CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Assets
Cash and cash equivalents	$ 499	$ 620
Accounts receivable, net of allowance of $2 at September 30, 2026 and December 31, 2025	645	540
Materials and supplies, net of allowance of $149 and $140 at September 30, 2026 and December 31, 2025, respectively	371	378
Assets held for sale		24
Restricted cash and cash equivalents	285	377
Other current assets	189	142
Total current assets	1,989	2,081
Property and equipment	17,515	17,451
Less accumulated depreciation	(5,277)	(4,874)
Property and equipment, net	12,238	12,577
Deferred tax assets, net	62	61
Other assets	779	923
Total assets	15,068	15,642
Liabilities and equity
Accounts payable	269	242
Accrued income taxes	6	22
Debt due within one year	460	445
Other current liabilities	568	627
Total current liabilities	1,303	1,336
Long-term debt	4,558	5,212
Deferred tax liabilities, net	254	404
Other long-term liabilities	499	582
Total long-term liabilities	5,311	6,198
Commitments and contingencies
Shares, $0.10 par value, 1,445 authorized, 141 conditionally authorized, 1,304 issued and 1,117 outstanding at September 30, 2026 and 1,204 authorized, 141 conditionally authorized, 1,204 issued and 1,102 outstanding at December 31, 2025	112	110
Additional paid-in capital	15,623	15,604
Accumulated deficit	(7,193)	(7,460)
Accumulated other comprehensive loss	(88)	(146)
Total equity	8,454	8,108
Total liabilities and equity	$ 15,068	$ 15,642

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations.