POLICYHOLDER ACCOUNT BALANCES - Reconciliation of Separate Account Liabilities to Separate Account Liability balance (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	$ 131,683	$ 134,717
Protection Solutions \| Variable Universal Life
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	18,968	18,176	$ 17,212	$ 15,821
Legacy Segment \| GMxB Legacy
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	28,275	33,199	33,966	33,794
Individual Retirement \| GMxB Core
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	30,057	30,411	30,476	29,829
Individual Retirement \| EQUI-VEST Individual
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	4,756	4,782	4,785	4,582
Individual Retirement \| Investment Edge
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	5,072	4,885	4,588	4,275
Group Retirement \| EQUI-VEST Group
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	31,714	30,546	29,225	26,959
Group Retirement \| Momentum
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	5,008	4,813	$ 4,702	$ 4,421
Other
Liability for Future Policy Benefit, Activity [Line Items]
Separate Accounts liabilities	$ 7,833	$ 7,905