CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
OPERATING ACTIVITIES
Net (loss) income	$ (201)	$ 57
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	713	748
Net loss on sale of business	0	22
Deferred income taxes	(168)	8
Provision for uncollectible accounts	13	23
Net loss (gain) on early retirement of debt	35	(275)
Debt modification costs and related fees	0	(79)
Unrealized gain on investments	0	(20)
Stock-based compensation	10	14
Changes in current assets and liabilities:
Accounts receivable	38	(25)
Accounts payable	101	(7)
Accrued income and other taxes	133	772
Other current assets and liabilities, net	(138)	(261)
Retirement benefits	(2)	(13)
Change in deferred revenue	493	52
Changes in other assets and liabilities, net	30	146
Other, net	38	(60)
Net cash provided by operating activities	1,095	1,102
INVESTING ACTIVITIES
Capital expenditures	(791)	(713)
Proceeds from sale of property, plant and equipment, and other assets	14	12
Other, net	8	3
Net cash used in investing activities	(769)	(698)
FINANCING ACTIVITIES
Net proceeds from issuance of long-term debt	2,279	1,325
Payments of long-term debt	(2,502)	(1,902)
Net payments of revolving line of credit	0	(200)
Dividends paid	(1)	(3)
Debt issuance and extinguishment costs and related fees	(80)	(278)
Other, net	(10)	(2)
Net cash used in financing activities	(314)	(1,060)
Net increase (decrease) in cash, cash equivalents and restricted cash	12	(656)
Cash, cash equivalents and restricted cash at beginning of period	1,900	2,248
Cash, cash equivalents and restricted cash at end of period	1,912	1,592
Supplemental cash flow information:
Income taxes (paid) refunded, net	(1)	724
Interest paid (net of capitalized interest of $37 and $39)	(280)	(339)
Supplemental noncash information regarding financing activities:
Cancellation of term loans as part of refinancing (Note 4)	(121)	0
Issuance of term loan as part of refinancing (Note 4)	121	0
Cash, cash equivalents and restricted cash:
Cash and cash equivalents	1,900	1,580
Restricted cash included in Other current assets, net	2	2
Restricted cash included in Other assets, net	10	10
Total	$ 1,912	$ 1,592