Fresh Start Accounting - Reorganization Items, Net (Details) - USD ($) $ in Millions		1 Months Ended	2 Months Ended	3 Months Ended
Feb. 09, 2021	Feb. 09, 2021	Mar. 31, 2021	Mar. 31, 2022
Reorganization, Chapter 11 [Line Items]
Total reorganization items, net		$ 5,569	$ 0	$ 0
Reorganization Adjustments
Reorganization, Chapter 11 [Line Items]
Gains on the settlement of liabilities subject to compromise		6,443	0	0
Accrual for allowed claims		(1,002)	0	0
Gain on fresh start adjustments		201	0	0
Gain from release of commitment liabilities		55	0	0
Professional service provider fees and other		(60)	0	0
Success fees for professional service providers		(38)	0	0
Surrender of other receivable	$ (18)	(18)	0	0
FLLO alternative transaction fee		(12)	0	0
Total reorganization items, net	$ (6,370)	$ 5,569	$ 0	$ 0

Debtor Reorganization Items, FLLO Alternative Transaction Fee

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Debtor Reorganization Items, Gain (Loss) on Fresh Start Adjustments

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Debtor Reorganization Items, Success Legal and Advisory Professional Fees

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Debtor Reorganization Items, Surrender Of Other receivable

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Amount of net gain (loss) on settlement of other claims for entities in bankruptcy, reported as a reorganization item.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of reorganization items related to legal and advisory professional fees related to entities in bankruptcy.

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Amount of gain (loss) on rejection of leases and other executory contracts, reported as a reorganization item.

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Amount of expense for claims expected to be incurred by an entity in reorganization.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Total amount of reorganization items.

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