POLICYHOLDER ACCOUNT BALANCES - Reconciliation of Policyholders Account Balances to Policyholders' Account Balance Liability (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Liability for Future Policy Benefit, Activity [Line Items]
Policyholders’ account balance reconciliation
Balance (exclusive of Funding Agreements)	115,115	115,437
Funding Agreements	17,547	17,996
Balance, end of period	132,662	133,433
Retirement \| SCS
Liability for Future Policy Benefit, Activity [Line Items]
Policyholders’ account balance reconciliation	80,254	80,752	$ 64,896	$ 65,267
Retirement \| EQUI-VEST Individual
Liability for Future Policy Benefit, Activity [Line Items]
Policyholders’ account balance reconciliation	1,785	1,819	1,988	2,037
Retirement \| EQUI-VEST Group
Liability for Future Policy Benefit, Activity [Line Items]
Policyholders’ account balance reconciliation	10,882	10,968	11,121	11,158
Retirement \| Momentum
Liability for Future Policy Benefit, Activity [Line Items]
Policyholders’ account balance reconciliation	457	489	510	527
Retirement \| GMxB Core
Liability for Future Policy Benefit, Activity [Line Items]
Policyholders’ account balance reconciliation	(64)	(52)	(18)	(4)
Corporate & Other \| UL
Liability for Future Policy Benefit, Activity [Line Items]
Policyholders’ account balance reconciliation	4,894	4,924	5,015	5,065
Corporate & Other \| VUL
Liability for Future Policy Benefit, Activity [Line Items]
Policyholders’ account balance reconciliation	5,214	5,165	4,990	4,982
Corporate & Other \| GMxB Legacy
Liability for Future Policy Benefit, Activity [Line Items]
Policyholders’ account balance reconciliation	222	222	$ 260	$ 226
Other
Liability for Future Policy Benefit, Activity [Line Items]
Policyholders’ account balance reconciliation	$ 11,471	$ 11,150