partial indemnification from our vendors and suppliers. As with all litigation, we are vigorously defending these actions and, as a matter of course, are prepared to litigate these matters to judgment, as well as to evaluate and consider all reasonable settlement opportunities.
We are subject to various foreign, federal, state and local environmental protection and health and safety laws. From time to time, we are subject to judicial and administrative proceedings brought by various governmental authorities under these laws. Several such proceedings are currently pending, but none is reasonably expected to exceed $100,000 in fines and penalties.
The outcome of these other proceedings is not predictable. However, based on current circumstances, we do not believe that the ultimate resolution of these other proceedings, after considering available defenses and any insurance coverage or indemnification rights, will have a material adverse effect on our financial position, results of operations or cash flows.
The matters listed above in this Note do not reflect all of our contingencies. For additional information on our contingencies , See Note 16 to the financial statements included in Item 8 of Part II of our annual report on Form 10-K for the year ended December 31, 2017.
_____________

The ultimate outcome of the above-described matters may differ materially from the outcomes anticipated, estimated, projected or implied by us in certain of our forward-looking statements appearing above in this Note, and proceedings currently viewed as immaterial by us may ultimately materially impact us. For more information, see “Risk Factors—Risks Relating to Legal and Regulatory Matters—Our pending legal proceedings could have a material adverse impact on our financial condition and operating results, on the trading price of our securities and on our ability to access the capital markets” in Item 1A of Part I of our annual report on Form 10-K for the year ended December 31, 2017.

(11)(12)  Other Financial Information
Other Current Assets
The following table presents details of other current assets in our consolidated balance sheets:
As of
March 31, 2017
 As of
December 31, 2016
As of
March 31, 2018
 As of
December 31, 2017
(Dollars in millions)(Dollars in millions)
Prepaid expenses$272
 206
$353
 294
Income tax receivable256
 258
Materials, supplies and inventory138
 134
111
 128
Deferred activation and installation charges105
 101
157
 128
Deferred commissions134
 
Other42
 106
94
 133
Total other current assets$557
 547
$1,105
 941
Selected Current Liabilities
Current liabilities reflected in our consolidated balance sheets include accounts payable and other current liabilities as follows:
As of
March 31, 2017
 As of
December 31, 2016
As of
March 31, 2018
 As of
December 31, 2017
(Dollars in millions)(Dollars in millions)
Accounts payable$994
 1,179
Other current liabilities:      
Accrued rent$28
 31
$28
 34
Legal contingencies25
 30
46
 45
Other124
 152
354
 265
Total other current liabilities$177
 213
$428
 344
Included in accounts payable at March 31, 20172018 and December 31, 2016,2017, were (i) $41$24 million and $56$36 million, respectively, representing book overdrafts and (ii) $93$186 million and $196$225 million, respectively, associated with capital expenditures.
(12)(13)  Accumulated Other Comprehensive Loss
Information Relating to 2018
The tables below summarize changes in accumulated other comprehensive loss recorded on our consolidated balance sheets by component for the three months ended March 31, 2018:
 Pension Plans Post-Retirement
Benefit Plans
 Foreign Currency
Translation
Adjustment
and Other
 Total
 (Dollars in millions)
Balance at December 31, 2017$(1,731) (235) (29) (1,995)
Other comprehensive income before reclassifications
 
 79
 79
Amounts reclassified from accumulated other comprehensive income31
 4
 
 35
Net current-period other comprehensive income31
 4
 79
 114
Cumulative effect of adoption of ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income
(375) (32) 
 (407)
Balance at March 31, 2018$(2,075) (263) 50
 (2,288)

The tables below present further information about our reclassifications out of accumulated other comprehensive loss by component for the three months ended March 31, 2018:
Three Months Ended March 31, 2018 Decrease (Increase)
in Net Income
 Affected Line Item in Consolidated Statement of
Operations
  (Dollars in millions)  
Amortization of pension & post-retirement plans(1)
    
Net actuarial loss $44
 Other income (expense), net
Prior service cost 3
 Other income (expense), net
Total before tax 47
  
Income tax benefit (12) Income tax expense
Net of tax $35
  

(1)
See Note 7—Employee Benefits for additional information on our net periodic benefit (expense) income related to our pension and post-retirement plans.
Information Relating to 2017
The tables below summarize changes in accumulated other comprehensive loss recorded on our consolidated balance sheets by component for the three months ended March 31, 2017:
 Pension Plans Post-Retirement
Benefit Plans
 Foreign Currency
Translation
Adjustment
and Other
 Total
 (Dollars in millions)
Balance at December 31, 2016$(1,895) (162) (60) (2,117)
Other comprehensive income (loss) before reclassifications
 
 (2) (2)
Amounts reclassified from accumulated other comprehensive income30
 3
 
 33
Net current-period other comprehensive income30
 3
 (2) 31
Balance at March 31, 2017$(1,865) (159) (62) (2,086)
The tabletables below presentspresent further information about our reclassifications out of accumulated other comprehensive loss by component for the three months ended March 31, 2017:
Three Months Ended March 31, 2017 Decrease (Increase)
in Net Income
 Affected Line Item in Consolidated Statement of
Operations
  (Dollars in millions)  
Amortization of pension & post-retirement plans(1)
    
Net actuarial loss $51
 Other (expense) income, net
Prior service cost 3
 Other (expense) income, net
Total before tax 54
  
Income tax benefit (21) Income tax expense
Net of tax $33
  

Three Months Ended March 31, 2017 Decrease (Increase)
in Net Income
 Affected Line Item in Consolidated Statement of
Operations
  (Dollars in millions)  
Amortization of pension & post-retirement plans(1)
    
Net actuarial loss $51
 Other income (expense), net
Prior service cost 3
 Other income (expense), net
Total before tax 54
  
Income tax benefit (21) Income tax expense
Net of tax $33
  
(1) 
See Note 6—Employee Benefits for additional information on our net periodic benefit (expense) income related to our pension and post-retirement plans.

The tables below summarize changes in accumulated other comprehensive loss recorded on our consolidated balance sheets by component for the three months ended March 31, 2016:
 Pension Plans Post-Retirement
Benefit Plans
 Foreign Currency
Translation
Adjustment
and Other
 Total
 (Dollars in millions)
Balance at December 31, 2015$(1,715) (180) (39) (1,934)
Other comprehensive income (loss) before reclassifications
 
 (1) (1)
Amounts reclassified from accumulated other comprehensive income25
 3
 
 28
Net current-period other comprehensive income25
 3
 (1) 27
Balance at March 31, 2016$(1,690) (177) (40) (1,907)
The table below presents further information about our reclassifications out of accumulated other comprehensive loss by component for the three months ended March 31, 2016:
Three Months Ended March 31, 2016 Decrease (Increase)
in Net Income
 Affected Line Item in Consolidated Statement of
Operations
  (Dollars in millions)  
Amortization of pension & post-retirement plans(1)
    
Net actuarial loss $42
 Other (expense) income, net
Prior service cost 3
 Other (expense) income, net
Total before tax 45
  
Income tax benefit (17) Income tax expense
Net of tax $28
  

(1)
See Note 6—7—Employee Benefits for additional information on our net periodic benefit (expense) income related to our pension and post-retirement plans.
(13)(14)  Labor Union Contracts
ApproximatelyAs of March 31, 2018, approximately 37%26% of our employees arewere members of various bargaining units represented by the Communication Workers of America ("CWA") and the International Brotherhood of Electrical Workers. Approximately 12,000, or 30%,Workers ("IBEW"). We believe that relations with our employees continue to be generally good. Less than 1,000 of our employees arewere subject to collective bargaining agreements that have expired as of March 31, 2018, and are scheduled to expire during the remainder of 2017, including approximately 10,000, or 25%, of our employees that are subject to collective bargaining agreements that are scheduled to expire October 7, 2017.being renegotiated.

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
Unless the context requires otherwise, (i) references in this report to "CenturyLink," "we," "us" and "our" refer to CenturyLink, Inc. and its consolidated subsidiaries.subsidiaries and (ii) references in this report to "Level 3" refer to Level 3 Communications, Inc. prior to our acquisition thereof and to its successor-in-interest Level 3 Parent, LLC after such acquisition.
All references to "Notes" in this Item 2 of Part I refer to the Notes to Consolidated Financial Statements included in Item 1 of Part I of this report.
Certain statements in this report constitute forward-looking statements. See "Special Note Regarding Forward-Looking Statements" appearing at the last paragraphbeginning of this Item 2 of Part Ireport and "Risk Factors" in Item 1A of Part III of thisour annual report on Form 10-K for the year endedDecember 31, 2017 for a discussion of certain factors that could cause our actual results to differ from our anticipated results or otherwise impact our business, financial condition, results of operations, liquidity or prospects.
Overview
Management's Discussion and Analysis of Financial Condition and Results of Operations ("MD&A") included herein should be read in conjunction with MD&A and the other information included in our annual report on Form 10-K for the year ended December 31, 20162017, and with the consolidated financial statements and related notes in Item 1 of Part I of this report. The results of operations and cash flows for the first three months of the year are not necessarily indicative of the results of operations and cash flows that might be expected for the entire year.
We are an integratedinternational facilities-based communications company engaged primarily in providing an integrated array of services to our residential and business customers. Our communications services include local and long-distance voice, broadband, Multi-Protocol Label Switchingvirtual private network ("MPLS"VPN"), data network, private line (including special access)business data services), Ethernet, colocation, hosting (including cloud hosting and managed hosting), data integration, video, network, public access, Voice over Internet Protocol ("VoIP"), information technology, wavelength, broadband, colocation and data center services, managed services, professional and other services provided in connection with selling equipment, network security and various other ancillary services. We strive to maintain our customer relationships by, among other things, bundling our service offerings to provide our customers with a complete offering of integrated communications services.
At March 31, 2017,2018, we operated 10.9served 5.0 million access lines in 37 states and served 5.9 millionconsumer broadband subscribers. Our methodology for counting access lines andconsumer broadband subscribers, which is described further in the operational metrics table below under "Results of Operations", may not be comparable to those of other companies. We no longer report or discuss access lines as a key operating metric given the significant migration in our industry from legacy services to IP-enabled services.
Pending Acquisition of Level 3
On October 31, 2016, we entered into a definitive merger agreement under which we propose to acquireNovember 1, 2017, CenturyLink, Inc. ("CenturyLink") acquired Level 3 Communications, Inc. (“Level 3”) inthrough successive merger transactions, including a cash and stock transaction. Under the terms of the agreement, Level 3 shareholders will receive $26.50 per share in cash and 1.4286 of CenturyLink shares for each sharemerger of Level 3 common stock they own at closing. CenturyLink shareholders are expected to own approximately 51%with and into a merger subsidiary, which survived such merger as our indirect wholly-owned subsidiary under the name of Level 3 shareholders are expected to own approximately 49% of the combined company at closing. On December 31, 2016, Level 3 had outstanding $10.9 billion of long-term debt.
The merger agreement was approved by CenturyLink and Level 3 shareholders at special meetings held on March 16, 2017. Completion of the transaction is subject to (i) the receipt of regulatory approvals, including the expiration or termination of the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act, (ii) approvals from the Federal Communications Commission ("FCC") and certain state regulatory authorities and (iii) other customary closing conditions. Subject to these conditions, we anticipate closingParent, LLC. We entered into this transaction, by the end of the third quarter 2017.among other things, to realize certain strategic benefits, including enhanced financial and operational scale, market diversification and leveraged combined networks.
During the first quarter of 2017,three months ended March 31, 2018, we recognized $10incurred $70 million of acquisition and integrationintegration-related expenses associated with our activities related to the pending Level 3 acquisition. We have not yet recognized various other expenses that are contingent on completion of the acquisition. These expenses include financial advisoryalso incurred $1 million in merger-related transaction costs, including investment banker and legal fees and compensation expense comprised of severance and stock-based compensation for stock-based awards that will vest in connection with consummating the acquisition. Most of these contingent expenses will be recognized in ourtransaction.
Our consolidated financial statements ininclude the period in whichaccounts of CenturyLink and its majority owned subsidiaries, including Level 3 beginning on November 1, 2017. Due to the significant size of the acquisition, occurs, withdirect comparison of our results of operations for the remainder recognized thereafter. Compensation expense relatedperiods ending on or after December 31, 2017 to retention bonusesprior periods are accrued from the date of the offer through the date they are paid. The final amount of compensation expense to be recognized is partially dependent upon personnel decisions that will be made as part of integration planning. These amounts may be material.less meaningful than usual.

Upon completionAs a result of the acquisition, Level 3's assets and liabilities will behave been revalued and recorded at their preliminary estimated fair value. The assignment of estimated fair value will requirerequires a significant amount of judgment. The use of fair value measures will affectaffects the comparability of our post-acquisition financial information and may make it more difficult to predict earnings in future periods. For example,We expect to complete our final fair value determinations prior to the first anniversary of the acquisition. Our final fair value determinations may be significantly different than those preliminary values reflected in our consolidated financial statements at March 31, 2018.
In the discussion that follows, we refer to the business that we operated prior to the Level 3 has certain deferred costsacquisition as "Legacy CenturyLink", and deferred revenues on its balance sheet associated with capacity leases. Based onwe refer to the accounting guidance forincremental business combinations, these existing deferred costs and deferred revenues are expected to be assigned little or no value inactivities that we now operate as a result of the purchase price allocation process and will thus be eliminated.Level 3 acquisition as "Legacy Level 3."

For unaudited pro forma condensed combinedadditional information about our acquisition of Level 3, see (i) Note 2—Acquisition of Level 3 to our consolidated financial information relating tostatements in Item 1 of Part I of this report, (ii) our current report on Form 8-K/A filed by us with the acquisition, seeSecurities and Exchange Commission (the "SEC") on January 16, 2018, (iii) our current report on Form 8-K filed by us with the SEC on November 1, 2017 and (iv) the definitive joint proxy statement/prospectus filed by us with the SEC by us on February 13, 2017. This pro forma financial information is based upon preliminary purchase price allocations and various assumptions and estimates, all of which we urge you to carefully consider in connection with your review of such information.
Sale of Data Centers and Colocation Business
On November 3, 2016,May 1, 2017, we entered into a definitive stock purchase agreement to sellsold our data centers and colocation business to a consortium led by BC Partners, Inc. and Medina Capital ("the Purchaser") in exchange for pre-tax cash proceeds of $1.8 billion and a minority stake in the limited partnership that owns the consortium's newly-formed global secure infrastructure company, Cyxtera Technologies. As part of the transaction, the Purchaser acquired 57 of our data centers and assumed our capital lease obligations, which amounted to $297$294 million as of March 31,on May 1, 2017, related to the properties that we sold.divested properties.
Cyxtera Technologies acquired the 57 data centers May 1, 2017. ThisOur colocation business generated revenues (excluding revenue from affiliates) of approximately $153 million and $155 million (excluding revenue with affiliates) for the three months ended March 31, 20172017.
This transaction did not meet the accounting requirements for a sale-leaseback transaction as described in ASC 840-40, Leases - Sale-Leaseback Transaction. Under the failed-sale-leaseback accounting model, we are deemed under GAAP to still own certain real estate assets sold to Cyxtera.
After factoring in the costs to sell the data centers and 2016, respectively (a small portioncolocation business, excluding the impacts from the failed-sale-leaseback accounting treatment, the sale resulted in a $20 million gain as a result of which will be retained by us). Wethe aggregate value of the consideration we received initialexceeding the carrying value of the divested assets and transferred liabilities. Based on the fair market values of the failed-sale-leaseback assets, the failed-sale-leaseback accounting treatment resulted in a loss of $102 million as a result of the requirement to treat a certain amount of the pre-tax cash proceeds from the sale of $1.86 billion,the assets as though it were the result of a financing obligation. The combined net loss of $82 million is included in selling, general and administrative expenses in our consolidated statement of operations for the year ended December 31, 2017. The sale also resulted in a significant capital loss carryforward, which is subjectwas entirely offset by a valuation allowance due to customary post-closing adjustments. We planour determination that we are not likely to use a portionbe able to utilize this carryforward prior to its expiration.
For all of these after-tax2018, we will be required by GAAP to record similar non-cash adjustments to our net cash proceeds to partly fundincome. Upon the January 1, 2019 implementation of the new accounting standard for Leases (ASU 2016-02), which was issued by the FASB in early 2016, this particular accounting treatment will no longer be applicable for this transaction, and the above-described real estate assets and corresponding financing obligation will be derecognized from our acquisition of Level 3.consolidated balance sheet.
See Note 3—Sale of Data Centers and Colocation Business to our consolidated financial statements in Item 1 of Part I of this report for additional information.information on the sale.
New Organizational Structure
Effective January 11,In connection with our above-described acquisition of Level 3, effective November 1, 2017, we implemented a new organizationalorganization structure designed to further strengthenand began managing our ability to attain our operational, strategic and financial goals. Prior to this reorganization, we operated and reported asoperations in two segments,segments: business and consumer. As a result ofOur consumer segment remains substantially unchanged under this reorganization, we changed the name of the predecessorand our newly reorganized business segment toincludes the "enterprise"Legacy CenturyLink enterprise segment operations and the Legacy Level 3 operations. In addition, we reassigned our information technology, managed hosting, cloud hosting and hosting area network operations back into the business segment from the former non-reportable operating segment. We now reportAt March 31, 2018, we had the following two segments:
EnterpriseBusiness Segment.This segment consists generally of providing strategic, legacy and data integration products and services to small, medium and enterprise business, wholesale and governmentalgovernment customers, including other communication providers. Our strategic products and services offered to these customers include our MPLS, Ethernet, colocation, broadband, VoIP and other ancillary services. Our legacy services offered to these customers primarily include local and long-distance voice, including the sale of unbundledVPN data network, elements ("UNEs"), which allow our wholesale customers to use all or part of our network to provide voice and data services to their customers, private line (including special access)business data services), switched accessEthernet, information technology, wavelength, broadband, colocation and data center services, managed services, professional and other ancillary services. Our data integration offerings include the sale of telecommunicationsservices provided in connection with selling equipment, located on customers' premisesnetwork security and related products and professionalvarious other ancillary services, all of which are described further below under the heading "Product and Service Categories""Operating Revenues"; and
Consumer Segment. This segment consists generally of providing strategic and legacy products and services to residential customers. Our strategic products and services offered to these customers include our broadband, video (including our Prism TV services) and other ancillary services. Our legacy services offered to these customers include local and long-distance voice, video and other ancillary services.
In connection with our January 2017 reorganization, we also reassigned our information technology, managed hosting, cloud hosting and hosting area network services from our former business segment to a new non-reportable operating segment.

Results of Operations
The following table summarizes the results of our consolidated operations for the three months ended March 31, 2017 and 2016:operations.
Three Months Ended March 31,Three Months Ended March 31,
2017 20162018 2017
(Dollars in millions except per share amounts)
Operating revenues$4,209
 4,401
$5,945
 4,209
Operating expenses3,578
 3,713
5,195
 3,578
Operating income631
 688
750
 631
Interest expense and other (expense) income, net(324) (308)(514) (324)
Income tax expense144
 144
121
 144
Net income$163
 236
$115
 163
Basic earnings per common share$0.30
 0.44
$0.11
 0.30
Diluted earnings per common share$0.30
 0.44
$0.11
 0.30
The following table summarizes our access lines, broadband subscribers and number of employees:
As of March 31, 
Increase /
(Decrease)
 % ChangeAs of March 31, 
Increase /
(Decrease)
 % Change
2017 2016 2018 2017 
(in thousands)  (in thousands)  
Operational metrics:              
Total access lines(1)
10,945
 11,611
 (666) (6)%
Total broadband subscribers(1)
5,945
 6,056
 (111) (2)%
Total consumer broadband subscribers(1)
4,986
 5,291
 (305) (6)%
Total employees40.0
 42.8
 (2.8) (7)%50.0
 40.0
 10.0
 25 %

(1) 
Access lines are lines reaching from the customers' premises to a connection with the public network andConsumer broadband subscribers are customers that purchase broadband connection service through their existing telephone lines, stand-alone telephone lines, or fiber-optic cables. Our methodology for counting our access lines andconsumer broadband subscribers includes only those lines that we use to provide services to external customers and excludes lines used solely by us and our affiliates. It also excludes unbundled loops and includes stand-alone consumer broadband subscribers. We count lines when we install the service.
During the last decade, we have experienced revenue declines primarily due to declines in access lines, private line customers, switched access rates and minutes of use. To mitigate these revenue declines, we remain focused on efforts to, among other things:
promote long-term relationships with our customers through bundling of integrated services;
increase the capacity, speed and usage of our networks;
provide a wide array of diverse services, including enhanced or additional services that may become available in the future due to, among other things, advances in technology or improvements in our infrastructure;
provide our broadband and premium services to a higher percentage of our customers;
pursue acquisitions of additional assets if available at attractive prices;
increase prices on our products and services if and when practicable;
increase the capacity, speed and usage of our networks; and
market our products and services to new customers.

Operating Revenues
From time to time, we change the categorization of our products and services, and we may make similar changes in the future. During the second quarter of 2016, we determined that because of declines due to customer migration to other strategic products and services, certain of our enterprise low-bandwidth data services, specifically our private line (including special access) services in our enterprise segment, are more closely aligned with our legacy services than with our strategic services. As described in greater detail in Note 9—Segment Information, these operating revenues are reflected as legacy services.
We categorize our products, services and revenues among the following fourfive categories:
StrategicIP and data services, which include primarily broadband, MPLS,VPN data networks, Ethernet, colocation, hosting (including cloud hosting and managed hosting),IP, video (including our facilities-based video services which we offer in 16 markets), VoIP, information technologyand Vyvx broadcast services) and other ancillary services;
Legacy servicesTransport and infrastructure, which include broadband, private line (including business data services), data center facilities and services, including cloud, hosting and application management solutions, wavelength, equipment sales and professional services, network security services and other ancillary services;

Voice and collaboration, which includes primarily local and long-distance voice, including the sale of UNEs, private line (including special access), Integrated Services Digital Network ("ISDN") (which use regular telephone lines to supportwholesale voice, video and data applications), switched access and other ancillary services;service;
Data integrationIT and managed services, which includes the sale of telecommunications equipment located on customers' premisesinclude information technology services and related products and professionalmanaged services, such aswhich may be purchased in conjunction with our other network management, installation and maintenance of data equipment and building of proprietary fiber-optic broadband networks for our governmental and business customers;services; and
Other operatingRegulatory revenues, which consists primarilyconsist of Universal Service Fund ("USF") and Connect America Fund ("CAF") support payments Universal Service Fund ("USF") support payments and USF surcharges.other operating revenues. We receive federal support payments from both Phase 1 and Phase 2 of the CAF program, and support payments from both federal and state USF programs. Theseprograms and from the federal CAF program. The USF and CAF support payments are government subsidies designed to reimburse us for various costs related to certain telecommunications services, including the costs of deploying, maintaining and operating voice and broadband infrastructure in high-cost rural areas where we are not able to fully recover our costs from our customers.services. We also collect USF surcharges based on specific items we list on our customers' invoices to fund the Federal Communications Commission's ("FCC") universal service programs. We also generate other operating revenues from the leasing and subleasing of space in our office buildings, warehouses and other properties.properties and from rental income associated with the failed-sale-leaseback. Because we centrally manage the activities that generate these other operatingregulatory revenues, these revenues are not included in our segment revenues.
The following table summarizes our consolidated operating revenues recorded under our fourfive revenue categories:
 Three Months Ended March 31, Increase /
(Decrease)
 % Change 
 2018 2017  
 (Dollars in millions)  
IP & Data Services (1)$1,845
 864
 981
 114%
Transport & Infrastructure (2)2,118
 1,607
 511
 32%
Voice & Collaboration (3)1,637
 1,414
 223
 16%
IT & Managed Services (4)162
 152
 10
 7%
Regulatory revenues (5)183
 172
 11
 6%
Total operating revenues$5,945
 4,209
 1,736
 41%
_______________________________________________________________ 
 Three Months Ended March 31, Increase /
(Decrease)
 % Change 
 2017 2016  
 (Dollars in millions)  
Strategic services$2,000
 1,989
 11
 1 %
Legacy services1,803
 1,988
 (185) (9)%
Data integration118
 116
 2
 2 %
Other288
 308
 (20) (6)%
Total operating revenues$4,209
 4,401
 (192) (4)%
(1)Includes primarily VPN data network, Ethernet, IP, video and ancillary revenues.
(2)Includes primarily broadband, private line (including business data services), colocation and data centers, wavelength and ancillary revenues.
(3)Includes local, long-distance and other ancillary revenues.
(4)Includes IT services and managed services revenues.
(5)Includes CAF Phase I, CAF Phase 2, federal and state USF support revenue, sublease rental income and failed-sale leaseback income.
Our total operating revenues decreasedincreased by $192 million,$1.736 billion, or 4%41%, for the three months ended March 31, 20172018, as compared to the three months ended March 31, 2016.2017. The decreaseincrease in our total operating revenues was primarily due to lower legacy services revenues, which decreased by $185 million, or 9%, for the three months ended March 31, 2017 as comparedlargely attributable to the three months ended March 31, 2016.
acquisition of Level 3, which contributed operating revenues (net of intercompany eliminations) of $2.062 billion. This was partially offset by a decrease in Legacy CenturyLink transport and infrastructure and voice and collaboration revenue. The decline in our legacy services revenues reflects the continuing loss of access linestransport and loss of long-distance revenuesinfrastructure decrease was primarily due to the displacementsale of traditional wireline telephone services by other competitive productsthe collocation and services, including data center business in May 2017 while the decrease in voice and wireless communication services, and reductions in the volume of our private line (including special access) services. We estimate that the rate of our access lines losses will be between 4.0% and 6.0% over the full year of 2017.
The growth in our strategic services revenuescollaboration was primarily due to increased demand fora decrease in revenue from our Ethernet, MPLS and facilities-based video services, which were partially offset by declines in our managed hosting services and our satellite video services revenues due to the restructuring of one of our contractual agreements and losses of broadband subscribers.traditional voice telecommunications services.

