LUMEN TECHNOLOGIES, INC., 10-K filed on 2/22/2024
Annual Report
v3.24.0.1
Cover Page - USD ($)
$ in Billions
12 Months Ended
Dec. 31, 2023
Feb. 20, 2024
Jun. 30, 2023
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-7784    
Entity Registrant Name Lumen Technologies, Inc.    
Entity Incorporation, State or Country Code LA    
Entity Tax Identification Number 72-0651161    
Entity Address, Address Line One 100 CenturyLink Drive,    
Entity Address, City or Town Monroe,    
Entity Address, State or Province LA    
Entity Address, Postal Zip Code 71203    
City Area Code 318    
Local Phone Number 388-9000    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction true    
Document Financial Statement Restatement Recovery Analysis false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   1,009,755,821  
Entity Public Float     $ 2.3
Documents Incorporated by Reference
Portions of the Registrant's Proxy Statement to be furnished in connection with the 2024 annual meeting of shareholders are incorporated by reference in Part III of this report.
   
Entity Central Index Key 0000018926    
Amendment Flag false    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Common Stock      
Document Information [Line Items]      
Title of 12(b) Security Common Stock, par value $1.00 per share    
Trading Symbol LUMN    
Security Exchange Name NYSE    
Preferred Stock      
Document Information [Line Items]      
Title of 12(b) Security Preferred Stock Purchase Rights    
No Trading Symbol Flag true    
Security Exchange Name NYSE    
v3.24.0.1
Audit Information
12 Months Ended
Dec. 31, 2023
Audit Information [Abstract]  
Auditor Name KPMG LLP
Auditor Location Denver, Colorado
Auditor Firm ID 185
v3.24.0.1
CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
shares in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Statement [Abstract]      
OPERATING REVENUE $ 14,557,000,000 $ 17,478,000,000 $ 19,687,000,000
OPERATING EXPENSES      
Cost of services and products (exclusive of depreciation and amortization) 7,144,000,000 7,868,000,000 8,488,000,000
Selling, general and administrative 3,198,000,000 3,078,000,000 2,895,000,000
Net loss (gain) on sale of businesses 121,000,000 (113,000,000) 0
Loss on disposal groups held for sale 0 40,000,000 0
Depreciation and amortization 2,985,000,000 3,239,000,000 4,019,000,000
Goodwill impairment 10,693,000,000 3,271,000,000 0
Total operating expenses 24,141,000,000 17,383,000,000 15,402,000,000
OPERATING (LOSS) INCOME (9,584,000,000) 95,000,000 4,285,000,000
OTHER EXPENSE      
Interest expense (1,158,000,000) (1,332,000,000) (1,522,000,000)
Net gain on early retirement of debt (Note 7) 618,000,000 214,000,000 8,000,000
Other (expense) income, net (113,000,000) 32,000,000 (70,000,000)
Total other expense, net (653,000,000) (1,086,000,000) (1,584,000,000)
(LOSS) INCOME BEFORE INCOME TAXES (10,237,000,000) (991,000,000) 2,701,000,000
Income tax expense 61,000,000 557,000,000 668,000,000
NET (LOSS) INCOME $ (10,298,000,000) $ (1,548,000,000) $ 2,033,000,000
BASIC AND DILUTED (LOSS) EARNINGS PER COMMON SHARE      
BASIC (in dollars per share) $ (10.48) $ (1.54) $ 1.92
DILUTED (in dollars per share) $ (10.48) $ (1.54) $ 1.91
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING      
BASIC (in shares) 983,081 1,007,517 1,059,541
DILUTED (in shares) 983,081 1,007,517 1,066,778
v3.24.0.1
CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Statement of Comprehensive Income [Abstract]      
NET (LOSS) INCOME $ (10,298) $ (1,548) $ 2,033
Items related to employee benefit plans:      
Change in net actuarial loss, net of $20, $(205) and $(134) tax (59) 631 424
Reclassification of net actuarial loss to (loss) gain on the sale of businesses, net of $—, $(142) and $— tax (22) 422 0
Settlement charges recognized in net (loss) income, net of $—, $— and $(93) tax 0 0 290
Change in net prior service cost, net of $4, $(9) and $(5) tax (11) 30 14
Reclassification of prior service credit to (loss) gain on the sale of businesses, net of $—, $6 and $— tax 0 (19) 0
Reclassification of realized loss on interest rate swaps to net (loss) income, net of $—, $(5) and $(20) tax 0 17 63
Unrealized holding loss on interest rate swaps, net of $—, $— and $— tax 0 0 (1)
Reclassification of realized loss on foreign currency translation to (loss) gain on the sale of businesses, net of $—, $— and $— tax 382 112 0
Foreign currency translation adjustment, net of $(3), $58 and $30 tax (1) (134) (135)
Other comprehensive income 289 1,059 655
COMPREHENSIVE (LOSS) INCOME $ (10,009) $ (489) $ 2,688
v3.24.0.1
CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Statement of Comprehensive Income [Abstract]      
Change in net actuarial loss, tax $ 20 $ (205) $ (134)
Reclassification of net actuarial loss to (loss) gain on the sale of business, tax 0 (142) 0
Settlement charge, tax 0 0 (93)
Change in net prior service cost, tax 4 (9) (5)
Reclassification of prior service credit to (loss) gain on the sale of business, tax 0 6 0
Reclassification of realized loss on interest rate swaps to net income, tax 0 (5) (20)
Unrealized holding loss on interest rate swaps, tax 0 0 0
Reclassification of realized loss on foreign currency translation to (loss) gain on sale of business, tax 0 0 0
Foreign currency translation adjustment and other, tax $ (3) $ 58 $ 30
v3.24.0.1
CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
CURRENT ASSETS    
Cash and cash equivalents $ 2,234 $ 1,251
Accounts receivable, less allowance of $67 and $85 1,318 1,508
Assets held for sale 104 1,889
Other 1,119 803
Total current assets 4,775 5,451
Property, plant and equipment, net of accumulated depreciation of $21,318 and $19,886 19,758 19,166
GOODWILL AND OTHER ASSETS    
Goodwill 1,964 12,657
Other intangible assets, net 5,470 6,166
Other, net 2,051 2,172
Total goodwill and other assets 9,485 20,995
TOTAL ASSETS 34,018 45,612
CURRENT LIABILITIES    
Current maturities of long-term debt 157 154
Accounts payable 1,134 1,044
Accrued expenses and other liabilities    
Salaries and benefits 696 692
Income and other taxes 251 1,158
Current operating lease liabilities 268 344
Interest 168 181
Other 209 277
Liabilities held for sale 4 451
Current portion of deferred revenue 647 596
Total current liabilities 3,534 4,897
LONG-TERM DEBT 19,831 20,418
DEFERRED CREDITS AND OTHER LIABILITIES    
Deferred income taxes, net 3,127 3,163
Benefit plan obligations, net 2,490 2,391
Deferred revenue 1,969 1,758
Other 2,650 2,611
Total deferred credits and other liabilities 10,236 9,923
COMMITMENTS AND CONTINGENCIES (Note 18)
STOCKHOLDERS' EQUITY    
Preferred stock — non-redeemable, $25.00 par value, authorized 2,000 and 2,000 shares, issued and outstanding 7 and 7 shares 0 0
Common stock, $1.00 par value, authorized 2,200,000 and 2,200,000 shares, issued and outstanding 1,008,486 and 1,001,688 shares 1,008 1,002
Additional paid-in capital 18,126 18,080
Accumulated other comprehensive loss (810) (1,099)
Accumulated deficit (17,907) (7,609)
Total stockholders' equity 417 10,374
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 34,018 $ 45,612
v3.24.0.1
CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
shares in Thousands, $ in Millions
Dec. 31, 2023
Dec. 31, 2022
Statement of Financial Position [Abstract]    
Accounts receivable, allowance $ 67 $ 85
Property, plant and equipment, net of accumulated depreciation $ 21,318 $ 19,886
Preferred stock-non-redeemable, par value (in dollars per share) $ 25.00 $ 25.00
Preferred stock-non-redeemable, authorized shares (in shares) 2,000 2,000
Preferred stock-non-redeemable, issued shares (in shares) 7 7
Preferred stock-non-redeemable, outstanding shares (in shares) 7 7
Common stock, par value (in dollars per share) $ 1.00 $ 1.00
Common stock, authorized shares (in shares) 2,200,000 2,200,000
Common stock, issued shares (in shares) 1,008,486 1,001,688
Common stock, outstanding shares (in shares) 1,008,486 1,001,688
v3.24.0.1
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
OPERATING ACTIVITIES      
Net (loss) income $ (10,298) $ (1,548) $ 2,033
Adjustments to reconcile net (loss) income to net cash provided by operating activities:      
Depreciation and amortization 2,985 3,239 4,019
Net loss (gain) on sale of businesses 121 (113) 0
Loss on disposal groups held for sale 0 40 0
Goodwill impairment 10,693 3,271 0
Deferred income taxes 8 (1,230) 598
Provision for uncollectible accounts 100 133 105
Net gain on early retirement and modification of debt (618) (214) (8)
Unrealized loss (gain) on investments 97 191 (138)
Stock-based compensation 52 98 120
Changes in current assets and liabilities:      
Accounts receivable 102 (158) (8)
Accounts payable (97) 98 (261)
Accrued income and other taxes (1,185) 972 (69)
Other current assets and liabilities, net (549) (372) (353)
Retirement benefits (1) 46 163
Changes in other noncurrent assets and liabilities, net 730 258 283
Other, net 20 24 17
Net cash provided by operating activities 2,160 4,735 6,501
INVESTING ACTIVITIES      
Capital expenditures (3,100) (3,016) (2,900)
Proceeds from sale of businesses 1,746 8,369 0
Proceeds from sale of property, plant and equipment, and other assets 165 120 135
Other, net (12) 3 53
Net cash (used in) provided by investing activities (1,201) 5,476 (2,712)
FINANCING ACTIVITIES      
Net proceeds from issuance of long-term debt 0 0 1,881
Payments of long-term debt (185) (8,093) (3,598)
Net proceeds from (payments on) revolving line of credit 200 (200) 50
Dividends paid (11) (780) (1,087)
Repurchases of common stock 0 (200) (1,000)
Other, net (22) (40) (53)
Net cash used in financing activities (18) (9,313) (3,807)
Net increase (decrease) in cash, cash equivalents and restricted cash 941 898 (18)
Cash, cash equivalents and restricted cash at beginning of period 1,307 409 427
Cash, cash equivalents and restricted cash at end of period 2,248 1,307 409
Supplemental cash flow information:      
Income taxes paid, net (1,303) (76) (112)
Interest paid (net of capitalized interest of $111, $66 and $53) (1,138) (1,365) (1,487)
Supplemental non-cash information regarding investing activities:      
Sale of property, plant and equipment in exchange for note receivable 0 0 56
Supplemental non-cash information regarding financing activities:      
Purchase of software subscription in exchange for installment debt 0 0 77
Cancellation of senior unsecured notes as part of exchange offers (Note 7) (1,554) 0 0
Issuance of senior secured notes as part of exchange offers (Note 7) 924 0 0
Cash, cash equivalents and restricted cash:      
Cash and cash equivalents 2,234 1,251 354
Cash and cash equivalents and restricted cash included in Assets held for sale 0 44 40
Restricted cash included in Other current assets 4 0 2
Restricted cash included in Other, net noncurrent assets 10 12 13
Total $ 2,248 $ 1,307 $ 409
v3.24.0.1
CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Statement of Cash Flows [Abstract]      
Capitalized interest $ 111 $ 66 $ 53
v3.24.0.1
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Millions
Total
COMMON STOCK
ADDITIONAL PAID-IN CAPITAL
ACCUMULATED OTHER COMPREHENSIVE LOSS
ACCUMULATED DEFICIT
Balance at Beginning of Period at Dec. 31, 2020   $ 1,097 $ 20,909 $ (2,813) $ (8,094)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock through dividend reinvestment, incentive and benefit plans   8      
Repurchases of common stock $ (1,000) (81) (919)    
Shares withheld to satisfy tax withholdings     (45)    
Stock-based compensation and other, net     122    
Dividends declared     (1,095)    
Other comprehensive income 655     655  
Net (loss) income 2,033       2,033
Balance at End of Period at Dec. 31, 2021 $ 11,777 1,024 18,972 (2,158) (6,061)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share) $ 1.00        
Issuance of common stock through dividend reinvestment, incentive and benefit plans   11      
Repurchases of common stock $ (200) (33) (167)    
Shares withheld to satisfy tax withholdings     (30)    
Stock-based compensation and other, net     96    
Dividends declared     (791)    
Other comprehensive income 1,059     1,059  
Net (loss) income (1,548)       (1,548)
Balance at End of Period at Dec. 31, 2022 $ 10,374 1,002 18,080 (1,099) (7,609)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share) $ 0.75        
Issuance of common stock through dividend reinvestment, incentive and benefit plans   6      
Repurchases of common stock   0 0    
Shares withheld to satisfy tax withholdings     (5)    
Stock-based compensation and other, net     50    
Dividends declared     1    
Other comprehensive income $ 289     289  
Net (loss) income (10,298)       (10,298)
Balance at End of Period at Dec. 31, 2023 $ 417 $ 1,008 $ 18,126 $ (810) $ (17,907)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share) $ 0        
v3.24.0.1
Background and Summary of Significant Accounting Policies
12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]  
Background and Summary of Significant Accounting Policies Background and Summary of Significant Accounting Policies
General

We are a facilities-based technology and communications company that provides a broad array of integrated products and services to our domestic and global business customers and our domestic mass markets customers. We operate one of the world’s most interconnected networks. Our platform empowers our customers to swiftly adjust digital programs to meet immediate demands, create efficiencies, accelerate market access and reduce costs, which allows our customers to rapidly evolve their IT programs to address dynamic changes. Our specific products and services are detailed in Note 4—Revenue Recognition.

Basis of Presentation

The accompanying consolidated financial statements include our accounts and the accounts of our subsidiaries in which we have a controlling interest. Intercompany amounts and transactions with our consolidated subsidiaries have been eliminated.

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 (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 reclassified certain prior period amounts to conform to the current period presentation, including the recategorization of our Business revenue by product category and sales channel in our segment reporting for 2022 and 2021. See Note 17—Segment Information for additional information. These changes had no impact on total operating revenue, total operating expenses or net (loss) income for any period.

Operating Expenses

Our current definitions of operating expenses are as follows:

Cost of services and products (exclusive of depreciation and amortization) are expenses incurred in providing products and services to our customers. These expenses include: employee-related expenses directly attributable to operating and maintaining our network (such as salaries, wages, benefits and professional fees); facilities expenses (which include third-party telecommunications expenses we incur for using other carriers' networks to provide services to our customers); rents and utilities expenses; equipment sales expenses (such as data integration and modem expenses); and other expenses directly related to our operations; and

Selling, general and administrative expenses are corporate overhead and other operating expenses. These expenses include: employee-related expenses (such as salaries, wages, internal commissions, benefits and professional fees) directly attributable to selling products or services and employee-related expenses for administrative functions; marketing and advertising; property and other operating taxes and fees; external commissions; litigation expenses associated with general matters; bad debt expense; and other selling, general and administrative expenses.

These expense classifications may not be comparable to those of other companies.
Summary of Significant Accounting Policies

Use of Estimates

Our consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles. These accounting principles require us to make certain estimates, judgments and assumptions. We believe that the estimates, judgments and assumptions we make when accounting for specific items and matters are reasonable, based on information available at the time they are made. These estimates, judgments and assumptions can materially affect the reported amounts of assets, liabilities and components of stockholders' equity as of the dates of the consolidated balance sheets, as well as the reported amounts of revenue, expenses and components of cash flows during the periods presented in our other consolidated financial statements. We also make estimates in our assessments of potential losses in relation to threatened or pending tax and legal matters. See Note 16—Income Taxes and Note 18—Commitments, Contingencies and Other Items for additional information.

For matters not related to income taxes, if a loss is considered probable and the amount can be reasonably estimated, we recognize an expense for the estimated loss. If we have the potential to recover a portion of the estimated loss from a third party, we make a separate assessment of recoverability and reduce the estimated loss if recovery is also deemed probable.

For matters related to income taxes, if we determine the impact of an uncertain tax position is more likely than not to be sustained upon audit by the relevant taxing authority, then we recognize a benefit for the largest amount that is more likely than not to be sustained. We do not recognize any portion of an uncertain tax position if the position has less than a 50% likelihood of being sustained. We recognize interest on the amount of unrecognized benefit from uncertain tax positions.

For all of these and other matters, actual results could differ materially from our estimates.

Assets Held for Sale

We classify assets and related liabilities as held for sale when: (i) management has committed to a plan to sell the assets, (ii) the net assets are available for immediate sale, (iii) there is an active program to locate a buyer and (iv) the sale and transfer of the net assets is probable within one year. Assets and liabilities held for sale are presented separately on our consolidated balance sheets with a valuation allowance, if necessary, to recognize the net carrying amount at the lower of cost or fair value, less costs to sell. Depreciation of property, plant and equipment and amortization of finite-lived intangible assets and right-of-use assets are not recorded while these assets are classified as held for sale. For each period that assets are classified as being held for sale, they are tested for recoverability. Unless otherwise specified, the amounts and information presented in the notes do not include assets and liabilities that were classified as held for sale as of December 31, 2023 and December 31, 2022. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses for additional information.
Revenue Recognition

We earn most of our consolidated revenue from contracts with customers, primarily through the provision of communications and other services. Revenue from contracts with customers is accounted for under Accounting Standards Codification ("ASC") 606. We also earn revenue from leasing arrangements (primarily fiber capacity and colocation agreements) and governmental subsidy payments, which are not accounted for under ASC 606.

Revenue is recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to receive in exchange for those goods or services. Revenue is recognized based on the following five-step model:

Identification of the contract with a customer;

Identification of the performance obligations in the contract;

Determination of the transaction price;

Allocation of the transaction price to the performance obligations in the contract; and

Recognition of revenue when, or as, we satisfy a performance obligation.

We provide an array of communications services to business and residential customers, including local voice, VPN, Ethernet, data, broadband, private line (including special access), network access, transport, voice, information technology, video and other ancillary services. We provide these services to a wide range of businesses, including global, enterprise, wholesale, government, and small and medium business customers. Certain contracts also include the sale of equipment, which is not significant to our business.

We recognize revenue for services when we provide the applicable service or when control of a product is transferred. Recognition of certain payments received in advance of services being provided is deferred. These advance payments may include certain activation and certain installation charges. If the activation and installation charges are not separate performance obligations, we recognize them as revenue over the actual or expected contract term using historical experience, which typically ranges from one to five 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.

For access services, we generally bill fixed monthly charges one month in advance to customers and recognize revenue as service is provided over the contract term in alignment with the customer's receipt of service. For usage and other ancillary services, we generally bill in arrears and recognize revenue as usage or delivery occurs. In most cases, the amount invoiced for our service offerings constitutes the price that would be billed on a standalone basis.

In certain cases, customers may be permitted to modify their contracts. We evaluate the change in scope or price to identify whether the modification should be treated as a separate contract, as a termination of the existing contract and creation of a new contract, or as a change to the existing contract.

Customer contracts are evaluated to determine whether the performance obligations are separable. If the performance obligations are deemed separable and separate earnings processes exist, the total transaction price that we expect to receive with the customer is allocated to each performance obligation based on its relative standalone selling price. The revenue associated with each performance obligation is then recognized as earned.

We periodically sell transmission capacity on our network. These transactions are generally 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. In most cases, we account for the cash consideration received on transfers of transmission capacity as ASC 606 revenue which is adjusted for the time value of money and is recognized ratably over the term of the agreement. Cash consideration received on transfers of dark fiber is accounted for as non-ASC 606 lease revenue, which we also recognize ratably over the term of the agreement. We do not recognize revenue on any contemporaneous exchanges of our transmission capacity assets for other non-owned transmission 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 obligations associated with the transaction.

We have service level commitments pursuant to contracts with certain of our customers. To the extent that we determine that such service levels were not achieved or may not have been achieved, we estimate the amount of credits to be issued and record a corresponding reduction to revenue in the period that the service level commitment was not met or may not be met.

Customer payments are made based on billing schedules included in our customer contracts, which is typically on a monthly basis.

We defer (or capitalize) incremental contract acquisition and fulfillment costs and recognize (or amortize) such costs over the average contract life. Our deferred contract costs for our customers have average amortization periods of approximately 36 months for mass markets customers and 33 months for business customers. These deferred costs are periodically monitored to reflect any significant change in assumptions.

See Note 4—Revenue Recognition for additional information.

Advertising Costs

Costs related to advertising are expensed as incurred and recorded as selling, general and administrative expenses in our consolidated statements of operations. Our advertising expense was $87 million, $62 million and $56 million for the years ended December 31, 2023, 2022 and 2021, respectively.

Legal Costs

In the normal course of our business, we incur costs to hire and retain external legal counsel to advise us on finance, regulatory, litigation and other matters. Subject to certain exceptions, we expense these costs as the related services are received.

Income Taxes

We file a consolidated federal income tax return with our eligible subsidiaries. The provision for income taxes reflects taxes currently payable, tax consequences deferred to future periods and adjustments to our liabilities for uncertain tax positions. We record deferred income tax assets and liabilities reflecting future tax consequences attributable to tax NOLs, tax credit carryforwards and differences between the financial statement carrying value of assets and liabilities and the tax basis of those assets and liabilities. Deferred taxes are computed using enacted tax rates expected to apply in the year in which the differences are expected to affect taxable income. The effect on deferred income tax assets and liabilities of a change in tax rate is recognized in earnings in the period that includes the enactment date.

We establish valuation allowances when necessary to reduce deferred income tax assets to the amounts that we believe are more likely than not to be recovered. Each quarter we evaluate the need to retain or adjust each valuation allowance on our deferred tax assets. See Note 16—Income Taxes for additional information.

Cash and Cash Equivalents

Cash and cash equivalents include highly liquid investments that are readily convertible into cash and are not subject to significant risk from fluctuations in interest rates. As a result, the value at which cash and cash equivalents are reported in our consolidated financial statements approximates their fair value. In evaluating investments for classification as cash equivalents, we require that individual securities have original maturities of ninety days or less and that individual investment funds have dollar-weighted average maturities of ninety days or less. To preserve capital and maintain liquidity, we invest with financial institutions we deem to be of sound financial condition and in high quality and relatively risk-free investment products. Our cash investment policy limits the concentration of investments with specific financial institutions or among certain products and includes criteria related to credit worthiness of any particular financial institution.
Book overdrafts occur when we have issued checks but they have not yet been presented to our controlled disbursement bank accounts for payment. Disbursement bank accounts allow us to delay funding of issued checks until the checks are presented for payment. Until the issued checks are presented for payment, the book overdrafts are included in accounts payable on our consolidated balance sheets. This activity is included in the operating activities section in our consolidated statements of cash flows. There were no book overdrafts included in accounts payable at December 31, 2023 or 2022.

Restricted Cash

Restricted cash consists primarily of cash and investments that collateralize our outstanding letters of credit and certain performance and operating obligations. Restricted cash and securities are recorded as current or non-current assets in the consolidated balance sheets depending on the duration of the restriction and the purpose for which the restriction exists. Restricted securities are stated at cost which approximated their fair value as of December 31, 2023 and 2022.

Accounts Receivable and Allowance for Credit Losses

Accounts receivable are recognized based upon the amount due from customers for the services provided or at cost for purchased and other receivables, less an allowance for credit losses. We use a loss rate method to estimate our allowance for credit losses. For more information on our methodology for estimating our allowance for credit losses, see Note 6—Credit Losses on Financial Instruments.

We generally consider our accounts past due if they are outstanding over 30 days. Our past due accounts are written off against our allowance for credit losses when collection is considered to be not probable. Any recoveries of accounts previously written off are generally recognized as a reduction in bad debt expense in the period received. The carrying value of accounts receivable net of the allowance for credit losses approximates fair value. Accounts receivable balances acquired in a business combination are recorded at fair value for all balances receivable at the acquisition date and at the invoiced amount for those amounts invoiced after the acquisition date.

Property, Plant and Equipment

We record property, plant and equipment acquired in connection with our acquisitions based on its estimated fair value as of its acquisition date plus the estimated value of any associated legally or contractually required retirement obligations. We record purchased and constructed property, plant and equipment at cost, plus the estimated value of any associated legally or contractually required retirement obligations. We depreciate the majority of our property, plant and equipment using the straight-line group method over the estimated useful lives of groups of assets, but depreciate certain of our assets using the straight-line method over the estimated useful lives of the specific asset. Under the straight-line group method, assets dedicated to providing telecommunications services (which comprise the majority of our property, plant and equipment) that have similar physical characteristics, use and expected useful lives are pooled for purposes of depreciation and tracking. We use the equal life group procedure to establish each pool's average remaining useful life. Generally, under the straight-line group method, when an asset is sold or retired in the course of normal business activities, the cost is deducted from property, plant and equipment and charged to accumulated depreciation without recognition of a gain or loss. A gain or loss is recognized in our consolidated statements of operations only if a disposal is unusual. Leasehold improvements are amortized over the shorter of the useful lives of the assets or the expected lease term. Expenditures for maintenance and repairs are expensed as incurred. During the construction phase of network and other internal-use capital projects, we capitalize related employee and interest costs. Property, plant and equipment supplies used internally are carried at average cost, except for significant individual items which are carried at actual cost.

We perform annual internal reviews to evaluate the reasonableness of the depreciable lives for our property, plant and equipment. Our reviews utilize models that take into account actual usage, physical wear and tear, replacement history, assumptions about technology evolution and, in certain instances, actuarially determined probabilities to estimate the remaining useful life of our asset base. Our remaining useful life assessments evaluate the possible loss in service value of assets that may precede the physical retirement. Assets shared among many customers may lose service value as those customers reduce their use of the asset. However, the asset is not retired until all customers no longer utilize the asset and we determine there is no alternative use for the asset.
We have asset retirement obligations associated with the legally or contractually required removal of a limited group of property, plant and equipment assets from leased properties and the disposal of certain hazardous materials present in our owned properties. When an asset retirement obligation is identified, usually in association with the acquisition of the asset, we record the fair value of the obligation as a liability. The fair value of the obligation is also capitalized as property, plant and equipment and then amortized over the estimated remaining useful life of the associated asset. Where the removal obligation is not legally binding, we expense the net cost to remove assets in the period in which the costs are actually incurred.

We review long-lived tangible assets for impairment whenever facts and circumstances indicate that the carrying amounts of the assets may not be recoverable. For assessment purposes, long-lived assets are grouped with other assets and liabilities at the lowest identifiable level for which we generate cash flows independently of other groups of assets and liabilities, absent a material change in operations. An impairment loss is recognized only if the carrying amount of the asset group is not recoverable and exceeds its estimated fair value. Recoverability of the asset group to be held and used is assessed by comparing the carrying amount of the asset group to the estimated undiscounted future net cash flows expected to be generated by the asset group. If the asset group's carrying value is not recoverable, we recognize an impairment charge for the amount by which the carrying amount of the asset group exceeds its estimated fair value.

Goodwill, Customer Relationships and Other Intangible Assets

We initially record intangible assets arising from business combinations, such as goodwill, customer relationships, capitalized software, trademarks and trade names, at estimated fair value. We amortize customer relationships primarily over an estimated life of 7 to 14 years, using the straight-line method, depending on the type of customer. Certain customer relationship intangible assets became fully amortized at the end of the first quarter 2021 using the sum-of-years-digits method, which we no longer use for any of our remaining intangible assets. We amortize capitalized software using the straight-line method primarily over estimated lives ranging up to 7 years. We amortize our other intangible assets using the straight-line method over an estimated life of 9 to 20 years. Other intangible assets not arising from business combinations are initially recorded at cost. Where there are no legal, regulatory, contractual or other factors that would reasonably limit the useful life of an intangible asset, we classify them as indefinite-lived intangible assets and such intangible assets are not amortized.

Internally used software, whether purchased or developed by us, is capitalized and amortized using the straight-line method over its estimated useful life. We have capitalized certain costs associated with software such as costs of employees devoted to software development and external direct costs for materials and services. Costs associated with software to be used for internal purposes are expensed until the point at which the project has reached the development stage. Subsequent additions, modifications or upgrades to internal-use software are capitalized only to the extent that they allow the software to perform a task it previously did not perform. Software maintenance, data conversion and training costs are expensed in the period in which they are incurred. We review the remaining economic lives of our capitalized software annually. Capitalized software is included in other intangible assets, net, in our consolidated balance sheets.

Our long-lived intangible assets, other than goodwill, with indefinite lives are assessed for impairment annually, or, under certain circumstances, more frequently, such as when events or changes in circumstances indicate there may be an impairment. These assets are carried at the estimated fair value at the time of acquisition and assets not acquired in acquisitions are recorded at historical cost. However, if their estimated fair value is less than the carrying amount, we recognize an impairment charge for the amount by which the carrying amount of these assets exceeds their estimated fair value.

We are required to assess our goodwill for impairment annually, or more frequently if an event occurs or circumstances change that indicates it is more likely than not the fair values of any of our reporting units were less than their carrying values. We are required to write-down the value of goodwill of our reporting units in periods in which the recorded carrying value of any such unit exceeds its fair value of equity. Our reporting units are not discrete legal entities with discrete full financial statements. Therefore, we assess the equity carrying value and future cash flows each time we perform a goodwill impairment assessment on a reporting unit. To do so, we assign our assets, liabilities and cash flows to reporting units using allocation methodologies which we believe are reasonable and consistent. This process entails various estimates, judgments and assumptions.
We are required to reassign goodwill to reporting units whenever reorganizations of our internal reporting structure changes the composition of our reporting units. Goodwill is reassigned to the reporting units using a relative fair value approach. When the fair value of a reporting unit is available, we allocate goodwill based on the relative fair value of the reporting units. When fair value is not available, we utilize an alternative allocation methodology that we believe represents a reasonable approximation of the fair value of the operations being reorganized.

For more information, see Note 3—Goodwill, Customer Relationships and Other Intangible Assets.

Derivatives and Hedging

From time to time we have used derivative instruments to hedge exposure to interest rate risks arising from fluctuation in interest rates. We account for derivative instruments in accordance with ASC 815, Derivatives and Hedging, which establishes accounting and reporting standards for derivative instruments. We do not use derivative financial instruments for speculative purposes.

Derivatives are recognized in the consolidated balance sheets at their fair values. When we become a party to a derivative instrument and intend to apply hedge accounting, we formally document the hedge relationship and the risk management objective for undertaking the hedge, which includes designating the instrument for financial reporting purposes as a fair value hedge, a cash flow hedge, or a net investment hedge.

As of December 31, 2023, we were not party to any swap agreements. All of our variable-to-fixed interest rate swap agreements in place at the beginning of 2022 expired during the first half of 2022. While we held these agreements, we evaluated the effectiveness as described in Note 15—Derivative Financial Instruments (designated as cash-flow hedges) qualitatively on a quarterly basis. We reflected the change in the fair value of the interest rate swaps in accumulated other comprehensive loss and subsequently reclassified into earnings in the period the hedged transaction affects earnings, by virtue of qualifying as effective cash flow hedges. For more information see Note 15—Derivative Financial Instruments.

Pension and Post-Retirement Benefits

We recognize the funded status of our defined benefit and post-retirement plans as an asset or a liability on our consolidated balance sheets. Each year's actuarial gains or losses are a component of our other comprehensive income (loss), which is then included in our accumulated other comprehensive loss on our consolidated balance sheets. Pension and post-retirement benefit expenses are recognized over the period in which the employee renders service and becomes eligible to receive benefits. We make significant assumptions (including the discount rate, expected rate of return on plan assets, mortality and health care trend rates) in computing the pension and post-retirement benefits expense and obligations. See Note 11—Employee Benefits for additional information.

Foreign Currency

Local currencies of our foreign subsidiaries are the functional currencies for financial reporting purposes except for certain foreign subsidiaries, primarily in Latin America prior to the August 1, 2022 sale of our Latin American business. For operations outside the United States that have functional currencies other than the U.S. dollar, assets and liabilities are translated to U.S. dollars at period-end exchange rates, and revenue, expenses and cash flows are translated using average monthly exchange rates. Prior to the November 1, 2023 sale of our EMEA business and the August 1, 2022 sale of our Latin American business, a significant portion of our non-United States subsidiaries used the British pound, the Euro, or the Brazilian Real, as their functional currency, each of which experienced significant fluctuations against the U.S. dollar during the years ended December 31, 2023, 2022 and 2021. We recognize foreign currency translation gains and losses as a component of accumulated other comprehensive loss in stockholders' equity in our consolidated balance sheet and in our consolidated statements of comprehensive (loss) income in accordance with accounting guidance for foreign currency translation. Prior to the announcement of our divestitures as discussed in Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses, we considered the majority of our investments in our foreign subsidiaries to be long-term in nature. Our foreign currency transaction gains (losses), including where transactions with our non-United States subsidiaries are not considered to be long-term in nature, are included within other (expense) income, net on our consolidated statements of operations.
Common Stock

As of December 31, 2023, we had 11 million shares authorized for future issuance under our equity incentive plans.

Preferred Stock

Holders of outstanding Lumen Technologies preferred stock are entitled to receive cumulative dividends, receive preferential distributions equal to $25 per share plus unpaid dividends upon Lumen's liquidation and vote as a single class with the holders of common stock.

Section 382 Rights Plan

We maintain a Section 382 Rights Plan to protect our U.S. federal net operating loss carryforwards from certain Internal Revenue Code Section 382 limitations. Under the plan, one preferred stock purchase right was distributed for each share of our outstanding common stock as of the close of business on February 25, 2019, and those rights currently trade in tandem with the common stock until they expire or detach under the plan. This plan was designed to deter trading that would result in a change of control (as defined in Code Section 382), and therefore protect our ability to use our historical federal NOLs in the future. The plan is scheduled to lapse in late 2026.
Dividends

The declaration and payment of dividends is at the discretion of our Board of Directors. On November 2, 2022, we announced that our Board had terminated our quarterly cash dividend program.

Correction of Immaterial Errors

During 2023, we identified errors in our previously reported consolidated financial statements related to accounts receivable and accounts payable. The errors are the result of understated revenues from one of our legacy mainframe billing systems and understated network expenses for periods prior to 2021. We have completed a quantitative and qualitative evaluation of the errors individually and in aggregate, and concluded the errors are immaterial to our previously issued consolidated financial statements. Notwithstanding this evaluation, we have revised certain line items on our December 31, 2022 consolidated balance sheet for these errors. The net effect of these adjustments was an increase in accounts receivable and total assets of $31 million and an increase of accounts payable and total liabilities of $94 million on our December 31, 2022 consolidated balance sheet. In addition, we recorded an adjustment to increase our January 1, 2021 accumulated deficit by $63 million, which represents the cumulative correction of the immaterial errors prior to January 1, 2021. The errors did not have an impact on our previously issued consolidated statements of operations, comprehensive (loss) income, or cash flows for the years ended December 31, 2022 or 2021, and did not, and are not expected to, have an impact on the economics of the Company's existing or future commercial arrangements.

Recently Adopted Accounting Pronouncements

Supplier Finance Programs

On January 1, 2023, we adopted Accounting Standards Update ("ASU") 2022-04, “Liabilities-Supplier Finance Program (Subtopic 405-50): Disclosure of Supplier Finance Program Obligations” (“ASU 2022-04”).These amendments require that a company that uses a supplier finance program in connection with the purchase of goods or services disclose sufficient information about the program to allow a user of financial statements to understand the program’s nature, program activity during the period, changes from period to period and the potential magnitude of program transactions. The adoption of ASU 2022-04 did not have a material impact to our consolidated financial statements.

Credit Losses

On January 1, 2023, we adopted ASU 2022-02, “Financial Instruments-Credit Losses (Topic 326): Troubled Debt Restructurings (“TDR”) and Vintage Disclosures” (“ASU 2022-02”). The ASU eliminates the TDR recognition and measurement guidance, enhances existing disclosure requirements and introduces new requirements related to certain modifications of receivables made to borrowers experiencing financial difficulty. The adoption of ASU 2022-02 did not have a material impact to our consolidated financial statements.

Government Assistance

On January 1, 2022, we adopted ASU 2021-10 "Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance” (“ASU 2021-10”) ASU 2021-10. This ASU requires business entities to disclose information about certain types of government assistance they receive. Please refer to Note 4—Revenue Recognition for more information.
Leases

On January 1, 2022, we adopted ASU 2021-05, “Leases (Topic 842): Lessors—Certain Leases with Variable Lease Payments” (“ASU 2021-05”). This ASU (i) amends the lease classification requirements for lessors to align them with practice under ASC Topic 840, (ii) provides criteria for lessors to classify and account for a lease with variable lease payments that do not depend on a reference index or a rate as an operating lease; and (iii) provides guidance with respect to net investments by lessors under operating leases and other related topics. The adoption of ASU 2021-05 did not have a material impact to our consolidated financial statements.

Debt

On January 1, 2021, we adopted ASU 2020-09, "Debt (Topic 470) Amendments to SEC Paragraphs Pursuant to SEC Release No. 33-10762" ("ASU 2020-09"). This ASU amends and supersedes various SEC guidance to reflect SEC Release No. 33-10762, which includes amendments to the financial disclosure requirements applicable to registered debt offerings that include credit enhancements, such as subsidiary guarantees. The adoption of ASU 2020-09 did not have a material impact to our consolidated financial statements.

Investments

On January 1, 2021, we adopted ASU 2020-01, "Investments - Equity Securities (Topic 321), Investments - Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) - Clarifying the Interactions between Topic 321, Topic 323, and Topic 815)" ("ASU 2020-01"). This ASU, among other things, clarifies that a company should consider observable transactions that require a company to either apply or discontinue the equity method of accounting under Topic 323, Investments - Equity Method and Joint Ventures, for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. As of December 31, 2023, we determined there was no application or discontinuation of the equity method during the reporting periods covered in this report. The adoption of ASU 2020-01 did not have an impact to our consolidated financial statements.

Income Taxes

On January 1, 2021, we adopted ASU 2019-12, "Simplifying the Accounting for Income Taxes (Topic 740)" ("ASU 2019-12"). This ASU removes certain exceptions for investments, intra-period allocations and interim calculations, and adds guidance to reduce complexity in accounting for income taxes. The adoption of ASU 2019-12 did not have a material impact to our consolidated financial statements.

Recently Issued Accounting Pronouncements

In December 2023, the Financial Accounting Standards Board (“FASB”) issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”). This ASU requires that public business entities must annually “(1) disclose specific categories in the rate reconciliation and (2) provide additional information for reconciling items that meet a quantitative threshold (if the effect of those reconciling items is equal to or greater than 5 percent of the amount computed by multiplying pretax income or loss by the applicable statutory income tax rate).” ASU 2023-09 will become effective for us in the annual period of fiscal 2025 and early adoption is permitted. We have chosen not to early adopt this ASU.

In December 2023, the FASB issued ASU 2023-08, “Intangibles—Goodwill and Other—Crypto Assets (Subtopic 350-60): Accounting for and Disclosure of Crypto Assets” (“ASU 2023-08”). This ASU is intended to improve the accounting for certain crypto assets by requiring an entity to measure those crypto assets at fair value each reporting period with changes in fair value recognized in net income. The amendments also improve the information provided to investors about an entity’s crypto asset holdings by requiring disclosure about significant holdings, contractual sale restrictions, and changes during the reporting period. This ASU will become effective for us in the first quarter of fiscal 2025 and early adoption is permitted. As of December 31, 2023, we do not hold crypto assets and do not expect ASU 2023-08 will have any impact to our consolidated financial statements.
In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures” (“ASU 2023-07”). This ASU is intended to improve reportable segment disclosure requirements primarily through enhanced disclosures about significant segment expenses. This ASU will become effective for us in annual period fiscal 2024 and early adoption is permitted. As of December 31, 2023, we are evaluating its impact on our consolidated financial statements.

In October 2023, the FASB issued ASU 2023-06, “Disclosure Improvements: Codification Amendments in Response to the SEC’s Disclosure Update and Simplification Initiative” (“ASU 2023-06”). This ASU incorporates certain SEC disclosure requirements into the FASB Accounting Standards Codification (“Codification”). The amendments in the ASU are expected to clarify or improve disclosure and presentation requirements of a variety of Codification Topics, allow users to more easily compare entities subject to the SEC’s existing disclosures with those entities that were not previously subject to the requirements, and align the requirements in the Codification with the SEC’s regulations. ASU 2023-06 will become effective for each amendment on the effective date of the SEC's corresponding disclosure rule changes. As of December 31, 2023, we do not expect ASU 2023-06 will have any impact to our consolidated financial statements.

In August 2023, the FASB issued ASU 2023-05, “Business Combinations – Joint Venture Formations (Subtopic 805-60): Recognition and initial Measurement” (“ASU 2023-05”). This ASU applies to the formation of entities that meet the definition of a joint venture (or a corporate joint venture). The amendments in the ASU require that a joint venture apply a new basis of accounting upon formation. ASU 2023-05 will become effective for us in the first quarter of fiscal 2025 and early adoption is permitted. As of December 31, 2023, we do not expect ASU 2023-05 will have any impact to our consolidated financial statements.

In August 2023, the FASB issued ASU 2023-04, “Liabilities (Topic 405): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 121” (“ASU 2023-04”). This ASU amends and adds various SEC paragraphs to the FASB Codification to reflect guidance regarding the accounting for obligations to safeguard crypto assets an entity holds for platform users. This ASU does not provide any new guidance. ASU 2023-04 became effective for us once the addition to the FASB Codification was made available. As of December 31, 2023, we do not expect ASU 2023-04 will have any impact to our consolidated financial statements.

In July 2023, the FASB issued ASU 2023-03, “Presentation of Financial Statements (Topic 205), Income Statement—Reporting Comprehensive Income (Topic 220), Distinguishing Liabilities from Equity (Topic 480), Equity (Topic 505), and Compensation—Stock Compensation (Topic 718): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 120, SEC Staff Announcement at the March 24, 2022 EITF Meeting, and Staff Accounting Bulletin Topic 6.B, Accounting Series Release 280—General Revision of Regulation S-X: Income or Loss Applicable to Common Stock” (“ASU 2023-03”). This ASU amends or supersedes various SEC paragraphs within the applicable codification to conform to past SEC staff announcements. This ASU does not provide any new guidance. ASU 2023-03 became effective for us once the addition to the FASB Codification was made available. As of December 31, 2023, we do not expect ASU 2023-03 will have any impact to our consolidated financial statements.

In March 2023, the FASB issued ASU 2023-02, “Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method” (“ASU 2023-02”). These amendments allow reporting entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. ASU 2023-02 will become effective for us in the first quarter of fiscal 2024 and early adoption is permitted. As of December 31, 2023, we do not expect ASU 2023-02 will have any impact to our consolidated financial statements.

In March 2023, the FASB issued ASU 2023-01, “Leases (Topic 842): Common Control Arrangements” (“ASU 2023-01”). These amendments require all entities to amortize leasehold improvements associated with common control leases over the useful life to the common control group. ASU 2023-01 will become effective for us in the first quarter of fiscal 2024 and early adoption is permitted. As of December 31, 2023, we do not expect ASU 2023-01 will have any impact to our consolidated financial statements.
In December 2022, the Financial Accounting Standards Board (“FASB”) issued ASU 2022-06, “Reference Rate Reform (Topic 848) – Deferral of the Sunset Date of Topic 848" ("ASU 2022-06"). These amendments extend the period of time preparers can utilize the reference rate reform relief guidance in Topic 848, which defers the sunset date from December 31, 2022, to December 31, 2024, after which entities will no longer be permitted to apply the relief in Topic 848. ASU 2022-06 is effective upon issuance. Based on our review of our key material contracts through December 31, 2023, ASU 2022-06 does not have a material impact to our consolidated financial statements.

In June 2022, the FASB issued ASU 2022-03, “Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions” (“ASU 2022-03”). These amendments clarify that a contractual restriction on the sales of an investment in an equity security is not considered part of the unit of account of the equity security and, therefore, is not considered in measuring its fair value. ASU 2022-03 will become effective for us in the first quarter of fiscal 2024 and early adoption is permitted. As of December 31, 2023, we do not expect ASU 2022-03 will have any impact to our consolidated financial statements.

In January 2021, the FASB issued ASU 2021-01, "Reference Rate Reform (Topic 848): Scope" ("ASU 2021-01"), which clarifies that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. ASU 2021-01 also amends the expedients and exceptions in Topic 848 to capture the incremental consequences of the scope clarification and to tailor the existing guidance to derivative instruments affected by the discounting transition. These amendments may be applied prospectively to contract modifications made and hedging relationships entered into or evaluated on or before December 31, 2022. ASU 2021-01 provides optional expedients for a limited time to ease the potential burden in accounting for reference rate reform. Based on our review of our key material contracts through December 31, 2023, ASU 2021-01 will not have a material impact to our consolidated financial statements.
v3.24.0.1
Divestitures of the Latin American, ILEC and EMEA Businesses
12 Months Ended
Dec. 31, 2023
Discontinued Operations and Disposal Groups [Abstract]  
Divestitures of the Latin American, ILEC and EMEA Businesses Divestitures of the Latin American, ILEC and EMEA Businesses
Latin American Business

On August 1, 2022, affiliates of Level 3 Parent, LLC, an indirect wholly-owned subsidiary of Lumen Technologies, Inc., sold Lumen’s Latin American business pursuant to a definitive agreement dated July 25, 2021, for pre-tax cash proceeds of approximately $2.7 billion.

For the year ended December 31, 2022, we recorded a $597 million net pre-tax gain on disposal associated with the sale of our Latin American business. This gain is reflected as operating income within the consolidated statements of operations.

In connection with the sale, we entered into a transition services agreement under which we provide the purchaser various support services. In addition, Lumen and the purchaser entered into commercial agreements whereby they provide each other various network and other commercial services. In addition, we agreed to indemnify the purchaser for certain matters for which future cash payments by Lumen could be required. Lumen has estimated the fair value of these indemnifications to be $86 million, which is included in other long-term liabilities in our consolidated balance sheet and has reduced our gain on the sale accordingly.

