CONSOLIDATED STATEMENTS OF CASH FLOWS	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
OPERATING ACTIVITIES
Net loss	$ (55,000,000)	$ (10,298,000,000)	$ (1,548,000,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	2,956,000,000	2,985,000,000	3,239,000,000
Net loss (gain) on sale of businesses	17,000,000	121,000,000	(113,000,000)
Loss on disposal groups held for sale	0	0	40,000,000
Goodwill impairment	0	10,693,000,000	3,271,000,000
Impairment of long-lived assets	83,000,000	27,000,000	5,000,000
Deferred income taxes	(209,000,000)	8,000,000	(1,230,000,000)
Provision for uncollectible accounts	72,000,000	100,000,000	133,000,000
Net gain on early retirement of debt	(348,000,000)	(618,000,000)	(214,000,000)
Debt modification costs and related fees	(79,000,000)	0	0
Gain on sale of investment	(205,000,000)	0	0
Unrealized loss on investments	10,000,000	97,000,000	191,000,000
Stock-based compensation	29,000,000	52,000,000	98,000,000
Changes in current assets and liabilities:
Accounts receivable	19,000,000	102,000,000	(158,000,000)
Accounts payable	(202,000,000)	(97,000,000)	98,000,000
Accrued income and other taxes	(189,000,000)	(1,185,000,000)	972,000,000
Other current assets and liabilities, net	304,000,000	(549,000,000)	(372,000,000)
Retirement benefits	(181,000,000)	(1,000,000)	46,000,000
Change in deferred revenue	1,763,000,000	230,000,000	6,000,000
Changes in other noncurrent assets and liabilities, net	655,000,000	500,000,000	252,000,000
Other, net	(107,000,000)	(7,000,000)	19,000,000
Net cash provided by operating activities	4,333,000,000	2,160,000,000	4,735,000,000
INVESTING ACTIVITIES
Capital expenditures	(3,231,000,000)	(3,100,000,000)	(3,016,000,000)
Proceeds from sale of businesses	15,000,000	1,746,000,000	8,369,000,000
Proceeds from sale of property, plant and equipment, and other assets	366,000,000	165,000,000	120,000,000
Other, net	20,000,000	(12,000,000)	3,000,000
Net cash (used in) provided by investing activities	(2,830,000,000)	(1,201,000,000)	5,476,000,000
FINANCING ACTIVITIES
Net proceeds from issuance of long-term debt	1,325,000,000	0	0
Payments of long-term debt	(2,678,000,000)	(185,000,000)	(8,093,000,000)
Net (payments of) proceeds from revolving line of credit	(200,000,000)	200,000,000	(200,000,000)
Dividends paid	(3,000,000)	(11,000,000)	(780,000,000)
Debt issuance and extinguishment costs and related fees	(283,000,000)	(14,000,000)	0
Repurchases of common stock	0	0	(200,000,000)
Other, net	(12,000,000)	(8,000,000)	(40,000,000)
Net cash used in financing activities	(1,851,000,000)	(18,000,000)	(9,313,000,000)
Net (decrease) increase in cash, cash equivalents and restricted cash	(348,000,000)	941,000,000	898,000,000
Cash, cash equivalents and restricted cash at beginning of period	2,248,000,000	1,307,000,000	409,000,000
Cash, cash equivalents and restricted cash at end of period	1,900,000,000	2,248,000,000	1,307,000,000
Supplemental cash flow information:
Income taxes refunded (paid), net	242,000,000	(1,303,000,000)	(76,000,000)
Interest paid (net of capitalized interest of $176, $111 and $66)	(1,245,000,000)	(1,138,000,000)	(1,365,000,000)
Supplemental non-cash information regarding financing activities:
Cancellation of senior unsecured notes as part of exchange offers (Note 7)	0	(1,554,000,000)	0
Issuance of senior secured notes as part of exchange offers (Note 7)	0	924,000,000	0
Cash, cash equivalents and restricted cash:
Cash and cash equivalents	1,889,000,000	2,234,000,000	1,251,000,000
Cash and cash equivalents and restricted cash included in Assets held for sale	0	0	44,000,000
Restricted cash included in Other current assets	2,000,000	4,000,000	0
Restricted cash included in Other, net noncurrent assets	9,000,000	10,000,000	12,000,000
Total	$ 1,900,000,000	$ 2,248,000,000	$ 1,307,000,000