Fresh Start Accounting - Impact on Accumulated Deficit (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Feb. 09, 2021
Reorganization, Chapter 11 [Line Items]
Fresh start adjustments to property and equipment	$ 10,097	$ 11,187	$ 5,670
Fresh start adjustments to other long-term assets	663	185	114
Net impact to long-term debt, net	(1,950)		(1,313)
Asset retirement obligations, net of current portion	$ (265)	$ (323)	(236)
Income tax effects on accumulated other comprehensive income			57
Reorganization, Chapter 11, Fresh-Start Adjustment
Reorganization, Chapter 11 [Line Items]
Fresh start adjustments to property and equipment			443
Fresh start adjustments to other long-term assets			(84)
Net impact to long-term debt, net			(52)
Asset retirement obligations, net of current portion			(97)
Fresh start adjustments to accumulated other comprehensive income			(9)
Total fresh start adjustments impacting reorganizations items, net			201
Income tax effects on accumulated other comprehensive income			57
Net impact to accumulated deficit			$ 258

Adjustment to Accumulated Other Comprehensive Income (Loss), Net of Tax

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Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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