The Latin American business was included in our continuing operations and classified as assets and liabilities held for sale on our consolidated balance sheets through the closing of the transaction on August 1, 2022. As a result of closing the transaction, we derecognized net assets of $1.9 billion, primarily made up of (i) property, plant and equipment, net of accumulated depreciation, of $1.7 billion, (ii) goodwill of $245 million, (iii) other intangible assets, net of accumulated amortization, of $140 million, and (iv) deferred income tax liabilities, net, of $154 million. In addition, we reclassified $112 million of realized loss on foreign currency translation, net of tax, to partially offset the gain on sale of our Latin American business.
ILEC Business

On October 3, 2022, we and certain of our affiliates sold the portion of our incumbent local exchange ("ILEC") business primarily conducted within 20 Midwestern and Southeastern states to affiliates of funds advised by Apollo Global Management, Inc. In exchange, we received $7.5 billion of consideration, which was reduced by approximately $0.4 billion of closing adjustments and partially paid through purchaser's assumption of approximately $1.5 billion of our long-term consolidated indebtedness, resulting in pre-tax cash proceeds of approximately $5.6 billion.

For the year ended December 31, 2022, we recorded a $176 million net pre-tax gain on disposal associated with the sale of our ILEC business. This gain is reflected as operating income within the consolidated statements of operations.

In connection with the sale, we entered into a transition services agreement under which we provide the purchaser various support services. In addition, Lumen and the purchaser entered into commercial agreements whereby they provide each other various network and other commercial services. Under these agreements, we committed to ordering services of approximately $373 million from the purchaser over a period of three years and the purchaser has committed to ordering services of approximately $67 million from us over a period of three years. We indemnified the purchaser for certain matters for which, at the time of closing, future cash payments by Lumen were expected. Lumen had estimated the fair value of these indemnifications to be $89 million, which was included in other current liabilities in our consolidated balance sheet as of December 31, 2022 and increased our income tax expense accordingly as of December 31, 2022. As of the first quarter of 2023, the full $89 million payments had been made.

The ILEC business was included in our continuing operations and classified as assets and liabilities held for sale on our consolidated balance sheets through the closing of the transaction on October 3, 2022. As a result of closing the transaction, we derecognized net assets of $4.8 billion, primarily made up of (i) property, plant and equipment, net of accumulated depreciation, of $3.6 billion, (ii) goodwill of $2.6 billion and (iii) long-term debt, net of discounts, of $1.4 billion. In addition, we reclassified $403 million of net actuarial loss and prior service credit related to the Lumen Pension Plan, net of tax, conveyed to the purchaser to partially offset the gain on the sale of our ILEC business.
EMEA Business

On November 1, 2023, affiliates of Level 3 Parent, LLC, sold Lumen's operations in Europe, the Middle East and Africa (the "EMEA business") to Colt Technology Services Group Limited, a portfolio company of Fidelity Investments, for pre-tax cash proceeds of $1.7 billion after certain closing adjustments and transaction costs. This consideration is further subject to other post-closing adjustments and indemnities set forth in the purchase agreement, as amended and supplemented to date. In connection with the sale, we entered into a transition services agreement under which we provide the purchaser various support services. In addition, Lumen and the purchaser entered into commercial agreements whereby they provide each other various network and other commercial services.

The classification of the EMEA business as held for sale was considered an event or change in circumstance which requires an assessment of the goodwill of the disposal group for impairment each reporting period until disposal. We performed a pre-classification and post-classification goodwill impairment test of the disposal group as described further in Note 3—Goodwill, Customer Relationships and Other Intangible Assets. As a result of our impairment tests, we determined the EMEA business disposal group was impaired, resulting in a non-cash, non-tax-deductible goodwill impairment charge of $43 million in the fourth quarter of 2022. We evaluated the recoverability of the carrying value of the assets and liabilities held for sale relative to the agreed upon sales price, adjusted for costs to sell, and recorded an estimated loss on disposal of $660 million during the year ended December 31, 2022 in the consolidated statement of operations and a valuation allowance included in assets held for sale on the consolidated balance sheet as of December 31, 2022. For the year ended December 31, 2023, we recorded a $102 million net loss on disposal associated with the sale of our EMEA business. This loss is reflected as operating expense within the consolidated statements of operations.

The EMEA business was included in our continuing operations and classified as assets and liabilities held for sale on our consolidated balance sheets through the closing of the transaction on November 1, 2023. As a result of closing the transaction, we derecognized net assets of $2.1 billion, primarily made up of (i) property, plant and equipment, net of accumulated depreciation, of $2.0 billion and (ii) customer relationships and other intangible assets, net of accumulated amortization of $107 million. In addition, we reclassified $382 million of realized loss on foreign currency translation, net of tax, with an offset to the valuation allowance and loss on sale of the EMEA business.

Other Information

We do not believe these divestiture transactions represented a strategic shift for Lumen. Therefore, the divested businesses discussed above did not meet the criteria to be classified as discontinued operations. As a result, we continued to report our operating results for the Latin American, ILEC and EMEA businesses in our consolidated operating results through their respective disposal dates of August 1, 2022, October 3, 2022, and November 1, 2023, respectively.
v3.24.0.1
Goodwill, Customer Relationships and Other Intangible Assets
12 Months Ended
Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill, Customer Relationships and Other Intangible Assets Goodwill, Customer Relationships and Other Intangible Assets
Goodwill, customer relationships and other intangible assets consisted of the following:
As of December 31,
2023
2022(1)
 (Dollars in millions)
Goodwill(2)
$1,964 12,657 
Indefinite-lived intangible assets$
Other intangible assets subject to amortization: 
Customer relationships(3), less accumulated amortization of $4,248 and $3,606
3,811 4,574 
Capitalized software, less accumulated amortization of $4,045(4) and $3,895
1,564 1,482 
Trade names, patents and other, less accumulated amortization of $72(4) and $188
86 101 
Total other intangible assets, net$5,470 6,166 
______________________________________________________________________ 
(1)These values exclude assets classified as held for sale.
(2)We recorded cumulative non-cash, non-tax-deductible goodwill impairment charges of $10.7 billion during the year ended December 31, 2023.
(3)For the year ended December 31, 2023, customer relationships decreased $121 million in conjunction with the sale of select CDN customer contracts in the fourth quarter of 2023 that resulted in a net loss of $73 million included in selling, general and administrative expenses in our consolidated statements of operations.
(4)Certain capitalized software with a gross carrying value of $183 million and trade names with a gross carrying value of $130 million became fully amortized during 2022 and were retired during the first quarter of 2023.

As of December 31, 2023, the gross carrying amount of goodwill, customer relationships, indefinite-lived and other intangible assets was $15.8 billion.

Our goodwill was derived from numerous acquisitions where the purchase price exceeded the fair value of the net assets acquired.

We are required to assess our goodwill and other indefinite-lived intangible assets for impairment annually, or, under certain circumstances, more frequently, such as when events or changes in circumstances indicate there may be impairment. Our annual impairment assessment date for indefinite-lived intangible assets other than goodwill is December 31. We completed our qualitative assessment of our indefinite-lived intangible assets other than goodwill as of December 31, 2023, 2022 and 2021 and concluded it is more likely than not that our indefinite-lived intangible assets are not impaired; thus, no impairment charge for these assets was recorded in 2023, 2022 or 2021. We are required to write down the value of goodwill only when our assessment determines the carrying value of equity of any of our reporting units exceeds its fair value. Our annual impairment assessment date for goodwill is October 31, at which date we assess our reporting units.

We report our results within two segments: Business and Mass Markets. See Note 17—Segment Information for more information on these segments and the underlying sales channels. As of December 31, 2023, we had three reporting units for goodwill impairment testing, which are (i) Mass Markets, (ii) North America Business ("NA Business") and (iii) Asia Pacific ("APAC") region. Prior to the divestiture of the EMEA business, the EMEA region was also a reporting unit and was tested for impairment in the pre-classification test as of October 31, 2022 discussed below. Prior to its August 1, 2022 divestiture, the Latin American ("LATAM") region was also a reporting unit.
Our reporting units are not discrete legal entities with discrete full financial statements. Our assets and liabilities are employed in and relate to the operations of multiple reporting units. For each reporting unit, we compare its estimated fair value of equity to its carrying value of equity that we assign to it. If the estimated fair value of the reporting unit is greater than the carrying value, we conclude that no impairment exists. If the estimated fair value of the reporting unit is less than its carrying value, we record a non-cash impairment charge equal to the excess amount. Depending on the facts and circumstances, we typically estimate the fair value of our reporting units by considering either or both of (i) a discounted cash flow method, which is based on the present value of projected cash flows over a discrete projection period and a terminal value, which is based on the expected normalized cash flows of the reporting units following the discrete projection period, and (ii) a market approach, which includes the use of market multiples of publicly-traded companies whose services and markets are comparable to ours.

2023 Goodwill Impairment Analyses

At October 31, 2023, we performed our annual impairment analysis of the goodwill of our three above-mentioned reporting units. Given the continued erosion in our market capitalization, we determined our quantitative impairment analysis would estimate the fair value of our reporting units using only the market approach. Applying this approach, we utilized company comparisons and analyst reports within the telecommunications industry which supported a range of fair values derived from annualized revenue and Earnings Before Interest, Tax, Depreciation and Amortization ("EBITDA") multiples between 1.5x and 3.5x and 4.8x and 8.4x, respectively. In determining the fair value of each reporting unit, we used revenue and EBITDA multiples below these comparable market multiples. We reconciled the estimated fair values of the reporting units to our market capitalization as of October 31, 2023 and concluded that the indicated control premium of approximately 2% was reasonable based on recent market transactions. Based on our assessments performed with respect to the reporting units as described above, we concluded the estimated fair value of certain of our reporting units was less than their carrying value of equity. As a result, we recorded a non-cash, non-tax-deductible goodwill impairment charge of $1.9 billion on October 31, 2023.

During the second quarter of 2023, we determined circumstances existed indicating it was more likely than not that the carrying value of our reporting units exceed their fair value. Given the continued erosion in our market capitalization, we determined our quantitative impairment analysis would estimate the fair value of our reporting units using only the market approach. Applying this approach, we utilized company comparisons and analyst reports within the telecommunications industry which supported a range of fair values derived from annualized revenue and EBITDA multiples between 1.5x and 4.3x and 4.6x and 10.5x, respectively. In determining the fair value of each reporting unit, we used revenue and EBITDA multiples below these comparable market multiples. The estimated fair values of the reporting units determined in connection with our impairment analysis in the second quarter of 2023 resulted in no control premium, which we determined to be reasonable based on our market capitalization relative to recent transactions. For the three months ended June 30, 2023, based on our assessments performed with respect to the reporting units as described above, we concluded the estimated fair value of certain of our reporting units was less than their carrying value of equity. As a result, we recorded a non-cash, non-tax-deductible goodwill impairment charge of $8.8 billion for the three months ended June 30, 2023.

The market approach that we used in the quarter ended June 30, 2023 and October 31, 2023 tests incorporated estimates and assumptions related to the forecasted results for the remainder of the year, including revenues, expenses, and the achievement of certain strategic initiatives. In developing the market multiples applicable to each reporting unit, we considered observed trends of our industry participants. Our assessment included many factors that required significant judgment. Alternative interpretations of these factors could have resulted in different conclusions regarding the size of our impairments.
2022 Goodwill Impairment Analyses

As of October 31, 2022, we estimated the fair value of our four above-mentioned reporting units by considering both a market approach and a discounted cash flow method. We discounted the projected cash flows for our Mass Markets, NA Business, EMEA and APAC reporting units using a rate that represented their weighted average cost of capital as of the assessment date, which comprised an after-tax cost of debt and a cost of equity, as disclosed in the table below. We utilized company comparisons and analyst reports within the telecommunications industry which at the time of assessment supported a range of fair values derived from annualized revenue and EBITDA multiples between 1.8x and 4.6x and 4.7x and 10.8x, respectively. We selected a revenue and EBITDA multiple for each of our reporting units, resulting in an overall company revenue and EBITDA multiple of 2.5x and 5.5x, respectively. We also reconciled the estimated fair values of the reporting units to our market capitalization as of October 31, 2022 and concluded that the indicated control premium of approximately 59% was reasonable based on recent market transactions, including our divestitures, and our depressed stock price. Due to the depressed trading price of our stock at October 31, 2022, and our assessment performed with respect to the reporting units described above, we concluded that the estimated fair value of our NA Business reporting unit was less than our carrying value of equity for that reporting unit, resulting in a non-cash, non-tax-deductible goodwill impairment charge of approximately $3.2 billion. See the goodwill rollforward by segment table below for the impairment charges by segment. As of October 31, 2022, the estimated fair value of equity exceeded the carrying value of equity for our Mass Markets, EMEA and APAC reporting units by 97%, 171% and 101%, respectively. Based on our assessments performed, we concluded that the goodwill assigned to our Mass Markets, EMEA and APAC reporting units was not impaired at October 31, 2022.

As of October 31, 2022
Reporting Units
Mass MarketsNA BusinessEMEAAPAC
Weighted average cost of capital9.4 %9.4 %9.8 %11.3 %
After-tax cost of debt4.7 %4.7 %5.1 %6.3 %
Cost of equity14.0 %14.0 %14.4 %16.2 %

Our classification of the EMEA Business as being held for sale as described in Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses was considered an event or change in circumstance which required an assessment of our goodwill for impairment as of October 31, 2022. We performed a pre-announcement goodwill impairment test described above to determine whether there was an impairment prior to the classification of these assets as held for sale and to determine the November 2, 2022, fair values to be utilized for goodwill allocation regarding the disposal group to be classified as assets held for sale. We also performed a post-announcement goodwill impairment test using our estimated post-divestiture cash flows and carrying value of equity to evaluate whether the fair value of our NA Business, Mass Markets and APAC reporting units that will remain following the divestiture exceeds the carrying value of the equity of such reporting units after classification of assets held for sale. We concluded no impairment existed regarding our post-divestiture reporting units.

Separate from the annual, pre-announcement and post-announcement goodwill assessments discussed above, we performed an assessment of our EMEA business disposal group for impairment using the purchase price compared to the carrying value of the EMEA business net assets. As a result, the EMEA business disposal group was impaired, resulting in a non-cash, non-tax-deductible goodwill impairment charge of $43 million. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses for additional information regarding the purchase price, carrying value, and impairment for goodwill of the EMEA business. See the goodwill rollforward by segment table below for the impairment charges by segment.

2021 Goodwill Impairment Analyses

At October 31, 2021, we estimated the fair value of our five above-mentioned reporting units by considering both a market approach and a discounted cash flow method. As of October 31, 2021, we determined that the estimated fair value of equity exceeded the carrying value of equity for our Mass Markets, NA Business, EMEA, LATAM and APAC reporting units by 277%, 8%, 57%, 100% and 125%, respectively. Based on our assessments performed, we concluded it was more likely than not that the fair value of each of our reporting units exceeded the carrying value of equity of those reporting units at October 31, 2021. Therefore, we concluded no impairment existed as of our assessment date.
Our third quarter 2021 classification of held for sale assets related to the divestitures of the Latin American and ILEC businesses as described in Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses, was considered an event or change in circumstance which required an assessment of our goodwill for impairment as of July 31, 2021. We performed a pre-classification goodwill impairment test to determine whether there was an impairment prior to the classification of these assets and to determine the July 31, 2021 fair values to be utilized for goodwill allocation regarding the Latin American and ILEC businesses classified as assets held for sale. We concluded it was more likely than not that the fair value of each of our reporting units exceeded the carrying value of equity of those reporting units at July 31, 2021. We also performed a post-classification goodwill impairment test using our estimated post-divestiture cash flows and carrying value of equity to evaluate whether the fair value of our reporting units that would remain following the divestitures exceeded the carrying value of the equity of such reporting units after classification of assets held for sale. At July 31, 2021, we estimated the fair value of our five above-mentioned reporting units as of such date by considering both a market approach and a discounted cash flow method. As of July 31, 2021, we determined that the estimated fair value of equity exceeded the carrying value of equity for our Mass Markets, NA Business, EMEA, LATAM and APAC reporting units by 150%, 24%, 58%,100% and 134%, respectively. Based on our assessments performed, we concluded it was more likely than not that the fair value of each of our reporting units exceeded the carrying value of equity of our reporting units at July 31, 2021. Therefore, we concluded no impairment existed as of our assessment date.

The January 2021 internal reorganization of our reporting structure was considered an event or change in circumstance which required an assessment of our goodwill for impairment. We performed a qualitative impairment assessment in the first quarter of 2021 and concluded it was more likely than not that the fair value of each of our reporting units exceeded the carrying value of equity of those reporting units at January 31, 2021. Therefore, we concluded no impairment existed as of our assessment date.

The following table shows the rollforward of goodwill assigned to our reportable segments from December 31, 2021 through December 31, 2023.

 BusinessMass MarketsTotal
 (Dollars in millions)
As of December 31, 2021$11,235 4,751 15,986 
Effect of foreign currency exchange rate change and other$(58)— (58)
Impairment$(3,271)— (3,271)
As of December 31, 2022(1)
$7,906 4,751 12,657 
Impairment(7,906)(2,787)(10,693)
As of December 31, 2023(1)
$— 1,964 1,964 
______________________________________________________________________
(1)Goodwill at December 31, 2023, December 31, 2022 and December 31, 2021 is net of accumulated impairment losses of $21.7 billion, $11.0 billion and $7.7 billion, respectively.

For additional information on our segments, see Note 17—Segment Information.

As of December 31, 2023, the weighted average remaining useful lives of our finite-lived intangible assets were approximately 6 years in total, approximately 7 years for customer relationships and 4 years for capitalized software.

Total amortization expense for finite-lived intangible assets for the years ended December 31, 2023, 2022 and 2021 was $1.1 billion, $1.1 billion and $1.3 billion, respectively.
We estimate that total amortization expense for finite-lived intangible assets for the years ending December 31, 2024 through 2028 will be as provided in the table below.

 (Dollars in millions)
2024$922 
2025847 
2026803 
2027722 
2028657 
v3.24.0.1
Revenue Recognition
12 Months Ended
Dec. 31, 2023
Revenue from Contract with Customer [Abstract]  
Revenue Recognition Revenue Recognition
Product and Service Categories

We categorize our products and services revenue among the following categories for the Business segment:

Grow, which includes products and services that we anticipate will grow, including our dark fiber, Edge Cloud services, IP, managed security, software-defined wide area networks ("SD WAN"), secure access service edge ("SASE"), Unified Communications and Collaboration ("UC&C") and wavelengths services;

Nurture, which includes our more mature offerings, including ethernet and VPN data networks services;

Harvest, which includes our legacy services managed for cash flow, including Time Division Multiplexing ("TDM") voice, private line and other legacy services; and

Other, which includes equipment sales, IT solutions and other services.

We categorize our products and services revenue among the following categories for the Mass Markets segment:

Fiber Broadband, under which we provide high speed broadband services to residential and small business customers utilizing our fiber-based network infrastructure;

Other Broadband, under which we provide primarily lower speed broadband services to residential and small business customers utilizing our copper-based network infrastructure; and

Voice and Other, under which we derive revenues from (i) providing local and long-distance voice services, professional services, and other ancillary services, and (ii) federal broadband and state support programs.

Reconciliation of Total Revenue to Revenue from Contracts with Customers

The following tables provide total revenue by segment, sales channel and product category. They also provide the amount of revenue that is not subject to ASC 606, "Revenue from Contracts with Customers" ("ASC 606"), but is instead governed by other accounting standards. The amounts in the tables below include revenue for the Latin American, ILEC and EMEA businesses prior to their sales on August 1, 2022, October 3, 2022 and November 1, 2023, respectively:
Year Ended December 31, 2023
Total Revenue
Adjustments for Non-ASC 606 Revenue (1)
Total Revenue from Contracts with Customers
 (Dollars in millions)
Business Segment by Sales Channel and Product Category
Large Enterprise
Grow$2,167 (294)1,873 
Nurture1,450 — 1,450 
Harvest760 — 760 
Other239 (5)234 
Total Large Enterprise Revenue4,616 (299)4,317 
Mid-Market Enterprise
Grow803 (28)775 
Nurture797 — 797 
Harvest378 (4)374 
Other33 (4)29 
Total Mid-Market Enterprise Revenue2,011 (36)1,975 
Public Sector
Grow469 (81)388 
Nurture398 — 398 
Harvest383 (1)382 
Other533 — 533 
Total Public Sector Revenue1,783 (82)1,701 
Wholesale
Grow1,030 (251)779 
Nurture820 (25)795 
Harvest1,264 (165)1,099 
Other11 — 11 
Total Wholesale Revenue3,125 (441)2,684 
Business Segment by Product Category
Grow4,469 (654)3,815 
Nurture3,465 (25)3,440 
Harvest2,785 (170)2,615 
Other816 (9)807 
Total Business Segment Revenue11,535 (858)10,677 
Mass Markets Segment by Product Category
Fiber Broadband636 (16)620 
Other Broadband1,394 (126)1,268 
Voice and Other992 (36)956 
Total Mass Markets Revenue3,022 (178)2,844 
Total Revenue$14,557 (1,036)13,521 
Timing of revenue
Goods and services transferred at a point in time$178 
Services performed over time13,343 
Total revenue from contracts with customers$13,521 
Year Ended December 31, 2022
Total Revenue
Adjustments for Non-ASC 606 Revenue (1)
Total Revenue from Contracts with Customers
 (Dollars in millions)
Business Segment by Sales Channel and Product Category
Large Enterprise
Grow$2,415 (352)2,063 
Nurture1,685 — 1,685 
Harvest1,022 — 1,022 
Other255 (8)247 
Total Large Enterprise Revenue5,377 (360)5,017 
Mid-Market Enterprise
Grow757 (32)725 
Nurture915 — 915 
Harvest510 (7)503 
Other30 (1)29 
Total Mid-Market Enterprise Revenue2,212 (40)2,172 
Public Sector
Grow444 (103)341 
Nurture490 — 490 
Harvest468 (4)464 
Other459 (2)457 
Total Public Sector Revenue1,861 (109)1,752 
Wholesale
Grow979 (271)708 
Nurture1,004 (23)981 
Harvest1,557 (215)1,342 
Other51 — 51 
Total Wholesale Revenue3,591 (509)3,082 
Business Segment by Product Category
Grow4,595 (758)3,837 
Nurture4,094 (23)4,071 
Harvest3,557 (226)3,331 
Other795 (11)784 
Total Business Segment Revenue13,041 (1,018)12,023 
Mass Markets Segment by Product Category
Fiber Broadband604 (18)586 
Other Broadband2,164 (200)1,964 
Voice and Other1,669 (134)1,535 
Total Mass Markets Revenue4,437 (352)4,085 
Total Revenue$17,478 (1,370)16,108 
Timing of revenue
Goods and services transferred at a point in time$154 
Services performed over time15,954 
Total revenue from contracts with customers$16,108 
Year Ended December 31, 2021
Total Revenue
Adjustments for Non-ASC 606 Revenue (1)
Total Revenue from Contracts with Customers
 (Dollars in millions)
Business Segment by Sales Channel and Product Category
Large Enterprise
Grow$2,552 (427)2,125 
Nurture1,906 — 1,906 
Harvest1,205 (2)1,203 
Other255 (5)250 
Total Large Enterprise Revenue5,918 (434)5,484 
Mid-Market Enterprise
Grow724 (29)695 
Nurture1,026 — 1,026 
Harvest613 (7)606 
Other35 (4)31 
Total Mid-Market Enterprise Revenue2,398 (40)2,358 
Public Sector
Grow481 (84)397 
Nurture528 — 528 
Harvest569 (3)566 
Other533 (2)531 
Total Public Sector Revenue2,111 (89)2,022 
Wholesale
Grow930 (279)651 
Nurture1,080 (25)1,055 
Harvest1,682 (228)1,454 
Other— — — 
Total Wholesale Revenue3,692 (532)3,160 
Business Segment by Product Category
Grow4,687 (819)3,868 
Nurture4,540 (25)4,515 
Harvest4,069 (240)3,829 
Other823 (11)812 
Total Business Segment Revenue14,119 (1,095)13,024 
Mass Markets Segment by Product Category
Fiber Broadband524 — 524 
Other Broadband2,507 (227)2,280 
Voice and Other2,537 (570)1,967 
Total Mass Markets Revenue5,568 (797)4,771 
Total Revenue$19,687 (1,892)17,795 
Timing of revenue
Goods and services transferred at a point in time$138 
Services performed over time17,657 
Total revenue from contracts with customers$17,795 
______________________________________________________________________
(1)Includes regulatory revenue and lease revenue not within the scope of ASC 606.
Customer Receivables and Contract Balances

The following table provides balances of customer receivables, contract assets and contract liabilities, net of amounts classified as held for sale, as of December 31, 2023 and 2022:
December 31, 2023December 31, 2022
 (Dollars in millions)
Customer receivables(1)
$1,256 1,424 
Contract assets(2)
29 34 
Contract liabilities(3)
698 656 
______________________________________________________________________
(1)Reflects gross customer receivables of $1.3 billion and $1.5 billion, net of allowance for credit losses of $60 million and $73 million, at December 31, 2023 and December 31, 2022, respectively. At December 31, 2022 amounts exclude customer receivables, net, classified as held for sale of $76 million, related to the EMEA business which was sold November 1, 2023.
(2)At December 31, 2022 these amounts exclude contract assets classified as held for sale of $16 million, related to the EMEA business which was sold November 1, 2023.
(3)At December 31, 2022 these amounts exclude contract liabilities classified as held for sale of $59 million, related to the EMEA business which was sold November 1, 2023.

Contract liabilities are consideration we have received from our customers or billed in advance of providing goods or services promised in the future. We defer recognizing this consideration as revenue until we have satisfied the related performance obligation to the customer. Contract liabilities include recurring services billed one month in advance and installation and maintenance charges that are deferred and recognized over the actual or expected contract term, which typically ranges from 1 to 5 years depending on the service. Contract liabilities are included within deferred revenue in our consolidated balance sheets. During the years ended December 31, 2023 and December 31, 2022, we recognized $434 million and $539 million, respectively, of revenue that was included in contract liabilities of $715 million and $841 million as of January 1, 2023 and 2022, respectively, including contract liabilities that were classified as held for sale.

Performance Obligations

As of December 31, 2023, we expect to recognize approximately $6.8 billion of revenue in the future related to performance obligations associated with existing customer contracts that are partially or wholly unsatisfied. As of December 31, 2023, the transaction price related to unsatisfied performance obligation that are expected to be recognized in 2024, 2025 and thereafter was $2.8 billion, $1.7 billion and $2.3 billion, respectively.

These amounts exclude (i) the value of unsatisfied performance obligations for contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed (for example, uncommitted usage or non-recurring charges associated with professional or technical services to be completed) and (ii) contracts that are classified as leasing arrangements or government assistance that are not subject to ASC 606.
Contract Costs

The following tables provide changes in our contract acquisition costs and fulfillment costs:
Year Ended December 31, 2023
Acquisition CostsFulfillment Costs
 (Dollars in millions)
Beginning of period balance$202 192 
Costs incurred136 157 
Amortization(152)(140)
Change in contract costs held for sale
(4)(25)
End of period balance$182 184 

Year Ended December 31, 2022
Acquisition CostsFulfillment Costs
 (Dollars in millions)
Beginning of period balance$222 186 
Costs incurred172 158 
Amortization(192)(149)
Classified as held for sale(1)
— (3)
End of period balance$202 192 
_____________________________________________________________________
(1)Represents changes in amounts classified as held for sale related to the divestitures of our Latin American and ILEC businesses on August 1, 2022 and October 3, 2022, respectively, as well as changes of $6 million acquisition costs and no fulfillment costs classified as held for sale as of December 31, 2022 related to the divestiture of the EMEA business, held for sale as of December 31, 2022 and completed November 1, 2023. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses.

Acquisition costs include commission fees paid to employees as a result of obtaining contracts. Fulfillment costs include third party and internal costs associated with the provision, installation and activation of services to customers, including labor and materials consumed for these activities.
We amortize deferred acquisition and fulfillment costs based on the transfer of services on a straight-line basis over the average contract life of approximately 36 months for mass markets customers and 33 months for business customers. We include amortized fulfillment costs in cost of services and products and amortized acquisition costs are included in selling, general and administrative expenses in our consolidated statements of operations. We include the amount of these deferred costs that are anticipated to be amortized in the next 12 months in other current assets on our consolidated balance sheets. We include the amount of deferred costs expected to be amortized beyond the next twelve months in other non-current assets on our consolidated balance sheets. We assess deferred acquisition and fulfillment costs for impairment on a quarterly basis.

Governmental Funding

Lumen participates in various U.S. federal and state programs under which government support payments are received to offset costs associated with providing services in targeted locations such as unserved or underserved high-cost or rural areas, or for certain types of customers, including non-profit organizations, educational institutions and local governmental bodies. In certain instances, support payments are conditioned on specified infrastructure buildouts by milestone deadlines or provision of services at specified locations and speed requirements. Commitments may be made annually, on a multi-year basis ranging from one to ten years or be on-going subject to periodic change or termination. Consistent with customary practice and as referenced in ASC 832 Government Assistance, Lumen applies a grant model of accounting by which it accounts for these transactions as non-ASC 606 revenue over the periods in which the costs for which the funding is intended to compensate are incurred. This non-ASC 606 revenue is included in operating revenue in our consolidated statements of operations. Corresponding receivables are recorded when services have been provided to the customers and costs incurred, but the cash has not been received. These amounts are included in our accounts receivable, less allowance in our consolidated balance sheets. Certain programs are subject to audits of compliance with program commitments and, subject to the outcomes of those assessments, Lumen may be required to reimburse the government entity for cash previously received, or, in some cases, pay a penalty. Lumen evaluates each program and establishes a liability under the principles of ASC 450 if it is probable support payments will be recaptured or a penalty will be imposed.

For the years ended December 31, 2023 and 2022, Lumen recorded non-customer revenue of $85 million and $190 million, respectively, under government assistance programs, of which 17% and 31%, respectively, was associated with state universal service fund support programs.

Between 2015 and 2021, we received approximately $500 million annually through the Federal Communications Commission (the "FCC")'s Connect America Fund II ("CAF II"), a federal multi-year recurring subsidy program for more extensive broadband deployment in price-cap ILEC territories. For this program, which ended on December 31, 2021, we were required to meet certain specified infrastructure buildout requirements in 33 states by the end of 2021, which required substantial capital expenditures. In the first quarter of 2022, we recognized $59 million of previously deferred revenue related to the conclusion of the CAF II program based upon our final buildout and filing submissions. The government has the right to audit our compliance with the CAF II program and the ultimate outcome of any remaining examinations is unknown, but could result in a liability to us in excess of our reserve accruals established for these matters.

In early 2020, the FCC created the Rural Digital Opportunity Fund (the “RDOF”) program, a federal support program designed to fund broadband deployment in rural America. For the first phase of this program, RDOF Phase I, the FCC ultimately awarded $6.4 billion support payments to be paid in equal monthly installments over 10 years. We were awarded RDOF funding in several of the states in which we operate and began receiving monthly support payments during the second quarter of 2022. We received approximately $17 million in annual RDOF Phase I support payments for the years ended December 31, 2023 and 2022 and expect to receive this same amount each year thereafter during the program period.

Lumen participates in multiple state sponsored programs for broadband deployment in unserved and underserved areas for which the states have state universal service funds sourced from fees levied on telecommunications providers and passed on to consumers. During the years ending December 31, 2023 and 2022, Lumen participated in these types of programs primarily in the states of Nebraska, North Carolina, New Mexico, Minnesota, Virginia and Wisconsin.
v3.24.0.1
Leases
12 Months Ended
Dec. 31, 2023
Leases [Abstract]  
Leases Leases
We primarily lease to or from third parties various office facilities, colocation facilities, equipment and transmission capacity. Leases with an initial term of 12 months or less are not recorded on our consolidated balance sheets; we recognize lease expense for these leases on a straight-line basis over the lease term.

We determine if an arrangement is a lease at inception and whether that lease meets the classification criteria of a finance or operating lease. Lease-related assets, or right-of-use assets, are recognized at the lease commencement date at amounts equal to the respective lease liabilities. Lease-related liabilities are recognized at the present value of the remaining contractual fixed lease payments, discounted using our incremental borrowing rates. As part of the present value calculation for the lease liabilities, we use an incremental borrowing rate as the rates implicit in the leases are not readily determinable. The incremental borrowing rates used for lease accounting are based on our unsecured rates, adjusted to approximate the rates at which we could borrow on a collateralized basis over a term similar to the recognized lease term. We apply the incremental borrowing rates to lease components using a portfolio approach based upon the length of the lease term and the reporting entity in which the lease resides. Operating lease expense is recognized on a straight-line basis over the lease term, while variable lease payments are expensed as incurred. Operating lease assets are included in other, net under goodwill and other assets on our consolidated balance sheets. Noncurrent operating lease liabilities are included in other under deferred credits and other liabilities on our consolidated balance sheets.

Some of our lease arrangements contain lease components, non-lease components (including common-area maintenance costs) and executory costs (including real estate taxes and insurance costs). We generally account for each component separately based on the estimated standalone price of each component. For colocation leases, we account for the lease and non-lease components as a single lease component.

Many of our lease agreements contain renewal options; however, we do not recognize right-of-use assets or lease liabilities for renewal periods unless we determine that we are reasonably certain of renewing the lease. Certain leases also include options to purchase the leased property. The depreciable life of assets and leasehold improvements are limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain to be exercised. Our lease agreements do not generally contain any material residual value guarantees or material restrictive covenants.

Lease expense consisted of the following:

Years Ended December 31,
202320222021
(Dollars in millions)
Operating and short-term lease cost$459 451 535 
Finance lease cost:
Amortization of right-of-use assets32 37 37 
Interest on lease liability12 15 16 
Total finance lease cost44 52 53 
Total lease cost$503 503 588 

We primarily lease from third parties various equipment, office facilities, retail outlets, switching facilities and other network sites or components. These leases, with few exceptions, provide for renewal options and rent escalations that are either fixed or based on the consumer price index. Any rent abatements, along with rent escalations, are included in the computation of rent expense calculated on a straight-line basis over the lease term. The lease term for most leases includes the initial non-cancelable term plus any term under renewal options that we believe are reasonably assured.
Beginning in the second half of 2020 and continuing into 2023, we rationalized our lease footprint and ceased using 42 underutilized leased property locations. We determined that we no longer needed the leased space and, due to the limited remaining term on the contracts, concluded that we had neither the intent nor ability to sublease the properties. For the years ended December 31, 2023 and 2021, we incurred accelerated lease costs of approximately $8 million and $35 million, respectively. We did not incur material accelerated lease costs during 2022. Additionally, during the second quarter of 2023, we also donated our Monroe, Louisiana campus and leased back a portion thereof. This donation resulted in a $101 million loss recognized for the year ended December 31, 2023. In conjunction with our plans to continue to reduce costs, we expect to continue our real estate rationalization efforts and expect to incur additional accelerated real estate costs in future periods.

For the years ended December 31, 2023, 2022 and 2021, our gross rental expense, including the accelerated lease costs discussed above, was $503 million, $503 million and $588 million, respectively. We also received sublease rental income of $25 million for each of the years ended December 31, 2023, 2022 and 2021.

Supplemental consolidated balance sheet information and other information related to leases is included below:
As of December 31,
Leases (Dollars in millions)Classification on the Balance Sheet20232022
Assets
Operating lease assetsOther, net$1,230 1,340 
Finance lease assetsProperty, plant and equipment, net of accumulated depreciation260 317 
Total leased assets$1,490 1,657 
Liabilities
Current
OperatingCurrent operating lease liabilities$268 344 
FinanceCurrent maturities of long-term debt16 16 
Noncurrent
OperatingOther1,040 1,088 
FinanceLong-term debt215 234 
Total lease liabilities$1,539 1,682 
Weighted-average remaining lease term (years)
Operating leases8.27.7
Finance leases11.312.0
Weighted-average discount rate
Operating leases7.59 %5.98 %
Finance leases4.98 %4.96 %

At December 31, 2022, we classified certain operating and finance lease assets and liabilities related to the EMEA business, which was sold as of November 1, 2023, as held for sale and discontinued recording amortization on the related right-of-use assets upon this classification. These operating and finance lease assets and liabilities held for sale are not reflected in the above or throughout the disclosures within this note. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses for more information.
Supplemental consolidated cash flow statement information related to leases is included below:
Years Ended December 31,
20232022
(Dollars in millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases$461 462 
Operating cash flows for finance leases12 15 
Financing cash flows for finance leases25 89 
Supplemental lease cash flow disclosures:
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities$143 381 
Right-of-use assets obtained in exchange for new finance lease liabilities10 94 

As of December 31, 2023, maturities of lease liabilities were as follows:
 Operating LeasesFinance Leases
 (Dollars in millions)
2024$350 26 
2025257 27 
2026204 28 
2027163 28 
2028130 28 
Thereafter698 166 
Total lease payments1,802 303 
Less: interest(494)(72)
Total1,308 231 
Less: current portion(268)(16)
Long-term portion$1,040 215 

As of December 31, 2023, we had no material operating or finance leases that had not yet commenced.

Operating Lease Income

Lumen Technologies leases various dark fiber, office facilities, colocation facilities, switching facilities, other network sites and service equipment to third parties under operating leases. Lease and sublease income are included in operating revenue in the consolidated statements of operations. See "Revenue Recognition" in Note 1—Background and Summary of Significant Accounting Policies.

For the years ended December 31, 2023, 2022 and 2021, our gross rental income was $1.0 billion, $1.2 billion and $1.2 billion, respectively, which represents 7%, 7% and 6% respectively, of our operating revenue for the years ended December 31, 2023, 2022 and 2021.
Leases Leases
We primarily lease to or from third parties various office facilities, colocation facilities, equipment and transmission capacity. Leases with an initial term of 12 months or less are not recorded on our consolidated balance sheets; we recognize lease expense for these leases on a straight-line basis over the lease term.

We determine if an arrangement is a lease at inception and whether that lease meets the classification criteria of a finance or operating lease. Lease-related assets, or right-of-use assets, are recognized at the lease commencement date at amounts equal to the respective lease liabilities. Lease-related liabilities are recognized at the present value of the remaining contractual fixed lease payments, discounted using our incremental borrowing rates. As part of the present value calculation for the lease liabilities, we use an incremental borrowing rate as the rates implicit in the leases are not readily determinable. The incremental borrowing rates used for lease accounting are based on our unsecured rates, adjusted to approximate the rates at which we could borrow on a collateralized basis over a term similar to the recognized lease term. We apply the incremental borrowing rates to lease components using a portfolio approach based upon the length of the lease term and the reporting entity in which the lease resides. Operating lease expense is recognized on a straight-line basis over the lease term, while variable lease payments are expensed as incurred. Operating lease assets are included in other, net under goodwill and other assets on our consolidated balance sheets. Noncurrent operating lease liabilities are included in other under deferred credits and other liabilities on our consolidated balance sheets.

Some of our lease arrangements contain lease components, non-lease components (including common-area maintenance costs) and executory costs (including real estate taxes and insurance costs). We generally account for each component separately based on the estimated standalone price of each component. For colocation leases, we account for the lease and non-lease components as a single lease component.

Many of our lease agreements contain renewal options; however, we do not recognize right-of-use assets or lease liabilities for renewal periods unless we determine that we are reasonably certain of renewing the lease. Certain leases also include options to purchase the leased property. The depreciable life of assets and leasehold improvements are limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain to be exercised. Our lease agreements do not generally contain any material residual value guarantees or material restrictive covenants.

Lease expense consisted of the following:

Years Ended December 31,
202320222021
(Dollars in millions)
Operating and short-term lease cost$459 451 535 
Finance lease cost:
Amortization of right-of-use assets32 37 37 
Interest on lease liability12 15 16 
Total finance lease cost44 52 53 
Total lease cost$503 503 588 

We primarily lease from third parties various equipment, office facilities, retail outlets, switching facilities and other network sites or components. These leases, with few exceptions, provide for renewal options and rent escalations that are either fixed or based on the consumer price index. Any rent abatements, along with rent escalations, are included in the computation of rent expense calculated on a straight-line basis over the lease term. The lease term for most leases includes the initial non-cancelable term plus any term under renewal options that we believe are reasonably assured.
Beginning in the second half of 2020 and continuing into 2023, we rationalized our lease footprint and ceased using 42 underutilized leased property locations. We determined that we no longer needed the leased space and, due to the limited remaining term on the contracts, concluded that we had neither the intent nor ability to sublease the properties. For the years ended December 31, 2023 and 2021, we incurred accelerated lease costs of approximately $8 million and $35 million, respectively. We did not incur material accelerated lease costs during 2022. Additionally, during the second quarter of 2023, we also donated our Monroe, Louisiana campus and leased back a portion thereof. This donation resulted in a $101 million loss recognized for the year ended December 31, 2023. In conjunction with our plans to continue to reduce costs, we expect to continue our real estate rationalization efforts and expect to incur additional accelerated real estate costs in future periods.

For the years ended December 31, 2023, 2022 and 2021, our gross rental expense, including the accelerated lease costs discussed above, was $503 million, $503 million and $588 million, respectively. We also received sublease rental income of $25 million for each of the years ended December 31, 2023, 2022 and 2021.

Supplemental consolidated balance sheet information and other information related to leases is included below:
As of December 31,
Leases (Dollars in millions)Classification on the Balance Sheet20232022
Assets
Operating lease assetsOther, net$1,230 1,340 
Finance lease assetsProperty, plant and equipment, net of accumulated depreciation260 317 
Total leased assets$1,490 1,657 
Liabilities
Current
OperatingCurrent operating lease liabilities$268 344 
FinanceCurrent maturities of long-term debt16 16 
Noncurrent
OperatingOther1,040 1,088 
FinanceLong-term debt215 234 
Total lease liabilities$1,539 1,682 
Weighted-average remaining lease term (years)
Operating leases8.27.7
Finance leases11.312.0
Weighted-average discount rate
Operating leases7.59 %5.98 %
Finance leases4.98 %4.96 %

At December 31, 2022, we classified certain operating and finance lease assets and liabilities related to the EMEA business, which was sold as of November 1, 2023, as held for sale and discontinued recording amortization on the related right-of-use assets upon this classification. These operating and finance lease assets and liabilities held for sale are not reflected in the above or throughout the disclosures within this note. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses for more information.
Supplemental consolidated cash flow statement information related to leases is included below:
Years Ended December 31,
20232022
(Dollars in millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases$461 462 
Operating cash flows for finance leases12 15 
Financing cash flows for finance leases25 89 
Supplemental lease cash flow disclosures:
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities$143 381 
Right-of-use assets obtained in exchange for new finance lease liabilities10 94 

As of December 31, 2023, maturities of lease liabilities were as follows:
 Operating LeasesFinance Leases
 (Dollars in millions)
2024$350 26 
2025257 27 
2026204 28 
2027163 28 
2028130 28 
Thereafter698 166 
Total lease payments1,802 303 
Less: interest(494)(72)
Total1,308 231 
Less: current portion(268)(16)
Long-term portion$1,040 215 

As of December 31, 2023, we had no material operating or finance leases that had not yet commenced.

Operating Lease Income

Lumen Technologies leases various dark fiber, office facilities, colocation facilities, switching facilities, other network sites and service equipment to third parties under operating leases. Lease and sublease income are included in operating revenue in the consolidated statements of operations. See "Revenue Recognition" in Note 1—Background and Summary of Significant Accounting Policies.

For the years ended December 31, 2023, 2022 and 2021, our gross rental income was $1.0 billion, $1.2 billion and $1.2 billion, respectively, which represents 7%, 7% and 6% respectively, of our operating revenue for the years ended December 31, 2023, 2022 and 2021.
Leases Leases
We primarily lease to or from third parties various office facilities, colocation facilities, equipment and transmission capacity. Leases with an initial term of 12 months or less are not recorded on our consolidated balance sheets; we recognize lease expense for these leases on a straight-line basis over the lease term.

We determine if an arrangement is a lease at inception and whether that lease meets the classification criteria of a finance or operating lease. Lease-related assets, or right-of-use assets, are recognized at the lease commencement date at amounts equal to the respective lease liabilities. Lease-related liabilities are recognized at the present value of the remaining contractual fixed lease payments, discounted using our incremental borrowing rates. As part of the present value calculation for the lease liabilities, we use an incremental borrowing rate as the rates implicit in the leases are not readily determinable. The incremental borrowing rates used for lease accounting are based on our unsecured rates, adjusted to approximate the rates at which we could borrow on a collateralized basis over a term similar to the recognized lease term. We apply the incremental borrowing rates to lease components using a portfolio approach based upon the length of the lease term and the reporting entity in which the lease resides. Operating lease expense is recognized on a straight-line basis over the lease term, while variable lease payments are expensed as incurred. Operating lease assets are included in other, net under goodwill and other assets on our consolidated balance sheets. Noncurrent operating lease liabilities are included in other under deferred credits and other liabilities on our consolidated balance sheets.

Some of our lease arrangements contain lease components, non-lease components (including common-area maintenance costs) and executory costs (including real estate taxes and insurance costs). We generally account for each component separately based on the estimated standalone price of each component. For colocation leases, we account for the lease and non-lease components as a single lease component.

Many of our lease agreements contain renewal options; however, we do not recognize right-of-use assets or lease liabilities for renewal periods unless we determine that we are reasonably certain of renewing the lease. Certain leases also include options to purchase the leased property. The depreciable life of assets and leasehold improvements are limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain to be exercised. Our lease agreements do not generally contain any material residual value guarantees or material restrictive covenants.

Lease expense consisted of the following:

Years Ended December 31,
202320222021
(Dollars in millions)
Operating and short-term lease cost$459 451 535 
Finance lease cost:
Amortization of right-of-use assets32 37 37 
Interest on lease liability12 15 16 
Total finance lease cost44 52 53 
Total lease cost$503 503 588 

We primarily lease from third parties various equipment, office facilities, retail outlets, switching facilities and other network sites or components. These leases, with few exceptions, provide for renewal options and rent escalations that are either fixed or based on the consumer price index. Any rent abatements, along with rent escalations, are included in the computation of rent expense calculated on a straight-line basis over the lease term. The lease term for most leases includes the initial non-cancelable term plus any term under renewal options that we believe are reasonably assured.
Beginning in the second half of 2020 and continuing into 2023, we rationalized our lease footprint and ceased using 42 underutilized leased property locations. We determined that we no longer needed the leased space and, due to the limited remaining term on the contracts, concluded that we had neither the intent nor ability to sublease the properties. For the years ended December 31, 2023 and 2021, we incurred accelerated lease costs of approximately $8 million and $35 million, respectively. We did not incur material accelerated lease costs during 2022. Additionally, during the second quarter of 2023, we also donated our Monroe, Louisiana campus and leased back a portion thereof. This donation resulted in a $101 million loss recognized for the year ended December 31, 2023. In conjunction with our plans to continue to reduce costs, we expect to continue our real estate rationalization efforts and expect to incur additional accelerated real estate costs in future periods.

