POLICYHOLDER ACCOUNT BALANCES - Reconciliation of Policyholders Account Balances to Policyholders' Account Balance Liability (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Total
Liability for Future Policy Benefit, Activity [Line Items]
Policyholder account balance	$ 28,256	$ 24,963
UL
Liability for Future Policy Benefit, Activity [Line Items]
Policyholder account balance	1,180	1,186
IUL
Liability for Future Policy Benefit, Activity [Line Items]
Policyholder account balance	2,460	2,431
EI
Liability for Future Policy Benefit, Activity [Line Items]
Policyholder account balance	1,893	1,964
EG
Liability for Future Policy Benefit, Activity [Line Items]
Policyholder account balance	6,544	6,619
SCS
Liability for Future Policy Benefit, Activity [Line Items]
Policyholder account balance	44,594	40,353
Other
Liability for Future Policy Benefit, Activity [Line Items]
Policyholder account balance	(28,415)	$ (27,590)
Modco Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Policyholder account balance	$ (31,300)