Data integration revenues, which are typically more volatile than our other sources of revenues, increased by $2 million, or 2%, for the three months ended March 31, 2017 as compared to the three months ended March 31, 2016. The increase in our data integration revenues was primarily due to increases in governmental and business sales and maintenance services.
Other operating revenues decreased by $20 million, or 6%, for the three months ended March 31, 2017 as compared to the three months ended March 31, 2016 primarily due to lower federal USF surcharge revenues as a result of decreases in rates and a reduction in high-cost support revenues.
Further analysis of our segment operating revenues and trends impacting our performance are provided below in "Segment Results."
Operating Expenses
The following table summarizes our consolidated operating expenses:
Three Months Ended March 31, Increase /
(Decrease)
 % Change Three Months Ended March 31, Increase /
(Decrease)
 % Change 
2017 2016 2018 2017 
(Dollars in millions)  (Dollars in millions)  
Cost of services and products (exclusive of depreciation and amortization)$1,888
 1,900
 (12) (1)%$2,803
 1,888
 915
 48%
Selling, general and administrative810
 837
 (27) (3)%1,109
 810
 299
 37%
Depreciation and amortization880
 976
 (96) (10)%1,283
 880
 403
 46%
Total operating expenses$3,578
 3,713
 (135) (4)%$5,195
 3,578
 1,617
 45%
Cost of Services and Products (exclusive of depreciation and amortization)
Cost of services and products (exclusive of depreciation and amortization) decreasedincreased by $12$915 million, or 1%48%, for the three months ended March 31, 20172018 as compared to the three months ended March 31, 2016.2017. The decreaseincrease in our costcosts of services and products (exclusive of depreciation and amortization) was attributable to the inclusion of $998 million in Legacy Level 3 costs (net of intercompany eliminations) in our consolidated costs of services and products (exclusive of depreciation and amortization) and an increase in facilities costs. These were partially offset by a decrease in costs of services and products (exclusive of depreciation and amortization) for Legacy CenturyLink of $83 million, or 4%, for the quarter ended March 31, 2018 as compared to the quarter ended March 31, 2017. This was primarily due to reductions in salaries and wages and employee benefitsrelated expenses from lower headcount and USF rates, which were partially offset by increases in network expense, facility costslower real estate and content costs for Prism TV resultingpower expenses from increases in content volumethe 2017 sale of our data centers and rates.colocation business.
Selling, General and Administrative
Selling, general and administrative expenses decreasedincreased by $27$299 million, or 3%37%, for the three months ended March 31, 20172018 as compared to the three months ended March 31, 20162017. The decreaseincrease in our selling, general and administrative expenses was attributable to the inclusion of $344 million in Legacy Level 3 costs in our consolidated selling, general and administrative expenses. This was partially offset by a decrease in Legacy CenturyLink's selling, general and administrative expenses of $45 million, or 6%, for the quarter ended March 31, 2018 as compared to the quarter ended March 31, 2017. This was primarily due to reductions in salaries and wages from lower headcount, property and other taxes, professional feescontract labor, marketing expenses and external commissions, which were partially offset by increases in marketing and advertising expenses and employee benefits and an impairment loss on assets held for sale associated with our data centers and colocation business.higher Level 3 acquisition expenses.
Depreciation and Amortization
The following table provides detail of our depreciation and amortization expense:
Three Months Ended March 31, Increase / (Decrease) % ChangeThree Months Ended March 31, Increase / (Decrease) % Change
2017 2016 2018 2017 
(Dollars in millions)  (Dollars in millions)  
Depreciation$605
 661
 (56) (8)%$839
 605
 234
 39%
Amortization275
 315
 (40) (13)%444
 275
 169
 61%
Total depreciation and amortization$880
 976
 (96) (10)%$1,283
 880
 403
 46%
Depreciation expense decreasedincreased by $56$234 million, or 8%39%, for the three months ended March 31, 2017,2018 as compared to the three months ended March 31, 2016.2017. Depreciation expense is impacted by several factors, including changes in our depreciable cost basis, changes in our estimates of the remaining economic life of certain network assets, the addition of new plant and our entry into an agreement to sellthe sale of our data centers and colocation business. The depreciation expense related to our plant for the three months ended March 31, 20172018 was lowerhigher than the depreciation expense for the three months ended March 31, 20162017 due to full depreciation and retirementthe inclusion of certain plant placed in service prior to 2017. Additionally, we ceased depreciating property, plant and equipment assets of our data centers and colocation business when we entered into the agreement to sell that business. We estimate that we would have recorded additionalLegacy Level 3 depreciation expense duringof $237 million for the first quarter 2017 of $40 million if we had not agreed to sell the data centers and colocation business. This decrease was partially offset by an increase in depreciation expense attributable to new plant placed in service sincethree months ended March 31, 2016.2018.
Amortization expense decreasedincreased by $40$169 million, or 13%61%, for the three months ended March 31, 20172018 as compared to the three months ended March 31, 2016.2017. The decreaseincrease in amortization expense was primarily due to the use of accelerated amortization for a portion of our customer relationship assets and our entry into an agreement to sell our data centers and colocation business. The effect of using an accelerated amortization method results in an incremental decline in expense each period as the intangible assets amortize. We ceased amortizing the intangible assets of our data centers and colocation business when we entered into the agreement to sell that business. We estimate that we would have recorded additional amortization expense duringfor the first quarterthree months ended March 31, 2017 of $10 million if we had not agreed to sell the data centers and colocation business. In addition, amortization of capitalized software was lower due to software becoming fully amortized faster than new softwarethe inclusion of the Legacy Level 3 amortization expense of $194 million for the three months ended March 31, 2018 which was acquired or developed.partially offset by a lower Legacy CenturyLink intangible asset base.
Further analysis of our segment operating expenses by segment is provided below in "Segment Results."

Other Consolidated Results
The following table summarizes our total other expense, net and income tax expense:
Three Months Ended March 31, Increase /
(Decrease)
 % ChangeThree Months Ended March 31, Increase /
(Decrease)
 % Change
2017 2016 2018 2017 
(Dollars in millions)  (Dollars in millions)  
Interest expense$(318) (331) (13) (4)%$(535) (318) 217
 68 %
Other (expense) income, net(6) 23
 (29) nm
Other income (expense), net21
 (6) 27
 nm
Total other expense, net$(324) (308) 16
 5 %$(514) (324) 190
 59 %
Income tax expense$144
 144
 
  %$121
 144
 (23) (16)%

nm-Percentages greater than 200% and comparisons between positive and negative values or to/from zero values are considered not meaningful.
Interest Expense
Interest expense decreasedincreased by $13$217 million, or 4%68%, for the three months ended March 31, 20172018 as compared to the three months ended March 31, 2016.2017. The declineincrease in interest expense was primarily due to a reductionthe issuance of $7.945 billion of term loans in the amountsecond half of coupon2017 for the purpose of providing funding for the Level 3 acquisition and the assumption of Level 3's debt upon the consummation of the acquisition of Level 3, which accounted for $120 million in first quarter 2018 interest on senior notes and anexpense. Remaining increase inis due to the amountassumption of interest capitalized into property, plant and equipment.Level 3 debt at the time of acquisition.
Other Income (Expense) Income,, Net
Other income (expense) income,, net reflects certain items not directly related to our core operations, including our share of income from partnerships we do not control, interest income, gains and losses from non-operating asset dispositions, foreign currency gains and losses and components of net periodic pension and postretirement benefit costs. Other (expense) income (expense), net decreasedchanged by $29$27 million, for the three months ended March 31, 20172018, as compared to the three months ended March 31, 2016. The2017 due to a decrease in other (expense) income, net was primarily duethe pension and postretirement charge and favorable foreign exchange rates in the first quarter of 2018 compared to the increase in pension and post-retirement benefit expense, which is now recordedfirst quarter of 2017. In addition, the three months ended March 31, 2018 included other income attributable to other (expense) income, net. See Note 1—Background, "Recently Adopted Accounting Pronouncements" on our adoption of ASU 2017-07 and Note 6—Employee Benefits for additional information.

Level 3.
Income Tax Expense
For the three months ended March 31, 20172018 and 2016,2017, our effective income tax rate was 46.9%51.3% and 37.9%46.9%, respectively. The effective tax rate for the three months ended March 31, 2018 was significantly impacted by the enactment of the Tax Cuts and Jobs Act legislation in December 2017 which resulted in a re-measurement of our deferred tax assets and liabilities at the new federal corporate tax rate. See Recent Tax Changes in "Liquidity and Capital Resources—Other Matters". The effective tax rate for the three months ended March 31, 2017 includes the tax impact of certain employee stock based compensation transactions, the tax impact of the sale and related corporate actions we have taken regarding certain subsidiaries involved in the data centers and colocation business as described in Note 3—Sale of Data Centers and Colocation Business and the effects of changes in state apportionment factors. The effective tax rate for the three months ended March 31, 2016 includes the effects of changes in state apportionment factors.business.

Segment Results
General
For financial reporting purposes, we have determined that as of March 31, 2018 we havehad two reportable segments, enterprisebusiness and consumer.
The results of our enterprisereportable segments, business and consumer, segments are summarized below:
Three Months Ended March 31,Three Months Ended March 31,
2017 20162018 2017
(Dollars in millions)(Dollars in millions)
Total segment revenues$3,768
 3,931
Total segment expenses1,930
 1,930
Total segment income1,838
 2,001
Total margin percentage49% 51%
   
Enterprise segment:   
Business segment:   
Revenues$2,356
 2,442
$4,383
 2,590
Expenses1,321
 1,319
2,613
 1,566
Income1,035
 1,123
Adjusted EBITDA$1,770
 1,024
Margin percentage44% 46%40% 40%
Consumer segment:      
Revenues$1,412
 1,489
$1,379
 1,447
Expenses609
 611
613
 640
Income803
 878
Adjusted EBITDA$766
 807
Margin percentage57% 59%56% 56%
Allocation of Revenues and Expenses
Our segment revenues include all revenues from our strategic services, legacy services and data integration as described in more detail above under "Operating Revenues." Segment revenues are based upon each customer's classification as either enterprise or consumer. We report our segment revenues based upon all services provided to that segment's customers. For additional information on how we allocate expenses to our segments, as well as other additional information about ourreportable segments, see Note 9—10—Segment InformationInformation.
Products and Services
In connection with our acquisition of Level 3 on November 1, 2017, we revised the way we categorize our products and services and now report our related revenues under the following categories: IP and data services, transport and infrastructure, voice and collaboration, IT and managed services and regulatory revenues. From time to time, we change the categorization of our consolidated financial statementsproducts and services, and we may make similar changes in Item 1 of Part I of this report.the future.
We offer our customers the ability to bundle together several products and services. We believe our customers value the convenience and price discounts associated with receiving multiple services through a single company.

EnterpriseBusiness Segment
The operations of our enterprisebusiness segment have been, and are expected to continue to be, impacted by several significant trends, including those described below:
Strategic services.Revenues. Our mix of total enterprisebusiness segment revenues continues to migrate from legacytraditional wireline voice services to strategicnewer, lower cost more technologically advanced products and services as our small, medium and enterprise business, wholesale and governmentalgovernment customers increasingly demand integrated data, broadband, hosting and voice services. We compete against other telecommunication providers, as well as other regional and national carriers, other data transport providers, cable companies, CLECs and other enterprises, some of whom are substantially larger than us. Competition is based on price, bandwidth, quality and speed of service, promotions and bundled offerings. In providing broadband services, we compete primarily with cable companies, wireless providers, technology companies and other broadband service providers. Our Ethernet-based services in the wholesale market face competition from cable companies and competitive fiber-based telecommunications providers. We anticipate continued pricing pressure for our colocation services as our competitors continue to expand their enterprise colocation operations. A recent sustained expansion in competitive cloud computing offerings by technology companies and other competitors has led to other increased pricing pressure, a migration towards lower-priced cloud-based services and enhanced competition for contracts, and we expect these trends to continue. Customers' demand for new technology has also increased the number of competitors offering strategic services similar to ours. Price compression resulting from each of these above-mentioned competitive pressures has negatively impacted the operating margins of our strategic services,certain business product and service offerings, and we expect this trend to continue. Operating costs also impact the operating margins of our strategic services, but to a lesser extent than price compressionOur traditional wireline products and customer disconnects. These operating costs include employee costs, sales commissions, software costs on selected services, installation costs and third-party facility costs. We believe increases in operating costs have generally had a greater impact on the operating margins of our strategic services as compared to our legacy services, principally because our strategic services rely more heavily upon the above-listed support functions;
Legacy services. We continue to experience customers migrating away from our higher margin legacy services into lower margin strategic services. Our legacy services revenues have been, and we expect they will continue to be, adversely affected by access line losses and price compression. In particular, our access, local services and long-distance revenues have been, and we expect will continue to be, adversely affected by customer migration to more technologically advanced services, offered by us and our competitors, ana substantial increase in the use of non-voice communications, and a related decrease in the demand for traditional voice services, industry consolidation and price compression caused by regulation and rate reductions. For example, many of our enterprisebusiness segment customers are substituting cable, wireless and VoIPVoice over Internet Protocol ("VoIP") services for traditional voice telecommunications services, resulting in continued declines of our legacy services revenues.access revenue loss. Demand for our private line services (including special access)business data services) continues to decline due to our customers' optimization of their networks, industry consolidation and technological migration to higher-speed services. Although our legacytraditional wireline services generally face fewer direct competitors than certain of our strategicnewer, lower cost more advanced products and services, customer migration and, to a lesser degree, price compression from competitive pressures have negatively impacted our legacytraditional wireline revenues and the operating margins of our legacythese services. We expect this trend to continue. Operating costs, such as installation costs and third-party facility costs, have also negatively impacted the operating margins of our legacy services, but to a lesser extent than customer loss, customer migration and price compression. Operating costs also tend to impact our legacy services to a lesser extent than strategic services as noted above;
Data integration.We expect both data integrationequipment sales and professional services revenue and the related costs will fluctuate from year to year as this offering tends to be more sensitive than others to changes in the economy and in spending trends of our federal, state and local governmentalgovernment customers, many of whom have experienced substantial budget cuts over the past several years, with the possibility of additional future budget cuts.
Expenses. Our data integrationoperating costs also impact the operating margins are typically smaller than mostof all of our other offerings;above-mentioned services, but to a lesser extent than price compression and customer disconnects. These operating costs include employee costs, sales commissions, software costs on selected services, installation costs and third-party facility costs. We believe increases in operating costs have generally had a greater impact on the operating margins of some of our newer, more technologically advanced services as compared to our traditional wireline services, principally because those newer services rely more heavily upon the above-listed support functions. Operating costs, such as installation costs and third-party facility costs, have also negatively impacted the operating margins of our traditional wireline products and services, but to a lesser extent than customer migration and price compression.
Operating efficiencies.Efficiencies. We continue to evaluate our segment operating structure and focus. This involves balancing our workforce in response to our workload requirements, productivity improvements and changes in industry, competitive, technological and regulatory conditions, while achieving operational efficiencies and improving our processes through automation. However, our ongoing efforts to increase revenue will continue to require that we incur higher costs in some areas. We also expect our enterprisebusiness segment to benefit indirectly from enhanced efficiencies in our company-wide network operations.


The following table summarizes the results of operations from our enterprisebusiness segment:
 Enterprise Segment
 Three Months Ended March 31, Increase /
(Decrease)
 %Change
 2017 2016 
 (Dollars in millions)  
Segment revenues:       
Strategic services       
High-bandwidth data services (1)$769
 738
 31
 4 %
Other strategic services (2)315
 315
 
  %
Total strategic services revenues1,084
 1,053
 31
 3 %
Legacy services       
Voice services (3)573
 622
 (49) (8)%
Low-bandwidth data services (4)314
 365
 (51) (14)%
Other legacy services (5)268
 287
 (19) (7)%
Total legacy services revenues1,155
 1,274
 (119) (9)%
Data integration117
 115
 2
 2 %
Total revenues2,356
 2,442
 (86) (4)%
        
Segment expenses1,321
 1,319
 2
  %
Segment income$1,035
 1,123
 (88) (8)%
Segment margin percentage44% 46%  
  
____________________________________________________________________ 
 Business Segment
 Three Months Ended March 31, Increase /
(Decrease)
 %Change
 2018 2017 
 (Dollars in millions)  
Segment revenues:       
IP & Data Services (1)$1,748
 744
 1,004
 135%
Transport & Infrastructure (2)1,362
 906
 456
 50%
Voice & Collaboration (3)1,111
 788
 323
 41%
IT & Managed Services (4)162
 152
 10
 7%
Total segment revenues4,383
 2,590
 1,793
 69%
        
Segment expenses:       
Total expenses2,613
 1,566
 1,047
 67%
Segment adjusted EBITDA$1,770
 1,024
 746
 73%
Segment margin percentage40% 40%  
  
__________________________________________________________________ 
(1)Includes MPLSprimarily VPN data network, Ethernet, IP, video and Ethernet revenueancillary revenues.
(2)Includes primarily broadband, private line (including business data services), colocation broadband, VOIP and video revenuedata centers, wavelength and ancillary revenues.
(3)Includes local, long-distance and long-distance voice revenueother ancillary revenues.
(4)Includes private line (including special access) revenue
(5)Includes UNEs, public access, switched accessIT services and other ancillary revenuemanaged services revenues.
Segment Revenues
EnterpriseBusiness segment revenues decreasedincreased by $86 million,$1.793 billion, or 4%69%, for the three months ended March 31, 20172018 as compared to the three months ended March 31, 2016.2017. The increase in our total operating revenues was largely attributable to the acquisition of Level 3, which contributed operating revenues (net of intercompany eliminations) of $2.062 billion. This was partially offset by a decrease in enterprise segment revenuesLegacy CenturyLink transport and infrastructure and voice and collaboration revenue. The transport and infrastructure decrease was primarily due to declinesthe sale of the collocation and data center business in our legacy services revenues. The declineMay 2017 while the decrease in legacy services revenuesvoice and collaboration was attributabledue to a reductiondecrease in local service access lines and lower volumes of long-distance and access services resultingrevenue from the competitive and technological factors noted above and to reductions in the volume of private line (including special access) services. The increase in our strategic services revenues was primarily due to increases in MPLS unit growth and higher Ethernet and VOIP volumes. The increase in our data integration revenues was primarily due to increases in governmental and business sales and maintenancetraditional voice telecommunications services.
Segment Expenses
EnterpriseBusiness segment expenses increased by $2 million,$1.047 billion, or less than 1%67%, for the three months ended March 31, 20172018 as compared to the three months ended March 31, 2016.2017. The increase in our enterprisebusiness segment expenses for the three months ended March 31, 2018 was primarily due to increases in facility costs, bad debt expense and network expense, which were partially offset by decreases in salaries and wages and marketing and advertising expenses.the inclusion of Level 3 expenses for the first three months of 2018.
Segment IncomeAdjusted EBITDA
EnterpriseBusiness segment income decreasedadjusted EBITDA increased by $88$746 million, or 8%73%, for the three months ended March 31, 20172018 as compared to the three months ended March 31, 2016.2017. The declineincrease in our enterprisebusiness segment incomeadjusted EBITDA was due predominantly to the loss of customers and lower service volumes in our legacy services.items mentioned above.

Consumer Segment
The operations of our consumer segment have been, and are expected to continue to be, impacted by several significant trends, including those described below:
Strategic services.Revenues. In order to remain competitive and attract additional residential broadband subscribers, we believe it is important to continually increase our broadband network's scope and connection speeds. As a result, we continue to invest in our broadband network, which allows for the delivery of higher-speed broadband services to a greater number of customers. We compete in a maturing broadband market in which most consumers already have broadband services and growth rates in new subscribers have slowed.slowed or declined. Moreover, as described further in Item 1A of Part III of thisour annual report on Form 10-K for the year ended December 31, 2017, certain of our competitors continue to provide broadband services at higher average transmission speeds than ours or through advanced wireless data service offerings, both of which we believe have impacted the competitiveness of certain of our broadband offerings. Our associated content costs continue to increase and the video business has become more competitive as more options become available to customers to access video services through new technologies. The demand for new technology has increased the number of competitors offering strategic services similar to ours. Price compression and new technology from our competitors have negatively impacted the operating margins of our strategic services, and we expect this trend to continue. Operating costs also impact the operating margins of our strategic services. These operating costs include employee costs, marketing and advertising expenses, sales commissions, Prism TV content costs and installation costs. We believe increases in operating costs have generally had a greater impact on our operating margins of our strategic services as compared to our legacy services, principally because our strategic services rely more heavily upon the above-listed costs;
Legacy services. Our voice revenues have been, and we expect they will continue to be, adversely affected by access line losses and lower long-distance voice service volumes. Intense competition and product substitution continue to drive our access line losses. For example, many consumers are substituting cable and wireless voice services and electronic mail, texting and social networking non-voice services for traditional voice telecommunications services. The offering of our facilities-based video services in our markets has required us to incur substantial start-up expenses in advance of marketing and selling the service. Also, our associated content costs continue to increase and the video business has become more competitive as more options become available to customers to access video services through new technologies. The demand for new technology has increased the number of competitors offering services similar to ours. Price compression and new technology from our competitors have negatively impacted the operating margins of our newer, more technologically advanced products and services. We expect that these factors and trends will continue to negatively impact our consumer business. As a result of the expected loss of higher margin services associated with access lines, we continue to offer our customers service bundling and other product promotions to help mitigate this trend, as described below. Customer migration and price compression from competitive pressures have not only negatively impacted our legacytraditional wireline services revenues, but they have also negatively impacted the operating margins of our legacythese services and we expect this trend to continue. During the first quarter of 2018, CenturyLink announced it terminated its CenturyLink Stream and Over the Top ("OTT") product offerings effective March 31, 2018. As a result of this decision, during the first quarter, CenturyLink recognized an impairment of $42 million related to hardware, software and capitalized development costs.
Expenses. Operating costs also impact the operating margins of these services. These operating costs include employee costs, marketing and advertising expenses, sales commissions, TV content costs and installation costs. We believe increases in operating costs have generally had a greater impact on our operating margins of our newer, more technologically advanced products and services as compared to our traditional wireline services, principally because our newer, more technologically advanced products and services rely more heavily upon the above-listed operating expenses. Operating costs, such as installation costs and facility costs, have also negatively impacted the operating margins of our legacytraditional wireline products and services, but to a lesser extent than customer migration and price compression. Operating costs also tend to impact our legacytraditional wireline products and services margins to a lesser extent than our strategicnewer, more technologically advanced products and services margins as noted above;above.
Service bundling and product promotions.We offer our customers the ability to bundle multiple products and services. These customers can bundle broadband services with other services such as local voice, video long-distance and wireless.long-distance. While we believe our bundled service offerings can help retain customers, they also tend to lower our profit margins in the consumer segment due to the related discounts; and
Operating efficiencies. We continue to evaluate our segment operating structure and focus. This involves balancing our workforce in response to our workload requirements, productivity improvements and changes in industry, competitive, technological and regulatory conditions. We also expect our consumer segment to benefit indirectly from enhanced efficiencies in our company-wide network operations.