For the years ended December 31, 2023, 2022 and 2021, our gross rental expense, including the accelerated lease costs discussed above, was $503 million, $503 million and $588 million, respectively. We also received sublease rental income of $25 million for each of the years ended December 31, 2023, 2022 and 2021.

Supplemental consolidated balance sheet information and other information related to leases is included below:
As of December 31,
Leases (Dollars in millions)Classification on the Balance Sheet20232022
Assets
Operating lease assetsOther, net$1,230 1,340 
Finance lease assetsProperty, plant and equipment, net of accumulated depreciation260 317 
Total leased assets$1,490 1,657 
Liabilities
Current
OperatingCurrent operating lease liabilities$268 344 
FinanceCurrent maturities of long-term debt16 16 
Noncurrent
OperatingOther1,040 1,088 
FinanceLong-term debt215 234 
Total lease liabilities$1,539 1,682 
Weighted-average remaining lease term (years)
Operating leases8.27.7
Finance leases11.312.0
Weighted-average discount rate
Operating leases7.59 %5.98 %
Finance leases4.98 %4.96 %

At December 31, 2022, we classified certain operating and finance lease assets and liabilities related to the EMEA business, which was sold as of November 1, 2023, as held for sale and discontinued recording amortization on the related right-of-use assets upon this classification. These operating and finance lease assets and liabilities held for sale are not reflected in the above or throughout the disclosures within this note. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses for more information.
Supplemental consolidated cash flow statement information related to leases is included below:
Years Ended December 31,
20232022
(Dollars in millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases$461 462 
Operating cash flows for finance leases12 15 
Financing cash flows for finance leases25 89 
Supplemental lease cash flow disclosures:
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities$143 381 
Right-of-use assets obtained in exchange for new finance lease liabilities10 94 

As of December 31, 2023, maturities of lease liabilities were as follows:
 Operating LeasesFinance Leases
 (Dollars in millions)
2024$350 26 
2025257 27 
2026204 28 
2027163 28 
2028130 28 
Thereafter698 166 
Total lease payments1,802 303 
Less: interest(494)(72)
Total1,308 231 
Less: current portion(268)(16)
Long-term portion$1,040 215 

As of December 31, 2023, we had no material operating or finance leases that had not yet commenced.

Operating Lease Income

Lumen Technologies leases various dark fiber, office facilities, colocation facilities, switching facilities, other network sites and service equipment to third parties under operating leases. Lease and sublease income are included in operating revenue in the consolidated statements of operations. See "Revenue Recognition" in Note 1—Background and Summary of Significant Accounting Policies.

For the years ended December 31, 2023, 2022 and 2021, our gross rental income was $1.0 billion, $1.2 billion and $1.2 billion, respectively, which represents 7%, 7% and 6% respectively, of our operating revenue for the years ended December 31, 2023, 2022 and 2021.
v3.24.0.1
Credit Losses on Financial Instruments
12 Months Ended
Dec. 31, 2023
Credit Loss [Abstract]  
Credit Losses on Financial Instruments Credit Losses on Financial Instruments
To assess our expected credit losses on financial instruments, we aggregate financial assets with similar risk characteristics to monitor their credit quality or deterioration over the life of such assets. We periodically monitor certain risk characteristics within our aggregated financial assets and revise their composition accordingly, to the extent internal and external risk factors change. We separately evaluate financial assets that do not share risk characteristics with other financial assets. Our financial assets measured at amortized cost primarily consist of accounts receivable.
We use a loss rate method to estimate our allowance for credit losses. Our determination of the current expected credit loss rate begins with our review of historical loss experience as a percentage of accounts receivable. We measure our historical loss period based on the average days to recognize accounts receivable as credit losses. When asset specific characteristics and current conditions change from those in the historical period, due to changes in our credit and collections strategy, certain classes of aged balances, or credit loss and recovery policies, we perform a qualitative and quantitative assessment to adjust our historical loss rate. We use regression analysis to develop an expected loss rate using historical experience and economic data over a forecast period. We measure our forecast period based on the average days to collect payment on billed accounts receivable. To determine our current allowance for credit losses, we combine the historical and expected credit loss rates and apply them to our period end accounts receivable.

If there is an unexpected deterioration of a customer's financial condition or an unexpected change in economic conditions, including macroeconomic events, we assess the need to adjust the allowance for credit losses. Any such resulting adjustments would affect earnings in the period that adjustments are made.

The assessment of the correlation between historical observed default rates, current conditions and forecasted economic conditions requires judgment. Alternative interpretations of these factors could have resulted in different conclusions regarding our allowance for credit losses. The amount of credit loss is sensitive to changes in circumstances and forecasted economic conditions. Our historical credit loss experience, current conditions and forecast of economic conditions may also not be representative of the customers' actual default experience in the future, and we may use methodologies that differ from those used by other companies.

The following table presents the activity of our allowance for credit losses by accounts receivable portfolio for the years ended December 31, 2023 and December 31, 2022:

BusinessMass MarketsTotal
(Dollars in millions)
Beginning balance at January 1, 2021$109 82 191 
Provision for expected losses50 55 105 
Write-offs charged against the allowance(76)(101)(177)
Recoveries collected13 19 
Classified as assets held for sale(1)
(8)(16)(24)
Balance at December 31, 2021$88 26 114 
Provision for expected losses25 108 133 
Write-offs charged against the allowance(61)(114)(175)
Recoveries collected10 16 
Change in allowance in assets held for sale(2)
(5)(3)
Balance at December 31, 2022$57 28 85 
Provision for expected losses35 65 100 
Write-offs charged against the allowance(62)(65)(127)
Recoveries collected
Balance at December 31, 2023
$36 31 67 
______________________________________________________________________
(1)Represents the amounts classified as held for sale related to the divestitures of our Latin American and ILEC businesses on August 1, 2022 and October 3, 2022, respectively. See Note 2—Divestitures of the Latin American and ILEC Businesses and Planned Divestiture of the EMEA Business.
(2)Represents changes in amounts classified as held for sale related to the divestitures of our Latin American and ILEC businesses on August 1, 2022 and October 3, 2022, respectively, and the inclusion of a $5 million allowance for credit losses classified as held for sale as of December 31, 2022 related to the divestiture of the EMEA business. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses.
v3.24.0.1
Long-Term Debt and Credit Facilities
12 Months Ended
Dec. 31, 2023
Debt Disclosure [Abstract]  
Long-Term Debt and Credit Facilities Long-Term Debt and Credit Facilities
The following table reflects the consolidated long-term debt of Lumen Technologies, Inc. and its subsidiaries as of the dates indicated below, including unamortized discounts and premiums and unamortized debt issuance costs:
   As of December 31,
 
Interest Rates(1)
Maturities(1)
20232022
   (Dollars in millions)
Senior Secured Debt: (2)
Lumen Technologies, Inc.    
Revolving Credit Facility(3)
SOFR + 2.00%
2025$200 — 
Term Loan A(4)
SOFR + 2.00%
2025933 991 
Term Loan A-1(4)
SOFR + 2.00%
2025266 283 
Term Loan B(5)
SOFR + 2.25%
20273,891 3,941 
Senior notes
4.000%
20271,250 1,250 
Subsidiaries:
Level 3 Financing, Inc.
Tranche B 2027 Term Loan(6)
SOFR + 1.75%
20272,411 2,411 
Senior notes
3.400% - 10.500%
2027 - 2030
2,425 1,500 
Senior Notes and Other Debt:
Lumen Technologies, Inc.
Senior notes
4.500% - 7.650%
2025 - 2042
2,143 3,722 
Subsidiaries:   
Level 3 Financing, Inc.
Senior notes
3.625% - 4.625%
2027 - 2029
3,940 3,940 
Qwest Corporation
Senior notes
6.500% - 7.750%
2025 - 2057
1,986 1,986 
Term loan(7)
SOFR + 2.50%
2027215 215 
Qwest Capital Funding, Inc.
Senior notes
6.875% - 7.750%
2028 - 2031
192 192 
Finance lease and other obligations(8)
VariousVarious285 317 
Unamortized discounts, net  (4)(7)
Unamortized debt issuance costs(145)(169)
Total long-term debt  19,988 20,572 
Less current maturities  (157)(154)
Long-term debt, excluding current maturities  $19,831 20,418 
_______________________________________________________________________________
(1)As of December 31, 2023.
(2)See the remainder of this Note for a description of certain parent or subsidiary guarantees and liens securing this debt.
(3)Revolving Credit Facility had an interest rate of 7.464% as of December 31, 2023.
(4)Term Loans A and A-1 had interest rates of 7.470% and 6.384% as of December 31, 2023 and December 31, 2022, respectively.
(5)Term Loan B had interest rates of 7.720% and 6.634% as of December 31, 2023 and December 31, 2022, respectively.
(6)The Level 3 Tranche B 2027 Term Loan had interest rates of 7.220% and 6.134% as of December 31, 2023 and December 31, 2022, respectively.
(7)The Qwest Corporation Term Loan had interest rates of 7.970% and 6.640% as of December 31, 2023 and December 31, 2022, respectively.
(8)December 31, 2022 excludes finance lease obligations of our EMEA business that were classified as held for sale as of December 31, 2022 and sold on November 1, 2023. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses.

Long-Term Debt Maturities

Set forth below is the aggregate principal amount of our long-term debt as of December 31, 2023 (excluding unamortized discounts, net, and unamortized debt issuance costs) maturing during the following years.

 (Dollars in millions)
2024$157 
20251,864 
2026498 
20279,386 
20281,539 
2029 and thereafter6,693 
Total long-term debt$20,137 

Debt of Lumen Technologies, Inc. and its Subsidiaries

At December 31, 2023, most of our outstanding consolidated debt had been incurred by Lumen Technologies, Inc. or one of the following three other primary borrowers or “borrowing groups,” each of which has borrowed funds either on a standalone basis or as part of a separate restricted group with certain of its subsidiaries:

Level 3 Financing, Inc., including its parent guarantor Level 3 Parent, LLC, and one or more subsidiary guarantors;

Qwest Corporation; and

Qwest Capital Funding, Inc., including its parent guarantor, Qwest Communications International Inc.

Each of these borrowers or borrowing groups has entered into one or more credit agreements with certain financial institutions or other institutional lenders, or issued senior notes. Certain of these debt instruments are described further below.

Amended and Restated Credit Agreement

On January 31, 2020, we amended and restated our credit agreement dated June 19, 2017 (as so amended and restated, the "Amended Credit Agreement"). At December 31, 2023, the Amended Credit Agreement consisted of the following facilities:

a $2.2 billion senior secured revolving credit facility (“the Revolving Credit Facility”), against which $200 million of borrowings and $218 million of undrawn letters of credit were issued under this facility as of December 31, 2023, discussed further below;

a $933 million senior secured Term Loan A credit facility;

a $266 million senior secured Term Loan A-1 credit facility with CoBank, ACB; and

a $3.9 billion senior secured Term Loan B credit facility (the term loan facilities and the Revolving Credit Facility being referred to collectively as the "Amended Secured Credit Facilities").
Loans under the Term Loan A and A-1 facilities and the Revolving Credit Facility bear interest at a rate equal to, at our option, the Secured Overnight Financing Rate ("SOFR") or the alternative base rate (each as defined in the Amended Credit Agreement) plus an applicable margin between 1.50% to 2.25% per annum for SOFR loans and 0.50% to 1.25% per annum for alternative base rate loans, depending on our then current total leverage ratio. Loans under the Term Loan B facility bear interest at SOFR plus 2.25% per annum or the alternative base rate plus 1.25% per annum. Loans under each of the term loan facilities require certain specified quarterly amortization payments and certain specified mandatory prepayments in connection with certain asset sales and debt issuances and out of excess cash flow, among other things, subject in each case to certain significant exceptions.

Borrowings under the Revolving Credit Facility and the Term Loan A and A-1 facilities mature on January 31, 2025. Borrowings under the Term Loan B facility mature on March 15, 2027.

All of Lumen's obligations under the Amended Secured Credit Facilities are guaranteed by certain of its subsidiaries. The guarantees by certain of those guarantors are secured by a first priority security interest in substantially all assets (including certain subsidiaries stock) directly owned by them, subject to certain exceptions and limitations.

A portion of the revolving credit facility in an amount not to exceed $250 million is available for swingline loans, and a portion in an amount not to exceed $800 million is available for the issuance of letters of credit. During the year ended December 31, 2023, we issued approximately $218 million of letters of credit under our revolving credit facility, which reduced our borrowing capacity available thereunder by the same amount. As of December 31, 2023, these issued letters of credit were undrawn.

Lumen Technologies is permitted under the Amended Credit Agreement to request certain incremental borrowings subject to the satisfaction of various conditions and to certain other limitations. Any incremental borrowings would be subject to the same terms and conditions under the Amended Credit Agreement.

Term Loans and Certain Other Debt of Subsidiaries

Qwest Corporation

On October 23, 2020, Qwest Corporation borrowed $215 million under a variable-rate term loan with CoBank ACB. The outstanding unpaid principal amount of this term loan plus any accrued and unpaid interest is due on October 23, 2027. Interest is paid at least quarterly based upon either SOFR or the base rate (as defined in the credit agreement) plus an applicable margin between 1.50% to 2.50% per annum for SOFR loans and 0.50% to 1.50% per annum for base rate loans depending on Qwest Corporation's then current senior unsecured long-term debt rating.

Level 3 Financing, Inc.

At December 31, 2023, Level 3 Financing, Inc. owed $2.4 billion under a senior secured Tranche B 2027 Term Loan, which matures on March 1, 2027. The Tranche B 2027 Term Loan carries an interest rate, in the case of base rate borrowings, equal to (i) the greater of the Prime Rate, the Federal Funds Effective Rate plus 50 basis points, or SOFR plus 100 basis points (with all such terms and calculations as defined or further specified in the credit agreement) plus (ii) 0.75% per annum. Any Eurodollar borrowings under the Tranche B 2027 Term Loan bear interest at SOFR plus 1.75% per annum.

The Tranche B 2027 Term Loan requires certain specified mandatory prepayments in connection with certain asset sales and other transactions, subject to certain significant exceptions. The obligations of Level 3 Financing, Inc. under the Tranche B 2027 Term Loan are, subject to certain exceptions, secured by certain assets of Level 3 Parent, LLC and certain of its material domestic telecommunication subsidiaries. Also, Level 3 Parent, LLC and certain of its subsidiaries have guaranteed the obligations of Level 3 Financing, Inc. under the Tranche B 2027 Term Loan.
Revolving Letters of Credit

We use various financial instruments in the normal course of business. These instruments include letters of credit, which are conditional commitments issued on our behalf in accordance with specified terms and conditions. Lumen Technologies maintains an uncommitted $225 million revolving letter of credit facility separate from the letter of credit facility included in the revolving credit facility noted above. Letters of credit issued under this uncommitted facility are backed by credit enhancements in the form of secured guarantees issued by certain of our subsidiaries. As of December 31, 2023 and 2022, we had (i) $40 million and $94 million, respectively, of letters of credit outstanding under our committed facility and various other facilities and (ii) $218 million and no letters of credit outstanding, respectively, under our revolving credit facility. As of December 31, 2023, these issued letters of credit were undrawn.

Senior Notes

Lumen's consolidated indebtedness at December 31, 2023 included (i) senior secured notes issued by Lumen Technologies, Inc. and Level 3 Financing, Inc. and (ii) senior unsecured notes issued by Lumen Technologies, Inc., Level 3 Financing, Inc., Qwest Corporation, and Qwest Capital Funding, Inc. All of these notes carry fixed interest rates and all principal is due on the notes’ respective maturity dates, which rates and maturity dates are summarized in the table above. The Lumen Technologies, Inc. secured senior notes are guaranteed by the same domestic subsidiaries that guarantee the Amended Credit Agreement on substantially the same terms and conditions that govern the guarantees of the Amended Credit Agreement. The Level 3 Financing, Inc. secured senior notes are secured by a pledge of substantially all of its assets and guaranteed on a secured basis by the same domestic subsidiaries that guarantee its Term B 2027 Term Loan. The remaining senior notes issued by Level 3 Financing, Inc. are guaranteed on an unsecured basis by its parent, Level 3 Parent, LLC, and one of its subsidiaries. The senior notes issued by Qwest Capital Funding, Inc. are guaranteed by its parent, Qwest Communications International Inc. Except for a limited number of senior notes issued by Qwest Corporation, the issuer generally can redeem the notes, at its option, in whole or in part, (i) pursuant to a fixed schedule of pre-established redemption prices, (ii) pursuant to a “make whole” redemption price or (iii) under certain other specified limited conditions. Under certain circumstances in connection with a “change of control” of Lumen Technologies, it will be required to make an offer to repurchase each series of these senior notes (other than two of its older series of notes) at a price of 101% of the principal amount redeemed, plus accrued and unpaid interest. Also, under certain circumstances in connection with a "change of control" of Level 3 Parent, LLC or Level 3 Financing, Inc., Level 3 Financing will be required to make an offer to repurchase each series of its outstanding senior notes at a price of 101% of the principal amount redeemed, plus accrued and unpaid interest.

2023 Borrowings and Repayments

During 2023, Lumen borrowed $925 million from, and made repayments of $725 million to, its revolving credit facility.

2023 Exchange Offers and Repurchases

Pursuant to exchange offers that commenced on March 16, 2023 (the “Exchange Offers”), on March 31, 2023, Level 3 Financing, Inc. issued $915 million of its 10.500% Senior Secured Notes due 2030 (the “10.500% Notes”) in exchange for $1.535 billion of Lumen’s outstanding senior unsecured notes. On April 17, 2023, in connection with the Exchange Offers, Level 3 Financing, Inc. issued an additional $9 million of its 10.500% Notes in exchange for $19 million of Lumen's outstanding senior unsecured notes. All exchanged notes were concurrently cancelled. These transactions resulted in a $630 million net reduction in the aggregate principal amount of Lumen’s consolidated indebtedness. In addition to the above described exchange offers, we repurchased $24 million aggregate principal amount of Lumen's outstanding senior unsecured notes during the first quarter of 2023. These above-described transactions resulted in an aggregate net gain of $618 million for the year ended December 31, 2023.
The following table sets forth the aggregate principal amount of each series of Lumen’s senior unsecured notes retired during the year ended December 31, 2023, in connection with the above-described exchange transactions:

DebtPeriod of Reduction
Aggregate principal (amounts in millions)
5.625% Senior Notes, Series X, due 2025
Q1 2023$48 
7.200% Senior Notes, Series D, due 2025
Q1 202321 
5.125% Senior Notes due 2026
Q1 2023291 
6.875% Debentures, Series G, due 2028
Q1 202352 
5.375% Senior Notes due 2029
Q1 2023275 
4.500% Senior Notes due 2029
Q1 2023556 
7.600% Senior Notes, Series P, due 2039
Q1 2023161 
7.650% Senior Notes, Series U, due 2042
Q1 2023131 
5.625% Senior Notes, Series X, due 2025
Q2 2023
4.500% Senior Notes due 2029
Q2 2023
7.600% Senior Notes, Series P, due 2039
Q2 2023
7.650% Senior Notes, Series U, due 2042
Q2 202313 
Total$1,554 
2022 Borrowings and Repayments

During 2022, Lumen borrowed $2.4 billion from, and made repayments of $2.6 billion to, its revolving credit facility. We used our net revolving credit draws and available cash to repay the following aggregate principal amounts of indebtedness through a combination of tender offers, redemptions, prepayments, amortization payments and payments at maturity. These transactions resulted in a net gain on the extinguishment of debt of $214 million.

DebtPeriod of Repayment(Dollars in millions)
Lumen Technologies, Inc.
5.800% Senior Notes due 2022 (at maturity)
Q1 2022$1,400 
6.750% Senior Notes, Series W, due 2023
Q4 2022750 
7.500% Senior Notes, Series Y, due 2024
Q4 2022982 
7.500% Senior Notes, Series Y, due 2024
Q3 202218 
5.625% Senior Notes, Series X, due 2025
Q4 2022286 
7.200% Senior Notes, Series D, due 2025
Q4 202234 
5.125% Senior Notes due 2026
Q4 2022520 
5.125% Senior Notes due 2026
Q3 202211 
6.875% Debentures, Series G, due 2028
Q4 2022130 
5.375% Senior Notes due 2029
Q4 2022494 
Term Loan B prepaymentQ4 2022909 
Scheduled term loan paymentsMultiple125 
Level 3 Financing, Inc.
Tranche B 2027 Term LoanQ3 2022700 
5.375% Senior Notes due 2025
Q3 2022800 
5.250% Senior Notes due 2026
Q3 2022775 
Embarq Corporation Subsidiaries
First Mortgage BondsQ4 2022137 
Qwest Capital Funding, Inc.
Senior NotesQ4 202263 
OtherQ4 202268 
Total debt repayments
$8,202 

Interest Expense

Interest expense includes interest on total long-term debt. The following table presents the amount of gross interest expense, net of capitalized interest:

 Years Ended December 31,
 202320222021
 (Dollars in millions)
Interest expense:   
Gross interest expense$1,269 1,398 1,575 
Capitalized interest(111)(66)(53)
Total interest expense$1,158 1,332 1,522 
Covenants

Lumen Technologies, Inc.

With respect to the Term Loan A and A-1 facilities and the Revolving Credit Facility, the Amended Credit Agreement requires us to maintain (i) a maximum total leverage ratio of not more than 4.75 to 1.00 and (ii) a minimum consolidated interest coverage ratio of at least 2.00 to 1.00, with such ratios being determined and calculated in the manner described in the Amended Credit Agreement.

The Amended Secured Credit Facilities contain various representations and warranties and extensive affirmative and negative covenants. Such covenants include, among other things and subject to certain significant exceptions, restrictions on our ability to declare or pay dividends, repurchase stock, repay certain other indebtedness, create liens, incur additional indebtedness, make investments, engage in transactions with our affiliates, dispose of assets and merge or consolidate with any other person.

The senior unsecured notes of Lumen Technologies, Inc. were issued under four separate indentures. These indentures restrict our ability to (i) incur, issue or create liens upon the property of Lumen Technologies, Inc. and (ii) consolidate with or merge into, or transfer or lease all or substantially all of our assets to any other party. These indentures do not contain any provisions that restrict the incurrence of additional indebtedness. The senior secured notes of Lumen Technologies, Inc. were issued under a separate indenture that contains a more restrictive set of covenants. As indicated above under "Senior Notes", Lumen Technologies, Inc. will be required to offer to purchase certain of its long-term debt securities issued under its indentures under certain circumstances in connection with a "change of control" of Lumen Technologies, Inc.

Level 3 Companies

The term loan, senior secured notes and senior unsecured notes of Level 3 Financing, Inc. contain various representations and extensive affirmative and negative covenants. Such covenants include, among other things and subject to certain significant exceptions, restrictions on their ability to declare or pay dividends, repay certain other indebtedness, create liens, incur additional indebtedness, make investments, dispose of assets and merge or consolidate with any other person. Also, as indicated above under "Senior Notes", Level 3 Financing, Inc. will be required to offer to repurchase or repay certain of its long-term debt under certain circumstances in connection with a "change of control" of Level 3 Financing or Level 3 Parent, LLC.

Qwest Companies

Under its term loan, Qwest Corporation must maintain a debt to EBITDA ratio of not more than 2.85 to 1.00, as determined and calculated in the manner described in the applicable term loan documentation. The term loan also contains a negative pledge covenant, which generally requires Qwest Corporation to secure equally and ratably any advances under the term loan if it pledges assets or permits liens on its property for the benefit of other debtholders.

The senior notes of Qwest Corporation were issued under indentures dated April 15, 1990 and October 15, 1999. These indentures contain restrictions on the incurrence of liens and the consummation of certain transactions substantially similar to the above-described covenants in Lumen's indentures (but contain no mandatory repurchase provisions). The senior notes of Qwest Capital Funding, Inc. were issued under an indenture dated June 29, 1998 containing terms substantially similar to those set forth in Qwest Corporation's indentures.
Impact of Covenants

The debt covenants applicable to Lumen Technologies, Inc. and its subsidiaries could have a material adverse impact on their ability to operate or expand their respective businesses, to pursue strategic transactions, or to otherwise pursue their plans and strategies. The covenants of the Level 3 companies may significantly restrict the ability of Lumen Technologies, Inc. to receive cash from the Level 3 companies, to distribute cash from the Level 3 companies to other of Lumen’s affiliated entities, or to enter into other transactions among Lumen’s wholly-owned entities.

Certain of the debt instruments of Lumen Technologies, Inc. and its subsidiaries contain cross payment 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.

The ability of Lumen Technologies, Inc. and its subsidiaries to comply with the financial covenants in their respective debt instruments could be adversely impacted by a wide variety of events, including unforeseen contingencies, many of which are beyond their control.

Compliance

As of December 31, 2023, Lumen Technologies, Inc. believes it and its subsidiaries were in compliance with the provisions and financial covenants in their respective material debt agreements in all material respects.

Guarantees

Lumen Technologies does not guarantee the debt of any unaffiliated parties, but, as noted above, as of December 31, 2023 certain of its largest subsidiaries guaranteed (i) its debt outstanding under its Amended Secured Credit Facilities, its senior secured notes and its $225 million letter of credit facility and (ii) the outstanding term loans or senior notes issued by certain other subsidiaries. As further noted above, several of the subsidiaries guaranteeing these obligations have pledged substantially all of their assets to secure certain of their respective guarantees.

Subsequent Event

See Note 24—Subsequent Events, for information regarding certain debt restructuring transactions contemplated under our amended and restated transaction support agreement dated as of January 22, 2024.
v3.24.0.1
Accounts Receivable
12 Months Ended
Dec. 31, 2023
Receivables [Abstract]  
Accounts Receivable Accounts Receivable
The following table presents details of our accounts receivable balances:
 As of December 31,
 2023
2022(1)
 (Dollars in millions)
Trade and purchased receivables$1,181 1,319 
Earned and unbilled receivables165 209 
Other39 65 
Total accounts receivable1,385 1,593 
Less: allowance for credit losses(67)(85)
Accounts receivable, less allowance$1,318 1,508 
______________________________________________________________________
(1)Amounts have been adjusted to reflect the immaterial correction of accounts receivable. See Note 1—Background and Summary of Significant Accounting Policies under the header Correction of Immaterial Errors.

We are exposed to concentrations of credit risk from our customers. We generally do not require collateral to secure our receivable balances. We have agreements with other communications service providers whereby we agree to bill and collect on their behalf for services rendered by those providers to our customers within our local service area. We purchase accounts receivable from other communications service providers primarily on a recourse basis and include these amounts in our accounts receivable balance. We have not experienced any significant loss associated with these purchased receivables.
v3.24.0.1
Property, Plant and Equipment
12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Property, Plant and Equipment
Net property, plant and equipment is composed of the following:
 Depreciable
Lives
As of December 31,
 
2023
2022(5)
  (Dollars in millions)
LandN/A$646 651 
Fiber, conduit and other outside plant (1)
15-45 years
15,217 14,451 
Central office and other network electronics(2)
3-10 years
15,741 15,077 
Support assets(3)
3-30 years
6,714 6,863 
Construction in progress(4)
N/A2,758 2,010 
Gross property, plant and equipment 41,076 39,052 
Accumulated depreciation (21,318)(19,886)
Net property, plant and equipment $19,758 19,166 
_______________________________________________________________________________
(1)Fiber, conduit and other outside plant consists of fiber and metallic cable, conduit, poles and other supporting structures.
(2)Central office and other network electronics consists of circuit and packet switches, routers, transmission electronics and electronics providing service to customers.
(3)Support assets consist of buildings, data centers, computers and other administrative and support equipment.
(4)Construction in progress includes inventory held for construction and property of the aforementioned categories that has not been placed in service as it is still under construction.
(5)At December 31, 2022, we had $1.9 billion of certain property, plant and equipment, net related to our EMEA business which was classified as held for sale at this date and which was sold on November 1, 2023. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses for more information.

We recorded depreciation expense of $1.9 billion, $2.1 billion and $2.7 billion for the years ended December 31, 2023, 2022 and 2021, respectively.

Asset Retirement Obligations

As of December 31, 2023 and 2022, our asset retirement obligations balance was primarily related to estimated future costs of removing equipment from leased properties and estimated future costs of properly disposing of asbestos and other hazardous materials upon remodeling or demolishing buildings. Asset retirement obligations are included in other long-term liabilities on our consolidated balance sheets.

Our fair value estimates were determined using the discounted cash flow method.
The following table provides asset retirement obligation activity:
 Years Ended December 31,
 20232022
 (Dollars in millions)
Balance at beginning of year$156 182 
Accretion expense10 
Liabilities settled(9)(10)
Change in estimate
Classified as held for sale(1)
— (30)
Balance at end of year$157 156 
_______________________________________________________________________________
(1)Represents the amounts classified as held for sale related to our EMEA business. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses.

The changes in estimate referred to in the table above were offset against gross property, plant and equipment.
v3.24.0.1
Severance
12 Months Ended
Dec. 31, 2023
Restructuring and Related Activities [Abstract]  
Severance Severance
Periodically, we reduce our workforce and accrue liabilities for the related severance costs. These workforce reductions result primarily from the progression or completion of our post-acquisition integration plans, increased competitive pressures, cost reduction initiatives, process improvements through automation and reduced workloads due to reduced demand for certain services.

During the fourth quarter of 2023 we reduced our global workforce by approximately 4% as part of our ongoing efforts to reorganize Lumen for growth by right-sizing our operations to improve our profitability. As a result of this plan, we incurred severance and related costs of approximately $53 million. We do not expect to incur any material impairment or exit costs related to this plan.

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 17—Segment Information, we do not allocate these severance expenses to our segments.

Changes in our accrued liabilities for severance expenses were as follows:
Severance
 (Dollars in millions)
Balance at December 31, 2021$36 
Accrued to expense12 
Payments, net(37)
Balance at December 31, 202211 
Accrued to expense74 
Payments, net(67)
Balance at December 31, 2023$18 
v3.24.0.1
Employee Benefits
12 Months Ended
Dec. 31, 2023
Retirement Benefits [Abstract]  
Employee Benefits Employee Benefits
Pension, Post-Retirement and Other Post-Employment Benefits

We sponsor various defined benefit pension plans (qualified and non-qualified) which, in the aggregate, cover a substantial portion of our employees. Pension benefits for participants of the Lumen Combined Pension Plan ("Combined Pension Plan") and, through the October 3, 2022 sale of the ILEC business, the Lumen Pension Plan, who are represented by a collective bargaining agreement are based on negotiated schedules. All other participants' pension benefits are based on each individual participant's years of service and compensation. We also maintain non-qualified pension plans for certain current and former highly compensated employees. We maintain post-retirement benefit plans that provide health care and life insurance benefits for certain eligible retirees. We also provide other post-employment benefits for certain eligible former employees. We use a December 31 measurement date for all our plans.

On October 19, 2021, we, as sponsor of the Combined Pension Plan, along with the Plan’s independent fiduciary, entered into an agreement committing the Plan to use a portion of its plan assets to purchase an annuity from an insurance company (the "Insurer") to transfer approximately $1.4 billion of the Plan’s pension liabilities. This agreement irrevocably transferred to the Insurer future Plan benefit obligations for approximately 22,600 U.S. Lumen participants (“Transferred Participants”) effective on December 31, 2021. This annuity transaction was funded entirely by existing Plan assets. The Insurer assumed responsibility for administrative and customer service support, including distribution of payments to the Transferred Participants. Transferred Participants’ benefits were not reduced as a result of this transaction.

As of January 1, 2022, we spun off the Lumen Pension Plan from the Lumen Combined Pension Plan in anticipation of the sale of the ILEC business, as described further in Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses. At the time of the spin-off, the Lumen Pension Plan covered approximately 2,500 active plan participants along with 19,000 other participants. At the time of the spin-off, the Lumen Pension Plan had a pension benefit obligation of $2.5 billion and assets of $2.2 billion. In addition, the December 31, 2021 actuarial (loss) gain and prior service cost included in accumulated other comprehensive loss was allocated between the Lumen Pension Plan and the Lumen Combined Pension Plan. Following a revaluation of the pension obligation and pension assets for the Lumen Pension Plan, in preparation for the closing of the sale of the ILEC business, we contributed approximately $319 million of Lumen's cash to the Lumen Pension Plan trust to fully fund the pension plan in September 2022. The amounts allocated to the Lumen Pension Plan were subject to adjustment up to the closing of the sale of the ILEC business on October 3, 2022, at which time the plan was transferred along with the rest of the assets and liabilities of the ILEC business. We recognized pension costs related to both plans through the sale of the ILEC business, at which time balances related to the Lumen Pension Plan were reflected in the calculation of our gain on the sale of the business.

Pension Benefits

United States funding laws require a company with a pension shortfall to fund the annual cost of benefits earned in addition to a seven-year amortization of the shortfall. Our funding policy for our Combined Pension Plan is to make contributions with the objective of accumulating ample assets to pay all qualified pension benefits when due under the terms of the plan. The accounting unfunded status of the Combined Pension Plan was $736 million and $580 million as of December 31, 2023 and 2022, respectively.

We made no voluntary cash contributions to the Combined Pension Plan in 2023 or 2022. As discussed above, we contributed approximately $319 million of cash to the Lumen Pension Plan trust to fully fund the pension plan in September 2022 in preparation for the closing of the sale of the ILEC business. We paid $5 million of benefits directly to participants of our non-qualified pension plans in both 2023 and 2022.

Benefits paid by the Combined Pension Plan are paid through a trust that holds all of the Plan's assets. The amount of required contributions to the Combined Pension Plan in 2024 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. Based on current laws and circumstances, we do not believe we are required to make any contributions to the Combined Pension Plan in 2024 and we do not expect to make voluntary contributions to the trust for the Combined Pension Plan in 2024. We estimate that in 2024 we will pay $4 million of benefits directly to participants of our non-qualified pension plans.
We recognize in our consolidated balance sheets the funded status of the legacy Level 3 defined benefit post-retirement plans. These plans were fully funded as of December 31, 2023 and 2022. Additionally, as previously mentioned, we sponsor unfunded non-qualified pension plans for certain current and former highly-compensated employees. The net unfunded status of our non-qualified pension plans was $33 million and $35 million for the years ended December 31, 2023 and 2022, respectively. Due to the insignificant impact of these pension plans on our consolidated financial statements, we have predominantly excluded them from the remaining employee benefit disclosures in this Note, unless otherwise specifically stated.

Post-Retirement Benefits

Our post-retirement benefit plans provide post-retirement benefits to qualified retirees and allow (i) eligible employees retiring before certain dates to receive benefits at no or reduced cost and (ii) eligible employees retiring after certain dates to receive benefits on a shared cost basis. The post-retirement benefits not paid by the trusts are funded by us and we expect to continue funding these post-retirement obligations as benefits are paid. The accounting unfunded status of our qualified post-retirement benefit plan was $1.9 billion and $2.0 billion as of December 31, 2023 and 2022, respectively.

Assets in the post-retirement trusts were substantially depleted as of December 31, 2016; as of December 31, 2019 the Company ceased to pay certain post-retirement benefits through the trusts. No contributions were made to the post-retirement trusts in 2023, nor 2022. Benefits are paid directly by us with available cash. In 2023, we paid $194 million of post-retirement benefits, net of participant contributions and direct subsidies. In 2024, we currently expect to pay directly $193 million of post-retirement benefits, net of participant contributions and direct subsidies.

We expect our expected health care cost trend to range from 5.4% to 7.50% in 2024 and grading to 4.50% by 2031. Our post-retirement benefit cost, for certain eligible legacy Qwest retirees and certain eligible legacy CenturyLink retirees, is capped at a set dollar amount. Therefore, those health care benefit obligations are not subject to increasing health care trends after the effective date of the caps.

Expected Cash Flows

The Combined Pension Plan payments, post-retirement health care benefit payments and premiums, and life insurance premium payments are either distributed from plan assets or paid by us. The estimated benefit payments provided below are based on actuarial assumptions using the demographics of the employee and retiree populations and have been reduced by estimated participant contributions.
Combined Pension PlanPost-Retirement
Benefit Plans
Medicare Part D
Subsidy Receipts
 (Dollars in millions)
Estimated future benefit payments:   
2024$574 195 (2)
2025493 191 (2)
2026475 186 (2)
2027458 181 (2)
2028440 174 (2)
2029 - 20331,974 762 (6)
Net Periodic Benefit Expense

We utilize a full yield curve approach in connection with estimating the service and interest components of net periodic benefit expense by applying the specific spot rates along the yield curve used in the determination of the benefit obligation to the relevant projected cash flow.

The actuarial assumptions used to compute the net periodic benefit expense for our Combined Pension Plan and post-retirement benefit plans are based upon information available as of the beginning of the year, as presented in the following table.
 Combined Pension PlanPost-Retirement Benefit Plans
 202320222021202320222021
Actuarial assumptions at beginning of year:      
Discount rate
5.45% - 5.69%
2.29% - 3.12%
1.70% - 2.88%
5.43% - 5.75%
2.19% - 5.78%
1.58% - 2.60%
Rate of compensation increase3.25 %3.25 %3.25 %N/AN/AN/A
Expected long-term rate of return on plan assets(1)
6.50 %5.50 %5.50 %3.00 %4.00 %4.00 %
Initial health care cost trend rateN/AN/AN/A
7.20% / 5.00%
5.00% / 5.75%
6.25% / 5.00%
Ultimate health care cost trend rateN/AN/AN/A4.50 %4.50 %4.50 %
Year ultimate trend rate is reachedN/AN/AN/A203020252025
_______________________________________________________________________________
N/A - Not applicable
(1)Rates are presented net of projected fees and administrative costs.

Prior to the sale of the ILEC business on October 3, 2022, we realized pension costs related to the Lumen Pension Plan. Net periodic benefit expense (income) for our Combined Pension Plan and the Lumen Pension Plan (through October 3, 2022, together the "Pension Plans") includes the following components:
 Pension Plans
Years Ended December 31,
 202320222021
 (Dollars in millions)
Service cost$25 44 56 
Interest cost270 194 201 
Expected return on plan assets(287)(385)(535)
Settlement charges— — 383 
Realized to gain on sale of businesses— 546 — 
Special termination benefits charge— 
Recognition of prior service credit(7)(10)(9)
Recognition of actuarial loss104 122 184 
Net periodic pension expense$107 511 286 
Net periodic benefit expense for our post-retirement benefit plans includes the following components:
 Post-Retirement Plans
Years Ended December 31,
 202320222021
 (Dollars in millions)
Service cost$10 14 
Interest cost103 72 47 
Realized to gain on sale of businesses— (32)— 
Recognition of prior service cost(8)15 
Recognition of actuarial loss(20)(4)
Net periodic post-retirement benefit expense$80 54 80 

Service costs for our Combined Pension Plan and post-retirement benefit plans are included in the cost of services and products and selling, general and administrative line items on our consolidated statements of operations and all other costs listed above, except for amounts realized as part of the net gain on sale of businesses, are included in other (expense) income, net on our consolidated statements of operations for the years ended December 31, 2023, 2022 and 2021. Additionally, a portion of the service cost is also allocated to certain assets under construction, which are capitalized and reflected as part of property, plant and equipment in our consolidated balance sheets. As a result of ongoing efforts to reduce our workforce, we recognized a one-time charge in 2023 and in 2021 of $2 million and $6 million, respectively, for special termination benefit enhancements paid to certain eligible employees upon voluntary retirement.

Our pension plan contains provisions that allow us, from time to time, to offer lump sum payment options to certain former employees in settlement of their future retirement benefits. We record an accounting settlement charge, consisting of the recognition of certain deferred costs of the pension plan associated with these lump sum payments only if, in the aggregate, they exceed or are probable to exceed the sum of the annual service and interest costs for the plan’s net periodic pension benefit cost, which represents the settlement accounting threshold. The lump sum pension settlement payments for 2021 exceeded the settlement threshold. In addition, during the fourth quarter of 2021, we executed an annuity purchase contract with a third party insurer that triggered additional settlement activity (see discussion above for further information). As a result, we recognized a non-cash settlement charge of $383 million as of December 31, 2021 to accelerate the recognition of a portion of the previously unrecognized actuarial losses in the qualified pension plan, which is reflected in other (expense) income, net in our consolidated statement of operations for the year ended December 31, 2021. This non-cash charge increased our recorded net loss and increased our recorded accumulated deficit, with an offset to accumulated other comprehensive loss in shareholders' equity for the year ended December 31, 2021. The amount of any future non-cash settlement charges will be dependent on several factors, including the total amount of our future lump sum benefit payments.

Benefit Obligations

The actuarial assumptions used to compute the funded status for the plans are based upon information available as of December 31, 2023 and 2022 and are as follows:
 Combined Pension PlanPost-Retirement Benefit Plans
 December 31,December 31,
 2023202220232022
Actuarial assumptions at end of year:    
Discount rate5.21 %5.56 %5.20 %5.55 %
Rate of compensation increase3.25 %3.25 %N/AN/A
Initial health care cost trend rateN/AN/A
7.50% / 5.40%
7.20% / 5.00%
Ultimate health care cost trend rateN/AN/A4.50 %4.50 %
Year ultimate trend rate is reachedN/AN/A20312030
_______________________________________________________________________________
N/A - Not applicable
In 2021, we adopted the revised mortality tables and projection scales released by the Society of Actuaries, which increased the projected benefit obligation of our benefit plans by $37 million for 2021. The Society of Actuaries did not release any revised mortality tables or projection scales in 2022 or 2023.

The short-term and long-term interest crediting rates during 2023 for cash balance components of the Combined Pension Plan were 4.0% and 3.5%, respectively.

The following tables summarize the change in the benefit obligations for the Combined Pension Plan and post-retirement benefit plans:
 Combined Pension Plan
Years Ended December 31,
 202320222021
 (Dollars in millions)
Change in benefit obligation   
Benefit obligation at beginning of year$5,295 9,678 12,202 
Plan spin-off— (2,552)— 
Service cost25 37 56 
Interest cost270 154 201 
Plan amendments— — (13)
Special termination benefits charge— 
Actuarial loss (gain)114 (1,432)(337)
Benefits paid from plan assets(494)(590)(766)
Settlement payments and annuity purchase— — (1,671)
Benefit obligation at end of year$5,212 5,295 9,678 

 Post-Retirement Benefit Plans
Years Ended December 31,
 202320222021
 (Dollars in millions)
Change in benefit obligation   
Benefit obligation at beginning of year$1,995 2,781 3,048 
Benefit obligation transferred to purchaser upon sale of business— (26)— 
Service cost10 14 
Interest cost103 72 47 
Participant contributions32 37 41 
Direct subsidy receipts
Plan amendments— (41)— 
Actuarial loss (gain)14 (591)(125)
Benefits paid by company(228)(249)(247)
Benefits paid from plan assets(4)— — 
Benefit obligation at end of year$1,919 1,995 2,781 
Plan Assets

We maintain plan assets for our Combined Pension Plan and certain post-retirement benefit plans. As previously noted, assets in the post-retirement benefit plan trusts were substantially depleted as of December 31, 2016. The fair value of post-retirement benefit plan assets was $1 million, $5 million and $5 million at December 31, 2023, 2022 and 2021, respectively. Due to the insignificance of these assets on our consolidated financial statements, we have predominantly excluded them from the disclosures of plan assets in this Note, unless otherwise indicated.

The following table summarizes the change in the fair value of plan assets for the Combined Pension Plan:

 Combined Pension Plan
Years Ended December 31,
 202320222021
 (Dollars in millions)
Change in plan assets   
Fair value of plan assets at beginning of year$4,715 8,531 10,546 
Plan spin-off— (2,239)— 
Return on plan assets255 (987)422 
Benefits paid from plan assets(494)(590)(766)
Settlement payments and annuity purchase— — (1,671)
Fair value of plan assets at end of year$4,476 4,715 8,531 

The expected rate of return on plan assets is the long-term rate of return we expect to earn on the plan's assets, net of administrative expenses paid from plan assets. It is determined annually based on the strategic asset allocation and the long-term risk and return forecast for each asset class.

Our investment objective for the Combined Pension Plan assets is to achieve an attractive risk-adjusted return over time that will provide for the payment of benefits and minimize the risk of large losses. We employ a liability-aware investment strategy designed to reduce the volatility of pension assets relative to pension liabilities. This strategy is evaluated frequently and is expected to evolve over time with changes in the funded status and other factors. Approximately 50% of plan assets is targeted to long-duration investment grade bonds and interest rate sensitive derivatives and 50% is targeted to diversified equity, fixed income and private market investments that are expected to outperform the liability with moderate funded status risk. At the beginning of 2024, our expected annual long-term rate of return on pension assets before consideration of administrative expenses is assumed to be 7.0%. Administrative expenses, including projected PBGC (Pension Benefit Guaranty Corporation) premiums, reduce the annual long-term expected return, net of administrative expenses, to 6.5%.

Permitted investments: Plan assets are managed consistent with the restrictions set forth by the Employee Retirement Income Security Act of 1974, as amended.

Fair Value Measurements: 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. For additional information on the fair value hierarchy, see Note 14—Fair Value of Financial Instruments.

At December 31, 2023, we used the following valuation techniques to measure fair value for assets. There were no changes to these methodologies during 2023:

Level 1—Assets were valued using the closing price reported in the active market in which the individual security was traded. U.S. Treasury securities are valued at the bid price reported in an active market in which the security is traded. Variation margin due from/(to) brokers is valued at the expected next day cash settlement amount.
Level 2—Assets were valued using quoted prices in markets that are not active, broker dealer quotations, and other methods by which all significant inputs were observable at the measurement date. Fixed income securities primarily utilize observable market information and are based on a spread to U.S. Treasury securities and consider yields available on comparable securities of issuers with similar credit ratings, the new issue market for similar securities, secondary trading markets and dealer quotes. Option adjusted spread models are utilized to evaluate fixed income securities that have early redemption features. Derivative securities traded over the counter are valued based on gains or losses due to fluctuations in indices, interest rates, foreign currency exchange rates, security prices or other underlying factors. Repurchase agreements are valued based on expected settlement per the contract terms.

Level 3—Assets were valued using unobservable inputs in which little or no market data exists as reported by the respective institutions at the measurement date. Valuation methods may consider a range of factors, including estimates based on the assumptions of the investment entity.

The Combined Pension Plan's assets are invested in various asset categories utilizing multiple strategies and investment managers. Interests in commingled funds are fair valued using a practical expedient to the net asset value ("NAV") per unit (or its equivalent) of each fund. The NAV reported by the fund manager is based on the market value of the underlying investments owned by each fund, minus its liabilities, divided by the number of shares outstanding. Commingled funds can be redeemed at NAV, with a frequency that includes daily, monthly, quarterly, semi-annually and annually. These commingled funds include redemption notice periods between same day and 180 days. Investments in private funds, primarily limited partnerships, represent long-term commitments with a fixed maturity date and are also valued at NAV. The plan has unfunded commitments related to certain private fund investments, which in aggregate are not material to the plan. Valuation inputs for these private fund interests are generally based on assumptions and other information not observable in the market. Underlying investments held in funds are aggregated and are classified based on the fund mandate. Investments held in separate accounts are individually classified.

