SIGNIFICANT ACCOUNTING POLICIES - Effect of Transition Adjustment to Total Equity Resulting (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2023	Dec. 31, 2022
Liability for Future Policy Benefit, Activity [Line Items]
Liability for future policy benefits		$ 1,653	$ 669
DAC	$ 587	$ 1,212	$ 760
Effect of Modified Retrospective Application Accounting Standards Update 2018-12
Liability for Future Policy Benefit, Activity [Line Items]
Liability for future policy benefits	0
Market risk benefits	1
DAC	110
Unearned revenue liability and sales inducement assets	(37)
Total transition adjustment before taxes	74
Income taxes	(16)
Total transition adjustment (net of taxes)	58
Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Retained Earnings
Liability for Future Policy Benefit, Activity [Line Items]
Liability for future policy benefits	0
Market risk benefits	2
DAC	0
Unearned revenue liability and sales inducement assets	0
Total transition adjustment before taxes	2
Income taxes	(1)
Total transition adjustment (net of taxes)	1
Effect of Modified Retrospective Application Accounting Standards Update 2018-12 | Accumulated Other Comprehensive Income (Loss)
Liability for Future Policy Benefit, Activity [Line Items]
Liability for future policy benefits	0
Market risk benefits	(1)
DAC	110
Unearned revenue liability and sales inducement assets	(37)
Total transition adjustment before taxes	72
Income taxes	(15)
Total transition adjustment (net of taxes)	$ 57