INVESTMENTS - Realized Investment Gains (Losses), Net (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Jun. 30, 2021
Net Investment Income [Line Items]
Investment gains (losses), net	$ (1,298)	$ 481	$ (837)	$ 2,292
Equity securities
Net Investment Income [Line Items]
Investment gains (losses), net	(644)	(21)	(26)	1,056
Secured receivable
Net Investment Income [Line Items]
Investment gains (losses), net	(51)	0	0	0
Commercial mortgage and other loans
Net Investment Income [Line Items]
Investment gains (losses), net	0	0	(1)	0
Derivative instruments
Net Investment Income [Line Items]
Investment gains (losses), net	(584)	502	(812)	1,233
Other invested assets
Net Investment Income [Line Items]
Investment gains (losses), net	$ (19)	$ 0	$ 2	$ 4