The table below presents the fair value of plan assets by category and the input levels used to determine those fair values at December 31, 2023. It is important to note that the asset allocations do not include market exposures that are gained with derivatives. Investments include dividend and interest receivables, pending trades and accrued expenses.
 Fair Value of Combined Pension Plan Assets at December 31, 2023
 Level 1Level 2Level 3Total
 (Dollars in millions)
Assets
Investment grade bonds (a)$390 1,838 — 2,228 
High yield bonds (b)— 32 36 
Emerging market bonds (c)57 57 — 114 
U.S. stocks (d)247 — 248 
Non-U.S. stocks (e)— — 
Multi-asset strategies (l)28 — — 28 
Total investments, excluding investments valued at NAV$728 1,927 2,660 
Liabilities
Repurchase agreements & other obligations (n)$— (375)— (375)
Derivatives (m)(1)— — (1)
Investments valued at NAV2,192 
Total pension plan assets   $4,476 
The table below presents the fair value of plan assets by category and the input levels used to determine those fair values at December 31, 2022. It is important to note that the asset allocations do not include market exposures that are gained with derivatives. Investments include dividend and interest receivable, pending trades and accrued expenses.
 Fair Value of Combined Pension Plan Assets at December 31, 2022
 Level 1Level 2Level 3Total
 (Dollars in millions)
Assets
Investment grade bonds (a)$446 1,720 — 2,166 
High yield bonds (b)— 48 52 
Emerging market bonds (c)49 78 — 127 
U.S. stocks (d)214 — 215 
Non-U.S. stocks (e)149 — 150 
Multi-asset strategies (l)25 — — 25 
Cash equivalents and short-term investments (o)— — 
Total investments, excluding investments valued at NAV$883 1,848 2,736 
Liabilities
Repurchase agreements (n)$— (269)— (269)
Derivatives (m)(1)(10)— (11)
Investments valued at NAV2,259 
Total pension plan assets   $4,715 

The table below presents the fair value of plan assets valued at NAV by category for our Combined Pension Plan at December 31, 2023 and 2022.
 Fair Value of Plan Assets Valued at NAV
 Combined Pension Plan at
December 31,
20232022
 (Dollars in millions)
Investment grade bonds (a)$105 99 
High yield bonds (b)110 81 
U.S. stocks (d)51 79 
Non-U.S. stocks (e)412 270 
Emerging market stocks (f)10 15 
Private equity (g)272 326 
Private debt (h)421 438 
Market neutral hedge funds (i)77 135 
Directional hedge funds (j)124 166 
Real estate (k)265 333 
Multi-asset strategies (l)27 24 
Cash equivalents and short-term investments (o)318 293 
Total investments valued at NAV$2,192 2,259 
Below is an overview of the asset categories and the underlying strategies used in the preceding tables:

(a) Investment grade bonds represent investments in U.S. Treasury securities, agencies, corporate bonds, mortgage-backed securities, asset-backed securities and commercial mortgage-backed securities.

(b) High yield bonds represent investments in below investment grade fixed income securities.

(c) Emerging market bonds represent investments issued by governments and other entities located in emerging countries.

(d) U.S. stocks represent investments in stocks of U.S. based companies.

(e) Non-U.S. stocks represent investments in companies based in developed countries outside the U.S.

(f) Emerging market stocks represent investments in stocks of companies located in emerging markets.

(g) Private equity represents non-public investments in domestic and foreign buy out and venture capital funds. Private equity funds are primarily structured as limited partnerships and are valued according to the valuation policy of each partnership, subject to prevailing accounting and other regulatory guidelines.

(h) Private debt represents non-public investments in distressed or mezzanine debt.

(i) Market neutral hedge funds hold investments in a diversified mix of instruments that are intended in combination to exhibit low correlations to market fluctuations. These investments are typically combined with futures to achieve uncorrelated excess returns over various markets.

(j) Directional hedge funds—This asset category represents investments that may exhibit somewhat higher correlations to market fluctuations than the market neutral hedge funds.

(k) Real estate represents investments in a diversified portfolio of real estate properties.

(l) Multi-asset strategies represent broadly diversified strategies that have the flexibility to tactically adjust exposures to different asset classes through time.

(m) Derivatives include exchange traded futures contracts as well as privately negotiated over the counter contracts. The market values represent gains or losses that occur due to differences between stated contract terms and fluctuations in underlying market instruments.

(n) Repurchase agreements and other obligations includes contracts where the security owner sells a security with the agreement to buy it back at a future date and price. Other obligations include obligations to repay cash collateral held by a plan, net liability for investment purchases pending settlement, and accrued plan expenses.

(o) Cash equivalents and short-term investments represent investments that are used in conjunction with derivatives positions or are used to provide liquidity for the payment of benefits or other purposes.

Derivative instruments: Derivative instruments are used to reduce risk as well as provide return. The gross notional exposure of the derivative instruments directly held by the Combined Pension Plan is shown below. The notional amount of the derivatives corresponds to market exposure but does not represent an actual cash investment.
 Gross Notional Exposure
 Combined Pension Plan
Years Ended December 31,
 20232022
 (Dollars in millions)
Derivative instruments:  
Exchange-traded U.S. equity futures$60 70 
Exchange-traded Treasury and other interest rate futures1,136 1,256 
Exchange-traded Foreign currency futures
Interest rate swaps214 82 
Credit default swaps72 139 
Index swaps94 90 
Foreign exchange forwards57 50 
Options32 251 

Concentrations of Risk: Investments, in general, are exposed to various risks, such as significant world events, interest rate, credit, foreign currency and overall market volatility risk. These risks are managed by broadly diversifying assets across numerous asset classes and strategies with differing expected returns, volatilities and correlations. Risk is also broadly diversified across numerous market sectors and individual companies. Financial instruments that potentially subject the plans to concentrations of counterparty risk consist principally of investment contracts with high quality financial institutions. These investment contracts are typically collateralized obligations and/or are actively managed, limiting the amount of counterparty exposure to any one financial institution. Although the investments are well diversified, the value of plan assets could change materially depending upon the overall market volatility, which could affect the funded status of the plan.

The table below presents a rollforward of the Combined Pension Plan assets valued using Level 3 inputs:
 Combined Pension Plan Assets Valued Using Level 3 Inputs
 High
Yield
Bonds
U.S. StocksTotal
 (Dollars in millions)
Balance at December 31, 2021$11 
Dispositions(1)(4)(5)
Actual return on plan assets(1)— (1)
Balance at December 31, 2022
(Dispositions) acquisitions(2)— (2)
Actual return on plan assets— 
Balance at December 31, 2023$

Certain gains and losses are allocated between assets sold during the year and assets still held at year-end based on transactions and changes in valuations that occurred during the year. These allocations also impact our calculation of net acquisitions and dispositions.

For the year ended December 31, 2023, the investment program produced actual gains on Combined Pension Plan assets of $255 million as compared to expected returns of $287 million, for a difference of $32 million. For the year ended December 31, 2022, the investment program produced actual losses on Combined Pension Plan assets of $987 million as compared to the expected returns of $329 million, for a difference of $1.3 billion. The short-term annual returns on plan assets will almost always be different from the expected long-term returns and the plans could experience net gains or losses, due primarily to the volatility occurring in the financial markets during any given year.
Unfunded Status

The following table presents the unfunded status of the Combined Pension Plan and post-retirement benefit plans:
 Combined Pension PlanPost-Retirement
Benefit Plans
 Years Ended December 31,Years Ended December 31,
 2023202220232022
 (Dollars in millions)
Benefit obligation$(5,212)(5,295)(1,919)(1,995)
Fair value of plan assets4,476 4,715 
Unfunded status(736)(580)(1,918)(1,990)
Current portion of unfunded status— — (193)(210)
Non-current portion of unfunded status$(736)(580)(1,725)(1,780)

The current portion of our post-retirement benefit obligations is recorded on our consolidated balance sheets in accrued expenses and other current liabilities-salaries and benefits.
Accumulated Other Comprehensive Loss-Recognition and Deferrals

The following table presents cumulative items not recognized as a component of net periodic benefits expense as of December 31, 2022, items recognized as a component of net periodic benefits expense in 2023, additional items deferred during 2023 and cumulative items not recognized as a component of net periodic benefits expense as of December 31, 2023. The items not recognized as a component of net periodic benefits expense have been recorded on our consolidated balance sheets in accumulated other comprehensive loss:

 As of and for the Years Ended December 31,
2022Recognition
of Net
Periodic
Benefits
Expense
DeferralsNet
Change in
AOCL
2023
 (Dollars in millions)
Accumulated other comprehensive (loss) income     
Pension plans:     
Net actuarial (loss) gain$(1,752)80 (147)(67)(1,819)
Settlement charge383 — — — 383 
Prior service benefit (cost)17 (7)— (7)10 
Deferred income tax benefit (expense)367 (23)37 14 381 
Total pension plans(985)50 (110)(60)(1,045)
Post-retirement benefit plans:     
Net actuarial gain (loss)371 (20)(14)(34)337 
Prior service benefit (cost)37 (8)— (8)29 
Curtailment loss— — — 
Deferred income tax (expense) benefit(104)10 (94)
Total post-retirement benefit plans308 (21)(11)(32)276 
Total accumulated other comprehensive (loss) income$(677)29 (121)(92)(769)
The following table presents cumulative items not recognized as a component of net periodic benefits expense as of December 31, 2021, items recognized as a component of net periodic benefits expense in 2022, additional items deferred during 2022 and cumulative items not recognized as a component of net periodic benefits expense as of December 31, 2022. The items not recognized as a component of net periodic benefits expense have been recorded on our consolidated balance sheets in accumulated other comprehensive loss:

 As of and for the Years Ended December 31,
 2021Recognition
of Net
Periodic
Benefits
Expense
DeferralsNet
Change in
AOCL
2022
 (Dollars in millions)
Accumulated other comprehensive (loss) income     
Pension plans:     
Net actuarial (loss) gain$(2,564)688 124 812 (1,752)
Settlement charge383 — — — 383 
Prior service benefit (cost)45 (28)— (28)17 
Deferred income tax benefit (expense)559 (166)(26)(192)367 
Total pension plans(1,577)494 98 592 (985)
Post-retirement benefit plans:     
Net actuarial (loss) gain(217)(3)591 588 371 
Prior service (cost) benefit(5)41 42 37 
Curtailment loss— — — 
Deferred income tax benefit (expense)54 (159)(158)(104)
Total post-retirement benefit plans(164)(1)473 472 308 
Total accumulated other comprehensive (loss) income$(1,741)493 571 1,064 (677)

Medicare Prescription Drug, Improvement and Modernization Act of 2003

We sponsor post-retirement health care plans with several benefit options that provide prescription drug benefits that we deem actuarially equivalent to or exceeding Medicare Part D. We recognize the impact of the federal subsidy received under the Medicare Prescription Drug, Improvement and Modernization Act of 2003 in the calculation of our post-retirement benefit obligation and net periodic post-retirement benefit expense.

Other Benefit Plans

Health Care and Life Insurance

We provide health care and life insurance benefits to essentially all of our active employees. We are largely self-funded for the cost of the health care plan. Our health care benefit expense for current employees was $288 million, $296 million and $309 million for the years ended December 31, 2023, 2022 and 2021, respectively. Union-represented employee benefits are based on negotiated collective bargaining agreements. Employees contributed $89 million, $101 million, $120 million for the years ended December 31, 2023, 2022 and 2021, respectively. Our group basic life insurance plans are fully insured and the premiums are paid by us.
401(k) Plans

We sponsor a qualified defined contribution plan covering substantially all of our U.S. employees. Under this plan, employees may contribute a percentage of their annual compensation up to certain maximums, as defined by the plan and by the Internal Revenue Service. Currently, we match a percentage of employee contributions in cash. At December 31, 2023 and 2022, the assets of the plan included approximately 9 million and 10 million shares of our common stock, all of which were the result of the combination of previous employer match and participant directed contributions. We recognized expenses related to this plan of $87 million, $91 million and $96 million for the years ended December 31, 2023, 2022 and 2021, respectively.

Deferred Compensation Plans

We sponsor non-qualified deferred compensation plans for various groups that included certain of our current and former highly compensated employees. The value of liabilities related to these plans was not significant.
v3.24.0.1
Stock-based Compensation
12 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Stock-based Compensation Stock-based Compensation
We maintain an equity incentive program that allows our Board of Directors (through its Compensation Committee or a senior officer acting under delegated authority) to grant incentives to certain employees and outside directors in one or more forms, including: incentive and non-qualified stock options, stock appreciation rights, restricted stock awards, restricted stock units and market and performance shares.

Restricted Stock Awards and Restricted Stock Unit Awards

We grant equity based restricted stock and restricted stock units that contain service only conditions for vesting (“Service Awards”), awards that contain both service and market conditions for vesting (“Market Awards”) and awards that contain both service and performance conditions for vesting (“Performance Awards”). The fair value of Service Awards is based upon the closing stock price on the accounting grant date and the awards generally vest over periods ranging from one to three years. The fair value of Market Awards is determined using Monte-Carlo simulations and the awards vest over periods up to three years. The number of shares ultimately earned for Market Awards is typically based upon our total shareholder return as compared to the return of selected peer companies and can range between 0% and 200% of the target number of shares for the award. The fair value of Performance Awards is based upon the closing stock price on the accounting grant date; however, the award value may increase, or decrease based upon the outcome of the performance conditions. Performance Awards vest over periods of up to three-years and specify a target number of shares for the award. The recipient ultimately can receive between 0% and 200% of the target number of shares depending upon the outcome of the performance conditions.

The following table summarizes activity involving restricted stock and restricted stock unit awards for the year ended December 31, 2023:

Number of
Shares
Weighted-
Average
Grant Date
Fair Value
 (in thousands) 
Non-vested at December 31, 2022
27,279 $12.13 
Granted14,787 1.85 
Vested(7,170)10.10 
Forfeited(6,844)13.79 
Non-vested at December 31, 2023
28,052 6.82 

During 2023, we granted 14.8 million shares of restricted stock and restricted stock unit awards at a weighted-average price of $1.85. During 2022, we granted 18.8 million shares of restricted stock and restricted stock unit awards at a weighted-average price of $11.47. During 2021, we granted 13.9 million shares of restricted stock and restricted stock unit awards at a weighted-average price of $13.95. The total fair value of restricted stock and restricted stock unit awards that vested during 2023, 2022 and 2021, was $21 million, $98 million and $139 million, respectively. We do not estimate forfeitures but recognize them as they occur.
Compensation Expense and Tax Benefit

For Service Awards that vest ratably over the service period, we recognize compensation expense on a straight-line basis over the requisite service period for the entire award. For Service Awards that vest at the end of the service period and for Market Awards, we recognize compensation expense over the service period. For our Performance Awards, we recognize compensation expense over the service period and based upon the expected performance outcome, until the final performance outcome is determined. Total compensation expense for all stock-based payment arrangements for the years ended December 31, 2023, 2022 and 2021, was $52 million, $98 million and $120 million, respectively. Our tax benefit recognized in the consolidated statements of operations for our stock-based payment arrangements for the years ended December 31, 2023, 2022 and 2021, was $12 million, $25 million and $29 million, respectively. At December 31, 2023, there was $65 million of total unrecognized compensation expense related to our stock-based payment arrangements, which we expect to recognize over a weighted-average period of 1.5 years.
v3.24.0.1
(Loss) Earnings Per Common Share
12 Months Ended
Dec. 31, 2023
Earnings Per Share [Abstract]  
(Loss) Earnings Per Common Share (Loss) Earnings Per Common Share
Basic and diluted (loss) earnings per common share for the years ended December 31, 2023, 2022 and 2021 were calculated as follows:

 Years Ended December 31,
 202320222021
 (Dollars in millions, except per share amounts, shares in thousands)
(Loss) income (numerator)   
Net (loss) income$(10,298)(1,548)2,033 
Net (loss) income applicable to common stock for computing basic (loss) earnings per common share(10,298)(1,548)2,033 
Net (loss) income as adjusted for purposes of computing diluted (loss) earnings per common share$(10,298)(1,548)2,033 
Shares (denominator):  
Weighted average number of shares:   
Outstanding during period1,006,787 1,028,069 1,077,393 
Non-vested restricted stock(23,706)(20,552)(17,852)
Weighted average shares outstanding for computing basic (loss) earnings per common share983,081 1,007,517 1,059,541 
Incremental common shares attributable to dilutive securities:   
Shares issuable under convertible securities— — 10 
Shares issuable under incentive compensation plans— — 7,227 
Number of shares as adjusted for purposes of computing diluted (loss) earnings per common share983,081 1,007,517 1,066,778 
Basic (loss) earnings per common share$(10.48)(1.54)1.92 
Diluted (loss) earnings per common share(1)
$(10.48)(1.54)1.91 
______________________________________________________________________________
(1)For the years ended December 31, 2023 and December 31, 2022, we excluded from the calculation of diluted loss per share 0.3 million and 3.8 million shares, respectively, potentially issuable under incentive compensation plans or convertible securities, as their effect, if included, would have been anti-dilutive.

Our calculation of diluted (loss) 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 were 22.5 million, 13.8 million and 3.2 million for 2023, 2022 and 2021, respectively.
v3.24.0.1
Fair Value of Financial Instruments
12 Months Ended
Dec. 31, 2023
Fair Value Disclosures [Abstract]  
Fair Value of Financial Instruments Fair Value of Financial Instruments
Our financial instruments consist of cash, cash equivalents, restricted cash, accounts receivable, accounts payable, long-term debt (excluding finance lease and other obligations), interest rate swap contracts, certain equity investments and certain indemnification obligations. Due primarily to their short-term nature, the carrying amounts of our cash, cash equivalents, restricted cash, 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 using the below-described fair value hierarchy.

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 inputs other than quoted market prices in active markets that are either directly or indirectly observable such as 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 following financial assets and liabilities as of December 31, 2023 and 2022:
  As of December 31, 2023As of December 31, 2022
 Input
Level
Carrying
Amount
Fair ValueCarrying
Amount
Fair Value
  (Dollars in millions)
Equity securities(1)
1$— — 22 22 
Long-term debt, excluding finance lease and other obligations
219,703 13,304 20,255 17,309 
Indemnifications related to the sale of the Latin American business(2)
386 86 86 86 
______________________________________________________________________
(1)For the years ended December 31, 2023 and 2022, we recognized a $22 million and a $109 million of loss on equity securities in other (expense) income, net in our consolidated statements of operations.
(2)Nonrecurring fair value is measured as of August 1, 2022.

Investment Held at Net Asset Value

We hold an investment in a limited partnership created as a holding company for various investments. The limited partnership has sole discretion as to the amount and timing of distributions of the underlying assets. As of December 31, 2023, the underlying investments held by the limited partnership were traded in active markets and as such, we account for our investment in the limited partnership using net asset value ("NAV"). Subject to restrictions imposed by law and other provisions of the limited partnership agreement, the general partner has the sole discretion as to the amounts and timing of distributions of partnership assets to partners. The following table summarizes the net asset value of our investment in this limited partnership.
As of December 31, 2023As of December 31, 2022
Net Asset Value
(Dollars in millions)
Investment in limited partnership(1)
$10 85 
______________________________________________________________________
(1)For the years ended December 31, 2023 and December 31, 2022, we recognized $75 million and $83 million of loss on investment, respectively, reflected in other (expense) income, net in our consolidated statement of operations.
v3.24.0.1
Derivative Financial Instruments
12 Months Ended
Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Derivative Financial Instruments Derivative Financial Instruments
 
From time to time, we use derivative financial instruments, primarily interest rate swaps, to manage our exposure to fluctuations in interest rates. Our primary objective in managing interest rate risk is to decrease the volatility of our earnings and cash flows affected by changes in the underlying rates. We have floating rate long-term debt (see Note 7—Long-Term Debt and Credit Facilities). These obligations expose us to variability in interest payments due to changes in interest rates. If interest rates increase, our interest expense increases. Conversely, if interest rates decrease, our interest expense also decreases. Through their expiration on June 30, 2022, we designated the interest rate swap agreements described below as cash flow hedges. Under these hedges, we received variable-rate amounts from a counterparty in exchange for us making fixed-rate payments over the lives of the agreements without exchange of the underlying notional amount. The change in the fair value of the interest rate swap agreements was reflected in accumulated other comprehensive loss and was subsequently reclassified into earnings in the period that the hedged transaction affected earnings by virtue of qualifying as effective cash flow hedges. We do not use derivative financial instruments for speculative purposes.
 
In 2019, we entered into variable-to-fixed interest rate swap agreements to hedge the interest on $4.0 billion notional amount of floating rate debt. As of December 31, 2021, we evaluated the effectiveness of our remaining hedges quantitatively and determined that hedges in effect on such dates qualified as effective hedge relationships. All remaining hedges were expired as of December 31, 2022.

Amounts accumulated in accumulated other comprehensive loss related to derivatives were indirectly recognized in earnings as periodic settlement payments were made throughout the term of the swaps.

The amount of unrealized losses recognized in accumulated other comprehensive loss consists of the following (in millions):

Derivatives designated as hedging instruments
Cash flow hedging contracts
Year Ended December 31, 2021
$

The amount of realized losses reclassified from accumulated other comprehensive loss to the statement of operations consists of the following (in millions):

Derivatives designated as hedging instruments20222021
Cash flow hedging contracts
Years Ended December 31,$22 83 

For the year ended December 31, 2022, amounts included in accumulated other comprehensive loss at the beginning of the period were reclassified into earnings upon the settlement of the cash flow hedging contracts on March 31, 2022 and June 30, 2022. During the year ended December 31, 2022, $19 million of net losses on the interest rate swaps have been reflected in our consolidated statements of operations upon settlement of the agreements in the first half of 2022.
v3.24.0.1
Income Taxes
12 Months Ended
Dec. 31, 2023
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The components of the income tax expense are as follows:

 Years Ended December 31,
 202320222021
 (Dollars in millions)
Income tax expense:   
Federal   
Current$838 
Deferred(2)(332)514 
State   
Current(6)283 42 
Deferred55 (191)72 
Foreign   
Current— 32 23 
Deferred(73)12 
Total income tax expense$61 557 668 

 Years Ended December 31,
 202320222021
 (Dollars in millions)
Income tax expense was allocated as follows:   
Income tax expense in the consolidated statements of operations:   
Attributable to income$61 557 668 
Stockholders' equity:   
Tax effect of the change in accumulated other comprehensive loss$(21)297 222 

The following is a reconciliation from the statutory federal income tax rate to our effective income tax rate:
 Years Ended December 31,
 202320222021
 (Percentage of pre-tax (loss) income)
Statutory federal income tax rate21.0 %21.0 %21.0 %
State income taxes, net of federal income tax benefit(0.2)%(8.8)%3.3 %
Goodwill impairment(21.9)%(68.9)%— %
Change in liability for unrecognized tax position(0.1)%(0.2)%0.1 %
Nondeductible executive stock compensation— %(0.1)%0.2 %
Change in valuation allowance1.3 %0.9 %— %
Net foreign income taxes— %3.0 %0.6 %
Research and development credits0.1 %1.1 %(0.5)%
Divestitures of businesses(1)
(0.4)%(4.0)%— %
Other, net(0.4)%(0.2)%— %
Effective income tax rate(0.6)%(56.2)%24.7 %
_______________________________________________________________________________
(1)Includes GILTI (as defined below) incurred as a result of the sale of our Latin American business.
The effective tax rate for the year ended December 31, 2023 includes a $2.2 billion unfavorable impact of a non-deductible goodwill impairment and a $137 million favorable impact as a result of utilizing available capital losses generated by the sale of our Latin American business in 2022. The effective tax rate for the year ended December 31, 2022 includes a $682 million unfavorable impact of non-deductible goodwill impairments and $128 million unfavorable impact related to incurring tax on Global Intangible Low-Tax Income ("GILTI") as a result of the sale of our Latin American business.

The tax effects of temporary differences that gave rise to significant portions of the deferred tax assets and deferred tax liabilities were as follows:
 As of December 31,
 2023
2022(1)
 (Dollars in millions)
Deferred tax assets  
Post-retirement and pension benefit costs$659 725 
Net operating loss carryforwards794 871 
Other employee benefits23 85 
Other511 519 
Gross deferred tax assets1,987 2,200 
Less valuation allowance(399)(550)
Net deferred tax assets1,588 1,650 
Deferred tax liabilities  
Property, plant and equipment, primarily due to depreciation differences(3,332)(3,046)
Goodwill and other intangible assets(1,271)(1,634)
Gross deferred tax liabilities(4,603)(4,680)
Net deferred tax liability$(3,015)(3,030)
_______________________________________________________________________________
(1)Excludes $138 million of deferred tax assets and $38 million of deferred tax liabilities related to the EMEA business sold November 1, 2023, that were classified as held for sale as of December 31, 2022.

Of the $3.0 billion net deferred tax liability at December 31, 2023 and 2022, respectively, $3.1 billion and $3.2 billion is reflected as a long-term liability and $112 million and $133 million is reflected as a net noncurrent deferred tax asset, in other, net on our consolidated balance sheets at December 31, 2023 and 2022, respectively.

Income taxes receivable as of December 31, 2023 was $273 million and income taxes payable as of December 31, 2022 was $943 million.

At December 31, 2023, we had federal NOLs of approximately $800 million, net of expirations from Section 382 limitations and uncertain tax positions, for U.S. federal income tax purposes. We expect to use substantially all of these tax attributes to reduce our future federal tax liabilities, although the timing of that use will depend upon our future earnings and future tax circumstances. Our ability to use these NOLs is subject to annual limits imposed by Section 382. As a result, we anticipate that our cash income tax liabilities will increase in future periods. If unused, the NOLs will expire between 2026 and 2029.

At December 31, 2023 we had state net operating loss carryforwards of $13 billion (net of uncertain tax positions). Our ability to use these NOLs is subject to annual limits imposed by Section 382.

We establish valuation allowances when necessary to reduce the deferred tax assets to amounts we expect to realize. As of December 31, 2023, we established a valuation allowance of $399 million as it is more likely than not that this amount of net operating loss will not be utilized prior to expiration. Our valuation allowance at December 31, 2023 and 2022 is primarily related to NOL carryforwards. This valuation allowance decreased by $151 million during 2023, primarily due to the impact of utilization of available capital losses.
A reconciliation of the change in our gross unrecognized tax benefits (excluding both interest and any related federal benefit) from January 1 to December 31 for 2023 and 2022 is as follows:
20232022
 (Dollars in millions)
Unrecognized tax benefits at beginning of year$1,318 1,375 
Decrease in tax positions of prior periods netted against deferred tax assets(411)(661)
(Decrease) increase in tax positions taken in the current year(73)634 
Increase (decrease) in tax positions taken in the prior year752 (3)
Decrease due to payments/settlements(1)— 
Decrease from the lapse of statute of limitations(52)— 
Decrease related to divestitures of businesses$(109)(27)
Unrecognized tax benefits at end of year$1,424 1,318 

As of December 31, 2023 the total amount of unrecognized tax benefits that, if recognized, would impact the effective income tax rate was $280 million. The unrecognized tax benefits also includes tax positions that, if recognized, would result in adjustments to other tax accounts, primarily deferred taxes, that would not impact the effective tax rate but could impact cash tax amounts payable to taxing authorities.

Our policy is to reflect interest expense associated with unrecognized tax benefits in income tax expense. We had accrued interest (presented before related tax benefits) of approximately $100 million and $26 million at December 31, 2023 and 2022, respectively.

We, or at least one of our subsidiaries, file income tax returns in the U.S. federal jurisdiction and various states and foreign jurisdictions. With few exceptions, we are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2004. The Internal Revenue Service and state and local taxing authorities reserve the right to audit any period where net operating loss carryforwards are available.

Based on our current assessment of various factors, including (i) the potential outcomes of these ongoing examinations, (ii) the expiration of statute of limitations for specific jurisdictions, (iii) the negotiated settlement of certain disputed issues, and (iv) the administrative practices of applicable taxing jurisdictions, it is reasonably possible that the related unrecognized tax benefits for uncertain tax positions previously taken may decrease by up to $676 million within the next 12 months. The actual amount of such decrease, if any, will depend on several future developments and events, many of which are outside our control.

In August 2022, the Inflation Reduction Act was signed into law and which, among other things, implemented a corporate alternative minimum tax (“CAMT”) on adjusted financial statement income effective for tax periods occurring after December 31, 2022. The CAMT had no material impact on our financial results as of December 31, 2023. In addition, the Organization for Economic Co-operation and Development has issued Pillar Two model rules introducing a new global minimum tax of 15% intended to be effective on January 1, 2024. While the US has not yet adopted the Pillar Two rules, various other governments around the world are enacting legislation, some of which are effective for tax periods after December 31, 2023. While the global minimum tax will increase our administrative and compliance burdens, it is expected to have an immaterial impact to our financial statements.
v3.24.0.1
Segment Information
12 Months Ended
Dec. 31, 2023
Segment Reporting [Abstract]  
Segment Information Segment Information
We report our results within two segments: Business and Mass Markets.

Under our Business segment we provide products and services to meet the needs of our enterprise and wholesale customers under four distinct sales channels: Large Enterprise, Mid-Market Enterprise, Public Sector and Wholesale. For Business segment revenue, we report the following product categories: Grow, Nurture, Harvest and Other, in each case through the sales channels outlined above. The Business segment included the results of our Latin American, ILEC and EMEA businesses prior to their sales on August 1, 2022, October 3, 2022 and November 1, 2023, respectively.

Under our Mass Markets Segment, we provide products and services to residential and small business customers. We report the following product categories: Fiber Broadband, Other Broadband and Voice and Other. The Mass Markets segment included the results of our ILEC business prior to its sale on October 3, 2022.

See detailed descriptions of these product and service categories in Note 4—Revenue Recognition.

As described in more detail below, our segments are managed based on the direct costs of providing services to their customers and directly associated selling, general and administrative costs (primarily salaries and commissions). Shared costs are managed separately and included in "other unallocated expense" in the table included below "—Revenue and Expenses". As referenced above, we reclassified certain prior period amounts to conform to the current period presentation. See Note 1—Background and Summary of Significant Accounting Policies for additional detail on these changes.

The following tables summarize our segment results for 2023, 2022 and 2021 based on the segment categorization we were operating under at December 31, 2023.
Year Ended December 31, 2023
BusinessMass Markets
(Dollars in millions)
Segment revenue$11,535 3,022 
Segment expense
Cost of services and products3,138 92 
Selling, general and administrative1,232 1,341 
Total expense4,370 1,433 
Total segment adjusted EBITDA$7,165 1,589 

Year Ended December 31, 2022
BusinessMass Markets
(Dollars in millions)
Segment revenue$13,041 4,437 
Segment expense
Cost of services and products3,257 124 
Selling, general and administrative1,215 1,623 
Total expense4,472 1,747 
Total segment adjusted EBITDA$8,569 2,690 
Year Ended December 31, 2021
BusinessMass Markets
(Dollars in millions)
Segment revenue$14,119 5,568 
Segment expense
Cost of services and products3,488 153 
Selling, general and administrative1,273 1,685 
Total expense4,761 1,838 
Total segment adjusted EBITDA$9,358 3,730 

Revenue and Expenses

Our segment revenue includes all revenue from our two segments as described in more detail above. Our segment revenue is based upon each customer's classification. We report our segment revenue based upon all services provided to that segment's customers. Our segment expenses include specific cost of service expenses incurred as a direct result of providing services and products to segment customers, along with selling, general and administrative expenses that are directly associated with specific segment customers or activities. We have not allocated assets or debt to specific segments.

The following items are excluded from our segment results, because they are centrally managed and not monitored by or reported to our chief operating decision maker by segment:

network expenses not incurred as a direct result of providing services and products to segment customers and centrally managed expenses such as Finance, Human Resources, Legal, Marketing, Product Management and IT, all of which are reported as "other unallocated expense" in the table below;

depreciation and amortization expense;

goodwill or other impairments;

interest expense;

stock-based compensation; and

other income and expense items.
The following table reconciles total segment adjusted EBITDA to net (loss) income for the years ended December 31, 2023, 2022 and 2021:
 Years Ended December 31,
 202320222021
 (Dollars in millions)
Total segment adjusted EBITDA$8,754 11,259 13,088 
Depreciation and amortization(2,985)(3,239)(4,019)
Goodwill impairment(10,693)(3,271)— 
Other unallocated expense(4,608)(4,556)(4,664)
Stock-based compensation(52)(98)(120)
Operating (loss) income(9,584)95 4,285 
Total other expense, net(653)(1,086)(1,584)
(Loss) income before income taxes(10,237)(991)2,701 
Income tax expense61 557 668 
Net (loss) income$(10,298)(1,548)2,033 
    
We do not have any single customer that comprises more than 10% of our consolidated total operating revenue.

The assets we hold outside of the U.S. represent less than 10% of our total assets. Revenue from sources outside of the U.S. comprises less than 10% of our total operating revenue.
v3.24.0.1
Commitments, Contingencies and Other Items
12 Months Ended
Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]  
Commitments, Contingencies and Other Items Commitments, Contingencies and Other Items
We are subject to various claims, legal proceedings and other contingent liabilities, including the matters described below, which individually or in the aggregate could materially affect our financial condition, future results of operations or cash flows. As a matter of course, we are prepared to both litigate these matters to judgment as needed, as well as to evaluate and consider reasonable settlement opportunities.

We review our litigation accrual liabilities on a quarterly basis, but in accordance with applicable accounting guidelines only establish accrual liabilities when losses are deemed probable and reasonably estimable and only revise previously-established accrual liabilities when warranted by changes in circumstances, in each case based on then-available information. As such, as of any given date we could have exposure to losses under proceedings as to which no liability has been accrued or as to which the accrued liability is inadequate. Subject to these limitations, at December 31, 2023 and December 31, 2022, we had accrued $84 million and $88 million, respectively, in the aggregate for our litigation and non-income tax contingencies, which is included in other current liabilities or other liabilities in our consolidated balance sheet as of such date. We cannot at this time estimate the reasonably possible loss or range of loss in excess of this $84 million accrual due to the inherent uncertainties and speculative nature of contested proceedings. The establishment of an accrual does not mean that actual funds have been set aside to satisfy a given contingency. Thus, the resolution of a particular contingency for the amount accrued could have no effect on our results of operations but nonetheless could have an adverse effect on our cash flows.

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.
Principal Proceedings

Shareholder Class Action Suits

Lumen and certain Lumen Board of Directors members and officers were named as defendants in a putative shareholder class action lawsuit filed on June 12, 2018 in the Boulder County District Court of the state of Colorado, captioned Houser et al. v. CenturyLink, et al. The complaint asserted claims on behalf of a putative class of former Level 3 shareholders who became CenturyLink, Inc. shareholders as a result of our acquisition of Level 3. It alleged that the proxy statement provided to the Level 3 shareholders failed to disclose various material information of several kinds, including information about strategic revenue, customer loss rates, and customer account issues, among other items. The complaint seeks damages, costs and fees, rescission, rescissory damages, and other equitable relief. In May 2020, the court dismissed the complaint. Plaintiffs appealed that decision, and in March 2022, the appellate court affirmed the district court's order in part and reversed it in part. It then remanded the case to the district court for further proceedings. Plaintiff filed an amended complaint, and we filed a motion to dismiss. The court granted our motion to dismiss and the plaintiffs have appealed that dismissal.

On March 3, 2023, a purported shareholder of Lumen filed a putative class action complaint captioned Voigt v. Lumen Technologies, Inc., et al., Case 3:23-cv-00286-TAD-KDM, in the U.S. District Court for the Western District of Louisiana. The complaint alleges that Lumen and certain of its current or former officers violated the federal securities laws by omitting or misstating material information related to Lumen’s expansion of its Quantum Fiber business. The complaint seeks money damages, attorneys’ fees and costs, and other relief.

On September 15, 2023, a purported shareholder of Lumen filed a putative class action complaint captioned McLemore v. Lumen Technologies, Inc., et al., Case 3:23-cv-01290, in the U.S. District Court for the Western District of Louisiana. The complaint alleges that Lumen and certain of its current or former officers violated the federal securities laws by omitting or misstating material information related to Lumen’s responsibility for environmental degradation allegedly caused by the lead sheathing of certain telecommunications cables. The complaint seeks money damages, attorneys’ fees and costs, and other relief.

State Tax Suits

Since 2012, a number of Missouri municipalities have asserted claims in the Circuit Court of St. Louis County, Missouri, alleging that we and several of our subsidiaries have underpaid taxes. These municipalities are seeking, among other things, declaratory relief regarding the application of business license and gross receipts taxes and back taxes from 2007 to the present, plus penalties and interest. In a February 2017 ruling in connection with one of these pending cases, the court entered an order awarding the plaintiffs $4 million and broadening the tax base on a going-forward basis. We appealed that decision to the Missouri Supreme Court. In December 2019, it affirmed the circuit court's order in some respects and reversed it in others, remanding the case to the circuit court for further proceedings. The Missouri Supreme Court's decision reduced our exposure in the case. In a June 2021 ruling in one of the pending cases, another trial court awarded the cities of Columbia and Joplin approximately $55 million, plus statutory interest. On appeal, the Missouri Court of Appeals affirmed in part and reversed in part, vacated the judgment and remanded the case to the trial court with instructions for further proceedings consistent with the Missouri Supreme Court's 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. Thereafter, based in part on the allegations made by the former employee, several legal proceedings were filed, including consumer class actions in federal and state courts, a series of securities investor class actions in federal courts and several shareholder derivative actions in federal and Louisiana state courts. The derivative cases were brought on behalf of CenturyLink, Inc. against certain current and former officers and directors of the Company and seek damages for alleged breaches of fiduciary duties.

The consumer class actions, the securities investor class actions, and the federal derivative actions were 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. We have settled the consumer and securities investor class actions and the derivative actions.
We have engaged in discussions regarding related claims with a number of state attorneys general, and have entered into agreements settling certain of the consumer practices claims asserted by state attorneys general. While we do not agree with allegations raised in these matters, we have been willing to consider reasonable settlements where appropriate.

December 2018 Outage Proceedings

We experienced an outage on one of our transport networks that impacted voice, IP, 911, and transport services for some of our customers between the 27th and 29th of December 2018. We believe that the outage was caused by a faulty network management card from a third-party equipment vendor.

The FCC and four states (both Washington Utilities and Transportation Commission ("WUTC") and the Washington Attorney General; the Montana Public Service Commission; the Nebraska Public Service Commission; and the Wyoming Public Service Commission) initiated formal investigations. In November 2020, following the FCC's release of a public report on the outage, we negotiated a settlement which was released by the FCC in December 2020. The amount of the settlement was not material to our financial statements.

In December 2020, the Staff of the WUTC filed a complaint against us based on the December 2018 outage, seeking penalties of approximately $7 million for alleged violations of Washington regulations and laws. The Washington Attorney General's office sought penalties of $27 million. Following trial before the WUTC, it issued an order in June 2023 penalizing us for approximately $1 million. We and the Washington Attorney General's office have both filed for reconsideration. Those motions are pending.

Latin American Tax Litigation and Claims

In connection with the 2022 divestiture of our Latin American business, the purchaser assumed responsibility for the Peruvian tax litigation and Brazilian tax claims described in our prior periodic reports filed with the SEC. We agreed to indemnify the purchaser for amounts paid in respect of the Brazilian tax claims. The value of this indemnification is included in the indemnification amount as disclosed in Note 14—Fair Value of Financial Instruments.

Huawei Network Deployment Investigations

Lumen has received requests from the following federal agencies for information relating to the use of equipment manufactured by Huawei Technologies Company ("Huawei") in Lumen’s networks.

DOJ. Lumen has received a civil investigative demand from the U.S. Department of Justice in the course of a False Claims Act investigation alleging that Lumen Technologies, Inc. and Lumen Technologies Government Solutions, Inc. failed to comply with the requirements in federal contracts concerning their use of Huawei equipment. 

FCC. The FCC’s Enforcement Bureau issued a Letter of Inquiry to Lumen Technologies, Inc. regarding its written certifications to the FCC that Lumen has complied with FCC rules governing the use of resources derived from the High Cost Program, Lifeline Program, Rural Health Care Program, E-Rate Program, Emergency Broadband Benefit Program, and the Affordable Connectivity Program. Under these programs, federal funds may not be used to facilitate the deployment or maintenance of equipment or services provided by Huawei, a company that the FCC has determined poses a national security threat to the integrity of communications networks or the communications supply chain.

Team Telecom. The Committee for the Assessment of Foreign Participation in the United States Telecommunications Service Sector (comprised of the U.S. Attorney General, and the Secretaries of the Department of Homeland Security, and the Department of Defense), commonly referred to as Team Telecom, issued questions and requests for information relating to Lumen’s FCC licenses and its use of Huawei equipment.

We are cooperating with the investigations.
Marshall Fire Litigation

On December 30, 2021, a wildfire referred to as the Marshall Fire ignited near Boulder, Colorado. The Marshall Fire killed two people, and it burned thousands of acres, including entire neighborhoods. Approximately 300 lawsuits naming various defendants and asserting various claims for relief have been filed. To date, three of those name our affiliate Qwest Corporation as being at fault: Allstate Fire and Casualty Insurance Company, et al., v. Qwest Corp., et al., Case No. 2023-cv-3048, and Wallace, et al. v, Qwest Corp., et al, Case No. 2023-cv-30488, both of which have been consolidated with Kupfner et al v Public Service Company of Colorado, et al. Case No. 2022-cv-30195. The consolidated proceeding is pending in Colorado District Court, Boulder, Colorado, Preliminary estimates of potential damage claims exceed $2 billion. Qwest is vigorously defending the claims.

911 Surcharge

In June 2021, the Company was served with a complaint filed in the Santa Fe County District Court by Phone Recovery Services, LLC (“PRS”), acting on behalf of the State of New Mexico. The complaint claims Qwest Corporation and CenturyTel of the Southwest have violated the New Mexico Fraud Against Taxpayers Act since 2004 by failing to bill, collect and remit certain 911 surcharges from customers. Through pre-trial proceedings, the Court has narrowed the issues to be resolved by jury, ruling that Lumen bears the burden of proving that its actions were reasonable or known and approved by the State. Qwest is defending the New Mexico claims vigorously, as it has done successfully with other 911 claims involving PRS in other states.

Other Proceedings, Disputes and Contingencies

From time to time, we are involved in other proceedings incidental to our business, including patent infringement allegations, regulatory hearings 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 or commercial disputes.

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 within the next twelve 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 $300,000 in fines and penalties. In addition, in the past we acquired companies that had installed lead-sheathed cables several decades earlier, or had operated certain manufacturing companies in the first part of the 1900s. Under applicable environmental laws, we could be named as a potentially responsible party for a share of the remediation of environmental conditions arising from the historical operations of our predecessors.

The outcome of these other proceedings described under this heading 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 us.

The matters listed in this Note do not reflect all of our contingencies. 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 statements appearing above in this Note, and proceedings currently viewed as immaterial by us may ultimately materially impact us.
Right-of-Way

At December 31, 2023, our future rental commitments and Right-of-Way ("ROW") agreements were as follows:
 Future Rental Commitments and ROW Agreements
 (Dollars in millions)
2024$184 
202564 
202660 
202759 
202851 
2029 and thereafter676 
Total future minimum payments$1,094 

Purchase Commitments

We have several commitments primarily for marketing activities and support services from a variety of vendors to be used in the ordinary course of business totaling $1.0 billion at December 31, 2023. Of this amount, we expect to purchase $403 million in 2024, $378 million in 2025 through 2026, $78 million in 2027 through 2028 and $127 million in 2029 and thereafter. These amounts do not represent our entire anticipated purchases in the future, but represent only those items for which we were contractually committed as of December 31, 2023.
v3.24.0.1
Other Financial Information
12 Months Ended
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Other Financial Information Other Financial Information
Other Current Assets

The following table presents details of other current assets reflected in our consolidated balance sheets:
 As of December 31,
 2023
2022(1)
 (Dollars in millions)
Prepaid expenses$395 319 
Income tax receivable273 — 
Materials, supplies and inventory209 236 
Contract assets19 20 
Contract acquisition costs107 123 
Contract fulfillment costs102 100 
Other14 
Total other current assets
$1,119 803 
______________________________________________________________________
(1)Excludes $59 million of other current assets related to the EMEA business sold on November 1, 2023 that were classified as held for sale as of December 31, 2022.

Included in accounts payable at December 31, 2023 and 2022 were $274 million and $265 million, respectively, associated with capital expenditures.
v3.24.0.1
Repurchases of Lumen Common Stock
12 Months Ended
Dec. 31, 2023
Equity [Abstract]  
Repurchases of Lumen Common Stock Repurchases of Lumen Common Stock
During the fourth quarter of 2022, our Board of Directors authorized a two-year program to repurchase up to an aggregate of $1.5 billion of our outstanding common stock. During the year ended December 31, 2023, we did not repurchase any shares of our outstanding common stock under this program. During the year ended December 31, 2022, we repurchased under this program 33 million shares of our outstanding common stock in the open market for an aggregate market price of $200 million, or an average purchase price of $6.07 per share. All repurchased common stock has been retired. As a result, common stock and additional paid-in capital were reduced as of December 31, 2022 by $33 million and $167 million, respectively.

On August 3, 2021, our Board of Directors authorized a 24-month program to repurchase up to an aggregate of $1.0 billion of our outstanding common stock. During the year ended December 31, 2021, we repurchased under this program 80.9 million shares of our outstanding common stock in the open market for an aggregate market price of $1.0 billion, or an average purchase price of $12.36 per share, thereby fully exhausting the program. All repurchased common stock has been retired. As a result, common stock and additional paid-in capital were reduced as of December 31, 2021 by $81 million and $919 million, respectively.

Any repurchases made in 2024 or thereafter will be subject to a non-deductible 1% excise tax on the fair market value of the stock under the Inflation Reduction Act of 2022.
Dividends
On November 2, 2022, we announced that our Board had terminated our quarterly cash dividend program; as a result no dividends were declared and paid in 2023.

