INVESTMENTS - Fixed Maturities Available-for-sale (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months, fair value	$ 288	$ 52
Less than 12 months, gross unrealized losses	5	1
12 months or longer, fair value	113	3
12 Months or Longer, gross unrealized Losses	6	1
Fair value	401	55
Gross unrealized losses	11	2
Corporate
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months, fair value	243	52
Less than 12 months, gross unrealized losses	4	1
12 months or longer, fair value	111	3
12 Months or Longer, gross unrealized Losses	6	1
Fair value	354	55
Gross unrealized losses	10	$ 2
U.S. government, agencies and authorities
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months, fair value	45
Less than 12 months, gross unrealized losses	1
12 months or longer, fair value	2
12 Months or Longer, gross unrealized Losses	0
Fair value	47
Gross unrealized losses	$ 1