INSURANCE LIABILITIES - Variable Annuity Contracts with GMDB and GMIB Features (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Net Amount at Risk by Product and Guarantee [Line Items]
NAR, gross	$ 0
Maximum
Net Amount at Risk by Product and Guarantee [Line Items]
NAR, net of amounts reinsured	1
GMDB
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	0
Separate Accounts	377	$ 272
Net Amount At Risk By Product And Guarantee, Account Value	377
NAR, gross	56
NAR, net of amounts reinsured	$ 56
Percentage of policyholders over age 70	11.30%
GMDB | Return of Premium
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 0
Separate Accounts	290
Net Amount At Risk By Product And Guarantee, Account Value	290
NAR, gross	44
NAR, net of amounts reinsured	$ 44
Percentage of policyholders over age 70	10.30%
GMDB | Ratchet
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 0
Separate Accounts	87
Net Amount At Risk By Product And Guarantee, Account Value	87
NAR, gross	12
NAR, net of amounts reinsured	$ 12
Percentage of policyholders over age 70	15.00%
GMDB | Roll-Up
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 0
Separate Accounts	0
Net Amount At Risk By Product And Guarantee, Account Value	0
NAR, gross	0
NAR, net of amounts reinsured	$ 0
Percentage of policyholders over age 70	0.00%
GMDB | Combo
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 0
Separate Accounts	0
Net Amount At Risk By Product And Guarantee, Account Value	0
NAR, gross	0
NAR, net of amounts reinsured	$ 0
Percentage of policyholders over age 70	0.00%
GMIB
Net Amount at Risk by Product and Guarantee [Line Items]
Separate Accounts	$ 370	$ 270
Immediate Variable Annuity | GMDB
Net Amount at Risk by Product and Guarantee [Line Items]
Average attained age of policyholders (in years)	60 years 1 month 6 days
Range of contractually specified interest rates (as a percent)	2.00%
Immediate Variable Annuity | GMDB | Return of Premium
Net Amount at Risk by Product and Guarantee [Line Items]
Average attained age of policyholders (in years)	59 years 7 months 6 days
Immediate Variable Annuity | GMDB | Ratchet
Net Amount at Risk by Product and Guarantee [Line Items]
Average attained age of policyholders (in years)	62 years 1 month 6 days
Immediate Variable Annuity | GMDB | Combo
Net Amount at Risk by Product and Guarantee [Line Items]
Range of contractually specified interest rates (as a percent)	2.00%
Immediate Variable Annuity | GMIB
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 0
Separate Accounts	370
Net Amount At Risk By Product And Guarantee, Account Value	370
NAR, gross	0
NAR, net of amounts reinsured	$ 0
Average attained age of policyholders (in years)	64 years 3 months 18 days
Weighted average years remaining until annuitization (in years)	9 years 9 months 18 days
Range of contractually specified interest rates (as a percent)	2.00%
Immediate Variable Annuity | GMIB | Return of Premium
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 0
Separate Accounts	0
Net Amount At Risk By Product And Guarantee, Account Value	0
NAR, gross	0
NAR, net of amounts reinsured	0
Immediate Variable Annuity | GMIB | Ratchet
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	0
Separate Accounts	0
Net Amount At Risk By Product And Guarantee, Account Value	0
NAR, gross	0
NAR, net of amounts reinsured	0
Immediate Variable Annuity | GMIB | Roll-Up
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	0
Separate Accounts	370
Net Amount At Risk By Product And Guarantee, Account Value	370
NAR, gross	0
NAR, net of amounts reinsured	$ 0
Average attained age of policyholders (in years)	64 years 3 months 18 days
Weighted average years remaining until annuitization (in years)	9 years 9 months 18 days
Immediate Variable Annuity | GMIB | Combo
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 0
Separate Accounts	0
Net Amount At Risk By Product And Guarantee, Account Value	0
NAR, gross	0
NAR, net of amounts reinsured	$ 0
Range of contractually specified interest rates (as a percent)	2.00%