INCOME TAXES - SUCCESSOR COMPANY - Schedule of Income before Income Tax, Domestic and Foreign (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
Income Tax Disclosure [Abstract]
Expected federal income tax benefit		$ (67)	$ 1,314	$ (847)
Valuation Allowance		37
Non-taxable investment income		5	12	11
Transaction Costs		1	10	8
Income tax expense (benefit)	$ 77	$ (34)	$ 1,294	$ (866)
Effective tax rate		10.70%	20.70%	21.50%