Derivative Instruments - Outstanding Derivative Instruments With Off-Balance-Sheet Risks (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	$ 257,542	$ 274,575
Gross amount of recognized assets	12,340	15,003
Gross amount of recognized liabilities	14,441	16,875
Interest rate contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	83,705
Foreign currency contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	5,162
Equity market contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	168,433
Credit contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	242
Qualifying Hedges | Cash flow hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	6,080	5,968
Gross amount of recognized assets	706	712
Gross amount of recognized liabilities	50	60
Qualifying Hedges | Cash flow hedges | Interest rate contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	1,275	1,230
Gross amount of recognized assets	154	156
Gross amount of recognized liabilities	6	16
Qualifying Hedges | Cash flow hedges | Foreign currency contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	4,805	4,738
Gross amount of recognized assets	552	556
Gross amount of recognized liabilities	44	44
Qualifying Hedges | Fair value hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	1,091	1,091
Gross amount of recognized assets	2	11
Gross amount of recognized liabilities	29	16
Qualifying Hedges | Fair value hedges | Interest rate contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	1,066	1,066
Gross amount of recognized assets	2	10
Gross amount of recognized liabilities	29	16
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	0	1
Gross amount of recognized liabilities	0	0
Non-Qualifying Hedges | Interest rate contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	81,364	75,445
Gross amount of recognized assets	40	63
Gross amount of recognized liabilities	334	439
Non-Qualifying Hedges | Foreign currency contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	332	348
Gross amount of recognized assets	23	30
Gross amount of recognized liabilities	2	2
Non-Qualifying Hedges | Equity market contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	168,433	191,666
Gross amount of recognized assets	10,477	13,072
Gross amount of recognized liabilities	3,081	3,879
Non-Qualifying Hedges | Credit contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	242	57
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	138	30
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	1,092	1,115
Gross amount of recognized liabilities	$ 10,807	$ 12,449