INVESTMENTS - Investment Gains (Losses), Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net Investment Income [Line Items]
Investment gains (losses), net	$ 853	$ 787	$ 206
Fixed maturities
Net Investment Income [Line Items]
Investment gains (losses), net	834	801	203
Mortgage loans on real estate
Net Investment Income [Line Items]
Investment gains (losses), net	20	(45)	(1)
Other equity investments
Net Investment Income [Line Items]
Investment gains (losses), net	0	30	3
Other
Net Investment Income [Line Items]
Investment gains (losses), net	$ (1)	$ 1	$ 1