Our Board of Directors declared the following dividends payable in 2022:
Date DeclaredRecord DateDividend
Per Share
Total AmountPayment Date
   (in millions) 
August 18, 20228/30/2022$0.25 $253 9/9/2022
May 19, 20225/31/20220.25 253 6/10/2022
February 24, 20223/8/20220.25 253 3/18/2022
The declaration of dividends is solely at the discretion of our Board of Directors.
v3.24.0.1
Accumulated Other Comprehensive Loss
12 Months Ended
Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss
Information Relating to 2023

The table below summarizes changes in accumulated other comprehensive loss recorded on our consolidated balance sheet by component for the year ended December 31, 2023:
Pension PlansPost-Retirement
Benefit Plans
Foreign Currency
Translation
Adjustment
and Other
Total
 (Dollars in millions)
Balance at December 31, 2022$(985)308 (422)(1,099)
Other comprehensive loss before reclassifications(110)(11)(1)(122)
Amounts reclassified from accumulated other comprehensive loss50 (21)382 411 
Net current-period other comprehensive (loss) income(60)(32)381 289 
Balance at December 31, 2023$(1,045)276 (41)(810)
The table below presents further information about our reclassifications out of accumulated other comprehensive loss by component for the year ended December 31, 2023:
Year Ended December 31, 2023(Decrease) Increase
in Net Loss
Affected Line Item in Consolidated Statement of
Operations
(Dollars in millions) 
Amortization of pension & post-retirement plans (1)
  
Net actuarial loss$82Other (expense) income, net
Prior service cost(15)Other (expense) income, net
Total before tax67  
Income tax benefit(16)Income tax expense
Net of tax$51  
Year Ended December 31, 2023
Reclassification out of Accumulated Other Comprehensive Loss
Affected line item in Consolidated Balance Sheets and Consolidated Statement of Operations
Reclassification of realized loss on foreign currency translation to valuation allowance within assets held for sale(2)
$389 
Assets held for sale
Reclassification of realized loss on foreign currency translation to loss on sale of business(3)
(7)
Net loss (gain) on sale of businesses
Subtotal reclassification of realized loss on foreign currency
382 
Reclassification of net actuarial loss to valuation allowance within assets held for sale(2)
(24)
Assets held for sale
Reclassification of net actuarial gain to loss on sale of business(3)
Net loss (gain) on sale of businesses
Subtotal reclassification of net actuarial loss
(22)
Income tax benefit
Income tax expense
Net of tax$360 
________________________________________________________________________
(1)See Note 11—Employee Benefits for additional information on our net periodic benefit (expense) income related to our pension and post-retirement plans.
(2)Recognized in net income through net loss (gain) on sale of business for the year ended December 31, 2022 and included in our valuation allowance in assets held for sale as of December 31, 2022.
(3)(Decrease) increase to net loss for the year ended December 31, 2023.
Information Relating to 2022

The table below summarizes changes in accumulated other comprehensive loss recorded on our consolidated balance sheet by component for the year ended December 31, 2022:
Pension PlansPost-Retirement
Benefit Plans
Foreign Currency
Translation
Adjustment
and Other
Interest Rate SwapTotal
 (Dollars in millions)
Balance at December 31, 2021$(1,577)(164)(400)(17)(2,158)
Other comprehensive income (loss) before reclassifications98 473 (134)— 437 
Amounts reclassified from accumulated other comprehensive loss494 (1)112 17 622 
Net current-period other comprehensive income (loss)592 472 (22)17 1,059 
Balance at December 31, 2022$(985)308 (422)— (1,099)

The table below presents further information about our reclassifications out of accumulated other comprehensive loss by component for the year ended December 31, 2022:
Year Ended December 31, 2022(Decrease) Increase
in Net Loss
Affected Line Item in Consolidated Statement of
Operations
 (Dollars in millions) 
Interest rate swap$22 Interest expense
Income tax benefit(5)Income tax expense
Net of tax$17 
Amortization of pension & post-retirement plans (1)
Net actuarial loss$121 Other (expense) income, net
Settlement charge(2)Other (expense) income, net
Reclassification of net actuarial loss and prior service credit to gain on the sale of business
539 Net loss (gain) on sale of businesses
Total before tax658  
Income tax benefit(165)Income tax expense
Net of tax$493  
Reclassification of realized loss on foreign currency translation to loss (gain) on sale of businesses
$112 Net loss (gain) on sale of businesses
Income tax benefit— Income tax expense
Net of tax$112 
________________________________________________________________________
(1)See Note 11—Employee Benefits for additional information on our net periodic benefit (expense) income related to our pension and post-retirement plans.
v3.24.0.1
Labor Union Contracts
12 Months Ended
Dec. 31, 2023
Risks and Uncertainties [Abstract]  
Labor Union Contracts Labor Union Contracts
As of December 31, 2023, approximately 21% of our employees were represented by the Communications Workers of America ("CWA") or the International Brotherhood of Electrical Workers ("IBEW"). None of our collective bargaining agreements were in expired status as of December 31, 2023. Approximately 2% of our represented employees are subject to collective bargaining agreements that are scheduled to expire over the 12 month period ending December 31, 2024.
v3.24.0.1
Dividends
12 Months Ended
Dec. 31, 2023
Dividends, Common Stock [Abstract]  
Dividends Repurchases of Lumen Common Stock
During the fourth quarter of 2022, our Board of Directors authorized a two-year program to repurchase up to an aggregate of $1.5 billion of our outstanding common stock. During the year ended December 31, 2023, we did not repurchase any shares of our outstanding common stock under this program. During the year ended December 31, 2022, we repurchased under this program 33 million shares of our outstanding common stock in the open market for an aggregate market price of $200 million, or an average purchase price of $6.07 per share. All repurchased common stock has been retired. As a result, common stock and additional paid-in capital were reduced as of December 31, 2022 by $33 million and $167 million, respectively.

On August 3, 2021, our Board of Directors authorized a 24-month program to repurchase up to an aggregate of $1.0 billion of our outstanding common stock. During the year ended December 31, 2021, we repurchased under this program 80.9 million shares of our outstanding common stock in the open market for an aggregate market price of $1.0 billion, or an average purchase price of $12.36 per share, thereby fully exhausting the program. All repurchased common stock has been retired. As a result, common stock and additional paid-in capital were reduced as of December 31, 2021 by $81 million and $919 million, respectively.

Any repurchases made in 2024 or thereafter will be subject to a non-deductible 1% excise tax on the fair market value of the stock under the Inflation Reduction Act of 2022.
Dividends
On November 2, 2022, we announced that our Board had terminated our quarterly cash dividend program; as a result no dividends were declared and paid in 2023.

Our Board of Directors declared the following dividends payable in 2022:
Date DeclaredRecord DateDividend
Per Share
Total AmountPayment Date
   (in millions) 
August 18, 20228/30/2022$0.25 $253 9/9/2022
May 19, 20225/31/20220.25 253 6/10/2022
February 24, 20223/8/20220.25 253 3/18/2022
The declaration of dividends is solely at the discretion of our Board of Directors.
v3.24.0.1
Subsequent Events
12 Months Ended
Dec. 31, 2023
Subsequent Events [Abstract]  
Subsequent Events Subsequent Events
Transaction Support Agreement

On January 22, 2024, the Company, Level 3, Qwest and a group of creditors holding a majority of our consolidated debt (the "TSA Parties") amended and restated the transaction support agreement that we originally entered into with a subset of the TSA Parties on October 31, 2023 (as amended and restated, the “Transaction Support Agreement”).

The Transaction Support Agreement defines the parties’ commitments to effect a series of transactions (the “TSA Transactions”) set forth in the term sheet attached thereto (the “Term Sheet”). Among other things and subject to the terms and conditions set forth therein, the Transaction Support Agreement, including the Term Sheet, contemplates:

the incurrence by Level 3 of $1.325 billion in new money long term senior secured first lien indebtedness, which indebtedness will be backstopped by certain of the consenting lenders;

a new revolving credit facility at Lumen in an amount expected to be approximately $1 billion;

the extension of maturities, covenant modifications and rate increases of certain secured and unsecured indebtedness at the Company and Level 3 through a series of exchanges and other debt transactions with certain consenting lenders as set forth in the Term Sheet; and

the repayment of certain indebtedness of the Company and Qwest.

The outside date for completion of the TSA Transactions under the Transaction Support Agreement is February 29, 2024, which the Company may unilaterally extend at its discretion to March 31, 2024. The Company expects to consummate the TSA Transactions in the first quarter of 2024, subject to the satisfaction of remaining closing conditions.

Following consummation of the TSA Transactions, the Company may assess potential follow-on transactions with respect to non-participating creditors.

Additional information about the Transaction Support Agreement and the TSA Transactions is available in our Current Report on Form 8-K filed with the Securities and Exchange Commission on January 25, 2024, and Exhibit 10.16 to this annual report.

Tax Refund

During the year ended December 31, 2023 we requested a U.S. Federal income tax refund of approximately $900 million. We applied approximately $200 million of that refund to pay our 2023 estimated taxes and, in January 2024, we received a cash refund of approximately $729 million, including interest.
v3.24.0.1
Background and Summary of Significant Accounting Policies (Policies)
12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]  
General
General

We are a facilities-based technology and communications company that provides a broad array of integrated products and services to our domestic and global business customers and our domestic mass markets customers. We operate one of the world’s most interconnected networks. Our platform empowers our customers to swiftly adjust digital programs to meet immediate demands, create efficiencies, accelerate market access and reduce costs, which allows our customers to rapidly evolve their IT programs to address dynamic changes. Our specific products and services are detailed in Note 4—Revenue Recognition.
Basis of Presentation
Basis of Presentation

The accompanying consolidated financial statements include our accounts and the accounts of our subsidiaries in which we have a controlling interest. Intercompany amounts and transactions with our consolidated subsidiaries have been eliminated.

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 (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.
Reclassification We reclassified certain prior period amounts to conform to the current period presentation, including the recategorization of our Business revenue by product category and sales channel in our segment reporting for 2022 and 2021.
Operating Expenses
Operating Expenses

Our current definitions of operating expenses are as follows:

Cost of services and products (exclusive of depreciation and amortization) are expenses incurred in providing products and services to our customers. These expenses include: employee-related expenses directly attributable to operating and maintaining our network (such as salaries, wages, benefits and professional fees); facilities expenses (which include third-party telecommunications expenses we incur for using other carriers' networks to provide services to our customers); rents and utilities expenses; equipment sales expenses (such as data integration and modem expenses); and other expenses directly related to our operations; and

Selling, general and administrative expenses are corporate overhead and other operating expenses. These expenses include: employee-related expenses (such as salaries, wages, internal commissions, benefits and professional fees) directly attributable to selling products or services and employee-related expenses for administrative functions; marketing and advertising; property and other operating taxes and fees; external commissions; litigation expenses associated with general matters; bad debt expense; and other selling, general and administrative expenses.

These expense classifications may not be comparable to those of other companies.
Use of Estimates
Use of Estimates

Our consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles. These accounting principles require us to make certain estimates, judgments and assumptions. We believe that the estimates, judgments and assumptions we make when accounting for specific items and matters are reasonable, based on information available at the time they are made. These estimates, judgments and assumptions can materially affect the reported amounts of assets, liabilities and components of stockholders' equity as of the dates of the consolidated balance sheets, as well as the reported amounts of revenue, expenses and components of cash flows during the periods presented in our other consolidated financial statements. We also make estimates in our assessments of potential losses in relation to threatened or pending tax and legal matters. See Note 16—Income Taxes and Note 18—Commitments, Contingencies and Other Items for additional information.

For matters not related to income taxes, if a loss is considered probable and the amount can be reasonably estimated, we recognize an expense for the estimated loss. If we have the potential to recover a portion of the estimated loss from a third party, we make a separate assessment of recoverability and reduce the estimated loss if recovery is also deemed probable.

For matters related to income taxes, if we determine the impact of an uncertain tax position is more likely than not to be sustained upon audit by the relevant taxing authority, then we recognize a benefit for the largest amount that is more likely than not to be sustained. We do not recognize any portion of an uncertain tax position if the position has less than a 50% likelihood of being sustained. We recognize interest on the amount of unrecognized benefit from uncertain tax positions.

For all of these and other matters, actual results could differ materially from our estimates.
Assets Held for Sale
Assets Held for Sale
We classify assets and related liabilities as held for sale when: (i) management has committed to a plan to sell the assets, (ii) the net assets are available for immediate sale, (iii) there is an active program to locate a buyer and (iv) the sale and transfer of the net assets is probable within one year. Assets and liabilities held for sale are presented separately on our consolidated balance sheets with a valuation allowance, if necessary, to recognize the net carrying amount at the lower of cost or fair value, less costs to sell. Depreciation of property, plant and equipment and amortization of finite-lived intangible assets and right-of-use assets are not recorded while these assets are classified as held for sale. For each period that assets are classified as being held for sale, they are tested for recoverability. Unless otherwise specified, the amounts and information presented in the notes do not include assets and liabilities that were classified as held for sale as of December 31, 2023 and December 31, 2022.
Revenue Recognition
Revenue Recognition

We earn most of our consolidated revenue from contracts with customers, primarily through the provision of communications and other services. Revenue from contracts with customers is accounted for under Accounting Standards Codification ("ASC") 606. We also earn revenue from leasing arrangements (primarily fiber capacity and colocation agreements) and governmental subsidy payments, which are not accounted for under ASC 606.

Revenue is recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to receive in exchange for those goods or services. Revenue is recognized based on the following five-step model:

Identification of the contract with a customer;

Identification of the performance obligations in the contract;

Determination of the transaction price;

Allocation of the transaction price to the performance obligations in the contract; and

Recognition of revenue when, or as, we satisfy a performance obligation.

We provide an array of communications services to business and residential customers, including local voice, VPN, Ethernet, data, broadband, private line (including special access), network access, transport, voice, information technology, video and other ancillary services. We provide these services to a wide range of businesses, including global, enterprise, wholesale, government, and small and medium business customers. Certain contracts also include the sale of equipment, which is not significant to our business.

We recognize revenue for services when we provide the applicable service or when control of a product is transferred. Recognition of certain payments received in advance of services being provided is deferred. These advance payments may include certain activation and certain installation charges. If the activation and installation charges are not separate performance obligations, we recognize them as revenue over the actual or expected contract term using historical experience, which typically ranges from one to five 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.

For access services, we generally bill fixed monthly charges one month in advance to customers and recognize revenue as service is provided over the contract term in alignment with the customer's receipt of service. For usage and other ancillary services, we generally bill in arrears and recognize revenue as usage or delivery occurs. In most cases, the amount invoiced for our service offerings constitutes the price that would be billed on a standalone basis.

In certain cases, customers may be permitted to modify their contracts. We evaluate the change in scope or price to identify whether the modification should be treated as a separate contract, as a termination of the existing contract and creation of a new contract, or as a change to the existing contract.

Customer contracts are evaluated to determine whether the performance obligations are separable. If the performance obligations are deemed separable and separate earnings processes exist, the total transaction price that we expect to receive with the customer is allocated to each performance obligation based on its relative standalone selling price. The revenue associated with each performance obligation is then recognized as earned.

We periodically sell transmission capacity on our network. These transactions are generally 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. In most cases, we account for the cash consideration received on transfers of transmission capacity as ASC 606 revenue which is adjusted for the time value of money and is recognized ratably over the term of the agreement. Cash consideration received on transfers of dark fiber is accounted for as non-ASC 606 lease revenue, which we also recognize ratably over the term of the agreement. We do not recognize revenue on any contemporaneous exchanges of our transmission capacity assets for other non-owned transmission 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 obligations associated with the transaction.

We have service level commitments pursuant to contracts with certain of our customers. To the extent that we determine that such service levels were not achieved or may not have been achieved, we estimate the amount of credits to be issued and record a corresponding reduction to revenue in the period that the service level commitment was not met or may not be met.

Customer payments are made based on billing schedules included in our customer contracts, which is typically on a monthly basis.

We defer (or capitalize) incremental contract acquisition and fulfillment costs and recognize (or amortize) such costs over the average contract life. Our deferred contract costs for our customers have average amortization periods of approximately 36 months for mass markets customers and 33 months for business customers. These deferred costs are periodically monitored to reflect any significant change in assumptions.
Advertising Costs
Advertising Costs
Costs related to advertising are expensed as incurred and recorded as selling, general and administrative expenses in our consolidated statements of operations.
Legal Costs
Legal Costs

In the normal course of our business, we incur costs to hire and retain external legal counsel to advise us on finance, regulatory, litigation and other matters. Subject to certain exceptions, we expense these costs as the related services are received.
Income Taxes
Income Taxes

We file a consolidated federal income tax return with our eligible subsidiaries. The provision for income taxes reflects taxes currently payable, tax consequences deferred to future periods and adjustments to our liabilities for uncertain tax positions. We record deferred income tax assets and liabilities reflecting future tax consequences attributable to tax NOLs, tax credit carryforwards and differences between the financial statement carrying value of assets and liabilities and the tax basis of those assets and liabilities. Deferred taxes are computed using enacted tax rates expected to apply in the year in which the differences are expected to affect taxable income. The effect on deferred income tax assets and liabilities of a change in tax rate is recognized in earnings in the period that includes the enactment date.
We establish valuation allowances when necessary to reduce deferred income tax assets to the amounts that we believe are more likely than not to be recovered. Each quarter we evaluate the need to retain or adjust each valuation allowance on our deferred tax assets.
Cash and Cash Equivalents
Cash and Cash Equivalents

Cash and cash equivalents include highly liquid investments that are readily convertible into cash and are not subject to significant risk from fluctuations in interest rates. As a result, the value at which cash and cash equivalents are reported in our consolidated financial statements approximates their fair value. In evaluating investments for classification as cash equivalents, we require that individual securities have original maturities of ninety days or less and that individual investment funds have dollar-weighted average maturities of ninety days or less. To preserve capital and maintain liquidity, we invest with financial institutions we deem to be of sound financial condition and in high quality and relatively risk-free investment products. Our cash investment policy limits the concentration of investments with specific financial institutions or among certain products and includes criteria related to credit worthiness of any particular financial institution.
Book overdrafts occur when we have issued checks but they have not yet been presented to our controlled disbursement bank accounts for payment. Disbursement bank accounts allow us to delay funding of issued checks until the checks are presented for payment. Until the issued checks are presented for payment, the book overdrafts are included in accounts payable on our consolidated balance sheets. This activity is included in the operating activities section in our consolidated statements of cash flows.
Restricted Cash
Restricted Cash

Restricted cash consists primarily of cash and investments that collateralize our outstanding letters of credit and certain performance and operating obligations. Restricted cash and securities are recorded as current or non-current assets in the consolidated balance sheets depending on the duration of the restriction and the purpose for which the restriction exists. Restricted securities are stated at cost which approximated their fair value as of December 31, 2023 and 2022.
Accounts Receivable and Allowance for Credit Losses
Accounts Receivable and Allowance for Credit Losses

Accounts receivable are recognized based upon the amount due from customers for the services provided or at cost for purchased and other receivables, less an allowance for credit losses. We use a loss rate method to estimate our allowance for credit losses. For more information on our methodology for estimating our allowance for credit losses, see Note 6—Credit Losses on Financial Instruments.

We generally consider our accounts past due if they are outstanding over 30 days. Our past due accounts are written off against our allowance for credit losses when collection is considered to be not probable. Any recoveries of accounts previously written off are generally recognized as a reduction in bad debt expense in the period received. The carrying value of accounts receivable net of the allowance for credit losses approximates fair value. Accounts receivable balances acquired in a business combination are recorded at fair value for all balances receivable at the acquisition date and at the invoiced amount for those amounts invoiced after the acquisition date.
Property, Plant and Equipment
Property, Plant and Equipment

We record property, plant and equipment acquired in connection with our acquisitions based on its estimated fair value as of its acquisition date plus the estimated value of any associated legally or contractually required retirement obligations. We record purchased and constructed property, plant and equipment at cost, plus the estimated value of any associated legally or contractually required retirement obligations. We depreciate the majority of our property, plant and equipment using the straight-line group method over the estimated useful lives of groups of assets, but depreciate certain of our assets using the straight-line method over the estimated useful lives of the specific asset. Under the straight-line group method, assets dedicated to providing telecommunications services (which comprise the majority of our property, plant and equipment) that have similar physical characteristics, use and expected useful lives are pooled for purposes of depreciation and tracking. We use the equal life group procedure to establish each pool's average remaining useful life. Generally, under the straight-line group method, when an asset is sold or retired in the course of normal business activities, the cost is deducted from property, plant and equipment and charged to accumulated depreciation without recognition of a gain or loss. A gain or loss is recognized in our consolidated statements of operations only if a disposal is unusual. Leasehold improvements are amortized over the shorter of the useful lives of the assets or the expected lease term. Expenditures for maintenance and repairs are expensed as incurred. During the construction phase of network and other internal-use capital projects, we capitalize related employee and interest costs. Property, plant and equipment supplies used internally are carried at average cost, except for significant individual items which are carried at actual cost.

We perform annual internal reviews to evaluate the reasonableness of the depreciable lives for our property, plant and equipment. Our reviews utilize models that take into account actual usage, physical wear and tear, replacement history, assumptions about technology evolution and, in certain instances, actuarially determined probabilities to estimate the remaining useful life of our asset base. Our remaining useful life assessments evaluate the possible loss in service value of assets that may precede the physical retirement. Assets shared among many customers may lose service value as those customers reduce their use of the asset. However, the asset is not retired until all customers no longer utilize the asset and we determine there is no alternative use for the asset.
We have asset retirement obligations associated with the legally or contractually required removal of a limited group of property, plant and equipment assets from leased properties and the disposal of certain hazardous materials present in our owned properties. When an asset retirement obligation is identified, usually in association with the acquisition of the asset, we record the fair value of the obligation as a liability. The fair value of the obligation is also capitalized as property, plant and equipment and then amortized over the estimated remaining useful life of the associated asset. Where the removal obligation is not legally binding, we expense the net cost to remove assets in the period in which the costs are actually incurred.

We review long-lived tangible assets for impairment whenever facts and circumstances indicate that the carrying amounts of the assets may not be recoverable. For assessment purposes, long-lived assets are grouped with other assets and liabilities at the lowest identifiable level for which we generate cash flows independently of other groups of assets and liabilities, absent a material change in operations. An impairment loss is recognized only if the carrying amount of the asset group is not recoverable and exceeds its estimated fair value. Recoverability of the asset group to be held and used is assessed by comparing the carrying amount of the asset group to the estimated undiscounted future net cash flows expected to be generated by the asset group. If the asset group's carrying value is not recoverable, we recognize an impairment charge for the amount by which the carrying amount of the asset group exceeds its estimated fair value.
Goodwill, Customer Relationships and Other Intangible Assets
Goodwill, Customer Relationships and Other Intangible Assets

We initially record intangible assets arising from business combinations, such as goodwill, customer relationships, capitalized software, trademarks and trade names, at estimated fair value. We amortize customer relationships primarily over an estimated life of 7 to 14 years, using the straight-line method, depending on the type of customer. Certain customer relationship intangible assets became fully amortized at the end of the first quarter 2021 using the sum-of-years-digits method, which we no longer use for any of our remaining intangible assets. We amortize capitalized software using the straight-line method primarily over estimated lives ranging up to 7 years. We amortize our other intangible assets using the straight-line method over an estimated life of 9 to 20 years. Other intangible assets not arising from business combinations are initially recorded at cost. Where there are no legal, regulatory, contractual or other factors that would reasonably limit the useful life of an intangible asset, we classify them as indefinite-lived intangible assets and such intangible assets are not amortized.

Internally used software, whether purchased or developed by us, is capitalized and amortized using the straight-line method over its estimated useful life. We have capitalized certain costs associated with software such as costs of employees devoted to software development and external direct costs for materials and services. Costs associated with software to be used for internal purposes are expensed until the point at which the project has reached the development stage. Subsequent additions, modifications or upgrades to internal-use software are capitalized only to the extent that they allow the software to perform a task it previously did not perform. Software maintenance, data conversion and training costs are expensed in the period in which they are incurred. We review the remaining economic lives of our capitalized software annually. Capitalized software is included in other intangible assets, net, in our consolidated balance sheets.

Our long-lived intangible assets, other than goodwill, with indefinite lives are assessed for impairment annually, or, under certain circumstances, more frequently, such as when events or changes in circumstances indicate there may be an impairment. These assets are carried at the estimated fair value at the time of acquisition and assets not acquired in acquisitions are recorded at historical cost. However, if their estimated fair value is less than the carrying amount, we recognize an impairment charge for the amount by which the carrying amount of these assets exceeds their estimated fair value.

We are required to assess our goodwill for impairment annually, or more frequently if an event occurs or circumstances change that indicates it is more likely than not the fair values of any of our reporting units were less than their carrying values. We are required to write-down the value of goodwill of our reporting units in periods in which the recorded carrying value of any such unit exceeds its fair value of equity. Our reporting units are not discrete legal entities with discrete full financial statements. Therefore, we assess the equity carrying value and future cash flows each time we perform a goodwill impairment assessment on a reporting unit. To do so, we assign our assets, liabilities and cash flows to reporting units using allocation methodologies which we believe are reasonable and consistent. This process entails various estimates, judgments and assumptions.
We are required to reassign goodwill to reporting units whenever reorganizations of our internal reporting structure changes the composition of our reporting units. Goodwill is reassigned to the reporting units using a relative fair value approach. When the fair value of a reporting unit is available, we allocate goodwill based on the relative fair value of the reporting units. When fair value is not available, we utilize an alternative allocation methodology that we believe represents a reasonable approximation of the fair value of the operations being reorganized.
Derivatives and Hedging
Derivatives and Hedging

From time to time we have used derivative instruments to hedge exposure to interest rate risks arising from fluctuation in interest rates. We account for derivative instruments in accordance with ASC 815, Derivatives and Hedging, which establishes accounting and reporting standards for derivative instruments. We do not use derivative financial instruments for speculative purposes.

Derivatives are recognized in the consolidated balance sheets at their fair values. When we become a party to a derivative instrument and intend to apply hedge accounting, we formally document the hedge relationship and the risk management objective for undertaking the hedge, which includes designating the instrument for financial reporting purposes as a fair value hedge, a cash flow hedge, or a net investment hedge.
As of December 31, 2023, we were not party to any swap agreements. All of our variable-to-fixed interest rate swap agreements in place at the beginning of 2022 expired during the first half of 2022. While we held these agreements, we evaluated the effectiveness as described in Note 15—Derivative Financial Instruments (designated as cash-flow hedges) qualitatively on a quarterly basis. We reflected the change in the fair value of the interest rate swaps in accumulated other comprehensive loss and subsequently reclassified into earnings in the period the hedged transaction affects earnings, by virtue of qualifying as effective cash flow hedges.
Pension and Post-Retirement Benefits
Pension and Post-Retirement Benefits
We recognize the funded status of our defined benefit and post-retirement plans as an asset or a liability on our consolidated balance sheets. Each year's actuarial gains or losses are a component of our other comprehensive income (loss), which is then included in our accumulated other comprehensive loss on our consolidated balance sheets. Pension and post-retirement benefit expenses are recognized over the period in which the employee renders service and becomes eligible to receive benefits. We make significant assumptions (including the discount rate, expected rate of return on plan assets, mortality and health care trend rates) in computing the pension and post-retirement benefits expense and obligations.
Foreign Currency
Foreign Currency

Local currencies of our foreign subsidiaries are the functional currencies for financial reporting purposes except for certain foreign subsidiaries, primarily in Latin America prior to the August 1, 2022 sale of our Latin American business. For operations outside the United States that have functional currencies other than the U.S. dollar, assets and liabilities are translated to U.S. dollars at period-end exchange rates, and revenue, expenses and cash flows are translated using average monthly exchange rates. Prior to the November 1, 2023 sale of our EMEA business and the August 1, 2022 sale of our Latin American business, a significant portion of our non-United States subsidiaries used the British pound, the Euro, or the Brazilian Real, as their functional currency, each of which experienced significant fluctuations against the U.S. dollar during the years ended December 31, 2023, 2022 and 2021. We recognize foreign currency translation gains and losses as a component of accumulated other comprehensive loss in stockholders' equity in our consolidated balance sheet and in our consolidated statements of comprehensive (loss) income in accordance with accounting guidance for foreign currency translation. Prior to the announcement of our divestitures as discussed in Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses, we considered the majority of our investments in our foreign subsidiaries to be long-term in nature. Our foreign currency transaction gains (losses), including where transactions with our non-United States subsidiaries are not considered to be long-term in nature, are included within other (expense) income, net on our consolidated statements of operations.
Common Stock, Preferred Stock, Section 382 Rights Plan and Dividends
Common Stock

As of December 31, 2023, we had 11 million shares authorized for future issuance under our equity incentive plans.

Preferred Stock

Holders of outstanding Lumen Technologies preferred stock are entitled to receive cumulative dividends, receive preferential distributions equal to $25 per share plus unpaid dividends upon Lumen's liquidation and vote as a single class with the holders of common stock.

Section 382 Rights Plan

We maintain a Section 382 Rights Plan to protect our U.S. federal net operating loss carryforwards from certain Internal Revenue Code Section 382 limitations. Under the plan, one preferred stock purchase right was distributed for each share of our outstanding common stock as of the close of business on February 25, 2019, and those rights currently trade in tandem with the common stock until they expire or detach under the plan. This plan was designed to deter trading that would result in a change of control (as defined in Code Section 382), and therefore protect our ability to use our historical federal NOLs in the future. The plan is scheduled to lapse in late 2026.
Dividends

The declaration and payment of dividends is at the discretion of our Board of Directors. On November 2, 2022, we announced that our Board had terminated our quarterly cash dividend program.
Recently Adopted and Recently Issued Accounting Pronouncements
Recently Adopted Accounting Pronouncements

Supplier Finance Programs

On January 1, 2023, we adopted Accounting Standards Update ("ASU") 2022-04, “Liabilities-Supplier Finance Program (Subtopic 405-50): Disclosure of Supplier Finance Program Obligations” (“ASU 2022-04”).These amendments require that a company that uses a supplier finance program in connection with the purchase of goods or services disclose sufficient information about the program to allow a user of financial statements to understand the program’s nature, program activity during the period, changes from period to period and the potential magnitude of program transactions. The adoption of ASU 2022-04 did not have a material impact to our consolidated financial statements.

Credit Losses

On January 1, 2023, we adopted ASU 2022-02, “Financial Instruments-Credit Losses (Topic 326): Troubled Debt Restructurings (“TDR”) and Vintage Disclosures” (“ASU 2022-02”). The ASU eliminates the TDR recognition and measurement guidance, enhances existing disclosure requirements and introduces new requirements related to certain modifications of receivables made to borrowers experiencing financial difficulty. The adoption of ASU 2022-02 did not have a material impact to our consolidated financial statements.

Government Assistance

On January 1, 2022, we adopted ASU 2021-10 "Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance” (“ASU 2021-10”) ASU 2021-10. This ASU requires business entities to disclose information about certain types of government assistance they receive. Please refer to Note 4—Revenue Recognition for more information.
Leases

On January 1, 2022, we adopted ASU 2021-05, “Leases (Topic 842): Lessors—Certain Leases with Variable Lease Payments” (“ASU 2021-05”). This ASU (i) amends the lease classification requirements for lessors to align them with practice under ASC Topic 840, (ii) provides criteria for lessors to classify and account for a lease with variable lease payments that do not depend on a reference index or a rate as an operating lease; and (iii) provides guidance with respect to net investments by lessors under operating leases and other related topics. The adoption of ASU 2021-05 did not have a material impact to our consolidated financial statements.

Debt

On January 1, 2021, we adopted ASU 2020-09, "Debt (Topic 470) Amendments to SEC Paragraphs Pursuant to SEC Release No. 33-10762" ("ASU 2020-09"). This ASU amends and supersedes various SEC guidance to reflect SEC Release No. 33-10762, which includes amendments to the financial disclosure requirements applicable to registered debt offerings that include credit enhancements, such as subsidiary guarantees. The adoption of ASU 2020-09 did not have a material impact to our consolidated financial statements.

Investments

On January 1, 2021, we adopted ASU 2020-01, "Investments - Equity Securities (Topic 321), Investments - Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) - Clarifying the Interactions between Topic 321, Topic 323, and Topic 815)" ("ASU 2020-01"). This ASU, among other things, clarifies that a company should consider observable transactions that require a company to either apply or discontinue the equity method of accounting under Topic 323, Investments - Equity Method and Joint Ventures, for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. As of December 31, 2023, we determined there was no application or discontinuation of the equity method during the reporting periods covered in this report. The adoption of ASU 2020-01 did not have an impact to our consolidated financial statements.

Income Taxes

On January 1, 2021, we adopted ASU 2019-12, "Simplifying the Accounting for Income Taxes (Topic 740)" ("ASU 2019-12"). This ASU removes certain exceptions for investments, intra-period allocations and interim calculations, and adds guidance to reduce complexity in accounting for income taxes. The adoption of ASU 2019-12 did not have a material impact to our consolidated financial statements.

Recently Issued Accounting Pronouncements

In December 2023, the Financial Accounting Standards Board (“FASB”) issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”). This ASU requires that public business entities must annually “(1) disclose specific categories in the rate reconciliation and (2) provide additional information for reconciling items that meet a quantitative threshold (if the effect of those reconciling items is equal to or greater than 5 percent of the amount computed by multiplying pretax income or loss by the applicable statutory income tax rate).” ASU 2023-09 will become effective for us in the annual period of fiscal 2025 and early adoption is permitted. We have chosen not to early adopt this ASU.

In December 2023, the FASB issued ASU 2023-08, “Intangibles—Goodwill and Other—Crypto Assets (Subtopic 350-60): Accounting for and Disclosure of Crypto Assets” (“ASU 2023-08”). This ASU is intended to improve the accounting for certain crypto assets by requiring an entity to measure those crypto assets at fair value each reporting period with changes in fair value recognized in net income. The amendments also improve the information provided to investors about an entity’s crypto asset holdings by requiring disclosure about significant holdings, contractual sale restrictions, and changes during the reporting period. This ASU will become effective for us in the first quarter of fiscal 2025 and early adoption is permitted. As of December 31, 2023, we do not hold crypto assets and do not expect ASU 2023-08 will have any impact to our consolidated financial statements.
In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures” (“ASU 2023-07”). This ASU is intended to improve reportable segment disclosure requirements primarily through enhanced disclosures about significant segment expenses. This ASU will become effective for us in annual period fiscal 2024 and early adoption is permitted. As of December 31, 2023, we are evaluating its impact on our consolidated financial statements.

In October 2023, the FASB issued ASU 2023-06, “Disclosure Improvements: Codification Amendments in Response to the SEC’s Disclosure Update and Simplification Initiative” (“ASU 2023-06”). This ASU incorporates certain SEC disclosure requirements into the FASB Accounting Standards Codification (“Codification”). The amendments in the ASU are expected to clarify or improve disclosure and presentation requirements of a variety of Codification Topics, allow users to more easily compare entities subject to the SEC’s existing disclosures with those entities that were not previously subject to the requirements, and align the requirements in the Codification with the SEC’s regulations. ASU 2023-06 will become effective for each amendment on the effective date of the SEC's corresponding disclosure rule changes. As of December 31, 2023, we do not expect ASU 2023-06 will have any impact to our consolidated financial statements.

In August 2023, the FASB issued ASU 2023-05, “Business Combinations – Joint Venture Formations (Subtopic 805-60): Recognition and initial Measurement” (“ASU 2023-05”). This ASU applies to the formation of entities that meet the definition of a joint venture (or a corporate joint venture). The amendments in the ASU require that a joint venture apply a new basis of accounting upon formation. ASU 2023-05 will become effective for us in the first quarter of fiscal 2025 and early adoption is permitted. As of December 31, 2023, we do not expect ASU 2023-05 will have any impact to our consolidated financial statements.

In August 2023, the FASB issued ASU 2023-04, “Liabilities (Topic 405): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 121” (“ASU 2023-04”). This ASU amends and adds various SEC paragraphs to the FASB Codification to reflect guidance regarding the accounting for obligations to safeguard crypto assets an entity holds for platform users. This ASU does not provide any new guidance. ASU 2023-04 became effective for us once the addition to the FASB Codification was made available. As of December 31, 2023, we do not expect ASU 2023-04 will have any impact to our consolidated financial statements.

In July 2023, the FASB issued ASU 2023-03, “Presentation of Financial Statements (Topic 205), Income Statement—Reporting Comprehensive Income (Topic 220), Distinguishing Liabilities from Equity (Topic 480), Equity (Topic 505), and Compensation—Stock Compensation (Topic 718): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 120, SEC Staff Announcement at the March 24, 2022 EITF Meeting, and Staff Accounting Bulletin Topic 6.B, Accounting Series Release 280—General Revision of Regulation S-X: Income or Loss Applicable to Common Stock” (“ASU 2023-03”). This ASU amends or supersedes various SEC paragraphs within the applicable codification to conform to past SEC staff announcements. This ASU does not provide any new guidance. ASU 2023-03 became effective for us once the addition to the FASB Codification was made available. As of December 31, 2023, we do not expect ASU 2023-03 will have any impact to our consolidated financial statements.

In March 2023, the FASB issued ASU 2023-02, “Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method” (“ASU 2023-02”). These amendments allow reporting entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. ASU 2023-02 will become effective for us in the first quarter of fiscal 2024 and early adoption is permitted. As of December 31, 2023, we do not expect ASU 2023-02 will have any impact to our consolidated financial statements.

In March 2023, the FASB issued ASU 2023-01, “Leases (Topic 842): Common Control Arrangements” (“ASU 2023-01”). These amendments require all entities to amortize leasehold improvements associated with common control leases over the useful life to the common control group. ASU 2023-01 will become effective for us in the first quarter of fiscal 2024 and early adoption is permitted. As of December 31, 2023, we do not expect ASU 2023-01 will have any impact to our consolidated financial statements.
In December 2022, the Financial Accounting Standards Board (“FASB”) issued ASU 2022-06, “Reference Rate Reform (Topic 848) – Deferral of the Sunset Date of Topic 848" ("ASU 2022-06"). These amendments extend the period of time preparers can utilize the reference rate reform relief guidance in Topic 848, which defers the sunset date from December 31, 2022, to December 31, 2024, after which entities will no longer be permitted to apply the relief in Topic 848. ASU 2022-06 is effective upon issuance. Based on our review of our key material contracts through December 31, 2023, ASU 2022-06 does not have a material impact to our consolidated financial statements.

In June 2022, the FASB issued ASU 2022-03, “Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions” (“ASU 2022-03”). These amendments clarify that a contractual restriction on the sales of an investment in an equity security is not considered part of the unit of account of the equity security and, therefore, is not considered in measuring its fair value. ASU 2022-03 will become effective for us in the first quarter of fiscal 2024 and early adoption is permitted. As of December 31, 2023, we do not expect ASU 2022-03 will have any impact to our consolidated financial statements.

In January 2021, the FASB issued ASU 2021-01, "Reference Rate Reform (Topic 848): Scope" ("ASU 2021-01"), which clarifies that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. ASU 2021-01 also amends the expedients and exceptions in Topic 848 to capture the incremental consequences of the scope clarification and to tailor the existing guidance to derivative instruments affected by the discounting transition. These amendments may be applied prospectively to contract modifications made and hedging relationships entered into or evaluated on or before December 31, 2022. ASU 2021-01 provides optional expedients for a limited time to ease the potential burden in accounting for reference rate reform. Based on our review of our key material contracts through December 31, 2023, ASU 2021-01 will not have a material impact to our consolidated financial statements.
v3.24.0.1
Goodwill, Customer Relationships and Other Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of goodwill and other intangible assets
Goodwill, customer relationships and other intangible assets consisted of the following:
As of December 31,
2023
2022(1)
 (Dollars in millions)
Goodwill(2)
$1,964 12,657 
Indefinite-lived intangible assets$
Other intangible assets subject to amortization: 
Customer relationships(3), less accumulated amortization of $4,248 and $3,606
3,811 4,574 
Capitalized software, less accumulated amortization of $4,045(4) and $3,895
1,564 1,482 
Trade names, patents and other, less accumulated amortization of $72(4) and $188
86 101 
Total other intangible assets, net$5,470 6,166 
______________________________________________________________________ 
(1)These values exclude assets classified as held for sale.
(2)We recorded cumulative non-cash, non-tax-deductible goodwill impairment charges of $10.7 billion during the year ended December 31, 2023.
(3)For the year ended December 31, 2023, customer relationships decreased $121 million in conjunction with the sale of select CDN customer contracts in the fourth quarter of 2023 that resulted in a net loss of $73 million included in selling, general and administrative expenses in our consolidated statements of operations.
(4)Certain capitalized software with a gross carrying value of $183 million and trade names with a gross carrying value of $130 million became fully amortized during 2022 and were retired during the first quarter of 2023.
Schedule of goodwill attributable to segments
The following table shows the rollforward of goodwill assigned to our reportable segments from December 31, 2021 through December 31, 2023.

 BusinessMass MarketsTotal
 (Dollars in millions)
As of December 31, 2021$11,235 4,751 15,986 
Effect of foreign currency exchange rate change and other$(58)— (58)
Impairment$(3,271)— (3,271)
As of December 31, 2022(1)
$7,906 4,751 12,657 
Impairment(7,906)(2,787)(10,693)
As of December 31, 2023(1)
$— 1,964 1,964 
______________________________________________________________________
(1)Goodwill at December 31, 2023, December 31, 2022 and December 31, 2021 is net of accumulated impairment losses of $21.7 billion, $11.0 billion and $7.7 billion, respectively.
Schedule of estimated amortization expense for intangible assets
We estimate that total amortization expense for finite-lived intangible assets for the years ending December 31, 2024 through 2028 will be as provided in the table below.

