REINSURANCE - Effect of Reinsurance (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reinsurance Disclosures [Abstract]
Direct charges and fee income	$ 383	$ 266	$ 261
Reinsurance assumed - Equitable Financial	1,015	0	0
Reinsurance ceded	(111)	(37)	(57)
Policy charges and fee income	1,287	229	204
Direct premiums	353	272	201
Reinsurance assumed - Equitable Financial	174	0	0
Reinsurance ceded	(59)	(49)	(44)
Premiums	468	223	157
Direct policyholders’ benefits	460	419	415
Reinsurance assumed - Equitable Financial	528	0	0
Reinsurance ceded	(108)	(119)	(160)
Policyholders’ benefits	880	300	255
Direct interest credited to policyholders’ account balances	250	106	139
Reinsurance assumed - Equitable Financial	471	0	0
Reinsurance ceded	(33)	(16)	(57)
Interest credited to policyholders’ account balances	$ 688	$ 90	$ 82