The following table summarizes the results of operations from our consumer segment:
 Consumer Segment
 Three Months Ended March 31, 
Increase /
(Decrease)
 % Change
 2017 2016 
 (Dollars in millions)  
Segment revenues:       
Strategic services       
Broadband services (1)$661
 667
 (6) (1)%
Other strategic services (2)103
 107
 (4) (4)%
Total strategic services revenues764
 774
 (10) (1)%
Legacy services       
Voice services (3)575
 634
 (59) (9)%
Other legacy services (4)73
 80
 (7) (9)%
Total legacy services revenues648
 714
 (66) (9)%
Data integration
 1
 (1) nm
Total revenues1,412
 1,489
 (77) (5)%
        
Segment expenses609
 611
 (2)  %
Segment income$803
 878
 (75) (9)%
Segment margin percentage57% 59%  
  
 Consumer Segment
 Three Months Ended March 31, 
Increase /
(Decrease)
 % Change
 2018 2017 
 (Dollars in millions)  
Segment revenues:       
IP & Data Services (1)$97
 120
 (23) (19)%
Transport & Infrastructure (2)756
 701
 55
 8 %
Voice & Collaboration (3)526
 626
 (100) (16)%
Total segment revenues1,379
 1,447
 (68) (5)%
        
Segment expenses:       
Total expenses613
 640
 (27) (4)%
Segment adjusted EBITDA$766
 807
 (41) (5)%
Segment margin percentage56% 56%  
  
________________________________________________________________________________________________________________________________________ 
nm-Percentages greater than 200% and comparisons between positive and negative values or to/from zero values are considered not meaningful.
(1)Includes broadband and related services revenueretail video revenues (including our facilities-based video revenues).
(2)Includes videoprimarily broadband and other revenueequipment sales and professional services revenues.
(3)Includes local, and long-distance voice revenue
(4)Includesand other ancillary revenuerevenues.
Segment Revenues
Consumer segment revenues decreased by $77$68 million, or 5%, for the three months ended March 31, 20172018 as compared to the three months ended March 31, 2016.2017. The decrease in our consumer segment revenues was primarily due to declines in both our strategic services revenues and our legacy services revenues. The decrease in our strategic services revenuesfor the three months ended March 31, 2018 was primarily due to a decline in the number of broadband subscribers and a reduction in our satellite video services revenues due to the restructuring of one of our contractual agreements, which were partially offset by increases in the number of our Prism TV customers. The decrease in our legacy services revenues was primarily due to lower local and long-distanceVoice revenue as a result of the continued decline in revenue from our traditional voice service volumes associated with access line losses resulting from the competitive and technological factors noted above.telecommunications services.
Segment Expenses
Consumer segment expenses decreased by $2$27 million, or less than 1%4%, for the three months ended March 31, 20172018 as compared to the three months ended March 31, 2016.2017. The decrease in our consumer segment expenses for the three months ended March 31, 2018 was primarily due to a reduction in headcount and decreases in marketing and advertising expenses, bad debt expense and external commissions, which were partially offset by increases in costs related to Prism TV (resulting from higher content volume and rates).expenses.
Segment IncomeAdjusted EBITDA
Consumer segment incomeadjusted EBITDA decreased by $75$41 million, or 9%5%, for the three months ended March 31, 20172018 as compared to the three months ended March 31, 2016.2017. The decrease in our consumer segment adjusted EBITDA was primarily due predominantly to loss of customers from legacy services and increases in the costs related to the growth in Prism TV.items mentioned above.

Liquidity and Capital Resources
Overview of Sources and Uses of Cash
We are a holding company that is dependent on the capital resources of our subsidiaries to satisfy our parent company liquidity requirements. Several of our significant operating subsidiaries have borrowed funds either on a standalone basis or as part of a separate restricted group with certain of its subsidiaries or affiliates. The terms of the instruments governing the indebtedness of these borrowers or borrowing groups may restrict our ability to access their accumulated cash. In addition, our ability to access the liquidity of these and other subsidiaries may be limited by tax and legal considerations and other factors.
At March 31, 2017,2018, we held cash and cash equivalents of $214$501 million, and we had $1.625$2.168 billion of borrowing capacity available under our $2 billion amended and restated revolving credit facility (referred to as our "Credit Facility", which is described further below). At March 31, 2017,facility. We had approximately $314 million of cash and cash equivalents outside the United States at March 31, 2018. We currently believe we have the ability to repatriate cash and cash equivalents into the United States without paying or accruing U.S. taxes, other than the possible payment of $75 million were held in foreign bank accounts for the purposeDeemed Repatriation Transition Tax discussed elsewhere herein and other limited exceptions. We do not currently intend to repatriate to the United States any of funding our foreign operations. Due to various factors,cash and cash equivalents from operating entities outside of Latin America.

Our acquisition of Level 3 on November 1, 2017, resulted in significant changes in our access to foreignconsolidated financial position, our debt structure and our future cash is generally much more restricted than our access to domestic cash.requirements.
Our executive officers and our Board of Directors periodically review our sources and potential uses of cash in connection with our annual budgeting process. Generally speaking, our principal funding source is cash from operating activities, and our principal cash requirements include operating expenses, capital expenditures, income taxes, debt repayments, dividends, periodic stock repurchases, periodic pension contributions and other benefits payments. As discussed below, the amount we pay forWe currently expect our cash income taxes is expectedtax payments will be lower in 2018 due to increase for most of 2017,lower income tax rates and the amountutilization of the NOLs acquired in the Level 3 acquisition, and we payexpect that our cash paid for retiree healthcare benefits is expected to increase substantially in 2017. The impact of the sale of our data centers and colocation business and the potential impact of the pending acquisition of Level 3 are further described below.will remain relatively flat.
Based on our current capital allocation objectives, during the remaining nine months of 20172018 we anticipateproject expending approximately $1.9$3.850 billion (excluding integration capital) of cash for capital investment in property, plant and equipment and almost $293approximately $576 million of cash for dividends per quarter of dividends on our common stock (based on the assumptions described below under "Dividends"), assuming solely for these purposes no impact from the Level 3 acquisition. During the remainder of 2017,. At March 31, 2018, we have debt maturities of $1.421 billion,$174 million, scheduled debt principal payments of $17$164 million and capital lease and other fixed payments of $41$99 million, excluding liabilities that we expect to assume later in 2017 in connection with consummating the Level 3 acquisition.each due during 2018. Each of the expenditures areis described further below.
We will continue to monitor our future sources and uses of cash, and anticipate that we will make adjustments to our capital allocation strategies when, as and if determined by our Board of Directors. We typically use our revolving credit facility as a source of liquidity for operating activities and our other cash requirements.
Impact of the Sale ofFor additional information, see "Risk Factors—Risks Affecting Our Data CentersLiquidity and Colocation Business
As discussed in Note 3—Sale of Data Centers and Colocation Business to our consolidated financial statementsCapital Resources" in Item 11A of Part I of thisour annual report we sold our data centers and colocation business on May 1, 2017 and received pre-tax cash proceeds of $1.86 billion from the sale, which is subject to customary post-closing adjustments. We anticipate we will make additional tax payments relating to the sale of approximately $75 million to $150 million, which are triggered by the sale and certain corporate restructuring actions we took regarding certain subsidiaries involved in the colocation business. We also expect ongoing cash flows from operating activities will be negatively impacted by approximately $30 million to $45 million per quarter.
Potential Impact of the Pending Acquisition of Level 3
If, as anticipated, we complete the acquisition of Level 3 by the end of third quarter of 2017 in the manner discussed in Note 2—Pending Acquisition of Level 3 to our consolidated financial statements in Item 1 of Part I of this report, we expect our operations, financial position and cash flows to be significantly impacted following the closing of the transaction. We expect to issue a significant amount of new debt to finance the Level 3 acquisition, and we would assume approximately $10.9 billion of Level 3’s outstanding debt upon consummating the acquisition. With this additional debt, we would expect our cash paid for interest payments to be significantly higher following the closing of the transaction. We project that our capital expenditures would increase significantly. Based on information included in Level 3’s publicly available annual guidance regarding its estimated 2017 capital expenditures, we anticipate that Level 3 will spend approximately $100 million to $125 million per month on average, in the period prior to closing, but that amount could be significantly different than amounts that we expect to spend in the months following the closing of the transaction. In connection with consummating the acquisition, we would expect to issue approximately 538 million shares of our common stock to Level 3 stockholders (including shares of CenturyLink common stock expected to be issued in exchange for outstanding Level 3 equity awards), based on the number of Level 3 shares held of record on January 25, 2017. Based on our current quarterly common stock dividend rate of $0.54 per share, this issuance of additional shares would result in an additional incremental dividend payment of approximately $290 million per quarter. Also, we expect our upcoming cash payments for transaction costs, integration costs and debt financing costs to be material primarily following the closing of the transaction. These above factors are expected to result in a net cash outflowForm 10-K for the period of 2017 following the closing. However, we expect we will have sufficient liquidity to more than offset the impact of the net cash outflows. As noted below under "Debt and Other Financing Arrangements," the Level 3 transaction could also adversely impact our credit ratings.

year ended December 31, 2017.
Capital Expenditures
We incur capital expenditures on an ongoing basis in order to enhance and modernize our networks, compete effectively in our markets and expand and improve our service offerings. We evaluate capital expenditure projects based on a variety of factors, including expected strategic impacts (such as forecasted impact on revenue growth, productivity, expenses, service levels and customer retention) and our expected return on investment. The amount of capital investment is influenced by, among other things, demand for our services and products, cash flow generated by operating activities, cash required for other purposes and regulatory considerations (such as our CAF Phase 2 infrastructure buildout requirements). Based on current circumstances, we estimate that our total capital expenditures for the remainder of 20172018 will be approximately $1.9 billion,16% of revenue, inclusive of CAF Phase 2 related capital expenditures but exclusive of additional capital expenditures with respect to Level 3's operations that we expect to acquire later this year.and integration capital.
Our capital expenditures continue to be focused on our strategic services.keeping the network operating efficiently and supporting new service developments. For more information on our capital spending, see "Historical Information—Investing Activities" below and Item 1 of Part I of our annual report on Form 10-K for the year ended December 31, 2016.2017.
Debt and Other Financing Arrangements
On May 4, 2017, Qwest Corporation redeemed all $500 million of its 6.5% Notes due 2017, which resulted in an immaterial loss.
On April 27, 2017, Qwest Corporation issued $575 million aggregate principal amount of 6.75% Notes due 2057 in exchange for net proceeds, after deducting underwriting discounts and other expenses, of $555 million. All of the 6.75% Notes are unsecured obligations and may be redeemed by Qwest Corporation, in whole or in part, on or after June 15, 2022, at a redemption price equal to 100% of the principal amount redeemed plus accrued and unpaid interest to the redemption date.
On April 3, 2017, CenturyLink, Inc. paid at maturity the $500 million principal and accrued and unpaid interest due under its 6.00% Notes.
Subject to market conditions, we expect to continue to issue debt securities from time to time in the future to refinance a substantial portion of our maturing debt, including issuing Qwest Corporation and Level 3 Financing, Inc. debt securities to refinance itstheir maturing debt to the extent feasible. The availability, interest rate and other terms of any new borrowings will depend on the ratings assigned to us and Qwest Corporation by credit rating agencies, among other factors.
Following the closing of our acquisition of Level 3, the rating agencies took action on the ratings of the debt in the table below. Generally, the agencies downgraded ratings of the CenturyLink, Inc. debt from previous levels as they indicated they intended to at the time of the announcement of the transaction. Additionally, Standard and Poor's and Moody's Investors Service, Inc. placed such ratings on negative outlook while Fitch Ratings placed them on stable outlook. As for the Level 3 debt, Moody's Investors Service, Inc. upgraded the unsecured debt and affirmed the rating of the secured debt, with all ratings placed on negative outlook. Standard and Poor's affirmed all previous Level 3 ratings with negative outlook, and Fitch Ratings affirmed all previous Level 3 ratings with stable outlook.

As of the date of this report, the credit ratings for the senior unsecured debt of CenturyLink, Inc., Qwest Corporation, Level 3 Parent, LLC and Qwest CorporationLevel 3 Financing, Inc. were as follows:
AgencyBorrower CenturyLink, Inc.Qwest Corporation
Standard & Poor'sBBBBB-
Moody's Investors Service, Inc. Standard & Poor'sFitch Ratings
CenturyLink, Inc.:
UnsecuredB2B+BB
SecuredBa3BBB-BB+
Qwest Corporation:
UnsecuredBa2BBB-BB+
Level 3 Parent, LLC:
UnsecuredB1B+BB-
Level 3 Financing, Inc.
UnsecuredBa3BBBB
Secured Ba1
Fitch Ratings BB+BBB- BBB-
Our credit ratings are reviewed and adjusted from time to time by the rating agencies, andagencies. Any future downgrades of CenturyLink, Inc.'sthe senior unsecured or secured debt ratings could, under certain circumstances, incrementally increase the cost of us or our borrowing under the Credit Facility. Moreover, any additional downgrades of CenturyLink, Inc.'s or Qwest Corporation's senior unsecured debt ratingssubsidiaries could impact our access to debt capital or further raise our borrowing costs. See "Risk Factors—Risks Affecting our Liquidity and Capital Resources" in Item 1A of Part II of this report.
Following the announcementI of our pending acquisition of Level 3, Standard & Poor's indicated that CenturyLink, Inc.'s current unsecured senior debt rating of BB has been placedannual report on watch with negative implications, Moody’s Investors Service, Inc. indicated that CenturyLink, Inc.'s current senior unsecured debt rating of Ba3 has been placed on reviewForm 10-K for downgrade and Fitch Ratings indicated that CenturyLink, Inc.'s current unsecured senior debt rating of BB+ has been placed on negative watch. Additionally, Qwest Corporation's current unsecured senior debt rating of Ba1 has been placed on review for downgrade by Moody's Investors Service, Inc. and its current unsecured senior debt rating of BBB- has been placed on negative watch by Fitch Ratings. It is expected that any downgrades would be made only following the completion of the Level 3 acquisition.

year ended December 31, 2017.
Net Operating Loss Carryforwards
In recent years, we have been using Net Operating Loss ("NOL") carryforwards to offset a large portion of our federal taxable income. As of December 31, 2016,2017, CenturyLink had approximately $9.1 billion of net operating loss carryforwards. ("NOLs"), which for U.S. federal income tax purposes can be used to offset future taxable income. These NOLs are primarily related to federal NOLs we have substantially utilized our federal NOL carryforwards. A portion of these remaining NOL carryforwardsacquired through the Level 3 acquisition on November 1, 2017, and are subject to theprior limitations imposed by sectionunder Section 382 of the Internal Revenue Code ("Code"). As and related U.S. Treasury Department regulations. Additionally, these NOLs are subject to a current Section 382 limitation as a result of the substantial utilizationour acquisition of the NOL carryforwards in prior years and the limitations imposed on portions of the remaining NOL carryforward balance,Level 3. Prior to this acquisition, the amounts of our cash flows dedicated to or required for the payment of federal taxes has increased and is expectedsubstantially in 2017. As a result of the completion of this acquisition we expect to continuesignificantly reduce our federal cash taxes for the next several years. Additionally, we requested a significant refund of federal income taxes related to increase substantially during 2017 prior to our anticipated acquisitionthat was received in the second quarter of additional NOLs later this year in connection with the Level 3 acquisition, as described further below.2018. The amounts of our near-term future tax payments will depend upon many factors, including our future earnings and tax circumstances. Based on current laws (including the extensioncircumstances and results of bonus depreciation) and our current estimates of 2017 earnings, we estimate our cash incomeany corporate tax liability related to 2017 will be between $400 million to $500 million, exclusive of (i) tax payments relating to the sale of our data centers and colocation business of approximately $75 million to $150 million and (ii) the impact of acquiring Level 3.reform.
Based on information publicly available, as of December 31, 2016, Level 3 had approximately $9.0 billion of NOL carryforwards that we expect to acquire in connection with the Level 3 transaction. We cannot assure you that we will be able to use these NOL carryforwards fully. See "Risk Factors—Risk Relating to Our PendingRecently-Completed Acquisition of Level 3—We cannot assure you, whether, when or in what amounts we will be able to use Level 3's net operating loss carryforwards following the Level 3 acquisition"carryforwards" in Item 1A of Part III of this report.our annual report on Form 10-K for the year ended December 31, 2017.
Dividends
We currently expect to continue our current practice of paying quarterly cash dividends in respect of our common stock subject to our Board of Directors' discretion to modify or terminate this practice at any time and for any reason without prior notice. Our current quarterly common stock dividend rate is $0.54 per share, as approved by our Board of Directors, which we believe is a dividend rate per share that giveswhich enables us the flexibility to balance our multiple objectives of managing our business, paying our fixed commitments and returning a substantial portion of our cash to our shareholders. Assuming continued payment during 20172018 at this rate of $0.54 per share, our average total dividendsdividend paid each quarter prior towould be approximately $576 million based on the number of our outstanding shares at March 31, 2018.

Revolving Facilities and Other Debt Instruments
To substantially fund our recent acquisition of Level 3, on June 19, 2017, one of our affiliates entered into a credit agreement (the "2017 CenturyLink Credit Agreement") providing for $9.945 billion in senior secured credit facilities, consisting of a new $2.0 billion revolving credit facility (which replaced our 2012 credit facility upon consummation of the Level 3 acquisition) and $7.945 billion of term loan facilities, of which approximately $6.0 billion were funded into escrow on such date, and $1.945 billion of which were funded upon the closing of the acquisition would be $293on November 1, 2017. On November 1, 2017, CenturyLink, Inc. also, among other things, (i) assumed all rights and obligations under the 2017 CenturyLink Credit Agreement, (ii) borrowed $400 million based onunder the new $2.0 billion revolving credit facility and (iii) received $6.0 billion of Term Loan B loan proceeds from escrow. On January 29, 2018, the 2017 CenturyLink Credit Agreement was amended to increase the borrowing capacity of the new revolving credit facility from $2.0 billion to $2.168 billion, and to increase the borrowing capacity under one of the term loan tranches by $132 million. For additional information, see (i) Note 5—Long-Term Debt and Credit Facilities to our consolidated financial statements in Item 1 of Part I of this report, (ii) our current number of outstanding shares (which does not reflect shares that we expect to issue in connectionreport on Form 8-K filed with the Level 3 acquisition or any other shares thatSEC on June 20, 2017 and (iii) our current report on Form 8-K filed with the SEC on November 1, 2017.
On November 1, 2017, we might issue or repurchase in future periods). See "Risk Factors—Risks Affecting Our Business" in Item 1Aalso amended our uncommitted revolving letter of Part II of this report.
Credit Facility
Our $2 billion Credit Facility matures on December 3, 2019credit facility to secure the facility and has 16 lenders, each with commitments ranging from $3.5 million to $198.5 million. The Credit Facility allowspermit us to obtain revolving loans and to issuedraw up to $400$225 million of letters of credit which upon issuance reduces the amount available for other extensions of credit. Interest is assessed on borrowings using either the LIBOR or the base rate (each as defined in the Credit Facility) plus an applicable margin between 1.00% and 2.25% per annum for LIBOR loans and 0.00% and 1.25% per annum for base rate loans depending on our then current senior unsecured long-term debt rating. Our obligations under the Credit Facility are guaranteed by nine of our subsidiaries.thereunder. At March 31, 2017,2018, we had $375$121 million in borrowings and no amounts of letters of credit outstanding under the Credit Facility.
Under the Credit Facility, we, and our indirect subsidiary, Qwest Corporation, must maintain a debt to EBITDA (earnings before interest, taxes, depreciation and amortization, as defined in our Credit Facility) ratio of not more than 4.0:1.0 and 2.85:1.0, respectively, as of the last day of each fiscal quarter for the four quarters then ended. The Credit Facility also contains a negative pledge covenant, which generally requires us to secure equally and ratably any advances under the Credit Facility if we pledge assets or permit liens on our property for the benefit of other debtholders. The Credit Facility also has a cross payment default provision, and the Credit Facility and certain of our debt securities also have cross acceleration provisions. When present, these provisions could have a wider impact on liquidity than might otherwise arise from a default or acceleration of a single debt instrument. Our debt to EBITDA ratios could be adversely affected by a wide variety of events, including unforeseen expenses or contingencies. This could reduce our financing flexibility due to potential restrictions on incurring additional debt under certain provisions of our debt agreements or, in certain circumstances, could result in a default under certain provisions of such agreements.
Term Loans and Revolving Letter of Credit
At March 31, 2017, CenturyLink, Inc. owed $330 million under a term loan maturing in 2019 and Qwest Corporation owed $100 million under a term loan maturing in 2025. Both of these term loans include covenants substantially similar to those set forth in the Credit Facility.

