EQUITY - Components of AOCI (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended		12 Months Ended
	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
AOCI
Change in OCI before reclassifications	$ (576)				$ 1,389
Amounts reclassified from AOCI	15			$ (1,336)	9
Income tax expense	118	$ (29)		362	(294)
Net Unrealized Investment Gains (Losses)
AOCI
Beginning balance	171	(272)	$ 0	1,534	430
Change in OCI before reclassifications	(576)		140	(389)	1,389
Amounts reclassified from AOCI	15		0	(1,336)	9
Income tax expense	118		(29)	362	(294)
Ending balance	$ (272)	$ 111	$ 111	$ 171	$ 1,534