Earnings Per Share - Reconciliation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	1 Months Ended	3 Months Ended		5 Months Ended	6 Months Ended
	Feb. 09, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2022
Earnings Per Share [Abstract]
Net income (loss), basic	$ 5,383	$ 1,237	$ (439)	$ (144)	$ 473
Net income (loss), diluted	$ 5,383	$ 1,237	$ (439)	$ (144)	$ 473
Weighted average common shares outstanding, basic (in shares)	9,781	126,814	97,931	97,922	123,826
Effect of potentially dilutive securities
Preferred stock (in shares)	290	0	0	0	0
Warrants (in shares)	0	22,322	0	0	21,295
Restricted stock (in shares)	0	349	0	0	368
Performance share units (in shares)	0	47	0	0	45
Weighted average common shares outstanding, diluted (in shares)	10,071	149,532	97,931	97,922	145,534
Basic (in dollars per share)	$ 550.35	$ 9.75	$ (4.48)	$ (1.47)	$ 3.82
Diluted (in dollars per share)	$ 534.51	$ 8.27	$ (4.48)	$ (1.47)	$ 3.25