We have a $160 million uncommitted revolving letter of credit facility which enables us to provide letters of credit under terms that may be more favorable than those under the Credit Facility. At March 31, 2017, our outstanding letters of credit totaled $106 million under this facility.
For information on the terms and conditions of other debt instruments of ours and our outstanding debt securities,subsidiaries, including financial and operating covenants, see Note 4—5—Long-Term Debt and Credit Facilities to our consolidated financial statements in Item 1 of Part I of this report.
Level 3 Financing Commitment Letter
In connection with entering into our merger agreement with Level 3, we obtained a commitment letter from a group of lenders to provide debt financing to us under certain conditions. See Note 4—Long-Term Debt and Credit Facilities to our consolidated financial statements in Item 8 of Part II of our annual report on Form 10-K for the year ended December 31, 2016.    
Pension and Post-retirement Benefit Obligations
We are subject to material obligations under our existing defined benefit pension plans and post-retirement benefit plans. At December 31, 2016,2017, the accounting unfunded status of our qualified and non-qualified defined benefit pension plans and qualified post-retirement benefit plans was $2.409$2.062 billion and $3.360$3.352 billion, respectively. See Note 9—Employee Benefits to our consolidated financial statements in Item 8 of Part II of our annual report on Form 10-K for the year ended December 31, 20162017 for additional information about our pension and post-retirement benefit arrangements.
Benefits paid by our qualified pension plan are paid through a trust that holds all of the plan's assets. Based on current laws and circumstances, we do not expect any contributions to be required for our qualified pension plan during the remainder of 2017.2018. The amount of required contributions to our qualified pension plan in 20182019 and beyond will depend on a variety of factors, most of which are beyond our control, including earnings on plan investments, prevailing interest rates, demographic experience, changes in plan benefits and changes in funding laws and regulations. We occasionally make voluntary contributions in addition to required contributions. We currently expect to makemade a voluntary contribution of $100 million to the trust for our qualified pension plan during 2017. Based on current circumstances, we currently anticipate making a voluntary contribution of $100 million to the remaining nine months of 2017.trust for our qualified pension plan in 2018.
Substantially all of our post-retirement health care and life insurance benefits plans are unfunded. Several trusts hold assets that have been used to help cover the health care costs of certain retirees. AssetsAs of December 31, 2017, assets in the post-retirement trusts havehad been substantially depleted asand had a fair value of December 31, 2016;$23 million (a portion of which was comprised of investments with restricted liquidity), which has significantly limited our ability to continue paying benefits from the trusts; however, we will continue to pay certain benefits through the trusts. The fair value of these trust assets was $53 million at December 31, 2016, with a portion comprised of investments with restricted liquidity. Benefits not paid throughfrom the trusts are expected to be paid directly by us.us with available cash. As described further in Note 9—6—Employee Benefits to our consolidated financial statements in Item 8 of Part II of our most recent annual report on Form 10-K, aggregate benefits paid by us under these plans (net of participant contributions and direct subsidy receipts) were $237 million, $129 million $116 million and $88$116 million for the years ended December 31, 2017, 2016 2015 and 2014,2015, respectively, while the amounts paid from the trust were $31 million, $145 million $163 million and $219$163 million, respectively. For additional information on our expected future benefits payments for our post-retirement benefit plans, please see Note 9—Employee Benefits to our consolidated financial statements in Item 8 of Part II of our annual report Form 10-K.10-K for the year ended December 31, 2017.
For 2017,2018, our estimated annual long-term rates of return are 6.5% and 5.0%4.0% for the pension plan trust assets and post-retirement plans trust assets, respectively, based on the assets currently held. However, actual returns could be substantially different.
Future Contractual Obligations
For information regarding our estimated future contractual obligations, see the MD&A discussion included in Item 7 of Part II of our annual report on Form 10-K for the year ended December 31, 2016.2017.
Workforce Reductions
In response to the continued decline of our legacy services revenues and to better align our workforce with our workload requirements, we periodically implement workforce reduction programs. In the third quarter of 2016, we announced plans to reduce our workforce, initially through voluntary severance packages and the balance through involuntary reductions. The payments of severance benefits to terminated employees began in the fourth quarter of 2016 and continued through the first quarter of 2017. We made severance and other one-time termination benefit payments of $74 million in the first quarter of 2017 associated with the 2016 workforce reduction plan and additional customary workforce reductions.
Connect America Fund
As a result of accepting CAF Phase 2 support payments, forwe must meet certain specified infrastructure buildout requirements in 33 states over the next several years. In order to meet these specified infrastructure buildout requirements, we willmay be obligated to make substantial capital expenditures to build broadband infrastructure over the next several years.expenditures. See "Capital Expenditures" above.

For additional information on the FCC's CAF order and the USF program, see "Business—Regulation" in Item 1 of Part I of our annual report on Form 10-K for the year ended December 31, 20162017 and see "Risk Factors—Risks Affecting our Liquidity and Capital Resources" in Item 1A of Part III of this report.
In 2013, underour annual report on Form 10-K for the CAF Phase 1 Round 2 program, we received $40 million in funding for deployment of broadband services in rural areas. In compliance with program terms, during the second half of 2016 we returned $23 million for failing to meet interim buildout milestones within the FCC specified time frames. As of Marchyear ended December 31, 2017, we have included $16 million of funding in deferred credits and other liabilities - other on our consolidated balance sheet. At the conclusion of the CAF 1 Round 2 program in the second quarter of 2017, we will have an opportunity to reclaim a significant portion of the interim refund if we ultimately meet the CAF 1 Round 2 buildout targets.2017.
Historical Information
The following table summarizes our consolidated cash flow activities:
Three Months Ended March 31,  Increase /
(Decrease)
Three Months Ended March 31,  Increase /
(Decrease)
2017 2016 2018 2017 
(Dollars in millions)(Dollars in millions)
Net cash provided by operating activities$1,057
 1,423
 (366)$1,667
 1,057
 610
Net cash used in investing activities(732) (605) 127
(768) (732) 36
Net cash used in financing activities(333) (506) (173)(948) (333) 615
Operating Activities
Net cash provided by operating activities decreasedincreased by $366$610 million for the three months ended March 31, 20172018 as compared to the three months ended March 31, 20162017 primarily due to negative variancesthe increase in other current assets and liabilities, net, accounts payable and net income adjusted for non-cash items which were partially offset withand the positive variances in accounts receivable andimpact from changes in other noncurrent current assets and liabilities, net.liabilities. Cash provided by operating activities is subject to variability period over period as a result of the timing of the collection of receivables and payments related to interest expense, accounts payable, and bonuses.
Investing Activities
Net cash used in our investing activities increased by $127$36 million for the three months ended March 31, 20172018 as compared to the three months ended March 31, 2016 substantially2017 primarily due to an increase in payments forhigher purchases of property plant and equipment.equipment and reduced proceeds from asset sales, as partially offset by deposits received in the first quarter of 2018 from assets held for sale.
Financing Activities
Net cash used infrom our financing activities decreasedincreased by $173$615 million for the three months ended March 31, 20172018 as compared to the three months ended March 31, 20162017 primarily due to a substantial reductionan increase in net paydownspayments on theour revolving credit facility and revolving linean increase in dividends paid. For more information, see Note 5-Long-Term Debt and Credit Facilities.
On January 29, 2018, the 2017 CenturyLink Credit Agreement was amended to:
Add a lender to the 2017 Revolving Credit Facility and to increase CenturyLink, Inc.’s borrowing capacity thereunder to approximately $2.168 billion; and
Add a lender to the Term Loan A credit facility and to increase CenturyLink, Inc.’s borrowing capacity thereunder to approximately $1.707 billion.
In connection with this amendment, the new lender provided approximately $132 million of credit,Term Loan A loan proceeds, which was partially offset byCenturyLink used, together with available cash, to reduce its borrowings under the 2017 Revolving Credit Facility.
On January 21, 2018, a reductionsubsidiary of Embarq Corporation redeemed all $13 million of its 8.77% Notes due 2019, which resulted in the net proceeds received from the issuance of long-term debt.an immaterial loss.
See Note 4—5—Long-Term Debt and Credit Facilities to our consolidated financial statements in Item 1 of Part I of this report for additional information on our outstanding debt securities.

Other Matters
In February 2015,Recent Tax Changes
On December 22, 2017, the FCC adopted new regulationsTax Cuts and Jobs Act (the "Act") was signed into law and in December 2017, the SEC staff issued Staff Accounting Bulletin (SAB) 118 to provide guidance for companies that regulate broadband services as a public utility service under Title IIhave not completed their accounting for the income tax effects of the CommunicationsAct. As of March 31, 2018, we have not completed our accounting for the tax effects of the Act. In light of pending litigation and changes inorder to complete our accounting for the composition of the FCC, we believe it is premature for us to determine the ultimate impact of the new regulations onAct, we continue to obtain, analyze and interpret additional guidance as such guidance becomes available from the U.S. Treasury Department, the Internal Revenue Service (“IRS”), state taxing jurisdictions, the FASB, and other standard-setting and regulatory bodies. New guidance or interpretations may materially impact our operations. For additionalprovision for income taxes in future periods.
Additional information see “Risk Factors—Risks Relatingthat is needed to Legalcomplete the analysis but is currently unavailable includes, but is not limited to, the amount of earnings of foreign subsidiaries, the final determination of certain net deferred tax assets subject to remeasurement due to purchase accounting adjustments and Regulatory Matters” in Item 1Aother matters, and the tax treatment of Part II of this report.
CenturyLink, Inc. has cash management arrangements with certain of its principal subsidiaries, in which substantial portionssuch provisions of the subsidiaries' cash is regularly advancedAct by various state tax authorities. We have provisionally recognized the tax impacts related to it. Although CenturyLink, Inc. periodically repays these advancesthe re-measurement of deferred tax assets and liabilities. The ultimate impact may differ from our provisional amount due to fundadditional analysis, changes in interpretations and assumptions we have made, additional regulatory guidance that may be issued, and actions we may take as a result of the subsidiaries' cash requirements throughoutAct. The change from our current provisional estimates will be reflected in our future statements of operations and could be material. We expect to complete the accounting by the time we file our 2017 U.S. corporate income tax return in the fourth quarter of 2018, although we cannot assure you of this.
The Act reduced the U.S. corporate income tax rate from a maximum of 35% to 21% for all C corporations, effective January 1, 2018, and made certain changes to U.S. taxation of income earned by foreign subsidiaries, capital expenditures and various other items. As a result of the reduction in the U.S. corporate income tax rate from 35% to 21%, we provisionally re-measured our net deferred tax liabilities at December 31, 2017 and recognized a tax benefit of approximately $1.1 billion in our consolidated statement of operations for the year atended December 31, 2017. During the first three months of 2018, we reduced this $1.1 billion tax benefit of tax reform by $64 million due to changes in certain purchase accounting adjustments related to the Level 3 acquisition, which was reflected in income tax expense.
The Act imposed a one-time repatriation tax on certain earnings of foreign subsidiaries. Although we have not determined a reasonable estimate of the impact of the one-time repatriation tax, we do not expect this one-time tax to materially impact us, but we cannot provide any given pointassurance that upon completion of the analysis the amount will not be material.
Because of our net operating loss carryforwards, we do not expect to experience a further material immediate reduction in time itthe amount of cash income taxes paid by us. However, we anticipate that the provisions of the Act may owe a substantial sum to its subsidiaries under these advances, which,reduce our cash income taxes in accordance with generally accepted accounting principles, are eliminated in consolidation and therefore not recognized on our consolidated balance sheets.future years.
We also are involved in various legal proceedings that could substantially impact our financial position. See Note 10—Commitments and Contingencies to our consolidated financial statements in Item 1 of Part I of this report for the current status of such legal proceedings.

Market Risk
We areAs of March 31, 2018, we were exposed to market risk from changes in interest rates on our variable rate long-term debt obligations and fluctuations in certain foreign currencies. We seek to maintain a favorable mix of fixed and variable rate debt in an effort to limit interest costs and cash flow volatility resulting from changes in rates.
Management periodically reviews our exposure to interest rate fluctuations and periodically implements strategies to manage the exposure. From time to time, we have used derivative instruments to (i) lock-in or swap our exposure to changing or variable interest rates for fixed interest rates or (ii) to swap obligations to pay fixed interest rates for variable interest rates. As of March 31, 2017,2018, we had no such instruments outstanding. We have established policies and procedures for risk assessment and the approval, reporting and monitoring of derivative instrument activities. We doAs of March 31, 2018, we did not hold or issue derivative financial instruments for trading or speculative purposes.
As further discussed in Note 5—Long-Term Debt and Credit Facilities, on June 19, 2017, and on November 1, 2017, we borrowed substantial sums under a credit agreement dated June 19, 2017 with various lending institutions to provide a substantial amount of the funding for the Level 3 acquisition. As further noted in Note 5—Long-Term Debt and Credit Facilities, loans under the term loan facilities and new revolving credit facility under the June 19, 2017 credit agreement bear interest at floating rates.

By operating internationally, we are exposed to the risk of fluctuations in the foreign currencies used by our international subsidiaries, primarilyincluding the British Pound, and secondarilythe Euro, the Brazilian Real, the Canadian Dollar, the Japanese Yen, the Hong Kong Dollar and the Singapore Dollar.Dollar, in each case as of March 31, 2018. Although the percentages of our consolidated revenues and costs that are denominated in these currencies are immaterial, futureour consolidated results of operations could be adversely impacted by volatility in exchange rates andor an increase in the number of foreign currency transactions, could adversely impactwhich substantially increased upon the consummation of our consolidated resultsacquisition of operations.
Level 3 discussed elsewhere herein. We do not believe that there were any material changesuse a sensitivity analysis to market risksestimate our exposure to this foreign currency risk, measuring the change in financial position arising from changesa hypothetical 10% change in interestthe exchange rates or fluctuations in foreignof these currencies, for the three months ended March 31, 2017, when comparedrelative to the disclosures provided in our annual report on Form 10-K for the year ended December 31, 2016.U.S. dollar, with all other variables held constant.
Certain shortcomings are inherent in the method of analysis presented in the computation of exposures to market risks. Actual values may differ materially from those disclosed by us from time to time if market conditions vary from the assumptions used in the analyses performed. These analyses only incorporate the risk exposures that existed at March 31, 2017.2018.
Off-Balance Sheet Arrangements
We haveAs of March 31, 2018, we had no special purpose or limited purpose entities that provide off-balance sheet financing, liquidity, or market or credit risk support and we dodid not engage in leasing, hedging, or other similar activities that expose us to any significant liabilities that are not (i) reflected on the face of the consolidated financial statements, (ii) disclosed in Note 16—Commitments and Contingencies to our consolidated financial statements in Item 8 of Part II of our annual report on Form 10-K for the year ended December 31, 2016,2017, or in the Future Contractual Obligations table included in Item 7 of Part II of the same report, or (iii) discussed under the heading "Market Risk" above.
Other Information
Our website is www.centurylink.com. We routinely post important investor information in the "Investor Relations" section of our website at ir.centurylink.com. The information contained on, or that may be accessed through, our website is not part of this quarterly report. You may obtain free electronic copies of our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and all amendments to those reports in the "Investor Relations" section of our website (ir.centurylink.com) under the heading "SEC Filings." These reports are available on our website as soon as reasonably practicable after we electronically file them with the Securities and Exchange Commission ("SEC").SEC. From time to time, we also use our website to webcast our earnings calls and certain of our meetings with investors or other members of the investment community.

In addition to historical information, this quarterly report includes certain forward-looking statements that are based upon our judgment and assumptions as of the date of this report concerning future developments and events, many of which are beyond our control. These forward-looking statements, and the assumptions upon which they are based, are not guarantees of future results, are inherently speculative and are subject to a number of risks and uncertainties. Actual events and results may differ materially from those anticipated, estimated, projected or implied by us in those statements if one or more of these risks or uncertainties materialize, or if underlying assumptions prove incorrect. Factors that could affect actual results include but are not limited to: the effects of competition from a wide variety of competitive providers, including decreased demand for our legacy offerings and increased pricing pressures; the effects of new, emerging or competing technologies, including those that could make our products less desirable or obsolete; the effects of ongoing changes in the regulation of the communications industry, including the outcome of regulatory or judicial proceedings relating to intercarrier compensation, interconnection obligations, access charges, universal service, broadband deployment, data protection and net neutrality; our ability to successfully complete our pending acquisition of Level 3, including the timely receipt of all requisite financing and all regulatory approvals free of any detrimental conditions, and to timely realize the anticipated benefits of the transaction, including our ability to attain anticipated cost savings, to use Level 3’s net operating losses in the amounts projected, to retain key personnel and to avoid unanticipated integration disruptions; our ability to effectively adjust to changes in the communications industry and changes in the composition of our markets and product mix; possible changes in the demand for our products and services, including our ability to effectively respond to increased demand for high-speed broadband service; our ability to successfully maintain the quality and profitability of our existing product and service offerings, to provision them efficiently to our customers, and to introduce new offerings on a timely and cost-effective basis; the adverse impact on our business and network from possible equipment failures, service outages, security breaches or similar events impacting our network; our ability to generate cash flows sufficient to fund our financial commitments and objectives, including our capital expenditures, operating costs, periodic share repurchases, dividends, pension contributions and other benefits payments, and debt repayments; changes in our operating plans, corporate strategies, dividend payment plans or other capital allocation plans, whether based upon changes in our cash flows, cash requirements, financial performance, financial position, market conditions or otherwise; our ability to effectively retain and hire key personnel and to successfully negotiate collective bargaining agreements on reasonable terms without work stoppages; increases in the costs of our pension, health, post-employment or other benefits, including those caused by changes in markets, interest rates, mortality rates, demographics or regulations; adverse changes in our access to credit markets on favorable terms, whether caused by changes in our financial position, lower debt credit ratings, unstable markets or otherwise; our ability to maintain favorable relations with our key business partners, suppliers, vendors, landlords and financial institutions; our ability to effectively manage our network buildout project and our other expansion opportunities; our ability to collect our receivables from financially troubled customers; any adverse developments in legal or regulatory proceedings involving us; changes in tax, communications, pension, healthcare or other laws or regulations, in governmental support programs, or in general government funding levels; the effects of changes in accounting policies or practices, including potential future impairment charges; the effects of adverse weather or other natural or man-made disasters; the effects of more general factors such as changes in interest rates, in operating costs, in general market, labor, economic or geo-political conditions, or in public policy; and other risks referenced in Item 1A or elsewhere in this quarterly report or other of our filings with the SEC. You should be aware that new factors may emerge from time to time and it is not possible for us to identify all such factors nor can we predict the impact of each such factor on the business or the extent to which any one or more factors may cause actual results to differ from those reflected in any forward-looking statements. Given these uncertainties, we caution investors not to unduly rely upon our forward-looking statements. We undertake no obligation to publicly update or revise any forward-looking statements for any reason, whether as a result of new information, future events or developments, changed circumstances, or otherwise. Furthermore, any information about our intentions contained in any of our forward-looking statements reflects our intentions as of the date of this report, and is based upon, among other things, existing regulatory, technological, industry, competitive, economic and market conditions, and our assumptions as of such date. We may change our intentions, strategies or plans (including our dividend or stock repurchase plans) at any time and without notice, based upon any changes in such factors, in our assumptions or otherwise.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
See "Liquidity and Capital Resources—Market Risk" in Item 2 of Part I above for quantitative and qualitative disclosures about market risk.
ITEM 4. CONTROLS AND PROCEDURES
Disclosure Controls and Procedures
The Company maintains disclosure controls and procedures (as defined in Rule 13a-15(e) promulgated under the Securities Exchange Act of 1934 (the “Exchange Act”)) designed to provide reasonable assurance that the information required to be disclosed by the Company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms. These include controls and procedures designed to ensure that this information is accumulated and communicated to the Company’s management, including its Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure. Management, with the participation of our Chief Executive Officer, Glen F. Post, III, and our Chief Financial Officer, R. Stewart Ewing, Jr.,Sunit S. Patel, evaluated the effectiveness of the Company’s disclosure controls and procedures as of March 31, 2017.2018. Based on this evaluation, the Company’s Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective, as of March 31, 2017,2018, in providing reasonable assurance that the information required to be disclosed by us in this report was accumulated and communicated in the manner provided above.
The effectiveness of our or any system of disclosure controls and procedures is subject to certain limitations, including the exercise of judgment in designing, implementing and evaluating the controls and procedures, the assumptions used in identifying the likelihood of future events and the inability to eliminate misconduct completely. As a result, there can be no assurance that our disclosure controls and procedures will detect all errors or fraud. By their nature, our or any system of disclosure controls and procedures can provide only reasonable assurance regarding management's control objectives.
Changes in Internal Control Over Financial Reporting
ThereBeginning January 1, 2018, we adopted Accounting Standards Codification (ASC) 606, Revenue from Contracts with Customers. We implemented internal controls to ensure we adequately evaluated our contracts and properly assessed the new accounting standard related to revenue recognition on our consolidated financial statements.

CenturyLink completed the acquisition of Level 3, Inc. on November 1, 2017. The Company is currently integrating policies, processes, people, technology, and operations of the combined Company. Management will continue to evaluate the Company's internal controls over financial reporting as it continues the integration of Level 3. Other than the internal controls related to the adoption of ASC606 referenced above there were no changes in ourthe Company's internal control over financial reporting that occurred during the first quarter of 20172018 that have materially affected, or that we believe are reasonably likely to materially affect, ourthe Company's internal control over financial reporting.


PART IIOTHER INFORMATION
ITEM 1. LEGAL PROCEEDINGS
The information contained in Note 10—11—Commitments and Contingencies included in Item 1 of Part I of this report is incorporated herein by reference.
ITEM 1A. RISK FACTORS
The following discussion identifies the most significantOur operations and financial results are subject to various risks orand uncertainties, thatwhich could (i) materially and adversely affect our business, financial condition results of operations, liquidity or prospects or (ii) cause our actual results to differ materially from our anticipated results or other expectations. The following information should be read in conjunction with the other portions of this report, including “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Item 2 of Part 1 and our consolidated financial statements and related notes in Item 1 of Part 1. Please note that the following discussion is not intended to comprehensively list all risks or uncertainties faced by us. Our operations or actual results could also be similarly impacted by additional risks and uncertainties that are not currently known to us, that we currently deem to be immaterial, that arise in the future or that are not specific to us, such as general economic conditions.
Risks Affecting Our Business
We may not be able to compete successfully against current or future competitors.
Each of our offerings to our residential and business customers face increasingly intense competition from a variety of sources under evolving market conditions. We expect these trends will continue.results. In addition to competition from larger national telecommunications providers, we are facing increasing competition from severalthe other sources, including cable and satellite companies, wireless providers, technology companies, cloud companies, broadband providers, device providers, resellers, sales agents and facilities-based providers using their own networks as well as those leasing partsinformation set forth in this report, you should carefully consider the risk factors discussed in Part I, Item 1A of our network. In particular, (i) intense competition from wireless and other communications providers has led to a long-term systemic decline in the number of our wireline voice customers, (ii) strong competition from cable companies and others has impacted the growth of our broadband operations and (iii) aggressive competition from a wide range of technology companies and other market entrants has limited the prospects for our cloud computing operations. For more detailed information, see "Business—Competition" in Item 1 of Part I of our annual reportAnnual Report on Form 10-K for the year ended December 31, 2016.
Some of our current and potential competitors (i) offer products or services that are substitutes for our legacy wireline voice services, including wireless voice and non-voice communication services, (ii) offer a more comprehensive range of communications products and services, (iii) offer products or services with features that we cannot readily match in some or all of our markets, (iv) offer shorter installation intervals, allowing customers to begin receiving services sooner after ordering, (v) have greater marketing, engineering, research, development, technical, financial and other resources, (vi) have larger or more diverse networks with greater transmission capacity, (vii) conduct operations or raise capital at a lower cost than us, (viii) are subject to less regulation, which we believe enables such competitors to operate more flexibly than us with respect to certain offerings, (ix) offer services nationally or internationally to a larger geographic area or larger base of customers, (x) have substantially stronger brand names, which may provide them with greater pricing power than ours, or (xi) have larger operations than ours, which may enable them to compete more successfully in recruiting top talent, entering into operational or strategic partnerships or acquiring companies. Consequently, these competitors may be better equipped to provide more attractive offerings, to charge lower prices for their products and services, to develop and expand their communications and network infrastructure more quickly, to adapt more swiftly to changes in technologies or customer requirements, to devote greater resources to the marketing and sale of their products and services, to provide more comprehensive customer service, to provide greater resources to research and development initiatives and to take advantage of business or other opportunities more readily. In the past, several of our competitors and their operations have grown through acquisitions and aggressive product development. The continued growth of our competitors could further enhance their competitive positions.
Competition could adversely impact us in several ways, including (i) the loss of customers and market share, (ii) the possibility of customers terminating or reducing their usage of our services or shifting to less profitable services, (iii) reduced traffic on our networks, (iv) our need to expend substantial time or money on new capital improvement projects, (v) our need to lower prices or increase marketing expenses to remain competitive and (vi) our inability to diversify by successfully offering new products or services.
We are continually taking steps to respond to these competitive pressures, but these efforts may not be successful. Our operating results and financial condition would be adversely affected if these initiatives are unsuccessful or insufficient. If this occurred, our ability to pay our debt and other obligations and to re-invest in the business would also be adversely affected.