 (Dollars in millions)
2024$922 
2025847 
2026803 
2027722 
2028657 
Schedule of cost of equity
As of October 31, 2022
Reporting Units
Mass MarketsNA BusinessEMEAAPAC
Weighted average cost of capital9.4 %9.4 %9.8 %11.3 %
After-tax cost of debt4.7 %4.7 %5.1 %6.3 %
Cost of equity14.0 %14.0 %14.4 %16.2 %
v3.24.0.1
Revenue Recognition (Tables)
12 Months Ended
Dec. 31, 2023
Revenue from Contract with Customer [Abstract]  
Schedule of revenue from external customers by products and services
The following tables provide total revenue by segment, sales channel and product category. They also provide the amount of revenue that is not subject to ASC 606, "Revenue from Contracts with Customers" ("ASC 606"), but is instead governed by other accounting standards. The amounts in the tables below include revenue for the Latin American, ILEC and EMEA businesses prior to their sales on August 1, 2022, October 3, 2022 and November 1, 2023, respectively:
Year Ended December 31, 2023
Total Revenue
Adjustments for Non-ASC 606 Revenue (1)
Total Revenue from Contracts with Customers
 (Dollars in millions)
Business Segment by Sales Channel and Product Category
Large Enterprise
Grow$2,167 (294)1,873 
Nurture1,450 — 1,450 
Harvest760 — 760 
Other239 (5)234 
Total Large Enterprise Revenue4,616 (299)4,317 
Mid-Market Enterprise
Grow803 (28)775 
Nurture797 — 797 
Harvest378 (4)374 
Other33 (4)29 
Total Mid-Market Enterprise Revenue2,011 (36)1,975 
Public Sector
Grow469 (81)388 
Nurture398 — 398 
Harvest383 (1)382 
Other533 — 533 
Total Public Sector Revenue1,783 (82)1,701 
Wholesale
Grow1,030 (251)779 
Nurture820 (25)795 
Harvest1,264 (165)1,099 
Other11 — 11 
Total Wholesale Revenue3,125 (441)2,684 
Business Segment by Product Category
Grow4,469 (654)3,815 
Nurture3,465 (25)3,440 
Harvest2,785 (170)2,615 
Other816 (9)807 
Total Business Segment Revenue11,535 (858)10,677 
Mass Markets Segment by Product Category
Fiber Broadband636 (16)620 
Other Broadband1,394 (126)1,268 
Voice and Other992 (36)956 
Total Mass Markets Revenue3,022 (178)2,844 
Total Revenue$14,557 (1,036)13,521 
Timing of revenue
Goods and services transferred at a point in time$178 
Services performed over time13,343 
Total revenue from contracts with customers$13,521 
Year Ended December 31, 2022
Total Revenue
Adjustments for Non-ASC 606 Revenue (1)
Total Revenue from Contracts with Customers
 (Dollars in millions)
Business Segment by Sales Channel and Product Category
Large Enterprise
Grow$2,415 (352)2,063 
Nurture1,685 — 1,685 
Harvest1,022 — 1,022 
Other255 (8)247 
Total Large Enterprise Revenue5,377 (360)5,017 
Mid-Market Enterprise
Grow757 (32)725 
Nurture915 — 915 
Harvest510 (7)503 
Other30 (1)29 
Total Mid-Market Enterprise Revenue2,212 (40)2,172 
Public Sector
Grow444 (103)341 
Nurture490 — 490 
Harvest468 (4)464 
Other459 (2)457 
Total Public Sector Revenue1,861 (109)1,752 
Wholesale
Grow979 (271)708 
Nurture1,004 (23)981 
Harvest1,557 (215)1,342 
Other51 — 51 
Total Wholesale Revenue3,591 (509)3,082 
Business Segment by Product Category
Grow4,595 (758)3,837 
Nurture4,094 (23)4,071 
Harvest3,557 (226)3,331 
Other795 (11)784 
Total Business Segment Revenue13,041 (1,018)12,023 
Mass Markets Segment by Product Category
Fiber Broadband604 (18)586 
Other Broadband2,164 (200)1,964 
Voice and Other1,669 (134)1,535 
Total Mass Markets Revenue4,437 (352)4,085 
Total Revenue$17,478 (1,370)16,108 
Timing of revenue
Goods and services transferred at a point in time$154 
Services performed over time15,954 
Total revenue from contracts with customers$16,108 
Year Ended December 31, 2021
Total Revenue
Adjustments for Non-ASC 606 Revenue (1)
Total Revenue from Contracts with Customers
 (Dollars in millions)
Business Segment by Sales Channel and Product Category
Large Enterprise
Grow$2,552 (427)2,125 
Nurture1,906 — 1,906 
Harvest1,205 (2)1,203 
Other255 (5)250 
Total Large Enterprise Revenue5,918 (434)5,484 
Mid-Market Enterprise
Grow724 (29)695 
Nurture1,026 — 1,026 
Harvest613 (7)606 
Other35 (4)31 
Total Mid-Market Enterprise Revenue2,398 (40)2,358 
Public Sector
Grow481 (84)397 
Nurture528 — 528 
Harvest569 (3)566 
Other533 (2)531 
Total Public Sector Revenue2,111 (89)2,022 
Wholesale
Grow930 (279)651 
Nurture1,080 (25)1,055 
Harvest1,682 (228)1,454 
Other— — — 
Total Wholesale Revenue3,692 (532)3,160 
Business Segment by Product Category
Grow4,687 (819)3,868 
Nurture4,540 (25)4,515 
Harvest4,069 (240)3,829 
Other823 (11)812 
Total Business Segment Revenue14,119 (1,095)13,024 
Mass Markets Segment by Product Category
Fiber Broadband524 — 524 
Other Broadband2,507 (227)2,280 
Voice and Other2,537 (570)1,967 
Total Mass Markets Revenue5,568 (797)4,771 
Total Revenue$19,687 (1,892)17,795 
Timing of revenue
Goods and services transferred at a point in time$138 
Services performed over time17,657 
Total revenue from contracts with customers$17,795 
______________________________________________________________________
(1)Includes regulatory revenue and lease revenue not within the scope of ASC 606.
Schedule of contract with customer, asset and liability
The following table provides balances of customer receivables, contract assets and contract liabilities, net of amounts classified as held for sale, as of December 31, 2023 and 2022:
December 31, 2023December 31, 2022
 (Dollars in millions)
Customer receivables(1)
$1,256 1,424 
Contract assets(2)
29 34 
Contract liabilities(3)
698 656 
______________________________________________________________________
(1)Reflects gross customer receivables of $1.3 billion and $1.5 billion, net of allowance for credit losses of $60 million and $73 million, at December 31, 2023 and December 31, 2022, respectively. At December 31, 2022 amounts exclude customer receivables, net, classified as held for sale of $76 million, related to the EMEA business which was sold November 1, 2023.
(2)At December 31, 2022 these amounts exclude contract assets classified as held for sale of $16 million, related to the EMEA business which was sold November 1, 2023.
(3)At December 31, 2022 these amounts exclude contract liabilities classified as held for sale of $59 million, related to the EMEA business which was sold November 1, 2023.
Schedule of capitalized contract cost
The following tables provide changes in our contract acquisition costs and fulfillment costs:
Year Ended December 31, 2023
Acquisition CostsFulfillment Costs
 (Dollars in millions)
Beginning of period balance$202 192 
Costs incurred136 157 
Amortization(152)(140)
Change in contract costs held for sale
(4)(25)
End of period balance$182 184 

Year Ended December 31, 2022
Acquisition CostsFulfillment Costs
 (Dollars in millions)
Beginning of period balance$222 186 
Costs incurred172 158 
Amortization(192)(149)
Classified as held for sale(1)
— (3)
End of period balance$202 192 
_____________________________________________________________________
(1)Represents changes in amounts classified as held for sale related to the divestitures of our Latin American and ILEC businesses on August 1, 2022 and October 3, 2022, respectively, as well as changes of $6 million acquisition costs and no fulfillment costs classified as held for sale as of December 31, 2022 related to the divestiture of the EMEA business, held for sale as of December 31, 2022 and completed November 1, 2023. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses.
v3.24.0.1
Leases (Tables)
12 Months Ended
Dec. 31, 2023
Leases [Abstract]  
Schedule of lease, cost
Lease expense consisted of the following:

Years Ended December 31,
202320222021
(Dollars in millions)
Operating and short-term lease cost$459 451 535 
Finance lease cost:
Amortization of right-of-use assets32 37 37 
Interest on lease liability12 15 16 
Total finance lease cost44 52 53 
Total lease cost$503 503 588 
Supplemental consolidated cash flow statement information related to leases is included below:
Years Ended December 31,
20232022
(Dollars in millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases$461 462 
Operating cash flows for finance leases12 15 
Financing cash flows for finance leases25 89 
Supplemental lease cash flow disclosures:
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities$143 381 
Right-of-use assets obtained in exchange for new finance lease liabilities10 94 
Schedule of assets and liabilities
Supplemental consolidated balance sheet information and other information related to leases is included below:
As of December 31,
Leases (Dollars in millions)Classification on the Balance Sheet20232022
Assets
Operating lease assetsOther, net$1,230 1,340 
Finance lease assetsProperty, plant and equipment, net of accumulated depreciation260 317 
Total leased assets$1,490 1,657 
Liabilities
Current
OperatingCurrent operating lease liabilities$268 344 
FinanceCurrent maturities of long-term debt16 16 
Noncurrent
OperatingOther1,040 1,088 
FinanceLong-term debt215 234 
Total lease liabilities$1,539 1,682 
Weighted-average remaining lease term (years)
Operating leases8.27.7
Finance leases11.312.0
Weighted-average discount rate
Operating leases7.59 %5.98 %
Finance leases4.98 %4.96 %
Schedule of maturity of operating lease liabilities
As of December 31, 2023, maturities of lease liabilities were as follows:
 Operating LeasesFinance Leases
 (Dollars in millions)
2024$350 26 
2025257 27 
2026204 28 
2027163 28 
2028130 28 
Thereafter698 166 
Total lease payments1,802 303 
Less: interest(494)(72)
Total1,308 231 
Less: current portion(268)(16)
Long-term portion$1,040 215 
Schedule of maturity of finance lease liabilities
As of December 31, 2023, maturities of lease liabilities were as follows:
 Operating LeasesFinance Leases
 (Dollars in millions)
2024$350 26 
2025257 27 
2026204 28 
2027163 28 
2028130 28 
Thereafter698 166 
Total lease payments1,802 303 
Less: interest(494)(72)
Total1,308 231 
Less: current portion(268)(16)
Long-term portion$1,040 215 
v3.24.0.1
Credit Losses on Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2023
Credit Loss [Abstract]  
Schedule of financing receivable, allowance for credit loss
The following table presents the activity of our allowance for credit losses by accounts receivable portfolio for the years ended December 31, 2023 and December 31, 2022:

BusinessMass MarketsTotal
(Dollars in millions)
Beginning balance at January 1, 2021$109 82 191 
Provision for expected losses50 55 105 
Write-offs charged against the allowance(76)(101)(177)
Recoveries collected13 19 
Classified as assets held for sale(1)
(8)(16)(24)
Balance at December 31, 2021$88 26 114 
Provision for expected losses25 108 133 
Write-offs charged against the allowance(61)(114)(175)
Recoveries collected10 16 
Change in allowance in assets held for sale(2)
(5)(3)
Balance at December 31, 2022$57 28 85 
Provision for expected losses35 65 100 
Write-offs charged against the allowance(62)(65)(127)
Recoveries collected
Balance at December 31, 2023
$36 31 67 
______________________________________________________________________
(1)Represents the amounts classified as held for sale related to the divestitures of our Latin American and ILEC businesses on August 1, 2022 and October 3, 2022, respectively. See Note 2—Divestitures of the Latin American and ILEC Businesses and Planned Divestiture of the EMEA Business.
(2)Represents changes in amounts classified as held for sale related to the divestitures of our Latin American and ILEC businesses on August 1, 2022 and October 3, 2022, respectively, and the inclusion of a $5 million allowance for credit losses classified as held for sale as of December 31, 2022 related to the divestiture of the EMEA business. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses.
v3.24.0.1
Long-Term Debt and Credit Facilities (Tables)
12 Months Ended
Dec. 31, 2023
Debt Disclosure [Abstract]  
Schedule of long-term debt including unamortized discounts and premiums
The following table reflects the consolidated long-term debt of Lumen Technologies, Inc. and its subsidiaries as of the dates indicated below, including unamortized discounts and premiums and unamortized debt issuance costs:
   As of December 31,
 
Interest Rates(1)
Maturities(1)
20232022
   (Dollars in millions)
Senior Secured Debt: (2)
Lumen Technologies, Inc.    
Revolving Credit Facility(3)
SOFR + 2.00%
2025$200 — 
Term Loan A(4)
SOFR + 2.00%
2025933 991 
Term Loan A-1(4)
SOFR + 2.00%
2025266 283 
Term Loan B(5)
SOFR + 2.25%
20273,891 3,941 
Senior notes
4.000%
20271,250 1,250 
Subsidiaries:
Level 3 Financing, Inc.
Tranche B 2027 Term Loan(6)
SOFR + 1.75%
20272,411 2,411 
Senior notes
3.400% - 10.500%
2027 - 2030
2,425 1,500 
Senior Notes and Other Debt:
Lumen Technologies, Inc.
Senior notes
4.500% - 7.650%
2025 - 2042
2,143 3,722 
Subsidiaries:   
Level 3 Financing, Inc.
Senior notes
3.625% - 4.625%
2027 - 2029
3,940 3,940 
Qwest Corporation
Senior notes
6.500% - 7.750%
2025 - 2057
1,986 1,986 
Term loan(7)
SOFR + 2.50%
2027215 215 
Qwest Capital Funding, Inc.
Senior notes
6.875% - 7.750%
2028 - 2031
192 192 
Finance lease and other obligations(8)
VariousVarious285 317 
Unamortized discounts, net  (4)(7)
Unamortized debt issuance costs(145)(169)
Total long-term debt  19,988 20,572 
Less current maturities  (157)(154)
Long-term debt, excluding current maturities  $19,831 20,418 
_______________________________________________________________________________
(1)As of December 31, 2023.
(2)See the remainder of this Note for a description of certain parent or subsidiary guarantees and liens securing this debt.
(3)Revolving Credit Facility had an interest rate of 7.464% as of December 31, 2023.
(4)Term Loans A and A-1 had interest rates of 7.470% and 6.384% as of December 31, 2023 and December 31, 2022, respectively.
(5)Term Loan B had interest rates of 7.720% and 6.634% as of December 31, 2023 and December 31, 2022, respectively.
(6)The Level 3 Tranche B 2027 Term Loan had interest rates of 7.220% and 6.134% as of December 31, 2023 and December 31, 2022, respectively.
(7)The Qwest Corporation Term Loan had interest rates of 7.970% and 6.640% as of December 31, 2023 and December 31, 2022, respectively.
(8)December 31, 2022 excludes finance lease obligations of our EMEA business that were classified as held for sale as of December 31, 2022 and sold on November 1, 2023. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses.
Schedule of maturities of long-term debt
Set forth below is the aggregate principal amount of our long-term debt as of December 31, 2023 (excluding unamortized discounts, net, and unamortized debt issuance costs) maturing during the following years.

 (Dollars in millions)
2024$157 
20251,864 
2026498 
20279,386 
20281,539 
2029 and thereafter6,693 
Total long-term debt$20,137 
Schedule of debt repayments
The following table sets forth the aggregate principal amount of each series of Lumen’s senior unsecured notes retired during the year ended December 31, 2023, in connection with the above-described exchange transactions:

DebtPeriod of Reduction
Aggregate principal (amounts in millions)
5.625% Senior Notes, Series X, due 2025
Q1 2023$48 
7.200% Senior Notes, Series D, due 2025
Q1 202321 
5.125% Senior Notes due 2026
Q1 2023291 
6.875% Debentures, Series G, due 2028
Q1 202352 
5.375% Senior Notes due 2029
Q1 2023275 
4.500% Senior Notes due 2029
Q1 2023556 
7.600% Senior Notes, Series P, due 2039
Q1 2023161 
7.650% Senior Notes, Series U, due 2042
Q1 2023131 
5.625% Senior Notes, Series X, due 2025
Q2 2023
4.500% Senior Notes due 2029
Q2 2023
7.600% Senior Notes, Series P, due 2039
Q2 2023
7.650% Senior Notes, Series U, due 2042
Q2 202313 
Total$1,554 
During 2022, Lumen borrowed $2.4 billion from, and made repayments of $2.6 billion to, its revolving credit facility. We used our net revolving credit draws and available cash to repay the following aggregate principal amounts of indebtedness through a combination of tender offers, redemptions, prepayments, amortization payments and payments at maturity. These transactions resulted in a net gain on the extinguishment of debt of $214 million.

DebtPeriod of Repayment(Dollars in millions)
Lumen Technologies, Inc.
5.800% Senior Notes due 2022 (at maturity)
Q1 2022$1,400 
6.750% Senior Notes, Series W, due 2023
Q4 2022750 
7.500% Senior Notes, Series Y, due 2024
Q4 2022982 
7.500% Senior Notes, Series Y, due 2024
Q3 202218 
5.625% Senior Notes, Series X, due 2025
Q4 2022286 
7.200% Senior Notes, Series D, due 2025
Q4 202234 
5.125% Senior Notes due 2026
Q4 2022520 
5.125% Senior Notes due 2026
Q3 202211 
6.875% Debentures, Series G, due 2028
Q4 2022130 
5.375% Senior Notes due 2029
Q4 2022494 
Term Loan B prepaymentQ4 2022909 
Scheduled term loan paymentsMultiple125 
Level 3 Financing, Inc.
Tranche B 2027 Term LoanQ3 2022700 
5.375% Senior Notes due 2025
Q3 2022800 
5.250% Senior Notes due 2026
Q3 2022775 
Embarq Corporation Subsidiaries
First Mortgage BondsQ4 2022137 
Qwest Capital Funding, Inc.
Senior NotesQ4 202263 
OtherQ4 202268 
Total debt repayments
$8,202 
Schedule of amount of gross interest expense, net of capitalized interest
Interest expense includes interest on total long-term debt. The following table presents the amount of gross interest expense, net of capitalized interest:

 Years Ended December 31,
 202320222021
 (Dollars in millions)
Interest expense:   
Gross interest expense$1,269 1,398 1,575 
Capitalized interest(111)(66)(53)
Total interest expense$1,158 1,332 1,522 
v3.24.0.1
Accounts Receivable (Tables)
12 Months Ended
Dec. 31, 2023
Receivables [Abstract]  
Schedule of components of accounts receivable
The following table presents details of our accounts receivable balances:
 As of December 31,
 2023
2022(1)
 (Dollars in millions)
Trade and purchased receivables$1,181 1,319 
Earned and unbilled receivables165 209 
Other39 65 
Total accounts receivable1,385 1,593 
Less: allowance for credit losses(67)(85)
Accounts receivable, less allowance$1,318 1,508 
______________________________________________________________________
(1)Amounts have been adjusted to reflect the immaterial correction of accounts receivable. See Note 1—Background and Summary of Significant Accounting Policies under the header Correction of Immaterial Errors.
v3.24.0.1
Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Schedule of net property, plant and equipment
Net property, plant and equipment is composed of the following:
 Depreciable
Lives
As of December 31,
 
2023
2022(5)
  (Dollars in millions)
LandN/A$646 651 
Fiber, conduit and other outside plant (1)
15-45 years
15,217 14,451 
Central office and other network electronics(2)
3-10 years
15,741 15,077 
Support assets(3)
3-30 years
6,714 6,863 
Construction in progress(4)
N/A2,758 2,010 
Gross property, plant and equipment 41,076 39,052 
Accumulated depreciation (21,318)(19,886)
Net property, plant and equipment $19,758 19,166 
_______________________________________________________________________________
(1)Fiber, conduit and other outside plant consists of fiber and metallic cable, conduit, poles and other supporting structures.
(2)Central office and other network electronics consists of circuit and packet switches, routers, transmission electronics and electronics providing service to customers.
(3)Support assets consist of buildings, data centers, computers and other administrative and support equipment.
(4)Construction in progress includes inventory held for construction and property of the aforementioned categories that has not been placed in service as it is still under construction.
(5)At December 31, 2022, we had $1.9 billion of certain property, plant and equipment, net related to our EMEA business which was classified as held for sale at this date and which was sold on November 1, 2023. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses for more information.
Schedule of changes to asset retirement obligations
The following table provides asset retirement obligation activity:
 Years Ended December 31,
 20232022
 (Dollars in millions)
Balance at beginning of year$156 182 
Accretion expense10 
Liabilities settled(9)(10)
Change in estimate
Classified as held for sale(1)
— (30)
Balance at end of year$157 156 
_______________________________________________________________________________
(1)Represents the amounts classified as held for sale related to our EMEA business. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses.
v3.24.0.1
Severance (Tables)
12 Months Ended
Dec. 31, 2023
Restructuring and Related Activities [Abstract]  
Schedule of changes in accrued liabilities for severance expenses and leased real estate
Changes in our accrued liabilities for severance expenses were as follows:
Severance
 (Dollars in millions)
Balance at December 31, 2021$36 
Accrued to expense12 
Payments, net(37)
Balance at December 31, 202211 
Accrued to expense74 
Payments, net(67)
Balance at December 31, 2023$18 
v3.24.0.1
Employee Benefits (Tables)
12 Months Ended
Dec. 31, 2023
Retirement Benefits [Abstract]  
Schedule of estimated future benefit payments The estimated benefit payments provided below are based on actuarial assumptions using the demographics of the employee and retiree populations and have been reduced by estimated participant contributions.
Combined Pension PlanPost-Retirement
Benefit Plans
Medicare Part D
Subsidy Receipts
 (Dollars in millions)
Estimated future benefit payments:   
2024$574 195 (2)
2025493 191 (2)
2026475 186 (2)
2027458 181 (2)
2028440 174 (2)
2029 - 20331,974 762 (6)
Schedule of actuarial assumptions used to compute net periodic benefit expense
The actuarial assumptions used to compute the net periodic benefit expense for our Combined Pension Plan and post-retirement benefit plans are based upon information available as of the beginning of the year, as presented in the following table.
 Combined Pension PlanPost-Retirement Benefit Plans
 202320222021202320222021
Actuarial assumptions at beginning of year:      
Discount rate
5.45% - 5.69%
2.29% - 3.12%
1.70% - 2.88%
5.43% - 5.75%
2.19% - 5.78%
1.58% - 2.60%
Rate of compensation increase3.25 %3.25 %3.25 %N/AN/AN/A
Expected long-term rate of return on plan assets(1)
6.50 %5.50 %5.50 %3.00 %4.00 %4.00 %
Initial health care cost trend rateN/AN/AN/A
7.20% / 5.00%
5.00% / 5.75%
6.25% / 5.00%
Ultimate health care cost trend rateN/AN/AN/A4.50 %4.50 %4.50 %
Year ultimate trend rate is reachedN/AN/AN/A203020252025
_______________________________________________________________________________
N/A - Not applicable
(1)Rates are presented net of projected fees and administrative costs.
Schedule of components of net periodic pension expense (income) and post-retirement benefit expense Net periodic benefit expense (income) for our Combined Pension Plan and the Lumen Pension Plan (through October 3, 2022, together the "Pension Plans") includes the following components:
 Pension Plans
Years Ended December 31,
 202320222021
 (Dollars in millions)
Service cost$25 44 56 
Interest cost270 194 201 
Expected return on plan assets(287)(385)(535)
Settlement charges— — 383 
Realized to gain on sale of businesses— 546 — 
Special termination benefits charge— 
Recognition of prior service credit(7)(10)(9)
Recognition of actuarial loss104 122 184 
Net periodic pension expense$107 511 286 
Net periodic benefit expense for our post-retirement benefit plans includes the following components:
 Post-Retirement Plans
Years Ended December 31,
 202320222021
 (Dollars in millions)
Service cost$10 14 
Interest cost103 72 47 
Realized to gain on sale of businesses— (32)— 
Recognition of prior service cost(8)15 
Recognition of actuarial loss(20)(4)
Net periodic post-retirement benefit expense$80 54 80 
Schedule of actuarial assumptions used to compute the funded status for the plans
The actuarial assumptions used to compute the funded status for the plans are based upon information available as of December 31, 2023 and 2022 and are as follows:
 Combined Pension PlanPost-Retirement Benefit Plans
 December 31,December 31,
 2023202220232022
Actuarial assumptions at end of year:    
Discount rate5.21 %5.56 %5.20 %5.55 %
Rate of compensation increase3.25 %3.25 %N/AN/A
Initial health care cost trend rateN/AN/A
7.50% / 5.40%
7.20% / 5.00%
Ultimate health care cost trend rateN/AN/A4.50 %4.50 %
Year ultimate trend rate is reachedN/AN/A20312030
_______________________________________________________________________________
N/A - Not applicable
Schedule of change in benefit obligation
The following tables summarize the change in the benefit obligations for the Combined Pension Plan and post-retirement benefit plans:
 Combined Pension Plan
Years Ended December 31,
 202320222021
 (Dollars in millions)
Change in benefit obligation   
Benefit obligation at beginning of year$5,295 9,678 12,202 
Plan spin-off— (2,552)— 
Service cost25 37 56 
Interest cost270 154 201 
Plan amendments— — (13)
Special termination benefits charge— 
Actuarial loss (gain)114 (1,432)(337)
Benefits paid from plan assets(494)(590)(766)
Settlement payments and annuity purchase— — (1,671)
Benefit obligation at end of year$5,212 5,295 9,678 

 Post-Retirement Benefit Plans
Years Ended December 31,
 202320222021
 (Dollars in millions)
Change in benefit obligation   
Benefit obligation at beginning of year$1,995 2,781 3,048 
Benefit obligation transferred to purchaser upon sale of business— (26)— 
Service cost10 14 
Interest cost103 72 47 
Participant contributions32 37 41 
Direct subsidy receipts
Plan amendments— (41)— 
Actuarial loss (gain)14 (591)(125)
Benefits paid by company(228)(249)(247)
Benefits paid from plan assets(4)— — 
Benefit obligation at end of year$1,919 1,995 2,781 
Schedule of change in plan assets
The following table summarizes the change in the fair value of plan assets for the Combined Pension Plan:

 Combined Pension Plan
Years Ended December 31,
 202320222021
 (Dollars in millions)
Change in plan assets   
Fair value of plan assets at beginning of year$4,715 8,531 10,546 
Plan spin-off— (2,239)— 
Return on plan assets255 (987)422 
Benefits paid from plan assets(494)(590)(766)
Settlement payments and annuity purchase— — (1,671)
Fair value of plan assets at end of year$4,476 4,715 8,531 
Schedule of fair value of the plans' assets by asset category
The table below presents the fair value of plan assets by category and the input levels used to determine those fair values at December 31, 2023. It is important to note that the asset allocations do not include market exposures that are gained with derivatives. Investments include dividend and interest receivables, pending trades and accrued expenses.
 Fair Value of Combined Pension Plan Assets at December 31, 2023
 Level 1Level 2Level 3Total
 (Dollars in millions)
Assets
Investment grade bonds (a)$390 1,838 — 2,228 
High yield bonds (b)— 32 36 
Emerging market bonds (c)57 57 — 114 
U.S. stocks (d)247 — 248 
Non-U.S. stocks (e)— — 
Multi-asset strategies (l)28 — — 28 
Total investments, excluding investments valued at NAV$728 1,927 2,660 
Liabilities
Repurchase agreements & other obligations (n)$— (375)— (375)
Derivatives (m)(1)— — (1)
Investments valued at NAV2,192 
Total pension plan assets   $4,476 
The table below presents the fair value of plan assets by category and the input levels used to determine those fair values at December 31, 2022. It is important to note that the asset allocations do not include market exposures that are gained with derivatives. Investments include dividend and interest receivable, pending trades and accrued expenses.
 Fair Value of Combined Pension Plan Assets at December 31, 2022
 Level 1Level 2Level 3Total
 (Dollars in millions)
Assets
Investment grade bonds (a)$446 1,720 — 2,166 
High yield bonds (b)— 48 52 
Emerging market bonds (c)49 78 — 127 
U.S. stocks (d)214 — 215 
Non-U.S. stocks (e)149 — 150 
Multi-asset strategies (l)25 — — 25 
Cash equivalents and short-term investments (o)— — 
Total investments, excluding investments valued at NAV$883 1,848 2,736 
Liabilities
Repurchase agreements (n)$— (269)— (269)
Derivatives (m)(1)(10)— (11)
Investments valued at NAV2,259 
Total pension plan assets   $4,715 

The table below presents the fair value of plan assets valued at NAV by category for our Combined Pension Plan at December 31, 2023 and 2022.
 Fair Value of Plan Assets Valued at NAV
 Combined Pension Plan at
December 31,
20232022
 (Dollars in millions)
Investment grade bonds (a)$105 99 
High yield bonds (b)110 81 
U.S. stocks (d)51 79 
Non-U.S. stocks (e)412 270 
Emerging market stocks (f)10 15 
Private equity (g)272 326 
Private debt (h)421 438 
Market neutral hedge funds (i)77 135 
Directional hedge funds (j)124 166 
Real estate (k)265 333 
Multi-asset strategies (l)27 24 
Cash equivalents and short-term investments (o)318 293 
Total investments valued at NAV$2,192 2,259 
Schedule of gross notional exposure of the derivative instruments directly held by the plans
 Gross Notional Exposure
 Combined Pension Plan
Years Ended December 31,
 20232022
 (Dollars in millions)
Derivative instruments:  
Exchange-traded U.S. equity futures$60 70 
Exchange-traded Treasury and other interest rate futures1,136 1,256 
Exchange-traded Foreign currency futures
Interest rate swaps214 82 
Credit default swaps72 139 
Index swaps94 90 
Foreign exchange forwards57 50 
Options32 251 
Schedule of changes in fair value of defined benefit plans' Level 3 assets
The table below presents a rollforward of the Combined Pension Plan assets valued using Level 3 inputs:
 Combined Pension Plan Assets Valued Using Level 3 Inputs
 High
Yield
Bonds
U.S. StocksTotal
 (Dollars in millions)
Balance at December 31, 2021$11 
Dispositions(1)(4)(5)
Actual return on plan assets(1)— (1)
Balance at December 31, 2022
(Dispositions) acquisitions(2)— (2)
Actual return on plan assets— 
Balance at December 31, 2023$
Schedule of the unfunded status of the benefit plans
The following table presents the unfunded status of the Combined Pension Plan and post-retirement benefit plans:
 Combined Pension PlanPost-Retirement
Benefit Plans
 Years Ended December 31,Years Ended December 31,
 2023202220232022
 (Dollars in millions)
Benefit obligation$(5,212)(5,295)(1,919)(1,995)
Fair value of plan assets4,476 4,715 
Unfunded status(736)(580)(1,918)(1,990)
Current portion of unfunded status— — (193)(210)
Non-current portion of unfunded status$(736)(580)(1,725)(1,780)
Schedule of items not recognized as a component of net periodic benefits expense
The following table presents cumulative items not recognized as a component of net periodic benefits expense as of December 31, 2022, items recognized as a component of net periodic benefits expense in 2023, additional items deferred during 2023 and cumulative items not recognized as a component of net periodic benefits expense as of December 31, 2023. The items not recognized as a component of net periodic benefits expense have been recorded on our consolidated balance sheets in accumulated other comprehensive loss:

 As of and for the Years Ended December 31,
2022Recognition
of Net
Periodic
Benefits
Expense
DeferralsNet
Change in
AOCL
2023
 (Dollars in millions)
Accumulated other comprehensive (loss) income     
Pension plans:     
Net actuarial (loss) gain$(1,752)80 (147)(67)(1,819)
Settlement charge383 — — — 383 
Prior service benefit (cost)17 (7)— (7)10 
Deferred income tax benefit (expense)367 (23)37 14 381 
Total pension plans(985)50 (110)(60)(1,045)
Post-retirement benefit plans:     
Net actuarial gain (loss)371 (20)(14)(34)337 
Prior service benefit (cost)37 (8)— (8)29 
Curtailment loss— — — 
Deferred income tax (expense) benefit(104)10 (94)
Total post-retirement benefit plans308 (21)(11)(32)276 
Total accumulated other comprehensive (loss) income$(677)29 (121)(92)(769)
The following table presents cumulative items not recognized as a component of net periodic benefits expense as of December 31, 2021, items recognized as a component of net periodic benefits expense in 2022, additional items deferred during 2022 and cumulative items not recognized as a component of net periodic benefits expense as of December 31, 2022. The items not recognized as a component of net periodic benefits expense have been recorded on our consolidated balance sheets in accumulated other comprehensive loss:

 As of and for the Years Ended December 31,
 2021Recognition
of Net
Periodic
Benefits
Expense
DeferralsNet
Change in
AOCL
2022
 (Dollars in millions)
Accumulated other comprehensive (loss) income     
Pension plans:     
Net actuarial (loss) gain$(2,564)688 124 812 (1,752)
Settlement charge383 — — — 383 
Prior service benefit (cost)45 (28)— (28)17 
Deferred income tax benefit (expense)559 (166)(26)(192)367 
Total pension plans(1,577)494 98 592 (985)
Post-retirement benefit plans:     
Net actuarial (loss) gain(217)(3)591 588 371 
Prior service (cost) benefit(5)41 42 37 
Curtailment loss— — — 
Deferred income tax benefit (expense)54 (159)(158)(104)
Total post-retirement benefit plans(164)(1)473 472 308 
Total accumulated other comprehensive (loss) income$(1,741)493 571 1,064 (677)
v3.24.0.1
Stock-based Compensation (Tables)
12 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule of restricted stock and restricted stock unit awards activity
The following table summarizes activity involving restricted stock and restricted stock unit awards for the year ended December 31, 2023:

Number of
Shares
Weighted-
Average
Grant Date
Fair Value
 (in thousands) 
Non-vested at December 31, 2022
27,279 $12.13 
Granted14,787 1.85 
Vested(7,170)10.10 
Forfeited(6,844)13.79 
Non-vested at December 31, 2023
28,052 6.82 
v3.24.0.1
(Loss) Earnings Per Common Share (Tables)
12 Months Ended
Dec. 31, 2023
Earnings Per Share [Abstract]  
Schedule of basic and diluted earnings (loss) per common share
Basic and diluted (loss) earnings per common share for the years ended December 31, 2023, 2022 and 2021 were calculated as follows:

 Years Ended December 31,
 202320222021
 (Dollars in millions, except per share amounts, shares in thousands)
(Loss) income (numerator)   
Net (loss) income$(10,298)(1,548)2,033 
Net (loss) income applicable to common stock for computing basic (loss) earnings per common share(10,298)(1,548)2,033 
Net (loss) income as adjusted for purposes of computing diluted (loss) earnings per common share$(10,298)(1,548)2,033 
Shares (denominator):  
Weighted average number of shares:   
Outstanding during period1,006,787 1,028,069 1,077,393 
Non-vested restricted stock(23,706)(20,552)(17,852)
Weighted average shares outstanding for computing basic (loss) earnings per common share983,081 1,007,517 1,059,541 
Incremental common shares attributable to dilutive securities:   
Shares issuable under convertible securities— — 10 
Shares issuable under incentive compensation plans— — 7,227 
Number of shares as adjusted for purposes of computing diluted (loss) earnings per common share983,081 1,007,517 1,066,778 
Basic (loss) earnings per common share$(10.48)(1.54)1.92 
Diluted (loss) earnings per common share(1)
$(10.48)(1.54)1.91 
______________________________________________________________________________
(1)For the years ended December 31, 2023 and December 31, 2022, we excluded from the calculation of diluted loss per share 0.3 million and 3.8 million shares, respectively, potentially issuable under incentive compensation plans or convertible securities, as their effect, if included, would have been anti-dilutive.
v3.24.0.1
Fair Value of Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2023
Fair Value Disclosures [Abstract]  
Schedule of the three input levels in the hierarchy of fair value measurements
The three input levels in the hierarchy of fair value measurements are defined by the FASB generally as follows:
Input LevelDescription of Input
Level 1Observable inputs such as quoted market prices in active markets.
Level 2Inputs other than quoted prices in active markets that are either directly or indirectly observable.
Level 3Unobservable inputs in which little or no market data exists.
Schedule of carrying amounts and estimated fair values of long-term debt, excluding capital lease obligations, and input levels to determine fair values
The following table presents the carrying amounts and estimated fair values of our following financial assets and liabilities as of December 31, 2023 and 2022:
  As of December 31, 2023As of December 31, 2022
 Input
Level
Carrying
Amount
Fair ValueCarrying
Amount
Fair Value
  (Dollars in millions)
Equity securities(1)
1$— — 22 22 
Long-term debt, excluding finance lease and other obligations
219,703 13,304 20,255 17,309 
Indemnifications related to the sale of the Latin American business(2)
386 86 86 86 
______________________________________________________________________
(1)For the years ended December 31, 2023 and 2022, we recognized a $22 million and a $109 million of loss on equity securities in other (expense) income, net in our consolidated statements of operations.
(2)Nonrecurring fair value is measured as of August 1, 2022.
Schedule of Investments held at net asset value
As of December 31, 2023As of December 31, 2022
Net Asset Value
(Dollars in millions)
Investment in limited partnership(1)
$10 85 
______________________________________________________________________
(1)For the years ended December 31, 2023 and December 31, 2022, we recognized $75 million and $83 million of loss on investment, respectively, reflected in other (expense) income, net in our consolidated statement of operations.
v3.24.0.1
Derivative Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of derivative instruments, gain (loss)
The amount of unrealized losses recognized in accumulated other comprehensive loss consists of the following (in millions):

Derivatives designated as hedging instruments
Cash flow hedging contracts
Year Ended December 31, 2021
$
Schedule of reclassifications out of accumulated other comprehensive income (loss) by component
The amount of realized losses reclassified from accumulated other comprehensive loss to the statement of operations consists of the following (in millions):

Derivatives designated as hedging instruments20222021
Cash flow hedging contracts
Years Ended December 31,$22 83 
The table below presents further information about our reclassifications out of accumulated other comprehensive loss by component for the year ended December 31, 2023:
Year Ended December 31, 2023(Decrease) Increase
in Net Loss
Affected Line Item in Consolidated Statement of
Operations
(Dollars in millions) 
Amortization of pension & post-retirement plans (1)
  
Net actuarial loss$82Other (expense) income, net
Prior service cost(15)Other (expense) income, net
Total before tax67  
Income tax benefit(16)Income tax expense
Net of tax$51  
Year Ended December 31, 2023
Reclassification out of Accumulated Other Comprehensive Loss
Affected line item in Consolidated Balance Sheets and Consolidated Statement of Operations
Reclassification of realized loss on foreign currency translation to valuation allowance within assets held for sale(2)
$389 
Assets held for sale
Reclassification of realized loss on foreign currency translation to loss on sale of business(3)
(7)
Net loss (gain) on sale of businesses
Subtotal reclassification of realized loss on foreign currency
382 
Reclassification of net actuarial loss to valuation allowance within assets held for sale(2)
(24)
Assets held for sale
Reclassification of net actuarial gain to loss on sale of business(3)
Net loss (gain) on sale of businesses
Subtotal reclassification of net actuarial loss
(22)
Income tax benefit
Income tax expense
Net of tax$360 
________________________________________________________________________
(1)See Note 11—Employee Benefits for additional information on our net periodic benefit (expense) income related to our pension and post-retirement plans.
(2)Recognized in net income through net loss (gain) on sale of business for the year ended December 31, 2022 and included in our valuation allowance in assets held for sale as of December 31, 2022.
(3)(Decrease) increase to net loss for the year ended December 31, 2023.
The table below presents further information about our reclassifications out of accumulated other comprehensive loss by component for the year ended December 31, 2022:
Year Ended December 31, 2022(Decrease) Increase
in Net Loss
Affected Line Item in Consolidated Statement of
Operations
 (Dollars in millions) 
Interest rate swap$22 Interest expense
Income tax benefit(5)Income tax expense
Net of tax$17 
Amortization of pension & post-retirement plans (1)
Net actuarial loss$121 Other (expense) income, net
Settlement charge(2)Other (expense) income, net
Reclassification of net actuarial loss and prior service credit to gain on the sale of business
539 Net loss (gain) on sale of businesses
Total before tax658  
Income tax benefit(165)Income tax expense
Net of tax$493  
Reclassification of realized loss on foreign currency translation to loss (gain) on sale of businesses
$112 Net loss (gain) on sale of businesses
Income tax benefit— Income tax expense
Net of tax$112 
________________________________________________________________________
(1)See Note 11—Employee Benefits for additional information on our net periodic benefit (expense) income related to our pension and post-retirement plans.
v3.24.0.1
Income Taxes (Tables)
12 Months Ended
Dec. 31, 2023
Income Tax Disclosure [Abstract]  
Schedule of components of provision for income tax
The components of the income tax expense are as follows:

 Years Ended December 31,
 202320222021
 (Dollars in millions)
Income tax expense:   
Federal   
Current$838 
Deferred(2)(332)514 
State   
Current(6)283 42 
Deferred55 (191)72 
Foreign   
Current— 32 23 
Deferred(73)12 
Total income tax expense$61 557 668 

 Years Ended December 31,
 202320222021
 (Dollars in millions)
Income tax expense was allocated as follows:   
Income tax expense in the consolidated statements of operations:   
Attributable to income$61 557 668 
Stockholders' equity:   
Tax effect of the change in accumulated other comprehensive loss$(21)297 222 
Schedule of reconciliation of the statutory federal income tax rate to effective income tax rate
The following is a reconciliation from the statutory federal income tax rate to our effective income tax rate:
 Years Ended December 31,
 202320222021
 (Percentage of pre-tax (loss) income)
Statutory federal income tax rate21.0 %21.0 %21.0 %
State income taxes, net of federal income tax benefit(0.2)%(8.8)%3.3 %
Goodwill impairment(21.9)%(68.9)%— %
Change in liability for unrecognized tax position(0.1)%(0.2)%0.1 %
Nondeductible executive stock compensation— %(0.1)%0.2 %
Change in valuation allowance1.3 %0.9 %— %
Net foreign income taxes— %3.0 %0.6 %
Research and development credits0.1 %1.1 %(0.5)%
Divestitures of businesses(1)
(0.4)%(4.0)%— %
Other, net(0.4)%(0.2)%— %
Effective income tax rate(0.6)%(56.2)%24.7 %
_______________________________________________________________________________
(1)Includes GILTI (as defined below) incurred as a result of the sale of our Latin American business.
Schedule of components of deferred tax assets and deferred tax liabilities
The tax effects of temporary differences that gave rise to significant portions of the deferred tax assets and deferred tax liabilities were as follows:
 As of December 31,
 2023
2022(1)
 (Dollars in millions)
Deferred tax assets  
Post-retirement and pension benefit costs$659 725 
Net operating loss carryforwards794 871 
Other employee benefits23 85 
Other511 519 
Gross deferred tax assets1,987 2,200 
Less valuation allowance(399)(550)
Net deferred tax assets1,588 1,650 
Deferred tax liabilities  
Property, plant and equipment, primarily due to depreciation differences(3,332)(3,046)
Goodwill and other intangible assets(1,271)(1,634)
Gross deferred tax liabilities(4,603)(4,680)
Net deferred tax liability$(3,015)(3,030)
_______________________________________________________________________________
(1)Excludes $138 million of deferred tax assets and $38 million of deferred tax liabilities related to the EMEA business sold November 1, 2023, that were classified as held for sale as of December 31, 2022.
Schedule of the reconciliation of the change in gross unrecognized tax benefits
A reconciliation of the change in our gross unrecognized tax benefits (excluding both interest and any related federal benefit) from January 1 to December 31 for 2023 and 2022 is as follows:
20232022
 (Dollars in millions)
Unrecognized tax benefits at beginning of year$1,318 1,375 
Decrease in tax positions of prior periods netted against deferred tax assets(411)(661)
(Decrease) increase in tax positions taken in the current year(73)634 
Increase (decrease) in tax positions taken in the prior year752 (3)
Decrease due to payments/settlements(1)— 
Decrease from the lapse of statute of limitations(52)— 
Decrease related to divestitures of businesses$(109)(27)
Unrecognized tax benefits at end of year$1,424 1,318 
v3.24.0.1
Segment Information (Tables)
12 Months Ended
Dec. 31, 2023
Segment Reporting [Abstract]  
Schedule of segment information
The following tables summarize our segment results for 2023, 2022 and 2021 based on the segment categorization we were operating under at December 31, 2023.
Year Ended December 31, 2023
BusinessMass Markets
(Dollars in millions)
Segment revenue$11,535 3,022 
Segment expense
Cost of services and products3,138 92 
Selling, general and administrative1,232 1,341 
Total expense4,370 1,433 
Total segment adjusted EBITDA$7,165 1,589 

Year Ended December 31, 2022
BusinessMass Markets
(Dollars in millions)
Segment revenue$13,041 4,437 
Segment expense
Cost of services and products3,257 124 
Selling, general and administrative1,215 1,623 
Total expense4,472 1,747 
Total segment adjusted EBITDA$8,569 2,690 
Year Ended December 31, 2021
BusinessMass Markets
(Dollars in millions)
Segment revenue$14,119 5,568 
Segment expense
Cost of services and products3,488 153 
Selling, general and administrative1,273 1,685 
Total expense4,761 1,838 
Total segment adjusted EBITDA$9,358 3,730 
Schedule of reconciliation from segment income to consolidated net income
The following table reconciles total segment adjusted EBITDA to net (loss) income for the years ended December 31, 2023, 2022 and 2021:
 Years Ended December 31,
 202320222021
 (Dollars in millions)
Total segment adjusted EBITDA$8,754 11,259 13,088 
Depreciation and amortization(2,985)(3,239)(4,019)
Goodwill impairment(10,693)(3,271)— 
Other unallocated expense(4,608)(4,556)(4,664)
Stock-based compensation(52)(98)(120)
Operating (loss) income(9,584)95 4,285 
Total other expense, net(653)(1,086)(1,584)
(Loss) income before income taxes(10,237)(991)2,701 
Income tax expense61 557 668 
Net (loss) income$(10,298)(1,548)2,033 
v3.24.0.1
Commitments, Contingencies and Other Items (Tables)
12 Months Ended
Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]  
Schedule of future rental commitments for right-of-way agreements
At December 31, 2023, our future rental commitments and Right-of-Way ("ROW") agreements were as follows:
 Future Rental Commitments and ROW Agreements
 (Dollars in millions)
2024$184 
202564 
202660 
202759 
202851 
2029 and thereafter676 
Total future minimum payments$1,094 
v3.24.0.1
Other Financial Information (Tables)
12 Months Ended
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of components of other current assets
The following table presents details of other current assets reflected in our consolidated balance sheets:
 As of December 31,
 2023
2022(1)
 (Dollars in millions)
Prepaid expenses$395 319 
Income tax receivable273 — 
Materials, supplies and inventory209 236 
Contract assets19 20 
Contract acquisition costs107 123 
Contract fulfillment costs102 100 
Other14 
Total other current assets
$1,119 803 
______________________________________________________________________
(1)Excludes $59 million of other current assets related to the EMEA business sold on November 1, 2023 that were classified as held for sale as of December 31, 2022.
v3.24.0.1
Accumulated Other Comprehensive Loss (Tables)
12 Months Ended
Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule of the entity's accumulated other comprehensive loss by component
The table below summarizes changes in accumulated other comprehensive loss recorded on our consolidated balance sheet by component for the year ended December 31, 2023:
Pension PlansPost-Retirement
Benefit Plans
Foreign Currency
Translation
Adjustment
and Other
Total
 (Dollars in millions)
Balance at December 31, 2022$(985)308 (422)(1,099)
Other comprehensive loss before reclassifications(110)(11)(1)(122)
Amounts reclassified from accumulated other comprehensive loss50 (21)382 411 
Net current-period other comprehensive (loss) income(60)(32)381 289 
Balance at December 31, 2023$(1,045)276 (41)(810)
The table below summarizes changes in accumulated other comprehensive loss recorded on our consolidated balance sheet by component for the year ended December 31, 2022:
Pension PlansPost-Retirement
Benefit Plans
Foreign Currency
Translation
Adjustment
and Other
Interest Rate SwapTotal
 (Dollars in millions)
Balance at December 31, 2021$(1,577)(164)(400)(17)(2,158)
Other comprehensive income (loss) before reclassifications98 473 (134)— 437 
Amounts reclassified from accumulated other comprehensive loss494 (1)112 17 622 
Net current-period other comprehensive income (loss)592 472 (22)17 1,059 
Balance at December 31, 2022$(985)308 (422)— (1,099)
Schedule of reclassifications out of accumulated other comprehensive loss by component
The amount of realized losses reclassified from accumulated other comprehensive loss to the statement of operations consists of the following (in millions):

Derivatives designated as hedging instruments20222021
Cash flow hedging contracts
Years Ended December 31,$22 83 
The table below presents further information about our reclassifications out of accumulated other comprehensive loss by component for the year ended December 31, 2023:
Year Ended December 31, 2023(Decrease) Increase
in Net Loss
Affected Line Item in Consolidated Statement of
Operations
(Dollars in millions) 
Amortization of pension & post-retirement plans (1)
  
