LIABILITIES FOR FUTURE POLICYHOLDER BENEFITS - Schedule of Liability for Future Policy Benefits, Revenue and Interest Accretion (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premium	$ 85	$ 0	$ 0
Interest Accretion	7	0	0
Payout-Legacy
Liability for Future Policy Benefit, Activity [Line Items]
Gross Premium	85	0	0
Interest Accretion	$ 7	$ 0	$ 0