Rapid technological changes could significantly impact our competitive and financial position.
The communications industry has been and continues to be impacted by significant technological changes, which in general are enhancing wireless services and enabling a broader array of companies to compete with us. Many of these technological changes are (i) enabling customers to reduce or bypass use of our networks, (ii) displacing or reducing demand for our services, or (iii) enabling the development of competitive products or services. For years, improvements in wireless and Internet-based voice communications technologies have reduced demand for our legacy voice services, and these trends continue. More recently, continuous improvements in wireless data technologies have enabled wireless carriers to offer competing products, and we expect this trend to continue as technological advances enable these carriers to carry greater amounts of data faster and with less latency. Technological advancements have also permitted cable companies and other of our competitors to deliver faster average broadband transmission speeds than ours. Rapid changes in technology have also placed competitive pressures on our video, cloud and hosting businesses, and enabled new competitors to enter our markets. To enhance the competitiveness of certain of our services, we will likely be required to spend additional capital to install more fiber optic cable or to augment the capabilities of our copper-based services.
We may not be able to accurately predict or respond to changes in technology or industry standards, or to the introduction of newly-offered services. Any of these developments could make some or all of our offerings less desirable or even obsolete, which would place downward pressure on our market share and revenues. These developments could also require us to (i) expend capital or other resources in excess of currently contemplated levels, (ii) forego the development or provision of products or services that others can provide more efficiently, or (iii) make other changes to our operating plans, corporate strategies or capital allocation plans, any of which could be contrary to the expectations of our security holders or could adversely impact our operations. Our inability to effectively respond to technological changes could adversely affect our operating results and financial condition, as well as our ability to service debt and fund other commitments or initiatives.
Even if we succeed in adapting to changes in technology or industry standards by developing new products or services, there is no assurance that the new products or services would have a positive impact on our profit margins or financial performance.
In addition to introducing new technologies and offerings, we may need, from time to time, to phase out outdated and unprofitable technologies and services. If we are unable to do so on a cost-effective basis, we could experience reduced profits.
For additional information on the risks of increased expenditures, see “Risk Factors—Risks Affecting our Liquidity and Capital Resources—Our business requires us to incur substantial capital and operating expenses, which reduces our available free cash flow.”
Our legacy services continue to experience declining revenues, and our efforts to offset these declines may not be successful.
Primarily as a result of the competitive and technological changes discussed above, we have experienced a prolonged systemic decline in our local voice, long-distance voice, network access, private line and other legacy revenues. Consequently, we have experienced lower consolidated revenues in each of our last several years.
We have taken a variety of steps to counter these declines in our legacy services revenues, including:
an increased focus on selling a broader range of higher-growth strategic services, which are described in detail elsewhere in this report;
an increased focus on serving a broader range of business, governmental and wholesale customers;
greater use of service bundles; and
acquisitions to increase our scale, enhance our business segment and strengthen our product offerings.
However, for the reasons described elsewhere in this report, most of our strategic services generate lower profit margins than our legacy services, and some can be expected to experience slowing growth as increasing numbers of our existing or potential customers subscribe to our newer strategic product and service offerings. Moreover, we cannot assure you that the revenues generated from our new offerings will offset revenue losses associated with our legacy services. In addition, our reliance on third parties to provide certain of these strategic services could constrain our flexibility, as described further below.

Our failure to develop new products and services could adversely impact our competitive position.
In order to compete effectively and respond to the changing communication needs of our customers, we continuously develop, test and introduce new products and services. Our ability to successfully introduce new product or service offerings on a timely and cost-effective basis could be constrained by a range of factors, including network limitations, support system limitations, limited capital, an inability to attract key personnel with the necessary skills, intellectual property constraints, testing delays, technological limits or an inability to act as quickly or efficiently as other competitors. In addition, new product or service offerings may not be widely accepted by our customers. Our business could be materially adversely affected if we are unable to timely and successfully develop and introduce new products or services.
Our failure to continuously develop effective service support systems could adversely impact our competitive position.
For many of our services, we can effectively compete only if we can quickly and efficiently (i) quote and accept customer orders, (ii) provision and initiate ordered services, (iii) provide customers with adequate means to manage their services and (iv) accurately bill for our services. Development of systems designed to support these tasks is a significant undertaking that continuously requires our personnel and third-party vendors to adjust to changes in our offerings and customers' preferences, to eliminate inconsistencies between the practices of our legacy operations and newly-acquired operations, to eliminate older support systems that are costly or obsolete, to develop uniform practices and procedures, and to automate them as much as possible. Our failure to continuously develop service support systems that are satisfactory to our current and potential customers could adversely impact our competitive position.
We may not be able to successfully adjust to changes in our industry, our markets and our product mix.
Ongoing changes in the communications industry have fundamentally changed consumers’ communications expectations and requirements. In response to these changes, we have substantially altered our product and service offerings through acquisitions and internal product development. Many of these changes have placed a higher premium on sales, marketing and product development functions, and necessitated ongoing changes in our processes and operating protocols, as well as periodic reorganizations of our sales and leadership teams. In addition, we now offer a more complex range of products and services, operate larger and more complex networks and serve a much larger and more diverse set of customers. Consequently, we now face greater challenges in effectively managing and administering our operations and allocating capital and other resources to our various offerings. For all these reasons, we cannot assure you that our efforts to adjust to these changes will be timely or successful.
Our revenues and cash flows may not be adequate to fund all of our current objectives.
As noted in the risk factor disclosures appearing above and below, changes in competition, technology, regulation and demand for our legacy services continue to place downward pressure on our consolidated revenues and cash flows. During each of 2016, 2015, 2014 and 2013, we experienced declines in revenues and net cash provided by operating activities as compared to prior periods. Our cash flows will be further impacted by other changes discussed herein, including anticipated increases in our cash tax payments prior to the pending Level 3 acquisition and additional post-retirement health care payments as a result of the depletion in 2016 of substantially all of the post-retirement benefit plan trust assets.
We rely upon our consolidated revenues and cash flows to fund our commitments and business objectives, including without limitation, funding our capital expenditures, operating costs, debt repayments, dividends, periodic share repurchases, periodic pension contributions and other benefits payments. We cannot assure you that our future cash flows will be sufficient to fund all of our cash requirements in the manner currently contemplated. Our inability to fund certain of these payments could have an adverse impact on our business, operations or competitive position or on the value of our securities.

We could be harmed by security breaches, damages or other significant disruptions or failures of our networks, information technology infrastructure or related systems, or of those we operate for certain of our customers.
We are materially reliant upon our networks, information technology infrastructure and related technology systems (including our billing and provisioning systems) to provide products and services to our customers and to manage our operations and affairs. We face the risk, as does any company, of a security breach or significant disruption of our information technology infrastructure and related systems. As a communications company that transmits large amounts of information over communications networks, we face an added risk that a security breach or other significant disruption of our public networks or information technology infrastructure and related systems that we develop, install, operate and maintain for certain of our business customers (which includes our wholesale and governmental customers) could lead to material interruptions or curtailments of service. Moreover, in connection with processing and storing sensitive and confidential customer data, we face a heightened risk that a security breach or disruption could result in unauthorized access to our customers’ proprietary information on our public networks or internal systems or the systems that we operate and maintain for certain of our customers.
We strive to maintain the security and integrity of information and systems under our control, and maintain contingency plans in the event of security breaches or other system disruptions. Nonetheless, we cannot assure you that our security efforts and measures will prevent unauthorized access to our systems, loss or destruction of data (including confidential customer information), account takeovers, unavailability of service, computer viruses, malware, ransomware, distributed denial-of-service attacks, or other forms of cyber-attacks or similar events. These threats may derive from human error, hardware or software vulnerabilities, fraud, malice or sabotage on the part of employees, third parties or foreign nations, or could result from aging equipment or accidental technological failure. These threats may also arise from failure or breaches of systems owned, operated or controlled by other unaffiliated operators to the extent we rely on such other systems to deliver services to our customers.
Similar to other large telecommunications companies, we are a constant target of cyber-attacks of varying degrees. Although some of these attacks have resulted in security breaches, to date, none of these breaches have resulted in a material adverse effect on our operating results or financial condition. You should be aware, however, that defenses against cyber-attacks currently available to U.S. companies are unlikely to prevent intrusions by a highly-determined, highly-sophisticated hacker. Consequently, you should assume that we will be unable to implement security barriers or other preventative measures that repel all future cyber-attacks. Any such future security breaches or disruptions could materially adversely affect our business, results of operations or financial condition, especially in light of the growing frequency, scope and well-documented sophistication of cyber-attacks and intrusions.
Although we maintain insurance coverage that may, subject to policy terms and conditions (including self-insured deductibles, coverage restrictions and monetary coverage caps), cover certain aspects of our cyber risks, such insurance coverage may be unavailable or insufficient to cover our losses.
Additional risks to our network, infrastructure and related systems include:
power losses or physical damage, whether caused by fire, flood, adverse weather conditions, terrorism, sabotage, vandalism or otherwise;
capacity or system configuration limitations, including those resulting from changes in our customer's usage patterns, the introduction of new technologies or products, or incompatibilities between our newer and older systems;
theft or failure of our equipment;
software or hardware obsolescence, defects or malfunctions;
deficiencies in our processes or controls;
our inability to hire and retain personnel with the requisite skills to adequately maintain our systems;
programming, processing and other human error; and
service failures of our third-party vendors and other disruptions that are beyond our control.

Due to these factors, from time to time in the ordinary course of our business we experience disruptions in our service, and could experience more significant disruptions in the future.
Disruptions, security breaches and other significant failures of the above-described networks and systems could:
disrupt the proper functioning of these networks and systems, which could in turn disrupt (i) our operational or administrative functions or (ii) the operations of certain of our customers who rely upon us to provide services critical to their operations;
result in the unauthorized access to, and destruction, loss, theft, misappropriation or release of proprietary, confidential, sensitive, classified or otherwise valuable information of ours, our customers or our customers’ end users, including trade secrets, which others could use for competitive, disruptive, destructive or otherwise harmful purposes and outcomes;
require significant management attention or financial resources to remedy the resulting damages or to change our systems, including expenses to repair systems, add new personnel or develop additional protective systems;
require us to notify customers, regulatory agencies or the public of data breaches;
require us to provide credits for future service under certain service level commitments we have provided contractually to our customers or to offer expensive incentives to retain customers;
subject us to claims for damages, fines, penalties, termination or other remedies under our customer contracts or service standards set by state regulatory commissions, which in certain cases could exceed our insurance coverage; or
result in a loss of business, damage our reputation among our customers and the public generally, subject us to additional regulatory scrutiny or expose us to prolonged litigation.
We could experience difficulties in expanding and updating our technical infrastructure.
Our ability to expand and update our systems and information technology infrastructure in response to our growth and changing business needs is important to our ability to maintain and develop attractive product and service offerings. As discussed further under “Business—Network Architecture” in Item 1 of Part I of our annual report on Form 10-K for year ended December 31, 2016, we are currently undertaking several complex, costly and time-consuming projects to simplify and modernize our network, which combines our legacy network and the networks of companies we have acquired in the past. Unanticipated delays in the completion of these projects may lead to increased project costs or operational inefficiencies. In addition, there may be issues related to our expanded or updated infrastructure that are not identified by our testing processes, and which may only become evident after we have started to fully utilize the redesigned systems. Our failure to modernize and upgrade our technology infrastructure could have adverse consequences, including the delayed implementation of new service offerings, decreased competitiveness of existing service offerings, network instabilities, increased operating or acquisition integration costs, service or billing interruptions, and the diversion of development resources.
Any or all of the foregoing developments could have a negative impact on our business, results of operations, financial condition and cash flows.
Negative publicity may adversely impact us.
Outages or other service failures of networks operated by us or other operators could cause substantial adverse publicity affecting us specifically or our industry generally. In either case, media coverage and public statements that insinuate improper actions by us or other operators, regardless of their factual accuracy or truthfulness, may result in negative publicity, litigation, governmental investigations or additional regulations. Addressing negative publicity and any resulting litigation or investigations may distract management, increase costs and divert resources. Negative publicity may have an adverse impact on our reputation and the morale of our employees, which could adversely affect our business, results of operations, financial condition and cash flows.
Market prices for many of our services have decreased in the past, and any similar price decreases in the future will adversely affect our revenues and margins.
Over the past several years, a range of competitive and technological factors, including robust network construction and intense competition, have lowered market prices for many of our products and services. If these market conditions persist, we may need to continue to reduce prices to retain customers and revenue. If future price reductions are necessary, our operating results will suffer unless we are able to offset these reductions by reducing our operating expenses or increasing our sales volumes.

Our future growth potential will depend in part on the continued development and expansion of the Internet.
Our future growth potential will depend in part upon the continued development and expansion of the Internet as a communication medium and marketplace for the distribution of data, video and other products by businesses, consumers, and governments. The use of the Internet for these purposes may not grow and expand at the rate anticipated by us or others, or may be restricted by factors outside of our control, including (i) actions by other carriers or governmental authorities that restrict us from delivering traffic over other parties' networks, (ii) changes in regulations, (iii) technological stagnation or (iv) changes in consumers' preferences or data usage.
If we fail to hire and retain qualified executives, managers and employees, our operating results could be harmed.
Our future success depends on our ability to identify, hire, train and retain executives, managers and employees with technological, engineering, product development, operational, provisioning, marketing, sales, administrative, managerial and other key skills. There is a shortage of qualified personnel in several of these fields. We compete with several other companies for this limited pool of potential employees. As our industry increasingly becomes more competitive, it could become especially difficult to attract and retain top personnel with skills in high demand. Our workforce reduction initiatives over the past couple of years have further increased the challenges of attracting and retaining talented individuals. In addition, subject to limited exceptions, none of our executives or domestic employees have long-term employment agreements. For all these reasons, there is no assurance that our efforts to recruit and retain qualified personnel will be successful.
Increases in broadband usage may cause network capacity limitations, resulting in service disruptions, reduced capacity or slower transmission speeds for our customers.
Video streaming services, gaming and peer-to-peer file sharing applications use significantly more bandwidth than other Internet activity such as web browsing and email. As use of these newer services continues to grow, our broadband customers will likely use much more bandwidth than in the past. If this occurs, we could be required to make significant capital expenditures to increase network capacity in order to avoid service disruptions, service degradation or slower transmission speeds for our customers. Alternatively, we could choose to implement network management practices to reduce the network capacity available to bandwidth-intensive activities during certain times in market areas experiencing congestion, which could negatively affect our ability to retain and attract customers in affected markets. While we believe demand for these services may drive broadband customers to pay for faster broadband speeds, competitive or regulatory constraints may preclude us from recovering the costs of the necessary network investments. This could result in an adverse impact to our operating margins, results of operations, financial condition and cash flows.
We have been accused of infringing the intellectual property rights of others and will likely face similar accusations in the future, which could subject us to costly and time-consuming litigation or require us to seek third-party licenses.
Like other communications companies, we have increasingly in recent years received a number of notices from third parties or have been named in lawsuits filed by third parties claiming we have infringed or are infringing upon their intellectual property rights. We are currently responding to several of these notices and claims and expect this industry-wide trend will continue. Responding to these claims may require us to expend significant time and money defending our use of the applicable technology, and divert management’s time and resources away from other business. In certain instances, we may be required to enter into licensing agreements requiring royalty payments. In the case of litigation, we could be required to pay damages or cease using the applicable technology. If we are required to take one or more of these actions, our profit margins may decline or our operations could be impaired. In addition, in responding to these claims, we may be required to stop selling or redesign one or more of our products or services, which could significantly and adversely affect our business, results of operations, financial condition and cash flows.
Similarly, from time to time, we may need to obtain the right to use certain patents or other intellectual property from third parties to be able to offer new products and services. If we cannot license or otherwise obtain rights to use any required technology from a third party on reasonable terms, our ability to offer new products and services may be prohibited, restricted, made more costly or delayed.

We may not be successful in protecting and enforcing our intellectual property rights.
We rely on various patents, copyrights, trade names, trademarks, service marks, trade secrets and other similar intellectual property rights, as well as confidentiality procedures and contractual restrictions, to establish and protect our proprietary rights. The steps we have taken, however, may not prevent unauthorized use or the reverse engineering of our technology. Others may independently develop technologies that are substantially equivalent, superior to, or otherwise competitive to the technologies we employ in our services or that infringe on our intellectual property. We may be unable to prevent competitors from acquiring proprietary rights that are similar to or infringe upon our proprietary rights, or to prevent our current or former employees from using or disclosing to others our proprietary information. Enforcement of our intellectual property rights may depend on initiating legal actions against parties who infringe or misappropriate our proprietary information, but these actions may not be successful, even when our rights have been infringed. If we are unsuccessful in protecting or enforcing our intellectual property rights, our business, competitive position, results of operations and financial condition could be adversely affected.
Our operations, financial performance and liquidity are materially reliant on various third parties.
Reliance on other communications providers. To offer voice or data services in certain of our markets, we must either lease network capacity from, or interconnect our network with the infrastructure of, other communications carriers who typically compete against us in those markets. Our reliance on these lease or interconnection arrangements limits our control over the quality of our services and exposes us to the risk that our ability to market our services could be adversely impacted by changes in the plans or properties of the carriers upon which we are reliant. In addition, we are exposed to the risk that the other carriers may be unwilling to continue or renew these arrangements in the future on terms favorable to us, or at all. This risk is heightened when the other carrier is a competitor of ours and may benefit from terminating the agreement. If we lose these arrangements and cannot timely replace them, our ability to provide services to our customers and conduct our business could be materially adversely affected.
Conversely, certain of our operations carry a significant amount of voice or data traffic for other communications providers. Their reliance on our services exposes us to the risk that they may transfer all or a portion of this traffic from our network to networks built, owned or leased by them, thereby reducing our revenues. For additional information, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Business Trends” included in Item 2 of Part I of this report.
We also rely on reseller and sales agency arrangements with other communications companies to provide some of the services that we offer to our customers, including video services and wireless products and services. As a reseller or sales agent, we do not control the availability, retail price, design, function, quality, reliability, customer service or branding of these products and services, nor do we directly control all of the marketing and promotion of these products and services. Similar to the risks described above regarding our reliance upon other carriers, we could be adversely affected if these communication companies fail to maintain competitive products or services, or fail to continue to make them available to us on attractive terms, or at all.
Our operations and financial performance could be adversely affected if our relationships with any of these other communications companies are disrupted or terminated for any other reason, including if such other companies:
become bankrupt or experience substantial financial difficulties;
suffer work stoppages or other labor strife;
challenge our right to receive payments or services under applicable regulations or the terms of our existing contractual arrangements; or
are otherwise unable or unwilling to make payments or provide services to us.
Reliance on other key suppliers and vendors. We depend on a limited number of suppliers and vendors for equipment and services relating to our network infrastructure. Our local exchange carrier networks consist of central office and remote sites, all with advanced digital switches. If any of these suppliers experience interruptions or other problems delivering or servicing these network components on a timely basis, our operations could suffer significantly. To the extent that proprietary technology of a supplier is an integral component of our network, we may have limited flexibility to purchase key network components from alternative suppliers and may be adversely affected if third parties assert patent infringement claims against our suppliers or us. We also rely on a limited number of (i) software vendors to support our business management systems, (ii) content suppliers to provide programming to our video operations, and (iii) contractors to assist us in connection with our network construction and maintenance activities. In the event it becomes necessary to seek alternative suppliers and vendors, we may be unable to obtain satisfactory replacement supplies, services, utilities or programming on economically attractive terms, on a timely basis, or at all, which could increase costs or cause disruptions in our services.

Reliance on utility providers and landlords. Our energy costs can fluctuate significantly or increase for a variety of reasons, including changes in legislation and regulation. Several pending proposals designed to reduce greenhouse emissions could substantially increase our energy costs, which we may not be able to pass on to our customers.
We lease many of our office facilities. Although the majority of these leases provide us with the opportunity to renew the lease, many of these renewal options provide that rent for the renewal period will be equal to the fair market rental rate at the time of renewal. Any resulting increases in our rent costs could have a negative impact on our financial results.
Reliance on governmental payments. We receive a material amount of revenue or government subsidies under various government programs, which are further described under the heading “Risk Factors—Risks Relating to Legal and Regulatory Matters." We also provide products or services to various federal, state and local agencies. Our failure to comply with complex governmental regulations and laws applicable to these programs, or the terms of our governmental contracts, could result in us being suspended or disbarred from future governmental programs or contracts for a significant period of time. Moreover, certain governmental agencies frequently reserve the right to terminate their contracts for convenience. If our governmental contracts are terminated for any reason, or if we are suspended or debarred from governmental programs or contracts, our results of operations and financial condition could be materially adversely affected.
Reliance on financial institutions. We rely on a number of financial institutions to provide us with short-term liquidity under our credit facility. If one or more of these lenders default on their funding commitments, our access to revolving credit could be adversely affected.
Rising costs, changes in consumer behaviors and other industry changes may adversely impact our video business.
The costs of purchasing video programming have risen significantly in recent years and continue to rise. Moreover, an increasing number of consumers are receiving access to video content through video streaming or other services pursuant to new technologies for a nominal or no fee, which will likely reduce demand for more traditional video products, such as the satellite TV services that we resell and our Prism TV services.
New technologies are also affecting consumer behavior in ways that are changing how content is delivered and viewed. Increased access to various media through wireless devices has the potential to reduce the viewing of our content through traditional distribution outlets. These new technologies have increased the number of entertainment choices available to consumers and intensified the challenges posed by audience fragmentation. Some of these newer technologies also give consumers greater flexibility to watch programming on a time-delayed or on-demand basis. All of these changes, coupled with changing consumer preferences and other related developments, could reduce demand for our video products and services.
If we fail to extend or renegotiate our collective bargaining agreements with our labor unions as they expire from time to time, or if our unionized employees were to engage in a strike or other work stoppage, our business and operating results could be materially harmed.
As of March 31, 2017, approximately 37% of our employees were members of various bargaining units represented by the Communications Workers of America or the International Brotherhood of Electrical Workers. From time to time, our labor agreements with unions expire. Approximately 10,000, or 25%, of our employees are subject to collective bargaining agreements that are scheduled to expire October 7, 2017. Although we typically are able to negotiate new bargaining agreements, we cannot predict the outcome of our future negotiations of these agreements. We may be unable to reach new agreements, and union employees may engage in strikes, work slowdowns or other labor actions, which could materially disrupt our ability to provide services and result in increased cost to us. In addition, new labor agreements may impose significant new costs on us, which could impair our financial condition or results of operations in the future. To the extent they contain benefit provisions, these agreements may also limit our flexibility to change benefits in response to industry or competitive changes. In particular, post-employment benefits provided under these agreements could cause us to incur costs not faced by many of our competitors, which could ultimately hinder our competitive position.

