INSURANCE LIABILITIES - Variable Annuity Contracts with GMDB and GMIB Features and Buybacks (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
GMDB
Net Amount at Risk by Product and Guarantee [Line Items]
Separate Accounts	$ 99,164	$ 107,577
GMIB
Net Amount at Risk by Product and Guarantee [Line Items]
Separate Accounts	58,026	$ 63,276
Direct Variable Annuity | GMDB
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	16,687
Separate Accounts	99,164
Total Account Values	115,851
NAR, gross	20,066
NAR, net of amounts reinsured	$ 10,882
Average attained age of contract holders (in years)	55 years 8 months 12 days
Percentage of policyholders over age 70	20.80%
Direct Variable Annuity | GMDB | Minimum
Net Amount at Risk by Product and Guarantee [Line Items]
Range of contractually specified interest rates (as a percent)	3.00%
Direct Variable Annuity | GMDB | Maximum
Net Amount at Risk by Product and Guarantee [Line Items]
Range of contractually specified interest rates (as a percent)	6.50%
Direct Variable Annuity | GMDB | Return of Premium
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 16,395
Separate Accounts	55,562
Total Account Values	71,957
NAR, gross	175
NAR, net of amounts reinsured	$ 170
Average attained age of contract holders (in years)	51 years 6 months
Percentage of policyholders over age 70	11.80%
Direct Variable Annuity | GMDB | Ratchet
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 86
Separate Accounts	9,058
Total Account Values	9,144
NAR, gross	325
NAR, net of amounts reinsured	$ 292
Average attained age of contract holders (in years)	69 years 2 months 12 days
Percentage of policyholders over age 70	51.80%
Direct Variable Annuity | GMDB | Roll-Up
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 50
Separate Accounts	3,107
Total Account Values	3,157
NAR, gross	1,487
NAR, net of amounts reinsured	$ 1,057
Average attained age of contract holders (in years)	75 years 7 months 6 days
Percentage of policyholders over age 70	73.10%
Direct Variable Annuity | GMDB | Roll-Up | Minimum
Net Amount at Risk by Product and Guarantee [Line Items]
Range of contractually specified interest rates (as a percent)	3.00%
Direct Variable Annuity | GMDB | Roll-Up | Maximum
Net Amount at Risk by Product and Guarantee [Line Items]
Range of contractually specified interest rates (as a percent)	6.00%
Direct Variable Annuity | GMDB | Combo
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 156
Separate Accounts	31,437
Total Account Values	31,593
NAR, gross	18,079
NAR, net of amounts reinsured	$ 9,363
Average attained age of contract holders (in years)	71 years 3 months 18 days
Percentage of policyholders over age 70	57.90%
Direct Variable Annuity | GMDB | Combo | Minimum
Net Amount at Risk by Product and Guarantee [Line Items]
Range of contractually specified interest rates (as a percent)	3.00%
Direct Variable Annuity | GMDB | Combo | Maximum
Net Amount at Risk by Product and Guarantee [Line Items]
Range of contractually specified interest rates (as a percent)	6.50%
Direct Variable Annuity | GMIB
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 216
Separate Accounts	58,026
Total Account Values	58,242
NAR, gross	9,259
NAR, net of amounts reinsured	$ 3,727
Average attained age of contract holders (in years)	68 years 9 months 18 days
Weighted average years remaining until annuitization (in years)	2 years 7 months 6 days
Direct Variable Annuity | GMIB | Minimum
Net Amount at Risk by Product and Guarantee [Line Items]
Range of contractually specified interest rates (as a percent)	3.00%
Direct Variable Annuity | GMIB | Maximum
Net Amount at Risk by Product and Guarantee [Line Items]
Range of contractually specified interest rates (as a percent)	6.50%
Direct Variable Annuity | GMIB | Return of Premium
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 0
Separate Accounts	0
Total Account Values	0
NAR, gross	0
NAR, net of amounts reinsured	0
Direct Variable Annuity | GMIB | Ratchet
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	0
Separate Accounts	0
Total Account Values	0
NAR, gross	0
NAR, net of amounts reinsured	0
Direct Variable Annuity | GMIB | Roll-Up
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	15
Separate Accounts	24,565
Total Account Values	24,580
NAR, gross	586
NAR, net of amounts reinsured	$ 188
Average attained age of contract holders (in years)	65 years 2 months 12 days
Weighted average years remaining until annuitization (in years)	5 years 10 months 24 days
Direct Variable Annuity | GMIB | Roll-Up | Minimum
Net Amount at Risk by Product and Guarantee [Line Items]
Range of contractually specified interest rates (as a percent)	3.00%
Direct Variable Annuity | GMIB | Roll-Up | Maximum
Net Amount at Risk by Product and Guarantee [Line Items]
Range of contractually specified interest rates (as a percent)	6.00%
Direct Variable Annuity | GMIB | Combo
Net Amount at Risk by Product and Guarantee [Line Items]
General Account	$ 201
Separate Accounts	33,461
Total Account Values	33,662
NAR, gross	8,673
NAR, net of amounts reinsured	$ 3,539
Average attained age of contract holders (in years)	71 years
Weighted average years remaining until annuitization (in years)	7 months 6 days
Direct Variable Annuity | GMIB | Combo | Minimum
Net Amount at Risk by Product and Guarantee [Line Items]
Range of contractually specified interest rates (as a percent)	3.00%
Direct Variable Annuity | GMIB | Combo | Maximum
Net Amount at Risk by Product and Guarantee [Line Items]
Range of contractually specified interest rates (as a percent)	6.50%