Net actuarial loss$82Other (expense) income, net
Prior service cost(15)Other (expense) income, net
Total before tax67  
Income tax benefit(16)Income tax expense
Net of tax$51  
Year Ended December 31, 2023
Reclassification out of Accumulated Other Comprehensive Loss
Affected line item in Consolidated Balance Sheets and Consolidated Statement of Operations
Reclassification of realized loss on foreign currency translation to valuation allowance within assets held for sale(2)
$389 
Assets held for sale
Reclassification of realized loss on foreign currency translation to loss on sale of business(3)
(7)
Net loss (gain) on sale of businesses
Subtotal reclassification of realized loss on foreign currency
382 
Reclassification of net actuarial loss to valuation allowance within assets held for sale(2)
(24)
Assets held for sale
Reclassification of net actuarial gain to loss on sale of business(3)
Net loss (gain) on sale of businesses
Subtotal reclassification of net actuarial loss
(22)
Income tax benefit
Income tax expense
Net of tax$360 
________________________________________________________________________
(1)See Note 11—Employee Benefits for additional information on our net periodic benefit (expense) income related to our pension and post-retirement plans.
(2)Recognized in net income through net loss (gain) on sale of business for the year ended December 31, 2022 and included in our valuation allowance in assets held for sale as of December 31, 2022.
(3)(Decrease) increase to net loss for the year ended December 31, 2023.
The table below presents further information about our reclassifications out of accumulated other comprehensive loss by component for the year ended December 31, 2022:
Year Ended December 31, 2022(Decrease) Increase
in Net Loss
Affected Line Item in Consolidated Statement of
Operations
 (Dollars in millions) 
Interest rate swap$22 Interest expense
Income tax benefit(5)Income tax expense
Net of tax$17 
Amortization of pension & post-retirement plans (1)
Net actuarial loss$121 Other (expense) income, net
Settlement charge(2)Other (expense) income, net
Reclassification of net actuarial loss and prior service credit to gain on the sale of business
539 Net loss (gain) on sale of businesses
Total before tax658  
Income tax benefit(165)Income tax expense
Net of tax$493  
Reclassification of realized loss on foreign currency translation to loss (gain) on sale of businesses
$112 Net loss (gain) on sale of businesses
Income tax benefit— Income tax expense
Net of tax$112 
________________________________________________________________________
(1)See Note 11—Employee Benefits for additional information on our net periodic benefit (expense) income related to our pension and post-retirement plans.
v3.24.0.1
Dividends (Tables)
12 Months Ended
Dec. 31, 2023
Dividends, Common Stock [Abstract]  
Schedule of dividends declared
Our Board of Directors declared the following dividends payable in 2022:
Date DeclaredRecord DateDividend
Per Share
Total AmountPayment Date
   (in millions) 
August 18, 20228/30/2022$0.25 $253 9/9/2022
May 19, 20225/31/20220.25 253 6/10/2022
February 24, 20223/8/20220.25 253 3/18/2022
v3.24.0.1
Background and Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Feb. 25, 2019
Accounting Policies [Line Items]        
Advertising expense $ 87 $ 62 $ 56  
Book overdrafts $ 0 $ 0    
Accounts receivable, period past due (in days) 30 days      
Unissued shares of century link common stock (in shares) 11,000,000      
Preferred stock dividends (in dollars per share) $ 25      
Number of shares issued per share of common stock       1
Capitalized Software        
Accounting Policies [Line Items]        
Estimated useful life (in years) 7 years      
Minimum        
Accounting Policies [Line Items]        
Contract term (in years) 1 year      
Minimum | Customer Relationships        
Accounting Policies [Line Items]        
Estimated useful life (in years) 7 years      
Minimum | Other Intangible Assets        
Accounting Policies [Line Items]        
Estimated useful life (in years) 9 years      
Maximum        
Accounting Policies [Line Items]        
Contract term (in years) 5 years      
Customer relationship period for revenue recognition (in years) 20 years      
Maximum | Customer Relationships        
Accounting Policies [Line Items]        
Estimated useful life (in years) 14 years      
Maximum | Other Intangible Assets        
Accounting Policies [Line Items]        
Estimated useful life (in years) 20 years      
Weighted Average | Mass Markets        
Accounting Policies [Line Items]        
Length of customer life (in months) 36 months      
Weighted Average | Business        
Accounting Policies [Line Items]        
Length of customer life (in months) 33 months      
v3.24.0.1
Background and Summary of Significant Accounting Policies - Correction of Immaterial Errors (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Jan. 01, 2021
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Accounts receivable $ 1,318 $ 1,508  
Assets 34,018 45,612  
Accounts payable 1,134 1,044  
Accumulated deficit $ (17,907) (7,609)  
Correction of Error from Understatement of Revenues and Network Expenses Prior to 2021      
Error Corrections and Prior Period Adjustments Restatement [Line Items]      
Accounts receivable   31  
Assets   31  
Accounts payable   94  
Liabilities   $ 94  
Accumulated deficit     $ 63
v3.24.0.1
Divestitures of the Latin American, ILEC and EMEA Businesses (Details)
3 Months Ended 12 Months Ended
Oct. 31, 2023
USD ($)
Oct. 31, 2022
USD ($)
Oct. 03, 2022
USD ($)
state
Aug. 01, 2022
USD ($)
Oct. 31, 2021
USD ($)
Jul. 31, 2021
USD ($)
Jan. 31, 2021
USD ($)
Jun. 30, 2023
USD ($)
Mar. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Nov. 01, 2023
USD ($)
Jul. 25, 2021
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                              
Gain (loss) on disposal groups held for sale                     $ 0 $ (40,000,000) $ 0    
Goodwill                   $ 12,657,000,000 1,964,000,000 12,657,000,000 15,986,000,000    
Reclassification of realized loss on foreign currency translation       $ 112,000,000             382,000,000 112,000,000 0    
Goodwill impairment $ 1,900,000,000       $ 0 $ 0 $ 0 $ 8,800,000,000     10,693,000,000 3,271,000,000 $ 0    
Purchaser of ILEC                              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                              
Payments for purchase of services                 $ 89,000,000            
Purchase obligation     $ 373,000,000                        
Purchase obligation period (in years)     3 years                        
Pension Plans                              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                              
Reclassified of net actuarial loss and prior service credit, net of tax     $ 403,000,000                        
Purchaser of ILEC                              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                              
Purchase obligation     $ 67,000,000                        
Purchase obligation period (in years)     3 years                        
Disposal Group, Held-for-sale, Not Discontinued Operations | Latin American Business | Level 3 Parent, LLC                              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                              
Cash consideration from disposal of business                             $ 2,700,000,000
Disposal Group, Held-for-sale, Not Discontinued Operations | ILEC Business                              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                              
Cash consideration from disposal of business     $ 7,500,000,000                        
Long term debt, net of discounts     1,500,000,000                        
Disposal Group, Held-for-sale, Not Discontinued Operations | EMEA Business                              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                              
Goodwill impairment   $ 43,000,000                          
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Latin American Business                              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                              
Gain (loss) on disposal groups held for sale                       597,000,000      
Indemnifications related to the sale of businesses                   86,000,000   86,000,000      
Net assets       1,900,000,000                      
Property, plant and equipment, net accumulated depreciation       1,700,000,000                      
Goodwill       245,000,000                      
Accumulated amortization       140,000,000                      
Deferred income tax liabilities       $ 154,000,000                      
Disposal Group, Disposed of by Sale, Not Discontinued Operations | ILEC Business                              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                              
Gain (loss) on disposal groups held for sale                       176,000,000      
Indemnifications related to the sale of businesses                   89,000,000   89,000,000      
Net assets     4,800,000,000                        
Property, plant and equipment, net accumulated depreciation     3,600,000,000                        
Goodwill     $ 2,600,000,000                        
Number of states in which the business is conducted | state     20                        
Consideration after closing adjustments     $ 400,000,000                        
Long term debt, net of discounts     1,400,000,000                        
Net proceeds from sales of colocation business and data centers     $ 5,600,000,000                        
Disposal Group, Disposed of by Sale, Not Discontinued Operations | EMEA Business                              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                              
Gain (loss) on disposal groups held for sale                     $ 102,000,000 $ (660,000,000)      
Net assets                           $ 2,100,000,000  
Property, plant and equipment, net accumulated depreciation                           2,000,000,000  
Accumulated amortization                           107,000,000  
Goodwill impairment                   $ 43,000,000          
Disposal Group, Disposed of by Sale, Not Discontinued Operations | EMEA Business | Level 3 Parent, LLC                              
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                              
Cash consideration from disposal of business                           $ 1,700,000,000  
v3.24.0.1
Goodwill, Customer Relationships and Other Intangible Assets - Schedule of Goodwill and Intangible Assets (Details) - USD ($)
3 Months Ended 12 Months Ended
Oct. 31, 2023
Oct. 31, 2021
Jul. 31, 2021
Jan. 31, 2021
Dec. 31, 2023
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Mar. 31, 2023
Finite-Lived Intangible Assets [Line Items]                    
Goodwill         $ 1,964,000,000   $ 1,964,000,000 $ 12,657,000,000 $ 15,986,000,000  
Indefinite-lived intangible assets         9,000,000   9,000,000 9,000,000    
Total other intangible assets, net         5,470,000,000   5,470,000,000 6,166,000,000    
Goodwill impairment $ 1,900,000,000 $ 0 $ 0 $ 0   $ 8,800,000,000 10,693,000,000 3,271,000,000 $ 0  
Customer Relationships                    
Finite-Lived Intangible Assets [Line Items]                    
Finite-lived intangible assets, net         3,811,000,000   3,811,000,000 4,574,000,000    
Accumulated amortization         4,248,000,000   4,248,000,000 3,606,000,000    
Loss on sale of intangible assets         121,000,000   73,000,000      
Capitalized Software                    
Finite-Lived Intangible Assets [Line Items]                    
Finite-lived intangible assets, net         1,564,000,000   1,564,000,000 1,482,000,000    
Accumulated amortization         4,045,000,000   4,045,000,000 3,895,000,000    
Trade Names, Patents and Other                    
Finite-Lived Intangible Assets [Line Items]                    
Finite-lived intangible assets, net         86,000,000   86,000,000 101,000,000    
Accumulated amortization         $ 72,000,000   $ 72,000,000 $ 188,000,000    
Fully Amortized and Retired Capitalized Software                    
Finite-Lived Intangible Assets [Line Items]                    
Intangible assets, gross carrying value                   $ 183,000,000
Fully Amortized and Retired Trade Names                    
Finite-Lived Intangible Assets [Line Items]                    
Intangible assets, gross carrying value                   $ 130,000,000
v3.24.0.1
Goodwill, Customer Relationships and Other Intangible Assets - Additional Information (Details)
3 Months Ended 12 Months Ended
Oct. 31, 2023
USD ($)
reporting_unit
Oct. 31, 2022
USD ($)
reporting_unit
Oct. 31, 2021
USD ($)
derivative_agreement
Jul. 31, 2021
USD ($)
reporting_unit
Jan. 31, 2021
USD ($)
Jun. 30, 2023
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
segement
Dec. 31, 2023
USD ($)
reporting_unit
Dec. 31, 2023
USD ($)
segment
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]                          
Intangible assets, gross (including goodwill)             $ 15,800,000,000 $ 15,800,000,000 $ 15,800,000,000 $ 15,800,000,000 $ 15,800,000,000    
Impairment of indefinite-lived intangible assets               0       $ 0  
Number of reportable segments                 2   2    
Number of reporting units 3 4 5 5           3      
Finite-Lived Intangible Assets [Line Items]                          
Control premium (as a percent) 2.00% 59.00%                      
Goodwill impairment $ 1,900,000,000   $ 0 $ 0 $ 0 $ 8,800,000,000   10,693,000,000       3,271,000,000 $ 0
Acquired finite-lived intangible assets, weighted average useful life (in years)             6 years            
Amortization of intangible assets               $ 1,100,000,000       $ 1,100,000,000 $ 1,300,000,000
Number of reporting units 3 4 5 5           3      
Disposal Group, Held-for-sale, Not Discontinued Operations | EMEA Business                          
Finite-Lived Intangible Assets [Line Items]                          
Goodwill impairment   $ 43,000,000                      
Measurement Input, Revenue Multiple                          
Finite-Lived Intangible Assets [Line Items]                          
Goodwill impairment, measurement input (as a percent)   2.5                      
Measurement Input, EBITDA Multiple                          
Finite-Lived Intangible Assets [Line Items]                          
Goodwill impairment, measurement input (as a percent)   5.5                      
Customer Relationships                          
Finite-Lived Intangible Assets [Line Items]                          
Acquired finite-lived intangible assets, weighted average useful life (in years)             7 years            
Capitalized Software                          
Finite-Lived Intangible Assets [Line Items]                          
Acquired finite-lived intangible assets, weighted average useful life (in years)             4 years            
Minimum | Measurement Input, Revenue Multiple                          
Finite-Lived Intangible Assets [Line Items]                          
Goodwill impairment, measurement input (as a percent) 1.5 1.8       1.5              
Minimum | Measurement Input, EBITDA Multiple                          
Finite-Lived Intangible Assets [Line Items]                          
Goodwill impairment, measurement input (as a percent) 4.8 4.7       4.6              
Maximum | Measurement Input, Revenue Multiple                          
Finite-Lived Intangible Assets [Line Items]                          
Goodwill impairment, measurement input (as a percent) 3.5 4.6       4.3              
Maximum | Measurement Input, EBITDA Multiple                          
Finite-Lived Intangible Assets [Line Items]                          
Goodwill impairment, measurement input (as a percent) 8.4 10.8       10.5              
Mass Markets                          
Finite-Lived Intangible Assets [Line Items]                          
Goodwill impairment   $ 0                      
Goodwill, impairment (as a percent)   97.00% 277.00% 150.00%                  
NA Business                          
Finite-Lived Intangible Assets [Line Items]                          
Goodwill impairment   $ 3,200,000,000                      
Goodwill, impairment (as a percent)     8.00% 24.00%                  
EMEA                          
Finite-Lived Intangible Assets [Line Items]                          
Goodwill impairment   $ 0                      
Goodwill, impairment (as a percent)   171.00% 57.00% 58.00%                  
Latin America                          
Finite-Lived Intangible Assets [Line Items]                          
Goodwill, impairment (as a percent)     100.00% 100.00%                  
APAC                          
Finite-Lived Intangible Assets [Line Items]                          
Goodwill impairment   $ 0                      
Goodwill, impairment (as a percent)   101.00% 125.00% 134.00%                  
v3.24.0.1
Goodwill, Customer Relationships and Other Intangible Assets - Cost of Equity (Details)
Oct. 31, 2022
Mass Markets  
Finite-Lived Intangible Assets [Line Items]  
Weighted average cost of capital 9.40%
After-tax cost of debt 4.70%
Cost of equity 14.00%
NA Business  
Finite-Lived Intangible Assets [Line Items]  
Weighted average cost of capital 9.40%
After-tax cost of debt 4.70%
Cost of equity 14.00%
EMEA  
Finite-Lived Intangible Assets [Line Items]  
Weighted average cost of capital 9.80%
After-tax cost of debt 5.10%
Cost of equity 14.40%
APAC  
Finite-Lived Intangible Assets [Line Items]  
Weighted average cost of capital 11.30%
After-tax cost of debt 6.30%
Cost of equity 16.20%
v3.24.0.1
Goodwill, Customer Relationships and Other Intangible Assets - Rollforward Goodwill (Details) - USD ($)
3 Months Ended 12 Months Ended
Oct. 31, 2023
Oct. 31, 2021
Jul. 31, 2021
Jan. 31, 2021
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Goodwill Activity                
As of beginning of period           $ 12,657,000,000 $ 15,986,000,000  
Effect of foreign currency exchange rate change and other             (58,000,000)  
Impairment $ (1,900,000,000) $ 0 $ 0 $ 0 $ (8,800,000,000) (10,693,000,000) (3,271,000,000) $ 0
As of end of period           1,964,000,000 12,657,000,000 15,986,000,000
Goodwill accumulated impairment loss           21,700,000,000 11,000,000,000 7,700,000,000
Business                
Goodwill Activity                
As of beginning of period           7,906,000,000 11,235,000,000  
Effect of foreign currency exchange rate change and other             (58,000,000)  
Impairment           (7,906,000,000) (3,271,000,000)  
As of end of period           0 7,906,000,000 11,235,000,000
Mass Markets                
Goodwill Activity                
As of beginning of period           4,751,000,000 4,751,000,000  
Effect of foreign currency exchange rate change and other             0  
Impairment           (2,787,000,000)    
As of end of period           $ 1,964,000,000 $ 4,751,000,000 $ 4,751,000,000
v3.24.0.1
Goodwill, Customer Relationships and Other Intangible Assets - Future Amortization Expense (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2024 $ 922
2025 847
2026 803
2027 722
2028 $ 657
v3.24.0.1
Revenue Recognition - Revenue by Segment, Sales Channel and Product Category (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disaggregation of Revenue [Line Items]      
Total Revenue $ 14,557 $ 17,478 $ 19,687
Adjustments for Non-ASC 606 Revenue (1,036) (1,370) (1,892)
Total Revenue from Contracts with Customers 13,521 16,108 17,795
Goods and services transferred at a point in time      
Disaggregation of Revenue [Line Items]      
Total Revenue from Contracts with Customers 178 154 138
Services performed over time      
Disaggregation of Revenue [Line Items]      
Total Revenue from Contracts with Customers 13,343 15,954 17,657
Business      
Disaggregation of Revenue [Line Items]      
Total Revenue 11,535 13,041 14,119
Mass Markets      
Disaggregation of Revenue [Line Items]      
Total Revenue 3,022 4,437 5,568
Operating Segments | Business      
Disaggregation of Revenue [Line Items]      
Total Revenue 11,535 13,041 14,119
Adjustments for Non-ASC 606 Revenue (858) (1,018) (1,095)
Total Revenue from Contracts with Customers 10,677 12,023 13,024
Operating Segments | Business | Grow      
Disaggregation of Revenue [Line Items]      
Total Revenue 4,469 4,595 4,687
Adjustments for Non-ASC 606 Revenue (654) (758) (819)
Total Revenue from Contracts with Customers 3,815 3,837 3,868
Operating Segments | Business | Nurture      
Disaggregation of Revenue [Line Items]      
Total Revenue 3,465 4,094 4,540
Adjustments for Non-ASC 606 Revenue (25) (23) (25)
Total Revenue from Contracts with Customers 3,440 4,071 4,515
Operating Segments | Business | Harvest      
Disaggregation of Revenue [Line Items]      
Total Revenue 2,785 3,557 4,069
Adjustments for Non-ASC 606 Revenue (170) (226) (240)
Total Revenue from Contracts with Customers 2,615 3,331 3,829
Operating Segments | Business | Other      
Disaggregation of Revenue [Line Items]      
Total Revenue 816 795 823
Adjustments for Non-ASC 606 Revenue (9) (11) (11)
Total Revenue from Contracts with Customers 807 784 812
Operating Segments | Business | Large Enterprise      
Disaggregation of Revenue [Line Items]      
Total Revenue 4,616 5,377 5,918
Adjustments for Non-ASC 606 Revenue (299) (360) (434)
Total Revenue from Contracts with Customers 4,317 5,017 5,484
Operating Segments | Business | Large Enterprise | Grow      
Disaggregation of Revenue [Line Items]      
Total Revenue 2,167 2,415 2,552
Adjustments for Non-ASC 606 Revenue (294) (352) (427)
Total Revenue from Contracts with Customers 1,873 2,063 2,125
Operating Segments | Business | Large Enterprise | Nurture      
Disaggregation of Revenue [Line Items]      
Total Revenue 1,450 1,685 1,906
Adjustments for Non-ASC 606 Revenue 0 0 0
Total Revenue from Contracts with Customers 1,450 1,685 1,906
Operating Segments | Business | Large Enterprise | Harvest      
Disaggregation of Revenue [Line Items]      
Total Revenue 760 1,022 1,205
Adjustments for Non-ASC 606 Revenue 0 0 (2)
Total Revenue from Contracts with Customers 760 1,022 1,203
Operating Segments | Business | Large Enterprise | Other      
Disaggregation of Revenue [Line Items]      
Total Revenue 239 255 255
Adjustments for Non-ASC 606 Revenue (5) (8) (5)
Total Revenue from Contracts with Customers 234 247 250
Operating Segments | Business | Mid-Market Enterprise      
Disaggregation of Revenue [Line Items]      
Total Revenue 2,011 2,212 2,398
Adjustments for Non-ASC 606 Revenue (36) (40) (40)
Total Revenue from Contracts with Customers 1,975 2,172 2,358
Operating Segments | Business | Mid-Market Enterprise | Grow      
Disaggregation of Revenue [Line Items]      
Total Revenue 803 757 724
Adjustments for Non-ASC 606 Revenue (28) (32) (29)
Total Revenue from Contracts with Customers 775 725 695
Operating Segments | Business | Mid-Market Enterprise | Nurture      
Disaggregation of Revenue [Line Items]      
Total Revenue 797 915 1,026
Adjustments for Non-ASC 606 Revenue 0 0 0
Total Revenue from Contracts with Customers 797 915 1,026
Operating Segments | Business | Mid-Market Enterprise | Harvest      
Disaggregation of Revenue [Line Items]      
Total Revenue 378 510 613
Adjustments for Non-ASC 606 Revenue (4) (7) (7)
Total Revenue from Contracts with Customers 374 503 606
Operating Segments | Business | Mid-Market Enterprise | Other      
Disaggregation of Revenue [Line Items]      
Total Revenue 33 30 35
Adjustments for Non-ASC 606 Revenue (4) (1) (4)
Total Revenue from Contracts with Customers 29 29 31
Operating Segments | Business | Public Sector      
Disaggregation of Revenue [Line Items]      
Total Revenue 1,783 1,861 2,111
Adjustments for Non-ASC 606 Revenue (82) (109) (89)
Total Revenue from Contracts with Customers 1,701 1,752 2,022
Operating Segments | Business | Public Sector | Grow      
Disaggregation of Revenue [Line Items]      
Total Revenue 469 444 481
Adjustments for Non-ASC 606 Revenue (81) (103) (84)
Total Revenue from Contracts with Customers 388 341 397
Operating Segments | Business | Public Sector | Nurture      
Disaggregation of Revenue [Line Items]      
Total Revenue 398 490 528
Adjustments for Non-ASC 606 Revenue 0 0 0
Total Revenue from Contracts with Customers 398 490 528
Operating Segments | Business | Public Sector | Harvest      
Disaggregation of Revenue [Line Items]      
Total Revenue 383 468 569
Adjustments for Non-ASC 606 Revenue (1) (4) (3)
Total Revenue from Contracts with Customers 382 464 566
Operating Segments | Business | Public Sector | Other      
Disaggregation of Revenue [Line Items]      
Total Revenue 533 459 533
Adjustments for Non-ASC 606 Revenue 0 (2) (2)
Total Revenue from Contracts with Customers 533 457 531
Operating Segments | Business | Wholesale      
Disaggregation of Revenue [Line Items]      
Total Revenue 3,125 3,591 3,692
Adjustments for Non-ASC 606 Revenue (441) (509) (532)
Total Revenue from Contracts with Customers 2,684 3,082 3,160
Operating Segments | Business | Wholesale | Grow      
Disaggregation of Revenue [Line Items]      
Total Revenue 1,030 979 930
Adjustments for Non-ASC 606 Revenue (251) (271) (279)
Total Revenue from Contracts with Customers 779 708 651
Operating Segments | Business | Wholesale | Nurture      
Disaggregation of Revenue [Line Items]      
Total Revenue 820 1,004 1,080
Adjustments for Non-ASC 606 Revenue (25) (23) (25)
Total Revenue from Contracts with Customers 795 981 1,055
Operating Segments | Business | Wholesale | Harvest      
Disaggregation of Revenue [Line Items]      
Total Revenue 1,264 1,557 1,682
Adjustments for Non-ASC 606 Revenue (165) (215) (228)
Total Revenue from Contracts with Customers 1,099 1,342 1,454
Operating Segments | Business | Wholesale | Other      
Disaggregation of Revenue [Line Items]      
Total Revenue 11 51 0
Adjustments for Non-ASC 606 Revenue 0 0 0
Total Revenue from Contracts with Customers 11 51 0
Operating Segments | Mass Markets      
Disaggregation of Revenue [Line Items]      
Total Revenue 3,022 4,437 5,568
Adjustments for Non-ASC 606 Revenue (178) (352) (797)
Total Revenue from Contracts with Customers 2,844 4,085 4,771
Operating Segments | Mass Markets | Fiber Broadband      
Disaggregation of Revenue [Line Items]      
Total Revenue 636 604 524
Adjustments for Non-ASC 606 Revenue (16) (18) 0
Total Revenue from Contracts with Customers 620 586 524
Operating Segments | Mass Markets | Other Broadband      
Disaggregation of Revenue [Line Items]      
Total Revenue 1,394 2,164 2,507
Adjustments for Non-ASC 606 Revenue (126) (200) (227)
Total Revenue from Contracts with Customers 1,268 1,964 2,280
Operating Segments | Mass Markets | Voice and Other      
Disaggregation of Revenue [Line Items]      
Total Revenue 992 1,669 2,537
Adjustments for Non-ASC 606 Revenue (36) (134) (570)
Total Revenue from Contracts with Customers $ 956 $ 1,535 $ 1,967
v3.24.0.1
Revenue Recognition - Contract with Customer, Asset and Liability (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Capitalized Contract Cost [Line Items]    
Customer receivables $ 1,256 $ 1,424
Contract assets 29 34
Contract liabilities 698 656
Accounts receivable, gross 1,300 1,500
Allowance for doubtful accounts receivable $ 60 73
Disposal Group, Held-for-sale, Not Discontinued Operations | EMEA Business    
Capitalized Contract Cost [Line Items]    
Customer receivables   76
Contract assets   16
Contract liabilities   $ 59
v3.24.0.1
Revenue Recognition - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]      
Revenue recognized $ 434 $ 539  
Contract liabilities   $ 715 $ 841
Minimum      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]      
Contract term (in years) 1 year    
Maximum      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]      
Contract term (in years) 5 years    
Weighted Average | Mass Markets      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]      
Length of customer life (in months) 36 months    
Weighted Average | Business      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]      
Length of customer life (in months) 33 months    
v3.24.0.1
Revenue Recognition - Remaining Performance Obligation (Details)
$ in Billions
Dec. 31, 2023
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 6.8
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 2.8
Remaining performance obligation, satisfaction period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 1.7
Remaining performance obligation, satisfaction period 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 2.3
Remaining performance obligation, satisfaction period
v3.24.0.1
Revenue Recognition - Capitalized Contract Costs (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Acquisition Costs    
Capitalized Contract Cost [Roll Forward]    
Beginning of period balance $ 202 $ 222
Costs incurred 136 172
Amortization (152) (192)
Change in contract costs held for sale (4)  
Classified as held for sale   0
End of period balance 182 202
Acquisition Costs | Discontinued Operations | EMEA Business    
Capitalized Contract Cost [Roll Forward]    
Classified as held for sale   (6)
Fulfillment Costs    
Capitalized Contract Cost [Roll Forward]    
Beginning of period balance 192 186
Costs incurred 157 158
Amortization (140) (149)
Change in contract costs held for sale (25)  
Classified as held for sale   (3)
End of period balance $ 184 192
Fulfillment Costs | Discontinued Operations | EMEA Business    
Capitalized Contract Cost [Roll Forward]    
Classified as held for sale   $ 0
v3.24.0.1
Revenue Recognition - Governmental Funding (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended 84 Months Ended
Mar. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2020
Dec. 31, 2021
Government Assistance [Line Items]          
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration]   OPERATING REVENUE OPERATING REVENUE    
Government funding   $ 85 $ 190    
State Universal Service Fund Support Programs          
Government Assistance [Line Items]          
Government assistance (as a percent)   17.00% 31.00%    
CAF II Program          
Government Assistance [Line Items]          
Government funding $ 59       $ 500
RDOF Phase I Program          
Government Assistance [Line Items]          
Government funding   $ 17 $ 17    
Allocated support payments       $ 6,400  
Support payments period (in years)       10 years  
Government funding receivable       $ 17  
v3.24.0.1
Leases - Lease Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Leases [Abstract]      
Operating and short-term lease cost $ 459 $ 451 $ 535
Finance lease cost:      
Amortization of right-of-use assets 32 37 37
Interest on lease liability 12 15 16
Total finance lease cost 44 52 53
Total lease cost $ 503 $ 503 $ 588
v3.24.0.1
Leases - Additional Information (Details)
$ in Millions
12 Months Ended
Dec. 31, 2023
USD ($)
property
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Leases [Abstract]      
Number of ceased properties | property 42    
Accelerated lease costs $ 8 $ 0 $ 35
Donation 101    
Gross rental expense 503 503 588
Sublease income 25 25 25
Gross rental income $ 1,000 $ 1,200 $ 1,200
Rental income as percentage of operating revenue (as a percent) 7.00% 7.00% 6.00%
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] OPERATING REVENUE OPERATING REVENUE OPERATING REVENUE
v3.24.0.1
Leases - Supplemental Balance Sheet (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Assets    
Operating lease assets $ 1,230 $ 1,340
Finance lease assets 260 317
Total leased assets $ 1,490 $ 1,657
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Other, net Other, net
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Property, plant and equipment, net of accumulated depreciation of $21,318 and $19,886 Property, plant and equipment, net of accumulated depreciation of $21,318 and $19,886
Current    
Operating $ 268 $ 344
Finance $ 16 $ 16
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Long-Term Debt and Lease Obligation, Current Long-Term Debt and Lease Obligation, Current
Noncurrent    
Operating $ 1,040 $ 1,088
Finance $ 215 $ 234
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Other Other
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] LONG-TERM DEBT LONG-TERM DEBT
Total lease liabilities $ 1,539 $ 1,682
Weighted-average remaining lease term (years)    
Operating leases 8 years 2 months 12 days 7 years 8 months 12 days
Finance leases 11 years 3 months 18 days 12 years
Weighted-average discount rate    
Operating leases 7.59% 5.98%
Finance leases 4.98% 4.96%
v3.24.0.1
Leases - Supplemental Cash Flows (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Leases [Abstract]    
Operating cash flows for operating leases $ 461 $ 462
Operating cash flows for finance leases 12 15
Financing cash flows for finance leases 25 89
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities 143 381
Right-of-use assets obtained in exchange for new finance lease liabilities $ 10 $ 94
v3.24.0.1
Leases - Maturities (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Operating Leases    
2024 $ 350  
2025 257  
2026 204  
2027 163  
2028 130  
Thereafter 698  
Total lease payments 1,802  
Less: interest (494)  
Total 1,308  
Less: current portion (268) $ (344)
Long-term portion 1,040 1,088
Finance Leases    
2024 26  
2025 27  
2026 28  
2027 28  
2028 28  
Thereafter 166  
Total lease payments 303  
Less: interest (72)  
Total 231  
Less: current portion (16) (16)
Long-term portion $ 215 $ 234
v3.24.0.1
Credit Losses on Financial Instruments (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance $ 85 $ 114 $ 191
Provision for expected losses 100 133 105
Write-offs charged against the allowance (127) (175) (177)
Recoveries collected 9 16 19
Classified/ Change in allowance in assets held for sale   (3) (24)
Ending balance 67 85 114
Disposal Group, Held-for-sale, Not Discontinued Operations | EMEA Business      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Allowance for credit losses   5  
Business      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 57 88 109
Provision for expected losses 35 25 50
Write-offs charged against the allowance (62) (61) (76)
Recoveries collected 6 10 13
Classified/ Change in allowance in assets held for sale   (5) (8)
Ending balance 36 57 88
Mass Markets      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning balance 28 26 82
Provision for expected losses 65 108 55
Write-offs charged against the allowance (65) (114) (101)
Recoveries collected 3 6 6
Classified/ Change in allowance in assets held for sale   2 (16)
Ending balance $ 31 $ 28 $ 26
v3.24.0.1
Long-Term Debt and Credit Facilities - Schedule of Long Term Debt (Details) - USD ($)
$ in Millions
12 Months Ended
Nov. 27, 2019
Dec. 31, 2023
Dec. 31, 2022
Long-term Debt and Credit Facilities      
Finance lease and other obligations   $ 285 $ 317
Unamortized discounts, net   (4) (7)
Unamortized debt issuance costs   (145) (169)
Total long-term debt   19,988 20,572
Less current maturities   (157) (154)
Long-term debt, excluding current maturities   19,831 20,418
Credit Facility | Revolving Credit Facility      
Long-term Debt and Credit Facilities      
Long-term debt, gross   $ 200 0
Long-term debt, weighted average interest rate (as a percent)   7.464%  
Credit Facility | Revolving Credit Facility | SOFR      
Long-term Debt and Credit Facilities      
Basis spread (as a percent)   2.00%  
Term Loan | Term Loan A      
Long-term Debt and Credit Facilities      
Long-term debt, gross   $ 933 $ 991
Long-term debt, weighted average interest rate (as a percent)   7.47% 6.384%
Term Loan | Term Loan A | SOFR      
Long-term Debt and Credit Facilities      
Basis spread (as a percent)   2.00%  
Term Loan | Term Loan A-1      
Long-term Debt and Credit Facilities      
Long-term debt, gross   $ 266 $ 283
Long-term debt, weighted average interest rate (as a percent)   7.47% 6.384%
Term Loan | Term Loan A-1 | SOFR      
Long-term Debt and Credit Facilities      
Basis spread (as a percent)   2.00%  
Term Loan | Term Loan B      
Long-term Debt and Credit Facilities      
Long-term debt, gross   $ 3,891 $ 3,941
Long-term debt, weighted average interest rate (as a percent)   7.72% 6.634%
Term Loan | Term Loan B | SOFR      
Long-term Debt and Credit Facilities      
Basis spread (as a percent)   2.25%  
Senior Notes | Senior Notes Due 2027      
Long-term Debt and Credit Facilities      
Stated interest rate (as a percent)   4.00%  
Long-term debt, gross   $ 1,250 $ 1,250
Senior Notes | Senior Notes Due 2025-2042      
Long-term Debt and Credit Facilities      
Long-term debt, gross   $ 2,143 3,722
Senior Notes | Senior Notes Due 2025-2042 | Minimum      
Long-term Debt and Credit Facilities      
Stated interest rate (as a percent)   4.50%  
Senior Notes | Senior Notes Due 2025-2042 | Maximum      
Long-term Debt and Credit Facilities      
Stated interest rate (as a percent)   7.65%  
Level 3 Financing, Inc. | Term Loan | Tranche B 2027 Term Loan      
Long-term Debt and Credit Facilities      
Long-term debt, gross   $ 2,411 $ 2,411
Long-term debt, weighted average interest rate (as a percent)   7.22% 6.134%
Level 3 Financing, Inc. | Term Loan | Tranche B 2027 Term Loan | SOFR      
Long-term Debt and Credit Facilities      
Basis spread (as a percent) 1.00% 1.75%  
Level 3 Financing, Inc. | Senior Notes | Senior Notes Due 2027-2030      
Long-term Debt and Credit Facilities      
Long-term debt, gross   $ 2,425 $ 1,500
Level 3 Financing, Inc. | Senior Notes | Senior Notes Due 2027-2030 | Minimum      
Long-term Debt and Credit Facilities      
Stated interest rate (as a percent)   3.40%  
Level 3 Financing, Inc. | Senior Notes | Senior Notes Due 2027-2030 | Maximum      
Long-term Debt and Credit Facilities      
Stated interest rate (as a percent)   10.50%  
Level 3 Financing, Inc. | Senior Notes | Senior Notes Due 2027-2029      
Long-term Debt and Credit Facilities      
Long-term debt, gross   $ 3,940 3,940
Level 3 Financing, Inc. | Senior Notes | Senior Notes Due 2027-2029 | Minimum      
Long-term Debt and Credit Facilities      
Stated interest rate (as a percent)   3.625%  
Level 3 Financing, Inc. | Senior Notes | Senior Notes Due 2027-2029 | Maximum      
Long-term Debt and Credit Facilities      
Stated interest rate (as a percent)   4.625%  
Qwest Corporation | Term Loan      
Long-term Debt and Credit Facilities      
Long-term debt, gross   $ 215 $ 215
Long-term debt, weighted average interest rate (as a percent)   7.97% 6.64%
Qwest Corporation | Term Loan | SOFR      
Long-term Debt and Credit Facilities      
Basis spread (as a percent)   2.50%  
Qwest Corporation | Senior Notes      
Long-term Debt and Credit Facilities      
Long-term debt, gross   $ 1,986 $ 1,986
Qwest Corporation | Senior Notes | Minimum      
Long-term Debt and Credit Facilities      
Stated interest rate (as a percent)   6.50%  
Qwest Corporation | Senior Notes | Maximum      
Long-term Debt and Credit Facilities      
Stated interest rate (as a percent)   7.75%  
Qwest Capital Funding, Inc. | Senior Notes      
Long-term Debt and Credit Facilities      
Long-term debt, gross   $ 192 $ 192
Qwest Capital Funding, Inc. | Senior Notes | Minimum      
Long-term Debt and Credit Facilities      
Stated interest rate (as a percent)   6.875%  
Qwest Capital Funding, Inc. | Senior Notes | Maximum      
Long-term Debt and Credit Facilities      
Stated interest rate (as a percent)   7.75%  
v3.24.0.1
Long-Term Debt and Credit Facilities - Long-Term Debt Maturities (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Debt Disclosure [Abstract]  
2024 $ 157
2025 1,864
2026 498
2027 9,386
2028 1,539
2029 and thereafter 6,693
Total long-term debt $ 20,137
v3.24.0.1
Long-Term Debt and Credit Facilities - Amended and Restated Credit Agreement (Details) - USD ($)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Senior Secured Revolving Credit Facility    
Long-term Debt and Credit Facilities    
Borrowings $ 200,000,000  
Amended Credit Agreement | Base Rate | Minimum    
Long-term Debt and Credit Facilities    
Basis spread (as a percent) 1.50%  
Amended Credit Agreement | Base Rate | Maximum    
Long-term Debt and Credit Facilities    
Basis spread (as a percent) 2.25%  
Amended Credit Agreement | SOFR | Minimum    
Long-term Debt and Credit Facilities    
Basis spread (as a percent) 0.50%  
Amended Credit Agreement | SOFR | Maximum    
Long-term Debt and Credit Facilities    
Basis spread (as a percent) 1.25%  
Revolving Credit Facility | Letter of Credit    
Long-term Debt and Credit Facilities    
Borrowings $ 218,000,000  
Maximum borrowing capacity 800,000,000  
Revolving Credit Facility | Swingline Loan    
Long-term Debt and Credit Facilities    
Maximum borrowing capacity 250,000,000  
Credit Facility | Senior Secured Revolving Credit Facility    
Long-term Debt and Credit Facilities    
Long-term debt, gross 2,200,000,000  
Credit Facility | Revolving Credit Facility    
Long-term Debt and Credit Facilities    
Long-term debt, gross $ 200,000,000 $ 0
Credit Facility | Revolving Credit Facility | SOFR    
Long-term Debt and Credit Facilities    
Basis spread (as a percent) 2.00%  
Term Loan | Term Loan A    
Long-term Debt and Credit Facilities    
Long-term debt, gross $ 933,000,000 991,000,000
Term Loan | Term Loan A | SOFR    
Long-term Debt and Credit Facilities    
Basis spread (as a percent) 2.00%  
Term Loan | Term Loan A-1    
Long-term Debt and Credit Facilities    
Long-term debt, gross $ 266,000,000 283,000,000
Term Loan | Term Loan A-1 | SOFR    
Long-term Debt and Credit Facilities    
Basis spread (as a percent) 2.00%  
Term Loan | Term Loan B    
Long-term Debt and Credit Facilities    
Long-term debt, gross $ 3,891,000,000 $ 3,941,000,000
Term Loan | Term Loan B | SOFR    
Long-term Debt and Credit Facilities    
Basis spread (as a percent) 2.25%  
Term Loan | Amended Credit Agreement, Term Loan B | Base Rate    
Long-term Debt and Credit Facilities    
Basis spread (as a percent) 1.25%  
Term Loan | Amended Credit Agreement, Term Loan B | SOFR    
Long-term Debt and Credit Facilities    
Basis spread (as a percent) 2.25%  
v3.24.0.1
Long-Term Debt and Credit Facilities - Term Loans and Certain Other Debt of Subsidiaries (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 23, 2020
Nov. 27, 2019
Dec. 31, 2023
Dec. 31, 2022
Qwest Corporation | Term Loan        
Long-term Debt and Credit Facilities        
Long-term debt, gross     $ 215 $ 215
Qwest Corporation | Term Loan | SOFR        
Long-term Debt and Credit Facilities        
Basis spread (as a percent)     2.50%  
Qwest Corporation | CoBank ACB | Variable Rate Term Loan        
Long-term Debt and Credit Facilities        
Proceeds from issuance of debt $ 215      
Qwest Corporation | CoBank ACB | Variable Rate Term Loan | Minimum | SOFR        
Long-term Debt and Credit Facilities        
Basis spread (as a percent) 1.50%      
Qwest Corporation | CoBank ACB | Variable Rate Term Loan | Minimum | Base Rate        
Long-term Debt and Credit Facilities        
Basis spread (as a percent) 0.50%      
Qwest Corporation | CoBank ACB | Variable Rate Term Loan | Maximum | SOFR        
Long-term Debt and Credit Facilities        
Basis spread (as a percent) 2.50%      
Qwest Corporation | CoBank ACB | Variable Rate Term Loan | Maximum | Base Rate        
Long-term Debt and Credit Facilities        
Basis spread (as a percent) 1.50%      
Level 3 Financing, Inc. | Term Loan | Tranche B 2027 Term Loan        
Long-term Debt and Credit Facilities        
Long-term debt, gross     $ 2,411 $ 2,411
Level 3 Financing, Inc. | Term Loan | SOFR | Tranche B 2027 Term Loan        
Long-term Debt and Credit Facilities        
Basis spread (as a percent)   1.00% 1.75%  
Level 3 Financing, Inc. | Term Loan | SOFR | Tranche B 2027 Term Loan - Eurodollar        
Long-term Debt and Credit Facilities        
Basis spread (as a percent)   1.75%    
Level 3 Financing, Inc. | Term Loan | Base Rate | Tranche B 2027 Term Loan        
Long-term Debt and Credit Facilities        
Basis spread (as a percent)   0.75%    
Level 3 Financing, Inc. | Term Loan | Federal Funds Effective Rate | Tranche B 2027 Term Loan        
Long-term Debt and Credit Facilities        
Basis spread (as a percent)   0.50%    
v3.24.0.1
Long-Term Debt and Credit Facilities - Revolving Letters of Credit and Senior Notes (Details) - USD ($)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Senior Notes    
Long-term Debt and Credit Facilities    
Redemption price (as a percent) 101.00%  
Letter of Credit | Uncommitted Revolving Letter of Credit Facility    
Long-term Debt and Credit Facilities    
Maximum borrowing capacity $ 225,000,000  
Letter of Credit | Committed Facility and Various Other Facilities    
Long-term Debt and Credit Facilities    
Letters of credit outstanding 40,000,000 $ 94,000,000
Revolving Credit Facility    
Long-term Debt and Credit Facilities    
Letters of credit outstanding $ 218,000,000 $ 0
v3.24.0.1
Long-Term Debt and Credit Facilities - Borrowings and Repayments (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Long-term Debt and Credit Facilities      
Gain (loss) on extinguishment of debt $ 618 $ 214 $ 8
Revolving Credit Facility      
Long-term Debt and Credit Facilities      
Borrowings 925 2,400  
Repayments of debt $ 725 $ 2,600  
v3.24.0.1
Long-Term Debt and Credit Facilities - Exchange Offers and Repurchases (Details) - USD ($)
12 Months Ended
Apr. 17, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Mar. 31, 2023
Long-term Debt and Credit Facilities          
Aggregate principal amount $ 630,000,000        
Gain (loss) on extinguishment of debt   $ 618,000,000 $ 214,000,000 $ 8,000,000  
Level 3 Financing, Inc. | Senior Notes | 10.500% Senior Secured Notes Due 2030          
Long-term Debt and Credit Facilities          
Debt instrument, face amount $ 9,000,000       $ 915,000,000
Stated interest rate (as a percent) 10.50%       10.50%
Lumen Technologies Incorporated | Senior Notes          
Long-term Debt and Credit Facilities          
Debt instrument, face amount $ 19,000,000       $ 1,535,000,000
Repurchased face amount         $ 24,000,000
v3.24.0.1
Long-Term Debt and Credit Facilities - Aggregate Principal Senior Notes Retired (Details) - Senior Notes - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Long-term Debt and Credit Facilities          
Amount of debt redeemed     $ 1,554    
5.625% Senior Notes, Series X, due 2025          
Long-term Debt and Credit Facilities          
Stated interest rate (as a percent) 5.625% 5.625%   5.625%  
Amount of debt redeemed $ 1 $ 48      
7.200% Senior Notes, Series D, due 2025          
Long-term Debt and Credit Facilities          
Stated interest rate (as a percent)   7.20%   7.20%  
Amount of debt redeemed   $ 21      
5.125% Senior Notes due 2026          
Long-term Debt and Credit Facilities          
Stated interest rate (as a percent)   5.125%   5.125% 5.125%
Amount of debt redeemed   $ 291      
6.875% Debentures, Series G, due 2028          
Long-term Debt and Credit Facilities          
Stated interest rate (as a percent)   6.875%   6.875%  
Amount of debt redeemed   $ 52      
5.375% Senior Notes due 2029          
Long-term Debt and Credit Facilities          
Stated interest rate (as a percent)   5.375%   5.375%  
Amount of debt redeemed   $ 275      
4.500% Senior Notes due 2029          
Long-term Debt and Credit Facilities          
Stated interest rate (as a percent) 4.50% 4.50%      
Amount of debt redeemed $ 2 $ 556      
7.600% Senior Notes, Series P, due 2039          
Long-term Debt and Credit Facilities          
Stated interest rate (as a percent) 7.60% 7.60%      
Amount of debt redeemed $ 3 $ 161      
7.650% Senior Notes, Series U, due 2042          
Long-term Debt and Credit Facilities          
Stated interest rate (as a percent) 7.65% 7.65%      
Amount of debt redeemed $ 13 $ 131      
v3.24.0.1
Long-Term Debt and Credit Facilities - Schedule of Debt Repayments (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2022
Sep. 30, 2022
Mar. 31, 2022
Dec. 31, 2022
Jun. 30, 2023
Mar. 31, 2023
Long-term Debt and Credit Facilities            
Repayments of debt       $ 8,202    
Senior notes | 5.800% Senior Notes due 2022 (at maturity)            
Long-term Debt and Credit Facilities            
Stated interest rate (as a percent)     5.80%      
Repayments of debt     $ 1,400      
Senior notes | 6.750% Senior Notes, Series W, due 2023            
Long-term Debt and Credit Facilities            
Stated interest rate (as a percent) 6.75%     6.75%    
Repayments of debt $ 750          
Senior notes | 7.500% Senior Notes, Series Y, due 2024            
Long-term Debt and Credit Facilities            
Stated interest rate (as a percent) 7.50% 7.50%   7.50%    
Repayments of debt $ 982 $ 18        
Senior notes | 5.625% Senior Notes, Series X, due 2025            
Long-term Debt and Credit Facilities            
Stated interest rate (as a percent) 5.625%     5.625% 5.625% 5.625%
Repayments of debt $ 286          
Senior notes | 7.200% Senior Notes, Series D, due 2025            
Long-term Debt and Credit Facilities            
Stated interest rate (as a percent) 7.20%     7.20%   7.20%
Repayments of debt $ 34          
Senior notes | 5.125% Senior Notes due 2026            
Long-term Debt and Credit Facilities            
Stated interest rate (as a percent) 5.125% 5.125%   5.125%   5.125%
Repayments of debt $ 520 $ 11        
Senior notes | 6.875% Debentures, Series G, due 2028            
Long-term Debt and Credit Facilities            
Stated interest rate (as a percent) 6.875%     6.875%   6.875%
Repayments of debt $ 130          
Senior notes | 5.375% Senior Notes due 2029            
Long-term Debt and Credit Facilities            
Stated interest rate (as a percent) 5.375%     5.375%   5.375%
Repayments of debt $ 494          
Term Loan | Term Loan B            
Long-term Debt and Credit Facilities            
Repayments of debt 909          
Term Loan | Scheduled Term Loan            
Long-term Debt and Credit Facilities            
Repayments of debt       $ 125    
Other            
Long-term Debt and Credit Facilities            
Repayments of debt 68          
Level 3 Financing, Inc. | Senior notes | 5.375% Senior Notes due 2025            
Long-term Debt and Credit Facilities            
Stated interest rate (as a percent)   5.375%        
Repayments of debt   $ 800        
Level 3 Financing, Inc. | Senior notes | 5.250% Senior Notes due 2026            
Long-term Debt and Credit Facilities            
Stated interest rate (as a percent)   5.25%        
Repayments of debt   $ 775        
Level 3 Financing, Inc. | Term Loan | Tranche B 2027 Term Loan            
Long-term Debt and Credit Facilities            
Repayments of debt   $ 700        
Embarq Corporation Subsidiaries | First Mortgage Bonds | First Mortgage Bonds            
Long-term Debt and Credit Facilities            
Repayments of debt 137          
Qwest Capital Funding, Inc. | Senior notes            
Long-term Debt and Credit Facilities            
Repayments of debt $ 63          
v3.24.0.1
Long-Term Debt and Credit Facilities - Interest Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Debt Disclosure [Abstract]      
Gross interest expense $ 1,269 $ 1,398 $ 1,575