Portions of our property, plant and equipment are located on property owned by third parties.
We rely on rights-of-way, colocation agreements and other authorizations granted by governmental bodies, railway companies, carriers and other third parties to locate our cable, conduit and other network equipment on or under their respective properties. A significant number of these authorizations are scheduled to lapse over the next five to ten years, unless we are able to extend or renew them. Our operations could be adversely affected if any of these authorizations terminate or lapse, or if the landowner requests price increases.
Over the past few years, certain utilities, cooperatives and municipalities in certain of the states in which we operate have requested significant rate increases for attaching our plant to their facilities. To the extent that these entities are successful in increasing the amount we pay for these attachments, our future operating costs will increase.
Our business customers may seek to shift risk to us.
We furnish to and receive from our business customers indemnities relating to damages caused or sustained by us in connection with certain of our operations. Our customers’ changing views on risk allocation could cause us to accept greater risk to win new business or could result in us losing business if we are not prepared to take such risks. To the extent that we accept such additional risk, and seek to insure against it, our insurance premiums could rise.
Our international operations expose us to various regulatory, currency, tax, legal and other risks.
Our international operations are subject to U.S. and other laws and regulations regarding operations in foreign jurisdictions in which we provide services. These numerous and sometimes conflicting laws and regulations include anti-corruption laws, anti-competition laws, trade restrictions, tax laws, immigration laws, privacy laws and accounting requirements. Many of these laws are complex and change frequently. Regulations that require the awarding of contracts to local contractors or the employment of local citizens may adversely affect our flexibility or competitiveness in these jurisdictions. Local laws and regulations, and their interpretation and enforcement, differ significantly among those jurisdictions. There is a risk that these laws or regulations may materially restrict our ability to deliver services in various foreign jurisdictions or could be breached through inadvertence or mistake, fraudulent or negligent behavior of our employees or agents, failure to comply with certain formal documentation or technical requirements, or otherwise. Violations of these laws and regulations could result in fines and penalties, criminal sanctions against us or our personnel, or prohibitions on the conduct of our business or our ability to operate in one or more countries, any of which could have a material adverse effect on our business, reputation, results of operations, financial condition or prospects.
Many foreign laws and regulations relating to communications services are more restrictive than U.S. laws and regulations, particularly those relating to privacy rights and data retention. For example, all 28 member states of the European Union have adopted new European data protection laws that we believe could impact our operations in Europe and could potentially expose us to an increased risk of litigation or significant regulatory fines. Moreover, national regulatory frameworks that are consistent with the policies and requirements of the World Trade Organization have only recently been, or are still being, enacted in many countries. Accordingly, many countries are still in the early stages of providing for and adapting to a liberalized telecommunications market. As a result, in these markets we may encounter more protracted and difficult procedures to obtain licenses necessary to provide the full set of products and services we seek to offer.
In addition to these international regulatory risks, some of the other risks inherent in conducting business internationally include:
tax, licensing, political or other business restrictions or requirements;
uncertainty concerning import and export restrictions, including the risk of fines or penalties assessed for violations;
longer payment cycles and problems collecting accounts receivable;
domestic and foreign regulation of overseas operations, including regulation under the Foreign Corrupt Practices Act, or FCPA, as well as other anti-corruption laws;
economic, social and political instability, with the attendant risks of terrorism, kidnapping, extortion, civic unrest and potential seizure or nationalization of assets;
currency and exchange controls, repatriation restrictions and fluctuations in currency exchange rates;
challenges in securing and maintaining the necessary physical and telecommunications infrastructure;
the inability in certain jurisdictions to enforce contract rights either due to underdeveloped legal systems or government actions that result in a deprivation of contract rights;

the inability in certain jurisdictions to adequately protect intellectual property rights;
laws, policies or practices that restrict with whom we can contract or otherwise limit the scope of operations that can legally or practicably be conducted within any particular country;
potential submission of disputes to the jurisdiction of a foreign court or arbitration panel;
reliance on third parties, including those with which we have limited experience;
limitations in the availability, amount or terms of insurance coverage;
the imposition of unanticipated or increased taxes, increased communications or privacy regulations or other forms of public or governmental regulation that increase our operating expenses; and
challenges in staffing and managing foreign operations.
Many of these risks are beyond our control, and we cannot predict the nature or the likelihood of the occurrence or corresponding effect of any such events, each of which could have an adverse effect on our financial condition and results of operations.
We do business and may in the future do additional business in certain countries or regions in which corruption is a serious problem. Moreover, in order to effectively compete in certain foreign jurisdictions, it is frequently necessary or required to establish joint ventures, strategic alliances or marketing arrangements with local operators, partners or agents. In certain instances, these local operators, partners or agents may have interests that are not always aligned with ours. Reliance on local operators, partners or agents could expose us to the risk of being unable to control the scope or quality of our overseas services or products, or being held liable under the FCPA or other anti-corruption laws for actions taken by our strategic or local partners or agents even though these partners or agents may not themselves be subject to the FCPA or other applicable anti-corruption laws. Any determination that we have violated the FCPA or other anti-corruption laws could have a material adverse effect on our business, results of operations, reputation or prospects.
We may not be able in the future to acquire new businesses on attractive terms.
Historically, much of our growth has been attributable to acquisitions. Our future ability to grow through additional acquisitions could be limited by several factors, including our leverage, debt covenants and inability to identify attractively-priced target companies. Moreover, we generally must devote significant management attention and resources to evaluate acquisition opportunities, which could preclude us from evaluating acquisition opportunities during periods when management is committed to other opportunities, tasks or activities. Accordingly, we cannot assure you that we will be able to attain future growth through acquisitions. See "Risks Relating to Our Pending Acquisition of Level 3" for a discussion of certain specific risks raised by our pending acquisition of Level 3 and see the next risk factor immediately below for a discussion of certain general risks raised by acquisitions.
Any additional future acquisitions by us would subject us to additional business, operating and financial risks, the impact of which cannot presently be evaluated, and could adversely impact our capital structure or financial position.
In an effort to implement our business strategies, we may from time to time in the future pursue other acquisition or expansion opportunities, including strategic investments. These transactions could involve acquisitions of entire businesses or investments in start-up or established companies, and could take several forms, including mergers, joint ventures, investments in new lines of business, or the purchase of equity interests or assets. These types of transactions may present significant risks and uncertainties, including the difficulty of identifying appropriate companies to acquire or invest in on acceptable terms, distraction of management from current operations, insufficient revenue acquired to offset liabilities assumed, unexpected expenses, inadequate return of capital, regulatory or compliance issues, potential infringements, potential violations of covenants in our debt instruments and other unidentified issues not discovered in due diligence. To the extent we acquire part or all of a business that is financially unstable or is otherwise subject to a high level of risk, we may be affected by currently unascertainable risks of that business. Accordingly, there is no current basis for you to evaluate the possible merits or risks of the particular business or assets that we may acquire. Moreover, we cannot guarantee that any such transaction will ultimately result in the realization of the benefits of the transaction originally anticipated by us or that any such transaction will not have a material adverse impact on our financial condition or results of operations. In particular, we can provide no assurances that we will be able to successfully integrate the technology systems, billing systems, accounting processes, sales force, cost structure, product development and service delivery processes, standards, controls, policies, strategies and culture of the acquired company with ours. In addition, the financing of any future acquisition completed by us could adversely impact our capital structure as any such financing would likely include the issuance of additional securities or the borrowing of additional funds.

Except as required by law or applicable securities exchange listing standards, we do not expect to ask our shareholders to vote on any proposed acquisition. Moreover, we generally do not announce our acquisitions until we have entered into a preliminary or definitive agreement.
Unfavorable general economic conditions could negatively impact our operating results and financial condition.
Unfavorable general economic conditions, including unstable economic and credit markets, could negatively affect our business. Worldwide economic growth has been sluggish since 2008, and many experts believe that a confluence of global factors may result in a prolonged period of economic stagnation, slow growth or economic uncertainty. While it is difficult to predict the ultimate impact of these general economic conditions, they could adversely affect demand for some of our products and services and could cause customers to shift to lower priced products and services or to delay or forego purchases of our products and services. These conditions impact, in particular, our ability to sell discretionary products or services to business customers that are under pressure to reduce costs or to governmental customers that have suffered substantial budget cuts in recent years. Any one or more of these circumstances could continue to depress our revenues. Also, our customers may encounter financial hardships or may not be able to obtain adequate access to credit, which could negatively impact their ability to make timely payments to us. In addition, as discussed further below, unstable economic and credit markets may preclude us from refinancing maturing debt at terms that are as favorable as those from which we previously benefited, at terms that are acceptable to us, or at all. For these reasons, among others, if current economic conditions persist or decline, our operating results, financial condition, and liquidity could be adversely affected.
For additional information about our business and operations, see "Business" in Item 1 of Part I of our annual report on Form 10-K for year ended December 31, 2016.
Risks Relating to Our Pending Acquisition of Level 3
The completion of the Level 3 acquisition is subject to several conditions, including the receipt of consents and approvals from government entities, which may impose conditions that could have an adverse effect on the combined company or could cause the proposed transaction to be abandoned.
The completion of the Level 3 acquisition is subject to a number of conditions, including, among others, the expiration or termination of the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act and the receipt of approvals from the FCC and certain other governmental entities. In deciding whether to grant some of these approvals, the relevant governmental entity will make a determination of whether, among other things, the transaction is in the public interest. We cannot provide any assurance that the necessary approvals will be obtained.
In addition, regulatory entities may impose certain requirements or obligations as conditions for their approval or in connection with their review. The merger agreement may require CenturyLink or Level 3 to accept conditions from these regulators that could adversely affect the combined company without either of CenturyLink or Level 3 having the right to refuse to close the acquisition on the basis of those regulatory conditions. While we are not required to accept conditions that would or would reasonably be likely to have a material adverse effect on the combined company (assuming for these purposes that the combined company is the size of CenturyLink), this assessment will be made at or prior to the closing and we cannot provide any assurance that any required conditions will not have a material adverse effect on the combined company following the proposed acquisition. In addition, we cannot provide any assurance that these conditions will not result in the abandonment of the acquisition.
It could take longer to receive the requisite governmental consents and approvals than currently anticipated. Any delay in completing the acquisition, whether caused by regulatory delays or otherwise, could cause us, Level 3, as well as the combined company, to incur extra transaction expenses or to delay or fail to realize fully the benefits that we currently expect to receive if the acquisition is successfully completed within the expected time frame.

Failure to complete the acquisition could negatively affect our stock price and our future business and financial results.
 If the Level 3 acquisition is not completed, our ongoing businesses may be adversely affected and we will be subject to several risks, including the following:
the possibility that we could be required to pay Level 3 a substantial termination fee and, in some cases, certain expenses of Level 3 if the acquisition is terminated under certain qualifying circumstances;
the incurrence of costs and expenses relating to the proposed acquisition, such as financing, legal, accounting, financial advisor, filing, printing and mailing fees and expenses, including the potential expense reimbursement obligations described above;
the possibility of a change in the trading price of our common stock to the extent current trading prices reflect a market assumption that the acquisition will be completed;
the possibility that we could suffer potential negative reactions from our employees, customers or vendors; and
the possibility that we could suffer adverse consequences associated with our management's focus on the acquisition instead of on pursuing other opportunities that could have been beneficial to us, without realizing any of the benefits contemplated by the acquisition.
In addition, if the acquisition is not completed, we could be subject to litigation related to any failure to complete the acquisition or to perform our obligations under the merger agreement.
If the acquisition is not completed, we cannot assure you that these risks will not materialize and will not materially affect our business financial results and stock price.
Our merger agreement with Level 3 contains provisions that could discourage a potential competing acquirer of us or could result in any competing proposal being at a lower price than it might otherwise be.
Our merger agreement with Level 3 contains "no-shop" provisions that, subject to limited exceptions, restrict our ability to solicit, encourage, facilitate or discuss competing third-party proposals to acquire all or a significant part of CenturyLink. In some circumstances on termination of the merger agreement, we may be required to pay a termination fee or expenses to Level 3. These provisions could discourage a potential competing acquirer that might have an interest in acquiring all or a significant part of us from considering or proposing that acquisition, even if it were prepared to pay an attractive purchase price, or might result in a potential competing acquirer proposing to pay a lower price than it might otherwise have proposed to pay because of the added expense of the termination fee or expenses that may become payable in certain circumstances. If the merger agreement is terminated and we attempt to seek another business acquisition, we may not be able to negotiate a transaction with another party on terms comparable or better than the terms of the Level 3 acquisition.
The pendency of the Level 3 acquisition could adversely affect the business and operations of CenturyLink or Level 3.
 In connection with the pending Level 3 acquisition, some of the customers or vendors of CenturyLink or Level 3 may delay or defer decisions or reduce their level of business with either or both of the companies, any of which could negatively affect the revenues, earnings, cash flows and expenses of CenturyLink or Level 3, regardless of whether the acquisition is completed. Similarly, current and prospective employees of CenturyLink and Level 3 may experience uncertainty about their future roles with the combined company following the acquisition, which may materially adversely affect the ability of each of CenturyLink or Level 3 to attract and retain key management, sales, marketing, operational and technical personnel during the pendency of the acquisition. In addition, due to operating covenants in the merger agreement, each of CenturyLink and Level 3 may be unable, during the pendency of the acquisition, to pursue strategic transactions, undertake significant capital projects, undertake certain significant financing transactions and otherwise pursue other actions that are not in the ordinary course of business, even if such actions would prove beneficial. Any of these effects could have an adverse effect on the ability to generate revenue at anticipated levels prior to the completion of the acquisition. Moreover, the pursuit of the acquisition and the preparation for the integration of the companies may place a significant burden on the management and personnel of both companies. The diversion of management's attention away from operating the companies in the ordinary course could adversely affect CenturyLink's and Level 3's financial results.

Current CenturyLink shareholders may have a reduced ownership and voting interest in the combined company after the Level 3 acquisition.
CenturyLink expects to issue or reserve for issuance approximately 538 million shares of CenturyLink common stock to Level 3 stockholders in connection with the acquisition (including shares of CenturyLink common stock to be issued in connection with outstanding Level 3 equity awards). Upon completion of the Level 3 acquisition, each CenturyLink shareholder will remain a shareholder of CenturyLink with a percentage ownership of the combined company that may be smaller than the shareholder's percentage of CenturyLink prior to the transaction, depending upon such shareholder's current ownership of Level 3 shares. As a result of these potentially reduced ownership percentages, CenturyLink shareholders may have less voting power in the combined company than they now have with respect to CenturyLink.
We expect to incur substantial expenses related to the Level 3 acquisition.
 We expect to incur substantial expenses in connection with completing the acquisition and integrating our business, operations, networks, systems, technologies, policies and procedures with those of Level 3. There are a large number of systems that will likely be integrated, including management information, purchasing, accounting and finance, sales, payroll and benefits, fixed asset, lease administration and regulatory compliance systems. While we have assumed that a certain level of transaction and integration expenses would be incurred, there are a number of factors beyond our control that could affect the total amount or the timing of our integration expenses. Many of the expenses that will be incurred, by their nature, are difficult to estimate accurately at the present time. Due to these factors, the transaction and integration expenses associated with the acquisition are likely in the near term to exceed the savings that we expect to achieve from the elimination of duplicative expenses and the realization of economies of scale and cost savings related to the integration of the businesses following the completion of the acquisition. As a result of these expenses, we expect to take charges against our earnings before and after the completion of the acquisition. The charges taken after the acquisition are expected to be significant, although the aggregate amount and timing of such charges are uncertain at present.
Following the Level 3 acquisition, the combined company may be unable to integrate successfully our business and Level 3’s business and realize the anticipated benefits of the acquisition.
The proposed transaction involves the combination of two companies which currently operate as independent public companies. The combined company will be required to devote significant management attention and resources to integrating the business practices and operations of CenturyLink and Level 3. Potential difficulties the combined company may encounter in the integration process include the following:
the inability to successfully combine our business and Level 3’s business in a manner that permits the combined company to achieve the cost savings and operating synergies anticipated to result from the acquisition, which would result in the anticipated benefits of the acquisition not being realized in the time frame currently anticipated or at all;
lost sales and customers as a result of certain customers of either of the two companies deciding to terminate or reduce their business with the combined company;
the complexities associated with managing the combined businesses out of several different locations and integrating personnel from the two companies, while at the same time attempting to (i) provide consistent, high quality products and services under a unified culture and (ii) focus on other on-going transactions, including the divestiture of our data centers and colocation business and related transactions;
the additional complexities of combining two companies with different histories, regulatory restrictions, operating structures and markets;
the failure to retain key employees of either of the two companies;
potential unknown liabilities and unforeseen increased expenses, delays or regulatory conditions associated with the acquisition; and
performance shortfalls at one or both of the two companies as a result of the diversion of management’s attention caused by completing the acquisition and integrating the companies’ operations.
For all these reasons, you should be aware that it is possible that the integration process could result in the distraction of the combined company’s management, the disruption of the combined company’s ongoing business or inconsistencies in the combined company’s products, services, standards, controls, procedures and policies, any of which could adversely affect the ability of the combined company to maintain relationships with customers, vendors and employees or to achieve the anticipated benefits of the acquisition, or could otherwise adversely affect the business and financial results of the combined company. 

Following the Level 3 acquisition, we may be unable to retain key employees.
The success of the combined company after the acquisition will depend in part upon its ability to retain key Level 3 and CenturyLink employees. Key employees may depart either before or after the acquisition because of issues relating to the uncertainty and difficulty of integration or a desire not to remain with the combined company following the acquisition. Accordingly, no assurance can be given that we, Level 3 and, following the acquisition, the combined company will be able to retain key employees to the same extent as in the past. 
In connection with the Level 3 acquisition, we will incur and assume a substantial amount of indebtedness and the agreements that will govern the indebtedness to be incurred or assumed by us are expected to contain various covenants and other provisions that impose restrictions on our ability to operate.
As a result of incurring the debt financing for the Level 3 acquisition and assuming Level 3's existing consolidated indebtedness in connection with the acquisition, we will become more leveraged. This could have material adverse consequences for us, including those listed below under the heading "Risks Affecting Our Liquidity and Capital Resources—Our high debt levels expose us to a broad range of risks."
The agreements that will govern the indebtedness to be incurred or assumed by us in connection with the acquisition are expected to contain certain affiliate guarantees and pledges of stock of certain affiliates and various affirmative and negative covenants that may, subject to certain significant exceptions, restrict the ability of us and certain of our subsidiaries to, among other things, pledge property, incur additional indebtedness, enter into sale and lease-back transactions, make loans, advances or other investments, make non-ordinary course asset sales, declare or pay dividends or make other distributions with respect to equity interest, merge or consolidate with any other person or sell or convey certain assets to any one person, among various other things. In particular, certain covenants contained in Level 3's indebtedness to be assumed by us may restrict our ability to distribute cash from Level 3 to other of our affiliated entities, or enter into other transactions among our wholly owned subsidiaries. In addition, some of the agreements that govern the debt financing are expected to contain financial covenants that will require us to maintain certain financial ratios. The ability of us and our subsidiaries to comply with these provisions may be affected by events beyond our and their control. Failure to comply with these covenants could result in an event of default, which, if not cured or waived, could accelerate our debt repayment obligations. Certain of our debt instruments have cross-default or cross-acceleration provisions. When present, these provisions could have a wider impact on liquidity than might otherwise arise from a default or acceleration of a single debt instrument. For additional information, see "Risks Affecting Our Liquidity and Capital Resources."
Following the Level 3 acquisition, we plan to conduct rebranding initiatives that are likely to involve substantial costs and may not be favorably received by customers.
Prior to the Level 3 acquisition, CenturyLink and Level 3 will each continue to market their respective products and services using the “CenturyLink” and “Level 3” brand names and logos. Following the acquisition, “CenturyLink” will be the brand name of the combined company. As a result, we expect to incur substantial costs in rebranding the combined company’s products and services in those markets that previously used the "Level 3" name, and may incur write-offs associated with the discontinued use of Level 3's brand names. We cannot assure you that customers will be receptive to our proposed rebranding efforts. The failure of any of these initiatives could adversely affect our ability to attract and retain customers after the acquisition, resulting in reduced revenues.
Consummation of the Level 3 acquisition will increase our exposure to the risk of operating internationally.
CenturyLink and, to a greater extent, Level 3 conduct international operations, which expose each of them to the risks described under the heading "Risks Effecting Our Business—Our international operations expose us to various regulatory, currency, tax, legal and other risks." Consummation of the Level 3 acquisition will generally increase our exposure to these risks. In particular, we expect that our acquisition of Level 3 will increase our exposure to currency exchange rate risks and currency transfer restrictions. Moreover, the acquisition of Level 3's Latin American operations will expose CenturyLink to the economic and political risks of operating in those markets.
Level 3 has only recently generated net income, and has generated substantial net losses in the past.
As indicated in Level 3's consolidated financial statements included in its reports filed with the SEC, Level 3 has only generated net income for its three most recently completed full fiscal years, and generated substantial losses prior to then.

Counterparties to certain significant agreements with Level 3 may exercise contractual rights to terminate such agreements following the Level 3 acquisition.
Level 3 is a party to certain agreements that give the counterparty a right under certain conditions to terminate the agreement following a "change in control" of Level 3. Under most such agreements, the Level 3 acquisition will constitute a change in control and therefore the counterparty may terminate the agreement upon the closing of the acquisition, subject to the terms and conditions specified in such agreements. Level 3 has agreements subject to such termination provisions with significant customers, major suppliers and providers of services where Level 3 has acted as reseller or sales agent. In addition, certain Level 3 customer contracts, including those with state or federal government agencies, allow the customer to terminate the contract at any time for convenience, which would allow the customer to terminate its contract before, at or after the closing of the acquisition. Any such counterparty may request modifications of their respective agreements as a condition to foregoing exercise of their termination rights. There is no assurance that such agreements will not be terminated, that any such terminations will not result in a material adverse effect, or that any modifications of such agreements to avoid termination will not result in a material adverse effect.
We may be unable to obtain security clearances necessary to perform certain Level 3 government contracts.
Certain Level 3 legal entities and officers have security clearances required for Level 3's performance of customer contracts with various government entities. Following the acquisition, it may be necessary for us to obtain comparable security clearances. If we or our officers are unable to qualify for such security clearances, we may not be able to continue to perform such contracts.
We cannot assure you whether, when or in what amounts we will be able to use Level 3’s net operating loss carryforwards following the Level 3 acquisition.
As of December 31, 2016, Level 3 had approximately $9.0 billion of net operating loss carryforwards, ("NOLs"), which for U.S. federal income tax purposes can be used to offset future taxable income, subject to certain limitations under Section 382 of the Code and related Treasury regulations. Our ability to use these NOLs following the Level 3 acquisition would likely be further limited by Section 382 if Level 3 is deemed to undergo an ownership change as a result of the acquisition or CenturyLink is deemed to undergo an ownership change following the acquisition, either of which could restrict use of a material portion of the NOLs. Determining the limitations under Section 382 is technical and highly complex. Although the parties, based on their review to date, currently believe that Level 3 will undergo an ownership change as a result of the acquisition, neither company has definitively completed the analysis necessary to confirm this. Moreover, issuances or sales of our stock following the acquisition (including certain transactions outside of our control) could result in an ownership change of CenturyLink under Section 382, which may further limit its use of the NOLs. For these and other reasons, we cannot assure you that we will be able to use the NOLs after the acquisition in the amounts we project.
Our pending acquisition of Level 3 raises other risks.
 Our pending acquisition of Level 3 and, upon completion thereof, our ownership of Level 3 raise additional risks not described above. For additional information, see (i) the definitive joint proxy statement/prospectus filed with the SEC by us on February 13, 2017 and (ii) Level 3's most recently filed annual report on Form 10-K, as updated by its subsequent quarterly reports on Form 10-Q.
Risks Relating to Legal and Regulatory Matters
We operate in a highly regulated industry and are therefore exposed to restrictions on our operations and a variety of claims relating to such regulation.
General. We are subject to significant regulation by, among others, (i) the Federal Communications Commission (“FCC”), which regulates interstate communications, (ii) state utility commissions, which regulate intrastate communications, and (iii) various foreign governments and international bodies, which regulate our international operations. Generally, we must obtain and maintain certificates of authority or licenses from these bodies in most territories where we offer regulated services. We cannot assure you that we will be successful in obtaining or retaining all licenses necessary to carry out our business plan, and, even if we are, the prescribed service standards and conditions imposed on us in connection with obtaining or acquiring control of these licenses may impose on us substantial costs and limitations. We are also subject to numerous requirements and interpretations under various international, federal, state and local laws, rules and regulations, which are quite detailed and occasionally in conflict with each other. Accordingly, we cannot ensure that we are always considered to be in compliance with all these requirements at any single point in time. The agencies responsible for the enforcement of these laws, rules and regulations may initiate inquiries or actions based on customer complaints or on their own initiative. Even if we are ultimately found to have complied with applicable regulations, such actions or inquiries could create adverse publicity that negatively impacts our business.

