REVENUES FROM EXTERNAL CUSTOMERS - Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Total Revenues	$ 535	$ 443	$ 396
Individual Variable Annuity Products
Disaggregation of Revenue [Line Items]
Total Revenues	5	3	2
Individual Variable Annuity Products | Premiums
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Individual Variable Annuity Products | Fees
Disaggregation of Revenue [Line Items]
Total Revenues	2	0	0
Individual Variable Annuity Products | Others
Disaggregation of Revenue [Line Items]
Total Revenues	3	3	2
Life Insurance Products
Disaggregation of Revenue [Line Items]
Total Revenues	312	287	266
Life Insurance Products | Premiums
Disaggregation of Revenue [Line Items]
Total Revenues	0	1	1
Life Insurance Products | Fees
Disaggregation of Revenue [Line Items]
Total Revenues	310	284	262
Life Insurance Products | Others
Disaggregation of Revenue [Line Items]
Total Revenues	2	2	3
Employee Benefit Products
Disaggregation of Revenue [Line Items]
Total Revenues	157	105	67
Employee Benefit Products | Premiums
Disaggregation of Revenue [Line Items]
Total Revenues	157	105	66
Employee Benefit Products | Fees
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Employee Benefit Products | Others
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	1
Other
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	2
Other | Premiums
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Other | Fees
Disaggregation of Revenue [Line Items]
Total Revenues	0	0	0
Other | Others
Disaggregation of Revenue [Line Items]
Total Revenues	$ 0	$ 0	$ 2