POLICYHOLDER ACCOUNT BALANCES - Reconciliation of Separate Account Liabilities to Separate Account Liability balance (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	$ 130,470	$ 136,544
Retirement \| GMxB Core
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	29,457	30,720	$ 29,201	$ 30,411
Retirement \| EQUI-VEST Individual
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	4,516	4,836	4,444	4,782
Retirement \| Investment Edge
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	5,186	5,312	4,720	4,885
Retirement \| EQUI-VEST Group
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	32,461	33,714	29,229	30,546
Retirement \| Momentum
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	4,945	5,174	4,637	4,813
Corporate & Other \| VUL
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	19,625	20,383	17,464	18,176
Corporate & Other \| GMxB Legacy
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	26,275	28,209	$ 27,408	$ 33,199
Other
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	$ 8,005	$ 8,196