INVESTMENTS - Available-for-sale Securities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, amortized cost	$ 2,611		$ 2,611		$ 2,444
Fixed maturities, allowance for credit losses	0		0		0
Fixed maturities, gross unrealized gains	1		1		139
Fixed maturities, gross unrealized losses	294		294		11
Fair Value	2,318		2,318		2,572
Amortized Cost
Due in one year or less	33		33
Due in years two through five	594		594
Due in years six through ten	907		907
Due after ten years	942		942
Subtotal	2,476		2,476
Amortized Cost	2,611		2,611
Fair Value
Due in one year or less	33		33
Due in years two through five	584		584
Due in years six through ten	817		817
Due after ten years	764		764
Subtotal	2,198		2,198
Fair Value	2,318		2,318		2,572
Available For Sale Fixed Maturities Proceeds Gross Gains And Gross Losses From Sales And Other Than Temporary Impairments [Abstract]
Proceeds from sales	39	$ 11	62	$ 29
Gross gains on sales	0	0	0	0
Gross losses on sales	3	0	4	0
Net change in Allowance for Credit losses	0	0	0	0
Fixed Maturities - Credit Loss Impairments
Balance, beginning of period	2	2	2	2
Previously recognized impairments on securities that matured, paid, prepaid or sold	(2)	0	(2)	0
Recognized impairments on securities impaired to fair value this period	0	0	0	0
Credit losses recognized this period on securities for which credit losses were not previously recognized	0	0	0
Additional credit losses this period on securities previously impaired	0	0	0	0
Increases due to passage of time on previously recorded credit losses	0	0	0	0
Accretion of previously recognized impairments due to increases in expected cash flows (for OTTI securities 2019 and prior)	0	0	0	0
June 30,	0	$ 2	0	$ 2
Corporate
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, amortized cost	2,426		2,426		2,237
Fixed maturities, allowance for credit losses	0		0		0
Fixed maturities, gross unrealized gains	1		1		135
Fixed maturities, gross unrealized losses	272		272		10
Fair Value	2,155		2,155		2,362
Fair Value
Fair Value	2,155		2,155		2,362
U.S. Treasury, government and agency
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, amortized cost	14		14		66
Fixed maturities, allowance for credit losses	0		0		0
Fixed maturities, gross unrealized gains	0		0		1
Fixed maturities, gross unrealized losses	0		0		1
Fair Value	14		14		66
Fair Value
Fair Value	14		14		66
States and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, amortized cost	35		35		31
Fixed maturities, allowance for credit losses	0		0		0
Fixed maturities, gross unrealized gains	0		0		3
Fixed maturities, gross unrealized losses	5		5		0
Fair Value	30		30		34
Fair Value
Fair Value	30		30		34
Foreign governments
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, amortized cost	0		0
Fixed maturities, allowance for credit losses	0		0
Fixed maturities, gross unrealized gains	0		0
Fixed maturities, gross unrealized losses	0		0
Fair Value	0		0
Fair Value
Fair Value	0		0
Asset-backed
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, amortized cost	55		55		30
Fixed maturities, allowance for credit losses	0		0		0
Fixed maturities, gross unrealized gains	0		0		0
Fixed maturities, gross unrealized losses	5		5		0
Fair Value	50		50		30
Amortized Cost
Without single maturity date	54		54
Fair Value
Without single maturity date	51		51
Fair Value	50		50		30
Commercial mortgage-backed
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, amortized cost	81		81		80
Fixed maturities, allowance for credit losses	0		0		0
Fixed maturities, gross unrealized gains	0		0		0
Fixed maturities, gross unrealized losses	12		12		0
Fair Value	69		69		80
Amortized Cost
Without single maturity date	81		81
Fair Value
Without single maturity date	69		69
Fair Value	$ 69		$ 69		$ 80