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	$ 5,093	$ 4,775	$ 4,657
Paid guarantee benefits	(461)	(495)	(438)
Other changes in reserve	379	813	556
Impact of the Venerable transaction	0
Balance, end of period	5,011	5,093	4,775
GMDB Ceded
Guaranteed Minimum Death Benefit Reinsurance Ceded [Roll Forward]
Balance, beginning of period	(84)	(99)	(107)
Paid guarantee benefits	113	15	14
Other changes in reserve	(90)	0	(6)
Impact of the Venerable transaction	(2,176)
Balance, end of period	(2,237)	(84)	(99)
GMIB Direct
Movement in Liabilities for Guarantees on Long-Duration Contracts, Guaranteed Benefit Liability, Gross
Balance, beginning of period	6,025	4,671	3,744
Paid guarantee benefits	(377)	(293)	(256)
Other changes in reserve	304	1,647	1,183
Impact of the Venerable transaction	0
Balance, end of period	5,952	6,025	4,671
GMIB Ceded
Guaranteed Minimum Death Benefit Reinsurance Ceded [Roll Forward]
Balance, beginning of period	(2,859)	(2,466)	(1,993)
Paid guarantee benefits	58	79	72
Other changes in reserve	735	(472)	(545)
Impact of the Venerable transaction	(2,141)
Balance, end of period	$ (4,207)	$ (2,859)	$ (2,466)