INVESTMENTS - Fixed Maturities Available-for-sale (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months, fair value	$ 771	$ 1,507
Less than 12 months, gross unrealized losses	22	165
12 months or longer, fair value	1,601	673
12 Months or Longer, gross unrealized Losses	303	223
Fair value	2,372	2,180
Gross unrealized losses	325	388
Corporate
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months, fair value	730	1,446
Less than 12 months, gross unrealized losses	22	159
12 months or longer, fair value	1,472	590
12 Months or Longer, gross unrealized Losses	276	200
Fair value	2,202	2,036
Gross unrealized losses	298	359
U.S. Treasury, government and agency
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months, fair value	7
Less than 12 months, gross unrealized losses	0
12 months or longer, fair value	7
12 Months or Longer, gross unrealized Losses	0
Fair value	14
Gross unrealized losses	0
States and political subdivisions
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months, fair value	6	19
Less than 12 months, gross unrealized losses	0	4
12 months or longer, fair value	28	13
12 Months or Longer, gross unrealized Losses	7	5
Fair value	34	32
Gross unrealized losses	7	9
Foreign governments
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months, fair value	14
Less than 12 months, gross unrealized losses	0
12 months or longer, fair value	0
12 Months or Longer, gross unrealized Losses	0
Fair value	14
Gross unrealized losses	0
Residential mortgage-backed
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months, fair value	0	2
Less than 12 months, gross unrealized losses	0	0
12 months or longer, fair value	6	4
12 Months or Longer, gross unrealized Losses	2	2
Fair value	6	6
Gross unrealized losses	2	2
Asset-backed
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months, fair value	14	35
Less than 12 months, gross unrealized losses	0	1
12 months or longer, fair value	23	6
12 Months or Longer, gross unrealized Losses	2	1
Fair value	37	41
Gross unrealized losses	2	2
Commercial mortgage-backed
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months, fair value	0	5
Less than 12 months, gross unrealized losses	0	1
12 months or longer, fair value	65	60
12 Months or Longer, gross unrealized Losses	16	15
Fair value	65	65
Gross unrealized losses	16	$ 16
Redeemable preferred stock
Available For Sale Securities Continuous Unrealized Loss Position [Line Items]
Less than 12 months, fair value	0
Less than 12 months, gross unrealized losses	0
12 months or longer, fair value	0
12 Months or Longer, gross unrealized Losses	0
Fair value	0
Gross unrealized losses	$ 0

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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