Capitalized interest (111) (66) (53)
Total interest expense $ 1,158 $ 1,332 $ 1,522
v3.24.0.1
Long-Term Debt and Credit Facilities - Covenants and Guarantees (Details)
Dec. 31, 2023
USD ($)
indenture
Letter of Credit | Uncommitted Revolving Letter of Credit Facility  
Long-term Debt and Credit Facilities  
Maximum borrowing capacity $ 225,000,000
Senior Notes  
Long-term Debt and Credit Facilities  
Number of indentures | indenture 4
Credit Facility | Letter of Credit | Uncommitted Revolving Letter of Credit Facility  
Long-term Debt and Credit Facilities  
Maximum borrowing capacity $ 225,000,000
Maximum  
Long-term Debt and Credit Facilities  
Leverage ratio 4.75
Maximum | Qwest Corporation  
Long-term Debt and Credit Facilities  
EBITDA ratio 2.85
Minimum  
Long-term Debt and Credit Facilities  
Coverage ratio 2.00
v3.24.0.1
Accounts Receivable - Schedule in Accounts Receivable (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total accounts receivable $ 1,385 $ 1,593
Other 39 65
Less: allowance for credit losses (67) (85)
Accounts receivable, less allowance 1,318 1,508
Earned and unbilled receivables    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total accounts receivable 165 209
Trade and purchased receivables    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total accounts receivable $ 1,181 $ 1,319
v3.24.0.1
Property, Plant and Equipment - Schedule of Property, Plant, and Equipment (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Property, plant and equipment    
Gross property, plant and equipment $ 41,076 $ 39,052
Accumulated depreciation (21,318) (19,886)
Net property, plant and equipment 19,758 19,166
Disposal Group, Held-for-sale, Not Discontinued Operations | EMEA Business    
Property, plant and equipment    
Property, plant and equipment, net classified as held for sale   1,900
Land    
Property, plant and equipment    
Gross property, plant and equipment 646 651
Fiber, conduit and other outside plant    
Property, plant and equipment    
Gross property, plant and equipment $ 15,217 14,451
Fiber, conduit and other outside plant | Minimum    
Property, plant and equipment    
Depreciable Lives 15 years  
Fiber, conduit and other outside plant | Maximum    
Property, plant and equipment    
Depreciable Lives 45 years  
Central office and other network electronics    
Property, plant and equipment    
Gross property, plant and equipment $ 15,741 15,077
Central office and other network electronics | Minimum    
Property, plant and equipment    
Depreciable Lives 3 years  
Central office and other network electronics | Maximum    
Property, plant and equipment    
Depreciable Lives 10 years  
Support assets    
Property, plant and equipment    
Gross property, plant and equipment $ 6,714 6,863
Support assets | Minimum    
Property, plant and equipment    
Depreciable Lives 3 years  
Support assets | Maximum    
Property, plant and equipment    
Depreciable Lives 30 years  
Construction in progress    
Property, plant and equipment    
Gross property, plant and equipment $ 2,758 $ 2,010
v3.24.0.1
Property, Plant and Equipment - Additional Information (Details) - USD ($)
$ in Billions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Property, Plant and Equipment [Abstract]      
Depreciation $ 1.9 $ 2.1 $ 2.7
v3.24.0.1
Property, Plant and Equipment - Change in ARO (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]    
Balance at beginning of year $ 156 $ 182
Accretion expense 6 10
Liabilities settled (9) (10)
Change in estimate 4 4
Classified as held for sale 0 (30)
Balance at end of year $ 157 $ 156
v3.24.0.1
Severance (Details) - Severance - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Restructuring reserve [Roll Forward]      
Balance at the beginning of the period   $ 11 $ 36
Accrued to expense   74 12
Payments, net   (67) (37)
Balance at the end of the period $ 18 $ 18 $ 11
Global Workforce Reduction      
Restructuring Cost and Reserve [Line Items]      
Percentage of positions eliminated 4.00%    
Restructuring costs $ 53    
v3.24.0.1
Employee Benefits - Additional Information (Details)
$ in Millions
1 Months Ended
Sep. 30, 2022
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Jan. 01, 2022
USD ($)
Employee
Dec. 31, 2021
USD ($)
retiree
Dec. 31, 2020
USD ($)
Combined Pension Plan            
Defined Benefit Plan Disclosure [Line Items]            
Benefit obligation   $ 5,212 $ 5,295   $ 9,678 $ 12,202
Fair value of plan assets (liabilities)   $ 4,476 $ 4,715   8,531 $ 10,546
Combined Pension Plan | New Lumen Pension Plan            
Defined Benefit Plan Disclosure [Line Items]            
Number of active participants (in employees) | Employee       2,500    
Number of other participants (in employees) | Employee       19,000    
Benefit obligation       $ 2,500    
Fair value of plan assets (liabilities)       $ 2,200    
Contributions $ 319          
US            
Defined Benefit Plan Disclosure [Line Items]            
Pension liability         $ 1,400  
US | Combined Pension Plan            
Defined Benefit Plan Disclosure [Line Items]            
Number of retirees | retiree         22,600  
v3.24.0.1
Employee Benefits - Pension Benefits, Additional Information (Details) - Combined Pension Plan - USD ($)
1 Months Ended 12 Months Ended
Sep. 30, 2022
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Funded (unfunded) status of plan   $ (736,000,000) $ (580,000,000)
Expected future benefits, next twelve months   574,000,000  
New Lumen Pension Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Contributions $ 319,000,000    
Qualified Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Funded (unfunded) status of plan   (736,000,000) (580,000,000)
Contributions   0 0
Nonqualified Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Funded (unfunded) status of plan   (33,000,000) (35,000,000)
Benefits paid by company   5,000,000 $ 5,000,000
Expected future benefits, next twelve months   $ 4,000,000  
Level 3 Parent, LLC      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Amortization period of the plan shortfall (in years)   7 years  
v3.24.0.1
Employee Benefits - Post-Retirement Benefits, Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Benefits paid, net of participant contributions and direct subsidy receipts $ 194,000,000    
Expected future benefit payment, next twelve months, net of direct subsidies $ 193,000,000    
Ultimate health care cost trend rate 4.50%    
Minimum      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Initial health care cost trend rate 5.40%    
Maximum      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Initial health care cost trend rate 7.50%    
Post-Retirement Benefit Plans      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Funded (unfunded) status of plan $ (1,918,000,000) $ (1,990,000,000)  
Contributions $ 0 $ 0  
Ultimate health care cost trend rate 4.50% 4.50% 4.50%
Post-Retirement Benefit Plans | Minimum      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Initial health care cost trend rate 5.40% 5.00%  
Post-Retirement Benefit Plans | Maximum      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Initial health care cost trend rate 7.50% 7.20%  
Post-Retirement Benefit Plans | Qualified Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Funded (unfunded) status of plan $ (1,900,000,000) $ (2,000,000,000)  
v3.24.0.1
Employee Benefits - Expected Cash Flows (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Medicare Part D Subsidy Receipts  
2024 $ (2)
2025 (2)
2026 (2)
2027 (2)
2028 (2)
2029 - 2033 (6)
Combined Pension Plan  
Defined Benefit Plan Disclosure [Line Items]  
2024 574
2025 493
2026 475
2027 458
2028 440
2029 - 2033 1,974
Post-Retirement Benefit Plans  
Defined Benefit Plan Disclosure [Line Items]  
2024 195
2025 191
2026 186
2027 181
2028 174
2029 - 2033 $ 762
v3.24.0.1
Employee Benefits - Net Periodic Benefit Costs Actuarial Assumptions (Details)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]      
Ultimate health care cost trend rate 4.50%    
Combined Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Rate of compensation increase 3.25% 3.25% 3.25%
Expected long-term rate of return on plan assets 6.50% 5.50% 5.50%
Combined Pension Plan | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 5.45% 2.29% 1.70%
Combined Pension Plan | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 5.69% 3.12% 2.88%
Post-Retirement Benefit Plans      
Defined Benefit Plan Disclosure [Line Items]      
Expected long-term rate of return on plan assets 3.00% 4.00% 4.00%
Ultimate health care cost trend rate 4.50% 4.50% 4.50%
Post-Retirement Benefit Plans | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 5.43% 2.19% 1.58%
Initial health care cost trend rate 7.20% 5.75% 5.00%
Post-Retirement Benefit Plans | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 5.75% 5.78% 2.60%
Initial health care cost trend rate 5.00% 5.00% 6.25%
v3.24.0.1
Employee Benefits - Schedule of Net Periodic Benefit (Income) Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Expected return on plan assets $ (287) $ (329)  
Combined Pension Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 25 44 $ 56
Interest cost 270 194 201
Expected return on plan assets (287) (385) (535)
Settlement charges 0 0 383
Realized to gain on sale of businesses 0 546 0
Special termination benefits charge 2 0 6
Recognition of prior service credit (7) (10) (9)
Recognition of actuarial loss 104 122 184
Net periodic pension expense 107 511 286
Post-Retirement Benefit Plans      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 5 10 14
Interest cost 103 72 47
Realized to gain on sale of businesses 0 (32) 0
Recognition of prior service credit (8) 8 15
Recognition of actuarial loss (20) (4) 4
Net periodic pension expense $ 80 $ 54 $ 80
v3.24.0.1
Employee Benefits - Net Periodic Benefit (Expense), Additional Information (Details) - Combined Pension Plan - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]      
Special termination benefits charge $ 2 $ 0 $ 6
One-time special termination charge     6
Settlement charges $ 0 $ 0 $ (383)
v3.24.0.1
Employee Benefits - Benefit Obligations Actuarial Assumptions (Details)
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]      
Ultimate health care cost trend rate 4.50%    
Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Initial health care cost trend rate 5.40%    
Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Initial health care cost trend rate 7.50%    
Combined Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 5.21% 5.56%  
Rate of compensation increase 3.25% 3.25%  
Post-Retirement Benefit Plans      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 5.20% 5.55%  
Ultimate health care cost trend rate 4.50% 4.50% 4.50%
Post-Retirement Benefit Plans | Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Initial health care cost trend rate 5.40% 5.00%  
Post-Retirement Benefit Plans | Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Initial health care cost trend rate 7.50% 7.20%  
v3.24.0.1
Employee Benefits - Benefit Obligations, Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Combined Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Benefit obligation $ 5,212 $ 5,295 $ 9,678 $ 12,202
Short term interest crediting rates 4.00%      
Long term interest crediting rates 3.50%      
Change in Assumptions for Defined Benefit Plans        
Defined Benefit Plan Disclosure [Line Items]        
Benefit obligation     $ 37  
v3.24.0.1
Employee Benefits - Change in Benefit Obligations (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Combined Pension Plan      
Change in benefit obligation      
Benefit obligation at beginning of year $ 5,295 $ 9,678 $ 12,202
Plan spin-off/ Benefit obligation transferred upon sale of business 0 (2,552) 0
Service cost 25 37 56
Interest cost 270 154 201
Plan amendments 0 0 (13)
Special termination benefits charge 2 0 6
Actuarial loss (gain) 114 (1,432) (337)
Benefits paid from plan assets (494) (590) (766)
Settlement payments and annuity purchase 0 0 (1,671)
Benefit obligation at end of year 5,212 5,295 9,678
Post-Retirement Benefit Plans      
Change in benefit obligation      
Benefit obligation at beginning of year 1,995 2,781 3,048
Plan spin-off/ Benefit obligation transferred upon sale of business 0 (26) 0
Service cost 5 10 14
Interest cost 103 72 47
Participant contributions 32 37 41
Direct subsidy receipts 2 2 3
Plan amendments 0 (41) 0
Actuarial loss (gain) 14 (591) (125)
Benefits paid by company (228) (249) (247)
Benefits paid from plan assets (4) 0 0
Benefit obligation at end of year $ 1,919 $ 1,995 $ 2,781
v3.24.0.1
Employee Benefits - Plan Assets, Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]          
Commingled funds, redemption notice period (in days)   180 days      
Return on plan assets   $ 255 $ (987)    
Expected return on plan assets   287 329    
Difference between the actual and expected returns on pension and post-retirement plan assets   (32) $ (1,300)    
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]     Other (expense) income, net    
Post-Retirement Benefit Plans          
Defined Benefit Plan Disclosure [Line Items]          
Fair value of plan assets (liabilities)   $ 1 $ 5 $ 5  
Expected long-term rate of return on plan assets   3.00% 4.00% 4.00%  
Combined Pension Plan          
Defined Benefit Plan Disclosure [Line Items]          
Fair value of plan assets (liabilities)   $ 4,476 $ 4,715 $ 8,531 $ 10,546
Expected long-term rate of return on plan assets   6.50% 5.50% 5.50%  
Expected long-term rate of return on plan assets before administrative expenses   6.50%      
Return on plan assets   $ 255 $ (987) $ 422  
Expected return on plan assets   $ 287 $ 385 $ 535  
Combined Pension Plan | Forecast          
Defined Benefit Plan Disclosure [Line Items]          
Expected long-term rate of return on plan assets 7.00%        
Combined Pension Plan | Debt Security          
Defined Benefit Plan Disclosure [Line Items]          
Plan assets, target allocation, percentage   50.00%      
Combined Pension Plan | Derivatives          
Defined Benefit Plan Disclosure [Line Items]          
Plan assets, target allocation, percentage   50.00%      
v3.24.0.1
Employee Benefits - Change in Plan Assets (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Change in plan assets      
Return on plan assets $ 255 $ (987)  
Combined Pension Plan      
Change in plan assets      
Fair value of plan assets at beginning of year 4,715 8,531 $ 10,546
Plan spin-off 0 (2,239) 0
Return on plan assets 255 (987) 422
Benefits paid from plan assets (494) (590) (766)
Settlement payments and annuity purchase 0 0 (1,671)
Fair value of plan assets at end of year $ 4,476 $ 4,715 $ 8,531
v3.24.0.1
Employee Benefits - Fair Value of Plan Assets and Liabilities (Details) - Combined Pension Plan - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 4,476 $ 4,715 $ 8,531 $ 10,546
Level 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 5 5 11  
NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 2,192 2,259    
Investment Grade Bonds | NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 105 99    
High Yield Bonds | Level 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 4 4 6  
High Yield Bonds | NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 110 81    
U.S. Stocks | Level 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1 1 $ 5  
U.S. Stocks | NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 51 79    
Non-U.S. Stocks | NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 412 270    
Multi-Asset Strategies | NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 27 24    
Cash Equivalents and Short-term Investments | NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 318 293    
Emerging Market Stocks | NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 10 15    
Private Equity | NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 272 326    
Private Debt | NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 421 438    
Market Neutral Hedge Funds | NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 77 135    
Directional Hedge Funds | NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 124 166    
Real Estate | NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 265 333    
Fair Value, Measurements, Recurring        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 4,476 4,715    
Fair Value, Measurements, Recurring | NAV        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 2,192 2,259    
Fair Value, Measurements, Recurring | Total Excluding Investments Valued at NAV | Total        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 2,660 2,736    
Fair Value, Measurements, Recurring | Total Excluding Investments Valued at NAV | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 728 883    
Fair Value, Measurements, Recurring | Total Excluding Investments Valued at NAV | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1,927 1,848    
Fair Value, Measurements, Recurring | Total Excluding Investments Valued at NAV | Level 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 5 5    
Fair Value, Measurements, Recurring | Investment Grade Bonds | Total        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 2,228 2,166    
Fair Value, Measurements, Recurring | Investment Grade Bonds | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 390 446    
Fair Value, Measurements, Recurring | Investment Grade Bonds | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1,838 1,720    
Fair Value, Measurements, Recurring | Investment Grade Bonds | Level 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Fair Value, Measurements, Recurring | High Yield Bonds | Total        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 36 52    
Fair Value, Measurements, Recurring | High Yield Bonds | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Fair Value, Measurements, Recurring | High Yield Bonds | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 32 48    
Fair Value, Measurements, Recurring | High Yield Bonds | Level 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 4 4    
Fair Value, Measurements, Recurring | Emerging Market Bonds | Total        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 114 127    
Fair Value, Measurements, Recurring | Emerging Market Bonds | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 57 49    
Fair Value, Measurements, Recurring | Emerging Market Bonds | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 57 78    
Fair Value, Measurements, Recurring | Emerging Market Bonds | Level 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Fair Value, Measurements, Recurring | U.S. Stocks | Total        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 248 215    
Fair Value, Measurements, Recurring | U.S. Stocks | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 247 214    
Fair Value, Measurements, Recurring | U.S. Stocks | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Fair Value, Measurements, Recurring | U.S. Stocks | Level 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 1 1    
Fair Value, Measurements, Recurring | Non-U.S. Stocks | Total        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 6 150    
Fair Value, Measurements, Recurring | Non-U.S. Stocks | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 6 149    
Fair Value, Measurements, Recurring | Non-U.S. Stocks | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 1    
Fair Value, Measurements, Recurring | Non-U.S. Stocks | Level 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Fair Value, Measurements, Recurring | Multi-Asset Strategies | Total        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 28 25    
Fair Value, Measurements, Recurring | Multi-Asset Strategies | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 28 25    
Fair Value, Measurements, Recurring | Multi-Asset Strategies | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Fair Value, Measurements, Recurring | Multi-Asset Strategies | Level 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Fair Value, Measurements, Recurring | Cash Equivalents and Short-term Investments | Total        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   1    
Fair Value, Measurements, Recurring | Cash Equivalents and Short-term Investments | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   0    
Fair Value, Measurements, Recurring | Cash Equivalents and Short-term Investments | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   1    
Fair Value, Measurements, Recurring | Cash Equivalents and Short-term Investments | Level 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets   0    
Fair Value, Measurements, Recurring | Repurchase Agreements & Other Obligations | Total        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets (375) (269)    
Fair Value, Measurements, Recurring | Repurchase Agreements & Other Obligations | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Fair Value, Measurements, Recurring | Repurchase Agreements & Other Obligations | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets (375) (269)    
Fair Value, Measurements, Recurring | Repurchase Agreements & Other Obligations | Level 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 0    
Fair Value, Measurements, Recurring | Derivatives | Total        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets (1) (11)    
Fair Value, Measurements, Recurring | Derivatives | Level 1        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets (1) (1)    
Fair Value, Measurements, Recurring | Derivatives | Level 2        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets 0 (10)    
Fair Value, Measurements, Recurring | Derivatives | Level 3        
Defined Benefit Plan Disclosure [Line Items]        
Fair value of plan assets $ 0 $ 0    
v3.24.0.1
Employee Benefits - Derivative Instruments (Details) - Combined Pension Plan - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Exchange-traded U.S. equity futures    
Defined Benefit Plan Disclosure [Line Items]    
Derivative, notional amount $ 60 $ 70
Exchange-traded Treasury and other interest rate futures    
Defined Benefit Plan Disclosure [Line Items]    
Derivative, notional amount 1,136 1,256
Exchange-traded Foreign currency futures    
Defined Benefit Plan Disclosure [Line Items]    
Derivative, notional amount 1 2
Interest rate swaps    
Defined Benefit Plan Disclosure [Line Items]    
Derivative, notional amount 214 82
Credit default swaps    
Defined Benefit Plan Disclosure [Line Items]    
Derivative, notional amount 72 139
Index swaps    
Defined Benefit Plan Disclosure [Line Items]    
Derivative, notional amount 94 90
Foreign exchange forwards    
Defined Benefit Plan Disclosure [Line Items]    
Derivative, notional amount 57 50
Options    
Defined Benefit Plan Disclosure [Line Items]    
Derivative, notional amount $ 32 $ 251
v3.24.0.1
Employee Benefits - Change in Plan Assets Measured at Fair Value (Details) - Combined Pension Plan - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Change in plan assets    
Fair value of plan assets at beginning of year $ 4,715 $ 8,531
Fair value of plan assets at end of year 4,476 4,715
Level 3    
Change in plan assets    
Fair value of plan assets at beginning of year 5 11
Dispositions (2) (5)
Actual return on plan assets 2 (1)
Fair value of plan assets at end of year 5 5
Level 3 | High Yield Bonds    
Change in plan assets    
Fair value of plan assets at beginning of year 4 6
Dispositions (2) (1)
Actual return on plan assets 2 (1)
Fair value of plan assets at end of year 4 4
Level 3 | U.S. Stocks    
Change in plan assets    
Fair value of plan assets at beginning of year 1 5
Dispositions 0 (4)
Actual return on plan assets 0 0
Fair value of plan assets at end of year $ 1 $ 1
v3.24.0.1
Employee Benefits - Unfunded Status (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]        
Non-current portion of unfunded status $ (2,490) $ (2,391)    
Combined Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Benefit obligation (5,212) (5,295) $ (9,678) $ (12,202)
Fair value of plan assets (liabilities) 4,476 4,715 8,531 10,546
Unfunded status (736) (580)    
Current portion of unfunded status 0 0    
Non-current portion of unfunded status (736) (580)    
Post-Retirement Benefit Plans        
Defined Benefit Plan Disclosure [Line Items]        
Benefit obligation (1,919) (1,995) (2,781) $ (3,048)
Fair value of plan assets (liabilities) 1 5 $ 5  
Unfunded status (1,918) (1,990)    
Current portion of unfunded status (193) (210)    
Non-current portion of unfunded status $ (1,725) $ (1,780)    
v3.24.0.1
Employee Benefits - Amounts Recognized in Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
AOCI Attributable To Parent, Tax [Roll Forward]      
Net Change in AOCL $ 21 $ (297) $ (222)
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at Beginning of Period 10,374 11,777  
Recognition of Net Periodic Benefits Expense 411 622  
Deferrals (122) 437  
Net Change in AOCL 289 1,059 655
Balance at End of Period 417 10,374 11,777
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at Beginning of Period (677) (1,741)  
Recognition of Net Periodic Benefits Expense 29 493  
Deferrals (121) 571  
Net Change in AOCL (92) 1,064  
Balance at End of Period (769) (677) (1,741)
Combined Pension Plan | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]      
AOCI Attributable To Parent, Tax [Roll Forward]      
Balance at Beginning of Period 367 559  
Recognition of Net Periodic Benefits Expense (23) (166)  
Deferrals 37 (26)  
Net Change in AOCL 14 (192)  
Balance at End of Period 381 367 559
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at Beginning of Period (985) (1,577)  
Recognition of Net Periodic Benefits Expense 50 494  
Deferrals (110) 98  
Net Change in AOCL (60) 592  
Balance at End of Period (1,045) (985) (1,577)
Combined Pension Plan | Net actuarial (loss) gain      
AOCI Attributable To Parent, Before Tax [Roll Forward]      
Balance at Beginning of Period (1,752) (2,564)  
Recognition of Net Periodic Benefits Expense 80 688  
Deferrals (147) 124  
Net Change in AOCL (67) 812  
Balance at End of Period (1,819) (1,752) (2,564)
Combined Pension Plan | Settlement charge      
AOCI Attributable To Parent, Before Tax [Roll Forward]      
Balance at Beginning of Period 383 383  
Recognition of Net Periodic Benefits Expense 0 0  
Deferrals 0 0  
Net Change in AOCL 0 0  
Balance at End of Period 383 383 383
Combined Pension Plan | Prior service benefit (cost)      
AOCI Attributable To Parent, Before Tax [Roll Forward]      
Balance at Beginning of Period 17 45  
Recognition of Net Periodic Benefits Expense (7) (28)  
Deferrals 0 0  
Net Change in AOCL (7) (28)  
Balance at End of Period 10 17 45
Post-Retirement Benefit Plans | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]      
AOCI Attributable To Parent, Tax [Roll Forward]      
Balance at Beginning of Period (104) 54  
Recognition of Net Periodic Benefits Expense 7 1  
Deferrals 3 (159)  
Net Change in AOCL 10 (158)  
Balance at End of Period (94) (104) 54
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at Beginning of Period 308 (164)  
Recognition of Net Periodic Benefits Expense (21) (1)  
Deferrals (11) 473  
Net Change in AOCL (32) 472  
Balance at End of Period 276 308 (164)
Post-Retirement Benefit Plans | Net actuarial (loss) gain      
AOCI Attributable To Parent, Before Tax [Roll Forward]      
Balance at Beginning of Period 371 (217)  
Recognition of Net Periodic Benefits Expense (20) (3)  
Deferrals (14) 591  
Net Change in AOCL (34) 588  
Balance at End of Period 337 371 (217)
Post-Retirement Benefit Plans | Prior service benefit (cost)      
AOCI Attributable To Parent, Before Tax [Roll Forward]      
Balance at Beginning of Period 37 (5)  
Recognition of Net Periodic Benefits Expense (8) 1  
Deferrals 0 41  
Net Change in AOCL (8) 42  
Balance at End of Period 29 37 (5)
Post-Retirement Benefit Plans | Curtailment loss      
AOCI Attributable To Parent, Before Tax [Roll Forward]      
Balance at Beginning of Period 4 4  
Recognition of Net Periodic Benefits Expense 0 0  
Deferrals 0 0  
Net Change in AOCL 0 0  
Balance at End of Period $ 4 $ 4 $ 4
v3.24.0.1
Employee Benefits - Other Benefit Plans (Details) - USD ($)
shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Retirement Benefits [Abstract]      
Active health care benefit expenses $ 288 $ 296 $ 309
Participating employees' contribution to health care plan $ 89 $ 101 120
Common stock included in the assets of the Defined Contribution Plan (in shares) 9 10  
Expenses related to the 401(k) Plan $ 87 $ 91 $ 96
v3.24.0.1
Stock-based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total fair value of awards vested during the period $ 21 $ 98 $ 139
Service Awards | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 1 year    
Service Awards | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years    
Restricted Stock and Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years    
Granted (in shares) 14,787 18,800 13,900
Granted (in dollars per share) $ 1.85 $ 11.47 $ 13.95
Restricted Stock and Restricted Stock Units | Service conditions      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years    
Restricted Stock and Restricted Stock Units | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of target award 0.00%    
Restricted Stock and Restricted Stock Units | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of target award 200.00%    
v3.24.0.1
Stock-based Compensation - Restricted Stock Awards and Restricted Stock Unit Awards Activity (Details) - Restricted Stock and Restricted Stock Units - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Number of Shares      
Nonvested at the beginning of the period (in shares) 27,279    
Granted (in shares) 14,787 18,800 13,900
Vested (in shares) (7,170)    
Forfeited (in shares) (6,844)    
Nonvested at the end of the period (in shares) 28,052 27,279  
Weighted- Average Grant Date Fair Value      
Nonvested at the beginning of the period (in dollars per share) $ 12.13    
Granted (in dollars per share) 1.85 $ 11.47 $ 13.95
Vested (in dollars per share) 10.10    
Forfeited (in dollars per share) 13.79    
Nonvested at the end of the period (in dollars per share) $ 6.82 $ 12.13  
v3.24.0.1
Stock-based Compensation - Compensation Expense and Tax Benefit (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share-Based Payment Arrangement [Abstract]      
Compensation cost $ 52 $ 98 $ 120
Tax benefit recognized in the income statement for share-based payment arrangements 12 $ 25 $ 29
Unrecognized compensation cost $ 65    
Weighted-average recognition period (in years) 1 year 6 months    
v3.24.0.1
(Loss) Earnings Per Common Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Number of shares of common stock excluded from the computation of diluted earnings per share (in shares) 22,500 13,800 3,200
(Loss) income (numerator)      
Net (loss) income $ (10,298) $ (1,548) $ 2,033
Net (loss) income applicable to common stock for computing basic (loss) earnings per common share (10,298) (1,548) 2,033
Net (loss) income as adjusted for purposes of computing diluted (loss) earnings per common share $ (10,298) $ (1,548) $ 2,033
Weighted average number of shares:      
Outstanding during period (in shares) 1,006,787 1,028,069 1,077,393
Non-vested restricted stock (in shares) (23,706) (20,552) (17,852)
Weighted average shares outstanding for computing basic (loss) earnings per common share (in shares) 983,081 1,007,517 1,059,541
Incremental common shares attributable to dilutive securities:      
Shares issuable under convertible securities (in shares) 0 0 10
Shares issuable under incentive compensation plans (in shares) 0 0 7,227
Number of shares as adjusted for purposes of computing diluted (loss) earnings per common share (in shares) 983,081 1,007,517 1,066,778
Basic (loss) earnings per common share (in dollars per share) $ (10.48) $ (1.54) $ 1.92
Diluted (loss) earnings per common share (in dollars per share) $ (10.48) $ (1.54) $ 1.91
Stock Compensation Plan      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Number of shares of common stock excluded from the computation of diluted earnings per share (in shares) 300 3,800  
v3.24.0.1
Fair Value of Financial Instruments - Carrying Amount and Fair Value of Debt (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Fair value disclosure    
Loss on equity securities $ 22 $ 109
Level 1 | Carrying Amount    
Fair value disclosure    
Equity securities 0 22
Level 1 | Fair Value    
Fair value disclosure    
Equity securities 0 22
Level 2 | Carrying Amount    
Fair value disclosure    
Long-term debt, excluding finance lease and other obligations 19,703 20,255
Level 2 | Fair Value    
Fair value disclosure    
Long-term debt, excluding finance lease and other obligations 13,304 17,309
Level 3 | Carrying Amount    
Fair value disclosure    
Indemnifications related to the sale of the Latin American business 86 86
Level 3 | Fair Value    
Fair value disclosure    
Indemnifications related to the sale of the Latin American business $ 86 $ 86
v3.24.0.1
Fair Value of Financial Instruments - Investments Held at Net Asset Value (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Loss on investments $ 75 $ 83
Fair Value | Net Asset Value    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Investment in limited partnership $ 10 $ 85
v3.24.0.1
Derivative Financial Instruments - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2019
Interest rate swaps    
Derivative [Line Items]    
Net losses reclassified to earnings upon settlement of cash flow hedging contracts $ 19  
Designated as Hedging Instrument | Variable-to-fixed interest rate swap    
Derivative [Line Items]    
Notional amount   $ 4,000
v3.24.0.1
Derivative Financial Instruments - (Gains) Losses Recognized in OCI (Details)
$ in Millions
12 Months Ended
Dec. 31, 2021
USD ($)
Designated as Hedging Instrument | Interest rate swaps  
Derivatives, Fair Value [Line Items]  
Unrealized losses recognized in other comprehensive income $ 1
v3.24.0.1
Derivative Financial Instruments - Reclassification from AOCI (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]      
Realized losses reclassified from AOCI $ 0 $ 17 $ 63
Designated as Hedging Instrument | Interest rate swaps      
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]      
Realized losses reclassified from AOCI   $ 22 $ 83
v3.24.0.1
Income Taxes - Components of Income Tax Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Federal      
Current $ 7 $ 838 $ 5
Deferred (2) (332) 514
State      
Current (6) 283 42
Deferred 55 (191) 72
Foreign      
Current 0 32 23
Deferred 7 (73) 12
Total income tax expense 61 557 668
Income tax expense in the consolidated statements of operations:      
Income tax expense 61 557 668
Stockholders' equity:      
Tax effect of the change in accumulated other comprehensive loss $ (21) $ 297 $ 222
v3.24.0.1
Income Taxes - Reconciliation (Details)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Reconciliation of the statutory federal income tax rate to effective income tax rate      
Statutory federal income tax rate 21.00% 21.00% 21.00%
State income taxes, net of federal income tax benefit (0.20%) (8.80%) 3.30%
Goodwill impairment (21.90%) (68.90%) 0.00%
Change in liability for unrecognized tax position (0.10%) (0.20%) 0.10%
Nondeductible executive stock compensation 0.00% (0.10%) 0.20%
Change in valuation allowance 1.30% 0.90% 0.00%
Net foreign income taxes 0.00% 3.00% 0.60%
Research and development credits 0.10% 1.10% (0.50%)
Divestitures of businesses (0.40%) (4.00%) 0.00%
Other, net (0.40%) (0.20%) 0.00%
Effective income tax rate (0.60%) (56.20%) 24.70%
v3.24.0.1
Income Taxes - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Income Tax Disclosure [Abstract]    
Unfavorable impact of non-deductible goodwill impairments $ 2,200 $ 682
Favorable impact of utilizing available capital loss 137  
Unfavorable impact related to incurring GILTI   128
Net deferred tax liability 3,015 3,030
Deferred income tax liabilities, net 3,127 3,163
Deferred income tax assets, net 112 133
Income taxes receivable 273  
Income taxes payable   943
Valuation allowance 399 550
Valuation allowance, DTA, decrease, amount 151  
Unrecognized tax benefits that would impact effective tax rate 280  
Interest on income taxes accrued 100 $ 26
Decrease in unrecorded benefit within the next 12 months 676  
Federal    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforward 800  
State    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforward $ 13,000  
v3.24.0.1
Income Taxes - Components of Net Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Deferred tax assets    
Post-retirement and pension benefit costs $ 659 $ 725
Net operating loss carryforwards 794 871
Other employee benefits 23 85
Other 511 519
Gross deferred tax assets 1,987 2,200
Less valuation allowance (399) (550)
Net deferred tax assets 1,588 1,650
Deferred tax liabilities    
Property, plant and equipment, primarily due to depreciation differences (3,332) (3,046)
Goodwill and other intangible assets (1,271) (1,634)
Gross deferred tax liabilities (4,603) (4,680)
Net deferred tax liability $ (3,015) (3,030)
Disposal Group, Not Discontinued Operations | EMEA Business    
Deferred tax liabilities    
Deferred tax assets   138
Deferred tax liabilities   $ 38
v3.24.0.1
Income Taxes - Unrecognized Tax Benefits (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]    
Unrecognized tax benefits at beginning of year $ 1,318 $ 1,375
Decrease in tax positions of prior periods netted against deferred tax assets (411) (661)
Decrease in tax positions taken in the current year (73)  
Increase in tax positions taken in the current year   634
Increase in tax positions taken in the prior year 752  
Decrease in tax positions taken in the prior year   (3)
Decrease due to payments/settlements (1) 0
Decrease from the lapse of statute of limitations (52) 0
Decrease related to divestitures of businesses (109) (27)
Unrecognized tax benefits at end of year $ 1,424 $ 1,318
v3.24.0.1
Segment Information - Additional Information (Details) - 12 months ended Dec. 31, 2023
segement
segment
sales_channel
Segment Reporting Information [Line Items]      
Number of reportable segments 2 2  
Number of operating segments | segment   2  
Business      
Segment Reporting Information [Line Items]      
Number of sales channel | sales_channel     4
v3.24.0.1
Segment Information - Segment Results and Operating Revenue (Details ) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Operating revenues by products and services      
Revenues $ 14,557 $ 17,478 $ 19,687
Cost of services and products 7,144 7,868 8,488
Selling, general and administrative 3,198 3,078 2,895
Business      
Operating revenues by products and services      
Revenues 11,535 13,041 14,119
Cost of services and products 3,138 3,257 3,488
Selling, general and administrative 1,232 1,215  
Selling, general and administrative     1,273
Total expense 4,370 4,472 4,761
Total segment adjusted EBITDA 7,165 8,569 9,358
Mass Markets      
Operating revenues by products and services      
Revenues 3,022 4,437 5,568
Cost of services and products 92 124 153
Selling, general and administrative 1,341 1,623  
Selling, general and administrative     1,685
Total expense 1,433 1,747 1,838
Total segment adjusted EBITDA $ 1,589 $ 2,690 $ 3,730
v3.24.0.1
Segment Information - Reconciliation (Details) - USD ($)
3 Months Ended 12 Months Ended
Oct. 31, 2023
Oct. 31, 2021
Jul. 31, 2021
Jan. 31, 2021
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]                
Depreciation and amortization           $ (2,985,000,000) $ (3,239,000,000) $ (4,019,000,000)
Goodwill impairment $ (1,900,000,000) $ 0 $ 0 $ 0 $ (8,800,000,000) (10,693,000,000) (3,271,000,000) 0
Stock-based compensation           (52,000,000) (98,000,000) (120,000,000)
OPERATING (LOSS) INCOME           (9,584,000,000) 95,000,000 4,285,000,000
Total other expense, net           (653,000,000) (1,086,000,000) (1,584,000,000)
(Loss) income before income taxes           (10,237,000,000) (991,000,000) 2,701,000,000
Income tax expense           61,000,000 557,000,000 668,000,000
NET (LOSS) INCOME           (10,298,000,000) (1,548,000,000) 2,033,000,000
Operating Segments                
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]                
Total segment adjusted EBITDA           8,754,000,000 11,259,000,000 13,088,000,000
Segment Reconciling Items                
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]                
Depreciation and amortization           (2,985,000,000) (3,239,000,000) (4,019,000,000)
Goodwill impairment           (10,693,000,000) (3,271,000,000) 0
Other unallocated expense           (4,608,000,000) (4,556,000,000) (4,664,000,000)
Stock-based compensation           (52,000,000) (98,000,000) (120,000,000)
OPERATING (LOSS) INCOME           (9,584,000,000) 95,000,000 4,285,000,000
Total other expense, net           $ (653,000,000) $ (1,086,000,000) $ (1,584,000,000)
v3.24.0.1
Commitments, Contingencies and Other Items - Additional Information (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Dec. 30, 2021
lawsuit
People
Jun. 30, 2023
USD ($)
Jun. 30, 2021
USD ($)
subsidiary
Dec. 31, 2020
USD ($)
Feb. 28, 2017
USD ($)
lawsuit
Dec. 31, 2023
USD ($)
patent
lawsuit
Dec. 31, 2022
USD ($)
Commitments and Contingencies              
Estimate of possible loss           $ 84,000 $ 88,000
Number of patents allegedly infringed | patent           1  
Number of people killed in fire | People 2            
Purchase obligations maturities              
Total purchase commitments           $ 1,000,000  
2024           403,000  
2025 through 2026           378,000  
2027 through 2028           78,000  
2029 and thereafter           127,000  
Penalties For Violation Of Washington Regulations And Laws Filed By Staff Of W U T C              
Commitments and Contingencies              
Loss contingency, damages sought, value       $ 7,000      
Penalties Sought By Washington Attorneys General Office              
Commitments and Contingencies              
Loss contingency, damages sought, value       $ 27,000      
Penalties Sought For Violation Of Regulations And Laws Of W U T C              
Commitments and Contingencies              
Loss contingency, damages awarded, value   $ 1,000          
Unfavorable regulatory action              
Commitments and Contingencies              
Estimate of possible loss           $ 300  
Missouri Municipalities | Judicial ruling              
Commitments and Contingencies              
Number of patents allegedly infringed | lawsuit         1    
Litigation settlement amount         $ 4,000    
Peruvian Tax Litigation | Pending litigation              
Commitments and Contingencies              
Number of subsidiaries issues with tax assessment | subsidiary     1,000,000        
Columbia and Joplin Municipalities | Judicial ruling              
Commitments and Contingencies              
Litigation settlement amount     $ 55,000        
Marshall Fire Litigation | Pending litigation              
Commitments and Contingencies              
Number of lawsuits filed | lawsuit 300            
Number of pending claims | lawsuit           3  
Marshall Fire Litigation | Pending litigation | Minimum              
Commitments and Contingencies              
Estimate of possible loss           $ 2,000,000  
v3.24.0.1
Commitments, Contingencies and Other Items - Right of Way Agreements (Details) - Future Rental Commitments and ROW Agreements
$ in Millions
Dec. 31, 2023
USD ($)
Future rental commitments  
2024 $ 184
2025 64
2026 60
2027 59
2028 51
2029 and thereafter 676
Total future minimum payments $ 1,094
v3.24.0.1
Other Financial Information - Other Current Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Prepaid Expenses and Other Current Assets [Abstract]    
Prepaid expenses $ 395 $ 319
Income tax receivable 273 0
Materials, supplies and inventory 209 236
Contract assets 19 20
Other 14 5
Total other current assets 1,119 803
Disposal Group, Held-for-sale, Not Discontinued Operations | EMEA Business    
Prepaid Expenses and Other Current Assets [Abstract]    
Other current assets reclassified as held for sale   59
Acquisition Costs    
Prepaid Expenses and Other Current Assets [Abstract]    
Contract costs 107 123
Fulfillment Costs    
Prepaid Expenses and Other Current Assets [Abstract]    
Contract costs $ 102 $ 100
v3.24.0.1
Other Financial Information - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Capital expenditures included in accounts payable $ 274 $ 265
v3.24.0.1
Repurchases of Lumen Common Stock (Details) - USD ($)
3 Months Ended 12 Months Ended
Aug. 03, 2021
Dec. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Equity [Abstract]          
Repurchase program, period (in years) 24 months 2 years      
Repurchase program, authorized amount $ 1,000,000,000 $ 1,500,000,000   $ 1,500,000,000  
Number of shares repurchased     0 33,000,000 80,900,000
Repurchases of common stock       $ 200,000,000 $ 1,000,000,000
Average purchase price (in dollars per share)       $ 6.07 $ 12.36
Common Stock          
Equity [Abstract]          
Repurchases of common stock     $ 0 $ 33,000,000 $ 81,000,000
Equity, Class of Treasury Stock [Line Items]          
Repurchased common stock that were retired       33,000,000 81,000,000
Additional Paid-in Capital          
Equity [Abstract]          
Repurchases of common stock     $ 0 167,000,000 919,000,000
Equity, Class of Treasury Stock [Line Items]          
Repurchased common stock that were retired       $ 167,000,000 $ 919,000,000
v3.24.0.1
Accumulated Other Comprehensive Loss - AOCI Activity (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at Beginning of Period $ 10,374 $ 11,777  
Other comprehensive income (loss) before reclassifications (122) 437  
Amounts reclassified from accumulated other comprehensive loss 411 622  
Other comprehensive income 289 1,059 $ 655
Balance at End of Period 417 10,374 11,777
Defined Benefit Plans      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at Beginning of Period (677) (1,741)  
Other comprehensive income (loss) before reclassifications (121) 571  
Amounts reclassified from accumulated other comprehensive loss 29 493  
Other comprehensive income (92) 1,064  
Balance at End of Period (769) (677) (1,741)
Defined Benefit Plans | Pension Plans      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at Beginning of Period (985) (1,577)  
Other comprehensive income (loss) before reclassifications (110) 98  
Amounts reclassified from accumulated other comprehensive loss 50 494  
Other comprehensive income (60) 592  
Balance at End of Period (1,045) (985) (1,577)
Defined Benefit Plans | Post-Retirement Benefit Plans      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at Beginning of Period 308 (164)  
Other comprehensive income (loss) before reclassifications (11) 473  
Amounts reclassified from accumulated other comprehensive loss (21) (1)  
Other comprehensive income (32) 472  
Balance at End of Period 276 308 (164)
Foreign Currency Translation Adjustment and Other      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at Beginning of Period (422) (400)  
Other comprehensive income (loss) before reclassifications (1) (134)  
Amounts reclassified from accumulated other comprehensive loss 382 112  
Other comprehensive income 381 (22)  
Balance at End of Period (41) (422) (400)
Interest Rate Swap      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at Beginning of Period 0 (17)  
Other comprehensive income (loss) before reclassifications   0  
Amounts reclassified from accumulated other comprehensive loss   17  
Other comprehensive income   17  
Balance at End of Period   0 (17)
Total      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at Beginning of Period (1,099) (2,158) (2,813)
Other comprehensive income 289 1,059 655
Balance at End of Period $ (810) $ (1,099) $ (2,158)
v3.24.0.1
Accumulated Other Comprehensive Loss - Reclassifications (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Interest expense $ 1,158 $ 1,332 $ 1,522
Other (expense) income, net 113 (32) 70
Assets held for sale 104 1,889  
Net loss (gain) on sale of businesses 121 (113) 0
Total before tax 10,237 991 (2,701)
Income tax expense 61 557 668
Net of tax 10,298 1,548 $ (2,033)
Decrease (Increase) in Net Income/Loss | Interest rate swap      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Interest expense   22  
Income tax expense   (5)  
Net of tax   17  
Decrease (Increase) in Net Income/Loss | Defined benefit plans      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Total before tax 67 658  
Income tax expense (16) (165)  
Net of tax 51 493  
Decrease (Increase) in Net Income/Loss | Net actuarial loss      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other (expense) income, net 82 121  
Assets held for sale (24)    
Net loss (gain) on sale of businesses (2)    
Net loss (gain) on sale of businesses, including held for sale (22)    
Decrease (Increase) in Net Income/Loss | Settlement charge      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other (expense) income, net   (2)  
Decrease (Increase) in Net Income/Loss | Prior service cost      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other (expense) income, net (15)    
Net loss (gain) on sale of businesses   539  
Decrease (Increase) in Net Income/Loss | Foreign currency adjustment      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Assets held for sale 389    
Net loss (gain) on sale of businesses (7) 112  
Net loss (gain) on sale of businesses, including held for sale 382    
Income tax expense   0  
Net of tax   $ 112  
Decrease (Increase) in Net Income/Loss | Defined benefit plans and foreign currency adjustment      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Income tax expense 0    
Net of tax $ 360    
v3.24.0.1
Labor Union Contracts (Details) - Unionized Employees Concentration Risk
12 Months Ended
Dec. 31, 2023
Total Number of Employees  
Labor Union Contracts  
Concentration risk (as a percent) 21.00%
Workforce Subject to Collective Bargaining Arrangements that Expired  
Labor Union Contracts  
Concentration risk (as a percent) 0.00%
Workforce Subject to Collective Bargaining Arrangements Expiring within One Year  
Labor Union Contracts  
Concentration risk (as a percent) 2.00%
v3.24.0.1
Dividends (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Aug. 18, 2022
May 19, 2022
Feb. 24, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dividends, Common Stock [Abstract]            
Dividend Per Share (in dollars per share) $ 0.25 $ 0.25 $ 0.25 $ 0 $ 0.75 $ 1.00
Total Amount $ 253 $ 253 $ 253      
v3.24.0.1
Subsequent Events (Details) - USD ($)
1 Months Ended 12 Months Ended
Jan. 31, 2024
Dec. 31, 2023
Jan. 22, 2024
Federal      
Subsequent Event [Line Items]      
Amount requested for income tax refund   $ 900,000,000  
Income tax refunds   $ 200,000,000  
Subsequent Event | Federal      
Subsequent Event [Line Items]      
Income tax refunds $ 729,000,000    
Subsequent Event | Transaction Support Agreement | Revolving Credit Facility      
Subsequent Event [Line Items]      
Maximum borrowing capacity     $ 1,000,000,000
Subsequent Event | Transaction Support Agreement | Senior Secured First Lien Debt | Level 3 Financing, Inc.      
Subsequent Event [Line Items]      
Debt instrument, face amount     $ 1,325,000,000