Fresh Start Accounting - Reorganization Items, Net (Details) - USD ($)		1 Months Ended	3 Months Ended		5 Months Ended	6 Months Ended
	Feb. 09, 2021	Feb. 09, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2022
Reorganization, Chapter 11 [Line Items]
Total reorganization items, net		$ 5,569,000,000			$ 0	$ 0
Reorganization Adjustments
Reorganization, Chapter 11 [Line Items]
Gains on the settlement of liabilities subject to compromise	$ 6,443,000,000	6,443,000,000
Accrual for allowed claims		(1,002,000,000)
Gain on fresh start adjustments		201,000,000
Gain from release of commitment liabilities		55,000,000
Professional service provider fees and other		(60,000,000)
Success fees for professional service providers		(38,000,000)
Surrender of other receivable	18,000,000	(18,000,000)
FLLO alternative transaction fee		(12,000,000)
Total reorganization items, net	$ (6,370,000,000)	$ 5,569,000,000	$ 0	$ 0	$ 0	$ 0