INCOME TAXES - SUCCESSOR COMPANY - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current tax expense:
U.S. federal		$ 18	$ 241	$ 92
Deferred tax benefit:
U.S. federal		(52)	(1,050)	958
Income tax expense (benefit)	$ 77	(34)	1,294	(866)
Income tax expense reported in equity related to:
Other comprehensive income	$ (118)	29	(362)	294
Total income tax benefit		$ (5)	$ 932	$ (572)