Regulation of the telecommunications industry continues to change, and the regulatory environment varies substantially from jurisdiction to jurisdiction. A substantial portion of our local voice services revenue remains subject to FCC and state utility commission pricing regulation, which periodically exposes us to pricing or earnings disputes and could expose us to unanticipated price declines. In addition, from time to time carriers or other third parties refuse to pay for certain of our services, challenge our rights to receive certain service payments, file complaints requesting rate reductions or take other similar actions that have the potential to reduce our revenues. Our future revenues, costs, and capital investment could be adversely affected by material changes to or decisions regarding the applicability of government requirements, including, but not limited to, changes in rules governing intercarrier compensation, state and federal USF support, competition policies, pricing limitations or operational restrictions. There can be no assurance that future regulatory, judicial or legislative activities will not have a material adverse effect on our operations, or that regulators or third parties will not raise material issues with regard to our compliance or noncompliance with applicable regulations.
Changes in the composition and leadership of the FCC, state commissions and other agencies that regulate our business could have significant impacts on our revenues, expenses, competitive position and prospects. Changes in the composition and leadership of these agencies are often difficult to predict, and make future planning more difficult.
Risks associated with recent changes in regulation. Changes in regulation can have a material impact on our business, revenues or financial performance. Recent changes in federal regulations have substantially impacted our operations. In October 2011, the FCC adopted an order providing for a multi-year transition to a regulatory structure that reduces intercarrier compensation charges, redeploys universal service funding to newer technologies, and increases certain end-user charges. These changes, coupled with our participation in the new FCC support programs, has significantly impacted various aspects of our operations, financial results and capital expenditures, including the amount of revenues we collect from our wholesale customers and our receipt of federal support payments. We expect these impacts will continue in the future. For more information, see "Business—Regulation" in Item 1 of Part I of our annual report on Form 10-K for the year ended December 31, 2016, and "Management's Discussion and Analysis of Financial Condition and Results of Operations" in Item 2 of Part I of this report.
In addition, during the last few years Congress or the FCC has initiated various other changes, including various broadband and Internet regulation initiatives and actions that will restrict our ability to discontinue or reduce certain services, even if unprofitable. Many of the FCC’s regulations adopted in recent years remain subject to judicial review and additional rulemakings, thus increasing the difficulty of determining the ultimate impact of these changes on us and our competitors.
Certain states have recently taken steps that could reduce the amount of their universal service support payments to incumbent local exchange companies. If these trends continue, we would suffer a reduction in our revenues from state support programs.
Risks of higher costs. Regulations continue to create significant operating and capital costs for us. Challenges to our tariffs by regulators or third parties or delays in obtaining certifications and regulatory approvals could cause us to incur substantial legal and administrative expenses, and, if successful, such challenges could adversely affect the rates that we are able to charge our customers.
Our business also may be impacted by legislation and regulation imposing new or greater obligations related to regulations or laws related to regulating broadband services, storing records, bolstering homeland security or cyber security, increasing disaster recovery requirements, minimizing environmental impacts, enhancing privacy, restricting data collection, protecting intellectual property rights of third parties, or addressing other issues that impact our business, including (i) the Communications Assistance for Law Enforcement Act, which requires communications carriers to ensure that their equipment, facilities, and services are able to facilitate authorized electronic surveillance, (ii) the USA Freedom Act, which requires communication companies to store records of communications of their customers, and (iii) laws that have significantly enhanced our responsibilities relating to data security in certain jurisdictions. We expect our compliance costs to increase if future laws or regulations continue to increase our obligations.
Increased risks of fines. We have recently paid certain regulatory fines associated with network or service outages, particularly with respect to outages impacting the availability of emergency - 911 services. Over the past couple of years, we believe that regulators have assessed substantially higher fines than in the past for these types of incidents, and it is possible this trend will continue.

Risks of reduced flexibility. As a diversified full service incumbent local exchange carrier in many of our key operating markets, we have traditionally been subject to significant regulation that does not apply to many of our competitors. This regulation in many instances restricts our ability to change rates, to compete and to respond rapidly to changing industry conditions. In particular, cable television companies in recent years have been able to exploit differences in regulatory oversight, which we believe has helped them to develop service offerings competitive with ours. As our business becomes increasingly competitive, regulatory disparities between us and our competitors could increasingly impede our ability to compete.
Risks posed by other regulations. All of our operations are also subject to a variety of environmental, safety, health and other governmental regulations. We monitor our compliance with federal, state and local regulations governing the management, discharge and disposal of hazardous and environmentally sensitive materials. Although we believe that we are in compliance with these regulations in all material respects, our management, discharge or disposal of hazardous and environmentally sensitive materials might expose us to claims or actions that could potentially have a material adverse effect on our business, financial condition and operating results. For a discussion of regulatory risks associated with our international operations, see “Risk Factors—Risks Affecting Our Business—Our international operations expose us to various regulatory, currency, tax, legal and other risks."
Our participation in the FCC's Connect America Fund ("CAF") Phase 2 support program poses certain risks.
Our participation in the FCC's CAF Phase 2 support program subjects us to certain financial risks. If we fail to attain certain specified infrastructure buildout requirements, the FCC could withhold future CAF support payments until these shortcomings are rectified. In addition, if we are not in compliance with FCC measures by the end of the CAF Phase 2 program, we would incur substantial penalties. To comply with the FCC's buildout requirements, we believe we will need to dedicate a substantial portion of our future capital expenditure budget to the construction of new infrastructure. The CAF-related expenditures could reduce the amount of funds we are willing or able to allocate to other initiatives or projects.
Regulation of the Internet could limit our ability to operate our broadband business profitably and to manage our broadband facilities efficiently.
In order to continue to provide quality broadband service at attractive prices, we believe we need the continued flexibility to respond to changing consumer demands, to manage bandwidth usage efficiently for the benefit of all customers and to invest in our networks. In 2015, the FCC adopted new regulations that regulate broadband services as a public utility under Title II of the Communications Act. The ultimate impact of the new regulations will depend on several factors, including the manner in which the new regulations are implemented and enforced and whether those regulations are altered by the newly-constituted FCC or Congress. Although it is premature for us to determine the ultimate impact of the new regulations upon our operations, we currently anticipate that implementation of the proposed rules could hamper our ability to operate our data networks efficiently, restrict our ability to implement network management practices necessary to ensure quality service, increase the cost of network extensions and upgrades, and otherwise negatively impact our current operations. Our service offerings could become subject to additional laws and regulations as they are adopted or applied to the Internet. As the significance of the Internet expands, federal, state, local or foreign governments may adopt new laws or regulations, or apply existing laws and regulations to the Internet. We cannot predict the outcome of any such changes.
We may be liable for the material that content providers distribute over our network.
Although we believe our liability for third party information stored on or transmitted through our networks is limited, the liability of private network operators is impacted both by changing technology and evolving legal principles that remain unsettled in many jurisdictions. As a private network provider, we could be exposed to legal claims relating to third party content stored or transmitted on our networks. Such claims could involve, among others, allegations of defamation, invasion of privacy, copyright infringement, or aiding and abetting restricted activities such as online gambling or pornography. If we decide to implement additional measures to reduce our exposure to these risks, or if we are required to defend ourselves against these kinds of claims, our operations and financial results could be negatively affected.
Any adverse outcome in any of our pending key legal proceedings could have a material adverse impact on our financial condition and operating results, on the trading price of our securities and on our ability to access the capital markets.
There are several material proceedings pending against us, as described in Note 10—Commitments and Contingencies to our consolidated financial statements included in Item 1 of Part I of this report. Results of these legal proceedings cannot be predicted with certainty. Irrespective of its merits, litigation may be both lengthy and disruptive to our operations and could cause significant expenditure and diversion of management attention. Any of the proceedings described in Note 10, as well as current litigation not described therein or future litigation, could have a material adverse effect on our financial position or operating results. We can give you no assurances as to the impact of these matters on our operating results or financial condition.

We are subject to franchising requirements that could impede our expansion opportunities or result in potential fines or penalties.
We may be required to obtain from municipal authorities operating franchises to install or expand certain facilities related to our fiber transport operations, our competitive local exchange carrier operations, and our facilities-based video services. Some of these franchises may require us to pay franchise fees. Many of our franchise agreements have compliance obligations and failure to comply may result in fines or penalties. In some cases, certain franchise requirements could delay us in expanding our operations or increase the costs of providing these services.
We are exposed to risks arising out of recent legislation affecting U.S. public companies.
Changing laws, regulations and standards relating to corporate governance and public disclosure, including the Sarbanes-Oxley Act and the Dodd-Frank Wall Street Reform and Consumer Protection Act, and related regulations implemented thereunder, have increased our legal and financial compliance costs and made some activities more time consuming. Any failure to successfully or timely complete annual assessments of our internal controls required by Section 404 of the Sarbanes-Oxley Act could subject us to sanctions or investigation by regulatory authorities. Any such action could adversely affect our financial results or our reputation with investors, lenders or others.
Changes in any of the above-described laws or regulations may limit our ability to plan, and could subject us to further costs or constraints.
From time to time, the laws or regulations governing us or our customers, or the government’s policy of enforcing those laws or regulations, have changed frequently and materially. The variability of these laws could hamper the ability of us and our customers to plan for the future or establish long-term strategies. Moreover, future changes in these laws or regulations could further increase our operating or compliance costs, or further restrict our operational flexibility, any of which could have a material adverse effect on our results of operations, competitive position, financial condition or prospects.
For a more thorough discussion of the regulatory issues that may affect our business, see "Business—Regulation" in Item 1 of Part I of our annual report on Form 10-K for year ended December 31, 2016.
Risks Affecting Our Liquidity and Capital Resources
Our high debt levels expose us to a broad range of risks.
We continue to carry significant debt. As of March 31, 2017, the aggregate principal amount of our consolidated long-term debt, excluding unamortized discounts, net, unamortized debt issuance costs and capital lease and other obligations, was $19.878 billion. As of the date of this report, $2.714 billion aggregate principal amount of this long-term debt is scheduled to mature prior to March 31, 2020. While we currently believe we will have the financial resources to meet or refinance our obligations when they come due, we cannot fully anticipate our future performance or financial condition, the future condition of the credit markets or the economy generally.
Our significant levels of debt can adversely affect us in several other respects, including:
limiting our ability to obtain additional financing for working capital, capital expenditures, acquisitions, refinancings or other general corporate purposes, particularly if, as discussed further in the risk factor disclosure below, (i) the ratings assigned to our debt securities by nationally recognized credit rating organizations are revised downward or (ii) we seek capital during periods of turbulent or unsettled market conditions;
requiring us to dedicate a substantial portion of our cash flow from operations to the payment of interest and principal on our debt, thereby reducing the funds available to us for other purposes, including acquisitions, capital expenditures, strategic initiatives, dividends, stock repurchases, marketing and other potential growth initiatives;
hindering our ability to capitalize on business opportunities and to plan for or react to changing market, industry, competitive or economic conditions;
increasing our future borrowing costs;
increasing the risk that third parties will be unwilling or unable to engage in hedging or other financial or commercial arrangements with us;
making us more vulnerable to economic or industry downturns, including interest rate increases;
placing us at a competitive disadvantage compared to less leveraged competitors;

increasing the risk that we will need to sell securities or assets, possibly on unfavorable terms, or take other unfavorable actions to meet payment obligations; or
increasing the risk that we may not meet the financial covenants contained in our debt agreements or timely make all required debt payments, either of which could result in the acceleration of some or all of our outstanding indebtedness.
The effects of each of these factors could be intensified if we increase our borrowings.
Any failure to make required debt payments could, among other things, adversely affect our ability to conduct operations or raise capital.
Our current debt agreements and the debt agreements of our subsidiaries allow us to incur significantly more debt, which could exacerbate the other risks described in this report.
The current terms of our debt instruments and the debt instruments of our subsidiaries permit us to incur additional indebtedness. Additional debt may be necessary for many reasons, including those discussed above. Incremental borrowings that impose additional financial risks could exacerbate the other risks described in this report.
We expect to periodically require financing, and we cannot assure you that we will be able to obtain such financing on terms that are acceptable to us, or at all.
We have a significant amount of indebtedness that we intend to refinance over the next several years, principally through the issuance of debt securities of CenturyLink, Inc., Qwest Corporation or both. Our ability to arrange additional financing will depend on, among other factors, our financial position, performance, and credit ratings, as well as prevailing market conditions and other factors beyond our control. Global financial markets continue to be unpredictable and volatile. Prevailing market conditions could be adversely affected by (i) general market conditions, such as disruptions in domestic or overseas sovereign or corporate debt markets, geo-political instabilities, contractions or limited growth in the economy or other similar adverse economic developments in the U.S. or abroad and (ii) specific conditions in the communications industry. Volatility in the global markets could limit our access to the credit markets, leading to higher borrowing costs or, in some cases, the inability to obtain financing on terms that are as favorable as those from which we previously benefited, on terms that are acceptable to us, or at all. Any such failure to obtain additional financing could jeopardize our ability to repay, refinance or reduce our debt obligations.
We may also need to obtain additional financing under a variety of other circumstances, including if:
revenues and cash provided by operations decline;
economic conditions weaken, competitive pressures increase or regulatory requirements change;
we engage in additional acquisitions or undertake substantial capital projects or other initiatives that increase our cash requirements;
we are required to contribute a material amount of cash to our pension plans;
we are required to begin to pay other post-retirement benefits earlier than anticipated;
our payments of federal income taxes increase faster or in greater amounts than currently anticipated; or
we become subject to significant judgments or settlements, including in connection with one or more of the matters discussed in Note 10—Commitments and Contingencies to our consolidated financial statements included elsewhere in this report.
For all the reasons mentioned above, we can give no assurance that additional financing for any of these purposes will be available on terms that are acceptable to us, or at all.
In addition, our ability to borrow funds in the future will depend in part on the satisfaction of the covenants in our credit facilities and other debt instruments. If we are unable to satisfy the covenants contained in those instruments, or are unable to generate cash sufficient to make required debt payments, the parties to whom we are indebted could accelerate the maturity of some or all of our outstanding indebtedness. Certain of our debt instruments have cross-default or cross-acceleration provisions. When present, these provisions could have a wider impact on liquidity than might otherwise arise from a default or acceleration of a single debt instrument.

As noted above, if we are unable to make required debt payments or refinance our debt, we would likely have to consider other options, such as selling assets, issuing additional securities, reducing or terminating our dividend payments, cutting costs or otherwise reducing our cash requirements, or negotiating with our lenders to restructure our applicable debt. Our current and future debt instruments may restrict, or market or business conditions may limit, our ability to do some of these things on favorable terms, or at all.
Any downgrade in the credit ratings of us or our affiliates could limit our ability to obtain future financing, increase our borrowing costs and adversely affect the market price of our existing debt securities or otherwise impair our business, financial condition and results of operations.
Nationally recognized credit rating organizations have issued credit ratings relating to CenturyLink, Inc.'s long-term debt and the long-term debt of several of its subsidiaries. Most of these ratings are below “investment grade”, which results in higher borrowing costs than "investment grade" debt as well as reduced marketability of our debt securities. There can be no assurance that any rating assigned to any of these debt securities will remain in effect for any given period of time or that any such ratings will not be lowered, suspended or withdrawn entirely by a rating agency if, in that rating agency’s judgment, circumstances so warrant.
A downgrade of any of these credit ratings could:
adversely affect the market price of some or all of our outstanding debt or equity securities;
limit our access to the capital markets or otherwise adversely affect the availability of other new financing on favorable terms, if at all;
trigger the application of restrictive covenants in certain of our debt agreements or result in new or more restrictive covenants in agreements governing the terms of any future indebtedness that we may incur;
increase our cost of borrowing; and
impair our business, financial condition and results of operations.
Following the announcement of our pending acquisition of Level 3, the three principal domestic credit rating organizations placed our senior unsecured debt ratings on review for downgrade, on negative watch or on watch with negative implications. For more information, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations - Liquidity and Capital Resources - Debt and Other Financing Arrangements” in Item 2 of Part I of this report.
Under certain circumstances upon a change of control, we will be obligated to offer to repurchase certain of our outstanding debt securities, which could have certain adverse ramifications.
If the credit ratings relating to certain of our currently outstanding long-term debt securities are downgraded in the manner specified thereunder in connection with a “change of control” of CenturyLink, Inc., then we will be required to offer to repurchase such debt securities. If, due to lack of cash, legal or contractual impediments, or otherwise, we fail to offer to repurchase such debt securities, such failure could constitute an event of default under such debt securities, which could in turn constitute a default under other of our agreements relating to our indebtedness outstanding at that time. Moreover, the existence of these repurchase covenants may in certain circumstances render it more difficult or discourage a sale or takeover of us, or the removal of our incumbent directors.
Our business requires us to incur substantial capital and operating expenses, which reduce our available free cash flow.
Our business is capital intensive, and we anticipate that our capital requirements will continue to be significant in the coming years.
We expect to invest additional capital to expand and enhance our network infrastructure as a result of several factors, including:
our regulatory commitments, including infrastructure construction requirements arising out of our participation in the FCC's CAF Phase 2 program, which are discussed further herein;
increased demands by customers to transmit larger amounts of data at faster speeds;
changes in customers' service requirements;
technological advances of our competitors; or
the development and launch of new services.

We may be unable to expand or adapt our network infrastructure to respond to these developments in a timely manner, at a commercially reasonable cost or on terms producing satisfactory returns on our investment.
In addition to investing in expanded networks, new products or new technologies, we must from time to time invest capital to (i) replace some of our aging equipment that supports many of our legacy services that are experiencing revenue declines or (ii) convert older systems to simplify and modernize our network. While we believe that our currently planned level of capital expenditures will meet both our maintenance and core growth requirements, this may not be the case if demands on our network continue to accelerate or other circumstances underlying our expectations change. Increased spending could, among other things, adversely affect our operating margins, cash flows, results of operations and financial position.
Similarly, we continue to anticipate incurring substantial operating expenses to support our incumbent services and growth initiatives. We may be unable to sufficiently manage or reduce these costs, even if revenues in some of our lines of business are decreasing. If so, our operating margins will be adversely impacted.
Our senior notes are unsecured and will be effectively subordinated to any secured indebtedness.
Our currently outstanding senior notes are unsecured and are effectively subordinated to any of our existing or future secured indebtedness, to the extent of the value of the assets securing such indebtedness, including, upon consummation of the Level 3 acquisition, any newly-incurred acquisition financing to the extent secured by subsidiary guarantees or pledges of stock of selected subsidiaries. In the event of a bankruptcy or similar proceeding, collateral for any secured indebtedness would generally be available to satisfy our obligations under such secured indebtedness, and would not be expected to be available to satisfy other claims.
As a holding company, we rely on payments from our operating companies to meet our obligations.
As a holding company, substantially all of our income and operating cash flow is dependent upon the earnings of our subsidiaries and their distribution of those earnings to us in the form of dividends, loans or other payments. As a result, we rely upon our subsidiaries to generate the funds necessary to meet our obligations, including the payment of amounts owed under our long-term debt. Our subsidiaries are separate and distinct legal entities and have no obligation to pay any amounts owed by us or, subject to limited exceptions for tax-sharing or cash management purposes, to make any funds available to us to repay our obligations, whether by dividends, loans or other payments. State law applicable to each of our subsidiaries restricts the amount of dividends that they may pay. Restrictions that have been or may be imposed by state regulators (either in connection with obtaining necessary approvals for our acquisitions or in connection with our regulated operations), and restrictions imposed by credit instruments or other agreements applicable to certain of our subsidiaries may limit the amount of funds that our subsidiaries are permitted to transfer to us, including the amount of dividends that may be paid to us. Moreover, our rights to receive assets of any subsidiary upon its liquidation or reorganization will be effectively subordinated to the claims of creditors of that subsidiary, including trade creditors. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources” included elsewhere in this report for further discussion of these matters.
We cannot assure you that we will continue paying dividends at the current rates, or at all.
For the reasons noted below, we cannot assure you that we will continue periodic dividends on our capital stock at the current rates, or at all.
As noted in the immediately preceding risk factor, because we are a holding company with no material assets other than the stock of our subsidiaries, our ability to pay dividends will depend on the earnings and cash flow of our subsidiaries and their ability to furnish funds to us in the form of dividends, loans or other payments.
Any quarterly dividends on our common stock and our outstanding shares of preferred stock will be paid from funds legally available for such purpose when, as and if declared by our Board of Directors. Decisions on whether, when and in which amounts to continue making any future dividend distributions will remain at all times entirely at the discretion of our Board of Directors, which reserves the right to change or terminate our dividend practices at any time and for any reason without prior notice, including without limitation any of the following:
our supply of cash or other liquid assets is anticipated to remain under pressure due to declining cash flows from operating activities, increased payments of post-retirement benefits and our projected payment of higher cash taxes prior to the pending Level 3 acquisition and might be further negatively impacted by any of the potential adverse events or developments described in this report, including (i) changes in competition, regulation, federal and state support, technology, taxes, capital markets, operating costs or litigation costs, or (ii) the impact of any liquidity shortfalls caused by the below-described restrictions on the ability of our subsidiaries to lawfully transfer cash to us;

our cash requirements or plans might change for a wide variety of reasons, including changes in our capital allocation plans (including a desire to retain or accumulate cash), capital spending plans, stock purchase plans, acquisition strategies, strategic initiatives, debt payment plans (including a desire to maintain or improve credit ratings on our debt securities), pension funding payments, or financial position;
our ability to service and refinance our current and future indebtedness and our ability to borrow or raise additional capital to satisfy our capital needs;
the amount of dividends that we may distribute to our shareholders is subject to restrictions under Louisiana law and restrictions imposed by our existing or future credit facilities, debt securities, outstanding preferred stock securities, leases and other agreements, including restricted payment and leverage covenants; and
the amount of cash that our subsidiaries may make available to us, whether by dividends, loans or other payments, may be subject to the legal, regulatory and contractual restrictions described in the immediately preceding risk factor.
Based on its evaluation of these and other relevant factors, our Board of Directors may, in its sole discretion, decide not to declare a dividend on our common stock or our outstanding shares of preferred stock for any period for any reason without prior notice, regardless of whether we have funds legally available for such purposes. Holders of our equity securities should be aware that they have no contractual or other legal right to receive dividends.
Similarly, holders of our common stock should be aware that repurchases of our common stock under any repurchase plan then in effect are completely discretionary, and may be suspended or discontinued at any time for any reason regardless of our financial position.
Our current dividend practices could limit our ability to deploy cash for other beneficial purposes.
The current practice of our Board of Directors to pay common share dividends reflects a current intention to distribute to our shareholders a substantial portion of our cash flow. As a result, we may not retain a sufficient amount of cash to apply to other transactions that could be beneficial to our shareholders or debtholders, including stock buybacks, debt prepayments or capital expenditures that strengthen our business. In addition, our ability to pursue any material expansion of our business through acquisitions or increased capital spending may depend more than it otherwise would on our ability to obtain third party financing.
We cannot assure you whether, when or in what amounts we will be able to use our net operating loss carryforwards, or when they will be depleted.
At December 31, 2016, we had state NOL carryforwards of approximately $11.9 billion. A significant portion of the state NOL carryforwards are generated in states where separate company income tax returns are filed and our subsidiaries that generated the losses may not have the ability to generate income in sufficient amounts to realize these losses. In addition, certain of these state NOL carryforwards will be limited by state laws related to ownership changes. As a result, we expect to utilize only a small portion of the state NOL carryforwards, and consequently have determined that as of December 31, 2016, these state NOL carryforwards, net of federal benefit, had a net tax benefit (after valuation allowance) of $131 million.
Increases in costs for pension and healthcare benefits for our active and retired employees may reduce our profitability and increase our funding commitments.
With approximately 36,000 active employees, approximately 72,000 active and retired employees and surviving spouses eligible for post-retirement benefits, approximately 68,000 pension retirees and approximately 14,000 former employees with vested pension benefits participating in our benefit plans as of December 31, 2016, the costs of pension and healthcare benefits for our active and retired employees have a significant impact on our profitability. Our costs of maintaining our pension and healthcare plans, and the future funding requirements for these plans, are affected by several factors, most of which are outside our control, including:
decreases in investment returns on funds held by our pension and other benefit plan trusts;
changes in prevailing interest rates and discount rates or other factors used to calculate the funding status of our pension and other post-retirement plans;
increases in healthcare costs generally or claims submitted under our healthcare plans specifically;
increasing longevity of our employees and retirees;
the impact of the continuing implementation, modification or potential repeal of current federal healthcare legislation and regulations promulgated thereunder;

increases in the number of retirees who elect to receive lump sum benefit payments;
increases in insurance premiums we are required to pay to the Pension Benefit Guaranty Corporation, an independent agency of the United States government that must cover its own underfunded status by collecting premiums from an ever shrinking population of pension plans that are qualified under the U.S. tax code;
changes in plan benefits; and
changes in funding laws or regulations.
Increased costs under these plans could reduce our profitability and increase our funding commitments to our pension plans. Any future material cash contributions could have a negative impact on our liquidity by reducing our cash flows available for other purposes. Similarly, depletion of assets placed in trust by us to fund these benefits, such as those discussed elsewhere herein, will similarly reduce our liquidity by reducing our cash flows available for other purposes.
As of December 31, 2016, our pension plans and our other post-retirement benefit plans were substantially underfunded from an accounting standpoint. See Note 9—Employee Benefits to our consolidated financial statements included in Item 8 of our annual report on Form 10-K for the year ended December 31, 2016. For more information on our obligations under our defined benefit pension plans and other post-retirement benefit plans, please see “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources—Pension and Post-retirement Benefit Obligations” included in Item 2 of Part I of this report.
For additional information concerning our liquidity and capital resources, see Item 2 of Part I of this report. For a discussion of certain currency and liquidity risks associated with our international operations, see "Risk Factors—Risks Affecting Our Business—Our international operations expose us to various regulatory, currency, tax, legal and other risks."
Other Risks
We face risks from natural disasters, which can disrupt our operations and cause us to incur substantial additional capital and operating costs.
A substantial number of our facilities are located in Florida, Alabama, Louisiana, Texas, North Carolina, South Carolina and other coastal states, which subjects them to the risks associated with severe tropical storms, hurricanes and tornadoes, including downed telephone lines, flooded facilities, power outages, fuel shortages, damaged or destroyed property and equipment, and work interruptions. Although we maintain property and casualty insurance on our property (excluding our above ground outside plant) and may, under certain circumstances, be able to seek recovery of some additional costs through increased rates, only a portion of our additional costs directly related to such natural disasters have historically been recoverable. We cannot predict whether we will continue to be able to obtain insurance for catastrophic hazard-related damages or, if obtainable and carried, whether this insurance will be adequate to cover our losses. In addition, we expect any insurance of this nature to be subject to substantial deductibles, retentions and coverage exclusions, and the premiums to be based on our loss experience. For all these reasons, any future hazard-related costs and work interruptions could adversely affect our operations and our financial condition.
If conditions or assumptions differ from the judgments, assumptions or estimates used in our critical accounting policies, our consolidated financial statements and related disclosures could be materially affected.
The preparation of financial statements and related disclosures in conformity with U.S. generally accepted accounting principles requires management to make judgments, assumptions and estimates that affect the amounts reported in our consolidated financial statements and accompanying notes. Our critical accounting policies, which are described in “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates” in Item 7 of Part II of our annual report on Form 10-K for the year ended December 31, 2016, describe those significant accounting policies and methods used in the preparation of our consolidated financial statements that are considered “critical” because they require judgments, assumptions and estimates that materially impact our consolidated financial statements and related disclosures. As a result, if future events or assumptions differ significantly from the judgments, assumptions and estimates in our critical accounting policies, these events or assumptions could have a material impact on our consolidated financial statements and related disclosures.

