Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 30, 2021	Dec. 31, 2021	Dec. 31, 2023	Dec. 31, 2022
Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 4,541	$ 414	$ 29	$ 441
Other comprehensive income, net of tax	359	60	17	19
Comprehensive income	$ 4,900	$ 474	$ 46	$ 460
Financial Designation, Predecessor and Successor [Fixed List]	Predecessor	Successor	Successor	Successor