MARKET RISK BENEFITS - Reconciles Market Risk Benefits (Details) - USD ($) $ in Millions	Sep. 30, 2023	Apr. 01, 2023	Dec. 31, 2022
Market Risk Benefit [Line Items]
MRB Asset	$ (677)		$ (478)
MRB Liability	12,995	$ 8,200	15,751
Legacy And Individual Retirement
Market Risk Benefit [Line Items]
MRB Asset	(677)		(478)
MRB Liability	12,995		15,751
Net MRB	12,318		15,273
Purchased MRB	(15,490)		(10,490)
Net amount at risk	(3,172)		4,783
GMxB Core | Individual Retirement
Market Risk Benefit [Line Items]
MRB Asset	(492)		(375)
MRB Liability	829		914
Net MRB	337		539
Purchased MRB	(1,044)		0
Net amount at risk	(707)		539
GMxB Legacy | Legacy Segment
Market Risk Benefit [Line Items]
MRB Asset	(129)		(51)
MRB Liability	12,110		14,749
Net MRB	11,981		14,698
Purchased MRB	(14,414)		(10,493)
Net amount at risk	(2,433)		4,205
Others | Individual Retirement
Market Risk Benefit [Line Items]
MRB Asset	(56)		(52)
MRB Liability	56		88
Net MRB	0		36
Purchased MRB	(32)		3
Net amount at risk	$ (32)		$ 39