While frequently presented with numeric specificity, the guidance and other forward-looking statements that we disseminate from time to time is based on numerous variables and assumptions (including, but not limited to, those related to industry performance and competition and general business, economic, market and financial conditions and additional matters specific to our business, as applicable) that are inherently subjective and speculative and are largely beyond our control. As a result, actual results may differ materially from our guidance or other forward-looking statements. For additional information, see "Special Note Regarding Forward-Looking Statements and Related Matters" in Item 1 of Part I of our annual report on Form 10-K for the year ended December 31, 2016.
Lapses in disclosure controls and procedures or internal control over financial reporting could materially and adversely affect our operations, profitability or reputation.
There can be no assurance that our disclosure controls and procedures will be effective in the future or that we will not experience a material weakness or significant deficiency in internal control over financial reporting. Any such lapses or deficiencies may materially and adversely affect our business, operating results or financial condition, restrict our ability to access the capital markets, require us to expend significant resources to correct the lapses or deficiencies, expose us to regulatory or legal proceedings, including litigation brought by private individuals, subject us to fines, penalties or judgments, harm our reputation, or otherwise cause a decline in investor confidence and our stock price.
If our goodwill or other intangible assets become impaired, we may be required to record a significant charge to earnings and reduce our stockholders' equity.
As of March 31, 2017, approximately 51% of our total consolidated assets reflected on the consolidated balance sheet included in this report consisted of goodwill (excluding goodwill assigned to the colocation business and included in assets held for sale), customer relationships and other intangible assets. Under U.S. generally accepted accounting principles, most of these intangible assets must be tested for impairment on an annual basis or more frequently whenever events or circumstances indicate that their carrying value may not be recoverable. From time to time (most recently for the third quarter of 2013), we have recorded large non-cash charges to earnings in connection with required reductions of the value of our intangible assets. If our intangible assets are determined to be impaired in the future, we may be required to record additional significant, non-cash charges to earnings during the period in which the impairment is determined to have occurred. Any such charges could, in turn, have a material adverse effect on our results of operation, financial condition or ability to comply with financial covenants in our debt instruments.
Tax audits or changes in tax laws could adversely affect us.
Like all large businesses, we are subject to frequent and regular audits by the Internal Revenue Service as well as state and local tax authorities. These audits could subject us to tax liabilities if adverse positions are taken by these tax authorities.
We believe that we have adequately provided for tax contingencies. However, our tax audits and examinations may result in tax liabilities that differ materially from those that we have recognized in our consolidated financial statements. Because the ultimate outcomes of all of these matters are uncertain, we can give no assurance as to whether an adverse result from one or more of them will have a material effect on our financial results.
Legislators and regulators at all levels of government may from time to time change existing tax laws or regulations or enact new laws or regulations that could negatively impact our operating results or financial condition. The new U.S. Presidential administration has proposed changes to fiscal and tax policies, which may include comprehensive tax reform. Although we cannot at this time predict the impact of these changes on our business, they could be material.
Our agreements and organizational documents and applicable law could limit another party’s ability to acquire us.
A number of provisions in our agreements and organizational documents and various provisions of applicable law may delay, defer or prevent a future takeover of CenturyLink unless the takeover is approved by our Board of Directors. These provisions could deprive our shareholders of any related takeover premium. For additional information, please see our Registration Statement on Form 8-A/A filed with the SEC on March 2, 2015.



ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
Issuer Purchases of Equity Securities
The following table contains information about shares of our previously-issued common stock that we withheld from employees upon vesting of their stock-based awards during the first quarter of 20172018 to satisfy the related minimum tax withholding obligations:
 
Total Number of
Shares Withheld
for Taxes
 
Average Price Paid
Per Share
Period   
January 201732,155
 $24.43
February 2017363,514
 24.51
March 2017201,236
 22.95
Total596,905
  
 
Total Number of
Shares Withheld
for Taxes
 
Average Price Paid
Per Share
Period   
January 2018128,717
 $15.45
February 2018764,257
 18.11
March 2018545,083
 17.50
Total1,438,057
  


ITEM 6. EXHIBITS
Exhibits identified in parentheses below are on file with the SEC and are incorporated herein by reference. All other exhibits are provided as part of this electronic submission.
Exhibit
Number
Description
2.1
3.1
3.2
4.1
4.2InstrumentsInstrument relating to Credit Agreement assumed by CenturyLink, Inc.'s Revolving Credit Facility. on November 1, 2017.
 a.Amended and Restated
b.
b.Guarantee Agreement, dated as of April 6, 2012, by and among the original guarantors named therein (incorporated by reference to Exhibit 4.2 of CenturyLink, Inc.'s Current Report on Form 8-K (File No. 001-07784) filed with the Securities and Exchange Commission on April 11, 2012), as assumed by two additional guarantors under an assumption agreement, dated as of May 23, 2013 (incorporated by reference to Exhibit 4.2(b) of CenturyLink, Inc.'s Quarterly Report on Form 10-Q for the period ended June 30, 2013 (File No. 001-07784) filed with the Securities and Exchange Commission on August 8, 2013), as amended by the Amendment to Guarantee Agreement and Reaffirmation Agreement, dated as of December 3, 2014, among CenturyLink, Inc. and the affiliated guarantors named therein (incorporated by reference to Exhibit 4.4 of CenturyLink, Inc.'s Current Report on Form 8-K (File No. 001-07784) filed with the Securities and Exchange Commission on December 5, 2014).
4.3Instruments relating to CenturyLink, Inc.'s Term Loan.
a.Credit Agreement, dated as of April 18, 2012, by and among CenturyLink, Inc., the several banks and other financial institutions or entities from time to time parties thereto, and CoBank, ACB, as administrative agent (incorporated by reference to Exhibit 4.1 of CenturyLink, Inc.'s Current Report on Form 8-K (File No. 001-07784) filed with the Securities and Exchange Commission on April 20, 2012), as amended by the amendment dated as of March 13, 2015.
b.Guarantee Agreement, dated as of April 18, 2012, by and among the original guarantors named therein (incorporated by reference to Exhibit 4.2 of CenturyLink, Inc.'s Current Report on Form 8-K (File No. 001-07784) filed with the Securities and Exchange Commission on April 20, 2012), as assumed by two additional guarantors under an assumption agreement, dated as of May 23, 2013 (incorporated by reference to Exhibit 4.3(b) of CenturyLink, Inc.'s Quarterly Report on Form 10-Q for the period ended June 30, 2013 (File No. 001-07784) filed with the Securities and Exchange Commission on August 8, 2013), as amended by the amendment dated as of March 13, 2015 (incorporated by reference to Exhibit 4.3(b) of CenturyLink's Quarterly Report on Form 10-Q for the period ended March 31, 2015 (File No. 001-07784) filed with the Securities and Exchange Commission on May 6, 2015).
4.4
Instruments relating to CenturyLink, Inc.'s public senior debt.(1)
 a.Indenture, dated as of March 31, 1994, by and between Century Telephone Enterprises, Inc. (currently named CenturyLink, Inc.) and Regions Bank (successor-in-interest to First American Bank & Trust of Louisiana), as Trustee.
  (i).Form of 7.2% Senior Notes, Series D, due 2025 (incorporated by reference to Exhibit 4.27 of CenturyLink, Inc.'s annual report on Form 10-K for the year ended December 31, 1995 (File No. 001-07784) filed with the Securities and Exchange Commission on March 18, 1996).

Exhibit
Number
Description
  (ii).Form of 6.875% Debentures, Series G, due 2028, (incorporated by reference to Exhibit 4.9 of CenturyLink, Inc.'s annual report on Form 10-K for the year ended December 31, 1997 (File No. 001-07784) filed with the Securities and Exchange Commission on March 16, 1998).
 b.
  (i).
 c.
  (i).

Exhibit
Number
Description
 d.
  (i).
 e.
  (i).
 f.
  (i).
 g.
  (i).
 h.

Exhibit
Number
Description
  (i).
4.54.4
Instruments relating to indebtedness of Qwest Communications International, Inc. and its subsidiaries.(1)
 a.
  (i).
 b.

Exhibit
Number
Description
  (i).
 c.Indenture, dated as of June 29, 1998, by and among U S WEST Capital Funding, Inc. (currently named Qwest Capital Funding, Inc.), U S WEST, Inc. (predecessor to Qwest Communications International Inc.) and The First National Bank of Chicago, as trustee (incorporated by reference to Exhibit 4(a) of U S WEST, Inc.'s Current Report on Form 8-K (File No. 001-14087) filed with the Securities and Exchange Commission on November 18, 1998).
  (i).
 d.Indenture, dated as of October 15, 1999, by and between US West Communications, Inc. (currently named Qwest Corporation) and Bank One Trust Company, N.A., as trustee (incorporated by reference to Exhibit 4(b) of Qwest Corporation's annual report on Form 10-K for the year ended December 31, 1999 (File No. 001-03040) filed with the Securities and Exchange Commission on March 3, 2000).
  (i).
  (ii).
  (iii).
  (iv).
  (v).

Exhibit
Number
Description
  (vi).
  (vii).
  (viii).
  (ix).
  (x).

Exhibit
Number
Description
 e.
4.64.5
Instruments relating to indebtedness of Embarq Corporation.(1)
 a.
 b.
4.6
Instruments relating to indebtedness of Level 3 Communications, Inc. and its subsidiaries.(1)
a.
(i).
(ii).
(iii).
b.
(i).
(ii).

Exhibit
Number
Description
(iii).
c.
(i).
d.
(i).
(ii).
(iii).
e.
(i).

Exhibit
Number
Description
(ii).
(iii).
f.
(i).
(ii).
(iii).
g.
(i).
(ii).

Exhibit
Number
Description
(iii).
h.
(i).
(ii).
(iii).
i.
4.7IntercompanyCertain intercompany debt instruments.
 a.
 b.
 c.
10.2Stock-based Incentive Plans and Agreements of CenturyLink
a.Amended and Restated 2005 Directors Stock Plan, as amended and restated through February 23, 2010 (incorporated by reference to Exhibit 10.2(f) of CenturyLink, Inc.'s annual report on Form 10-K for the year ended December 31, 2009 (File No. 001-07784) filed with the Securities and Exchange Commission on March 1, 2010).
(i).Form of Restricted Stock Agreement, pursuant to the foregoing plan, entered into between CenturyLink, Inc. and each of its outside directors as of May 12, 2006 (incorporated by reference to Exhibit 10.1 of CenturyLink,Qwest Communications International Inc.'s Quarterly Report on Form 10-Q for the period ended JuneSeptember 30, 20062012 (File No. 001-07784)001-15577) filed with the Securities and Exchange Commission on August 3, 2006).November 13, 2012), as amended and restated by the Amended and Restated Revolving Promissory Note, dated as of September 30, 2017, by and between Qwest Communications International Inc. and an affiliate of CenturyLink, Inc.

Exhibit
Number
Description
10.1(ii).Form of Restricted Stock Agreement, pursuant to the foregoing plan, entered into between CenturyLink, Inc. and each of its outside directors as of May 11, 2007 (incorporated by reference to Exhibit 10.2(f) (iii) of CenturyLink, Inc.'s annual report on Form 10-K for the period ended December 31, 2008 (File No. 001-07784) filed with the Securities and Exchange Commission on February 27, 2009).
(iii).Form of Restricted Stock Agreement, pursuant to the foregoing plan, entered into between CenturyLink, Inc. and each of its outside directors as of May 9, 2008 (incorporated by reference to Exhibit 10.2 (f) (iv) of CenturyLink, Inc.'s annual report on Form 10-K for the period ended December 31, 2008 (File No. 001-07784) filed with the Securities and Exchange Commission on February 27, 2009).
(iv).Form of Restricted Stock Agreement, pursuant to the foregoing plan and dated as of May 8, 2009, entered into between CenturyLink, Inc. and each of its outside directors on such date who remained on the Board following July 1, 2009 (incorporated by reference to Exhibit 10.2(b) of CenturyLink, Inc.'s Quarterly Report on Form 10-Q for the period ended June 30, 2009 (File No. 001-07784) filed with the Securities and Exchange Commission on August 7, 2009).
(v).Form of Restricted Stock Agreement, pursuant to the foregoing plan and dated as of May 8, 2009, entered into between CenturyLink, Inc. and each of its outside directors who retired on July 1, 2009 (incorporated by reference to Exhibit 10.2(c) of CenturyLink, Inc.'s Quarterly Report on Form 10-Q for the period ended June 30, 2009 (File No. 001-07784) filed with the Securities and Exchange Commission on August 7, 2009).
(vi).Form of Restricted Stock Agreement, pursuant to the foregoing plan and dated as of July 2, 2009, entered into between CenturyLink, Inc. and each of its outside directors named to the Board on July 1, 2009 (incorporated by reference to Exhibit 10.1(d) of CenturyLink, Inc.'s Quarterly Report on Form 10-Q for the period ended June 30, 2009 (File No. 001-07784) filed with the Securities and Exchange Commission on August 7, 2009).
(vii).Restricted Stock Agreement, pursuant to the foregoing plan and dated as of July 2, 2009, entered into between CenturyLink, Inc. and William A. Owens in payment of Mr. Owens' 2009 supplemental chairman's fees (incorporated by reference to Exhibit 10.2(e) of CenturyLink, Inc.'s Quarterly Report on Form 10-Q for the period ended June 30, 2009 (File No. 001-07784) filed with the Securities and Exchange Commission on August 7, 2009).
(viii).Form of Restricted Stock Agreement, pursuant to the foregoing plan and dated as of May 21, 2010, entered into between CenturyLink, Inc. and seven of its outside directors on such date (incorporated by reference to Exhibit 10.1 of CenturyLink, Inc.'s Quarterly Report on Form 10-Q for the period ended June 30, 2010 (File No. 001-07784) filed with the Securities and Exchange Commission on August 6, 2010).
b.Amended and Restated 2005 Management Incentive Compensation Plan, as amended and restated through February 23, 2010 (incorporated by reference to Exhibit 10.2(g) of CenturyLink, Inc.'s annual report on Form 10-K for the year ended December 31, 2009 (File No. 001-07784) filed with the Securities and Exchange Commission on March 1, 2010).
(i).Form of Stock Option Agreement, pursuant to the foregoing plan and dated as of February 21, 2006, entered into between CenturyLink, Inc. and its executive officers (incorporated by reference to Exhibit 10.2(g) (iii) of CenturyLink, Inc.'s annual report on Form 10-K for the year ended December 31, 2005 (File No. 001-07784) filed with the Securities and Exchange Commission on March 16, 2006).
(ii).Form of Stock Option Agreement, pursuant to the foregoing plan and dated as of February 26, 2007, entered into between CenturyLink, Inc. and its executive officers (incorporated by reference to Exhibit 10.1 of CenturyLink, Inc.'s Quarterly Report on Form 10-Q for the period ended March 31, 2007 (File No. 001-07784) filed with the Securities and Exchange Commission on May 9, 2007).
c.
  (i).

Exhibit
Number
Description
  (ii).
10.3(iii).
(iv).
10.2
Key Employee Incentive Compensation Plan, dated as of January 1, 1984, as amended and restated as of November 16, 1995 (incorporated by reference to Exhibit 10.1(f) of CenturyLink, Inc.'s annual report on Form 10-K for the year ended December 31, 1995 (File No. 001-07784) filed with the Securities and Exchange Commission on March 18, 1996) and amendment thereto dated as of November 21, 1996 (incorporated by reference to Exhibit 10.1(f) of CenturyLink, Inc.'s annual report on Form 10-K for the year ended December 31, 1996 (File No. 001-07784) filed with the Securities and Exchange Commission on March 17, 1997), amendment thereto dated as of February 25, 1997 (incorporated by reference to Exhibit 10.2 of CenturyLink, Inc.'s Quarterly Report on Form 10-Q for the period ended March 31, 1997 (File No. 001-07784) filed with the Securities and Exchange Commission on May 8, 1997), amendment thereto dated as of April 25, 2001 (incorporated by reference to Exhibit 10.2 of CenturyLink, Inc.'s Quarterly Report on Form 10-Q for the period ended March 31, 2001 (File No. 001-07784) filed with the Securities and Exchange Commission on May 15, 2001),amendment thereto dated as of April 17, 2000 (incorporated by reference to Exhibit 10.3(a) of CenturyLink, Inc.'s annual report on Form 10-K for the year ended December 31, 2001 (File No. 001-07784) filed with the Securities and Exchange Commission on March 15, 2002)and amendment thereto dated as of February 27, 2007 (incorporated by reference to Exhibit 10.1 of CenturyLink, Inc.'s Quarterly Report on Form 10-Q for the period ended June 30, 2007 (File No. 001-07784) filed with the Securities and Exchange Commission on August 8, 2007).
10.410.3
10.510.4
10.610.5Amended and Restated Salary Continuation (Disability) Plan for Officers, dated as of November 26, 1991 (incorporated by reference to Exhibit 10.16 of CenturyLink, Inc.'s annual report on Form 10-K for the year ended December 31, 1991).
10.710.6
10.810.7
10.910.8

10.10
Exhibit
Number
Description
10.9
10.1110.10
10.1210.11
10.1310.12

10.13
Number
Description
10.14
10.15
10.16Certain Material Agreements and Plans of Embarq Corporation.Key Subsidiaries
 a.
 b.
 c.
 d.
10.15Certain Material Agreements and Plans of Qwest Communications International Inc. or Savvis, Inc.
 a.e.

Exhibit
Number
Description
 b.f.
Forms of restricted stock, performance share and option agreements used under Equity Incentive Plan, as amended and restated (incorporated by reference to Exhibit 10.2 of Qwest Communications International Inc.'s Current Report on Form 8-K (File No. 001-15577) filed with the Securities and Exchange Commission on October 24, 2005; 2005; Exhibit 10.2 of Qwest Communication International Inc.'s annual report on Form 10-K for the year ended December 31, 2005 (File No. 001-15577) filed with the Securities and Exchange Commission on February 16, 2006; 2006; Exhibit 10.2 of Qwest Communication International Inc.'s Quarterly Report on Form 10-Q for the period ended March 31, 2006 (File No. 001-15577) filed with the Securities and Exchange Commission on May 3, 2006; 2006; Exhibit 10.2 of Qwest Communication International Inc.'s annual report on Form 10-K for the year ended December 31, 2006 (File No. 001-15577) filed with the Securities and Exchange Commission on February 8, 2007; 2007; Exhibit 10.3 of Qwest Communication International Inc.'s Current Report on Form 8-K (File No. 001-15577) filed with the Securities and Exchange Commission on September 15, 2008;2008; Exhibit 10.2 of Qwest Communication International Inc.'s Quarterly Report on Form 10-Q for the period ended March 31, 2009 (File No. 001-15577) filed with the Securities and Exchange Commission on April 30, 2009; 2009; and Exhibit 10.2 of Qwest Communication International Inc.'s annual report on Form 10-K for the year ended December 31, 2010 (File No. 001-15577) filed with the Securities and Exchange Commission on February 15, 2011).
 c.g.
 d.h.

Exhibit
Number
Description
 e.i.
j.
10.17
12*
31.1*
31.2*
32*

Exhibit
Number
Description
101*Financial statements from the Quarterly Report on Form 10-Q of CenturyLink, Inc. for the period ended March 31, 2017,2018, formatted in XBRL: (i) the Consolidated Statements of Operations, (ii) the Consolidated Statements of Comprehensive Income, (iii) the Consolidated Balance Sheets, (iv) the Consolidated Statements of Cash Flows, (v) the Consolidated Statements of Stockholders' Equity and (vi) the Notes to Consolidated Financial Statements.
*Exhibit filed herewith.

(1) 
Certain of the items in Sections 4.4, 4.5, 4.6, 4.7 and 4.64.8 (i) omit supplemental indentures or other instruments governing debt that has been retired, or (ii) refer to trustees who may have been replaced, acquired or affected by similar changes. In accordance with Item 601(b) (4) (iii) (A) of Regulation S-K, copies of certain instruments defining the rights of holders of certain of our long-term debt are not filed herewith. Pursuant to this regulation, we hereby agree to furnish a copy of any such instrument to the SEC upon request.



SIGNATURE

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 on May 4, 2017.10, 2018.

 CENTURYLINK, INC.
 By:/s/ DAVID D. COLEEric J. Mortensen
 
David D. ColeEric J. Mortensen
ExecutiveSenior Vice President - Interim Controller and Operations Support
 (ChiefPrincipal Accounting Officer)

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