Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Millions	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 30, 2021	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2020
Consolidated Statements Of Comprehensive Income [Abstract]
Net Income (loss)	$ 4,541	$ 414	$ 441	$ (402)
Other comprehensive (loss) income, net of tax	359	60	19	(105)
Comprehensive income (loss)	$ 4,900	$ 474	$ 460	$ (507)
Financial Designation, Predecessor and Successor [Fixed List]	Predecessor	Successor	Successor	Predecessor