Derivative and Hedging Activities - Cash Flow Hedges Components of AOCI (Details) - USD ($) $ in Millions	1 Months Ended	11 Months Ended	12 Months Ended
	Feb. 09, 2021	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, after tax, beginning of period		$ 0
Losses reclassified to income, after tax	$ 3	0	$ 0	$ 33
AOCI, after tax, end of period	0
Cash flow hedging
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI, before tax, beginning of period	(12)	0		(45)
AOCI, after tax, beginning of period	45	$ 0		12
Losses reclassified to income, before tax	3			33
Losses reclassified to income, after tax	3			33
Fresh start adjustments, before tax	9			0
Fresh start adjustments, after tax	9			0
Elimination of tax effects, before tax	0			0
Elimination of tax effects, after tax	(57)			0
AOCI, before tax, end of period	0			(12)
AOCI, after tax, end of period	$ 0			$ 45