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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 Close
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) Close
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) Close
Net increase (decrease) in cash, cash equivalents and restricted cash 941 898 (18) Close
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