INVESTMENTS - Fixed Maturities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Net investment gains (losses) recognized during the period on securities held at the end of the period	$ (5)	$ 0
Net investment gains (losses) recognized on securities sold during the period	6	1
Unrealized and realized gains (losses) from fixed maturities	1	1
Interest and dividend income from fixed maturities	16	1
Net investment income (loss) from fixed maturities	$ 17	$ 2