Derivative Instruments - Outstanding Derivative Instruments With Off-Balance-Sheet Risks (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	$ 274,575	$ 324,318
Gross amount of recognized assets	15,003	12,436
Gross amount of recognized liabilities	16,875	15,006
Interest rate contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	77,741
Foreign currency contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	5,111
Equity market contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	191,666
Credit contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	57
Qualifying Hedges | Cash flow hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	5,968	6,360
Gross amount of recognized assets	712	604
Gross amount of recognized liabilities	60	125
Qualifying Hedges | Cash flow hedges | Interest rate contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	1,230	1,698
Gross amount of recognized assets	156	181
Gross amount of recognized liabilities	16	47
Qualifying Hedges | Cash flow hedges | Foreign currency contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	4,738	4,662
Gross amount of recognized assets	556	423
Gross amount of recognized liabilities	44	78
Qualifying Hedges | Fair value hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	1,091	1,106
Gross amount of recognized assets	11	1
Gross amount of recognized liabilities	16	40
Qualifying Hedges | Fair value hedges | Interest rate contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	1,066	1,081
Gross amount of recognized assets	10	1
Gross amount of recognized liabilities	16	39
Qualifying Hedges | Fair value hedges | Foreign currency contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	25	25
Gross amount of recognized assets	1	0
Gross amount of recognized liabilities	0	1
Non-Qualifying Hedges | Interest rate contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	75,445	90,829
Gross amount of recognized assets	63	636
Gross amount of recognized liabilities	439	979
Non-Qualifying Hedges | Foreign currency contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	348	306
Gross amount of recognized assets	30	11
Gross amount of recognized liabilities	2	6
Non-Qualifying Hedges | Equity market contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	191,666	225,626
Gross amount of recognized assets	13,072	10,244
Gross amount of recognized liabilities	3,879	4,227
Non-Qualifying Hedges | Credit contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	57	91
Gross amount of recognized assets	0	0
Gross amount of recognized liabilities	0	0
Non-Qualifying Hedges | Reinsurance-related
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	0	0
Gross amount of recognized assets	0	0
Gross amount of recognized liabilities	30	552
Non-Qualifying Hedges | RILA, fixed indexed annuity and IUL contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	0	0
Gross amount of recognized assets	1,115	940
Gross amount of recognized liabilities	$ 12,449	$ 9,077