MARKET RISK BENEFITS - Reconciles Market Risk Benefits (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Market Risk Benefit [Line Items]
MRB Asset	$ (763)	$ (574)
MRB Liability	12,568	14,570
Legacy And Individual Retirement
Market Risk Benefit [Line Items]
MRB Asset	(763)	(574)
MRB Liability	12,568	14,570
Net MRB	11,805	13,996
Purchased MRB	(14,185)	(16,729)
Net amount at risk	(2,380)	(2,733)
GMxB Core | Individual Retirement
Market Risk Benefit [Line Items]
MRB Asset	(497)	(410)
MRB Liability	916	988
Net MRB	419	578
Purchased MRB	(932)	(1,180)
Net amount at risk	(513)	(602)
GMxB Legacy | Legacy Segment
Market Risk Benefit [Line Items]
MRB Asset	(180)	(103)
MRB Liability	11,597	13,513
Net MRB	11,417	13,410
Purchased MRB	(13,254)	(15,519)
Net amount at risk	(1,837)	(2,109)
Others | Individual Retirement
Market Risk Benefit [Line Items]
MRB Asset	(86)	(61)
MRB Liability	55	69
Net MRB	(31)	8
Purchased MRB	1	(30)
Net amount at risk	$ (30)	$ (22)