INSURANCE LIABILITIES - Rollforward of Liability and Reinsurance Ceded (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
GMDB Direct
Movement in Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross
Balance, beginning of period	$ 4	$ 5	$ 5
Paid guarantee benefits	0	0	0
Other changes in reserve	1	(1)	0
Balance, end of period	5	4	5
GMDB Ceded
Guaranteed Minimum Death Benefit Reinsurance Ceded [Roll Forward]
Balance, beginning of period	(4)	(5)	(5)
Paid guarantee benefits	0	0	0
Other changes in reserve	(1)	1	0
Balance, end of period	(5)	(4)	(5)
GMIB Direct
Movement in Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross
Balance, beginning of period	1	2	2
Paid guarantee benefits	0	0	0
Other changes in reserve	0	(1)	0
Balance, end of period	1	1	2
GMIB Ceded
Guaranteed Minimum Death Benefit Reinsurance Ceded [Roll Forward]
Balance, beginning of period	(1)	(2)	(2)
Paid guarantee benefits	0	0	0
Other changes in reserve	0	1	0
Balance, end of period	$ (1)	$ (1)	$ (2)