LIABILITIES FOR FUTURE POLICYHOLDER BENEFITS - Policyholder Account Balance And Liability For Unpaid Claims And Claims Adjustment Expense (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Liability for Future Policy Benefit, Activity [Line Items]
Net liability for additional liability	$ 707	$ 669
Other	230	220
Future policyholder benefits total	292	278
Other policyholder liabilities	415	391
Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Net liability for additional liability	$ 62	$ 58