Derivative Instruments - Outstanding Derivative Instruments With Off-Balance-Sheet Risks (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	$ 334,555	$ 322,099
Fair Value, Asset	18,069	12,965
Fair Value, Liability	18,671	14,454
Change in foreign currency exchange rate adjustment | Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	5,394	5,147
Fair Value, Asset	513	434
Fair Value, Liability	66	125
Fair value hedges: | Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	469	475
Fair Value, Asset	5	1
Fair Value, Liability	19	40
Interest rate contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	74,617
Interest rate contracts | Non-Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	73,628	90,829
Fair Value, Asset	813	636
Fair Value, Liability	1,173	979
Interest rate contracts | Change in foreign currency exchange rate adjustment | Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	545	485
Fair Value, Asset	2	11
Fair Value, Liability	17	47
Interest rate contracts | Fair value hedges: | Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	444	450
Fair Value, Asset	4	1
Fair Value, Liability	19	39
Foreign currency contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	5,235
Foreign currency contracts | Non-Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	361	306
Fair Value, Asset	15	11
Fair Value, Liability	1	6
Foreign currency contracts | Change in foreign currency exchange rate adjustment | Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	4,849	4,662
Fair Value, Asset	511	423
Fair Value, Liability	49	78
Foreign currency contracts | Fair value hedges: | Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	25	25
Fair Value, Asset	1	0
Fair Value, Liability	0	1
Equity market contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	254,659
Equity market contracts | Non-Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	254,659	225,251
Fair Value, Asset	14,180	10,244
Fair Value, Liability	5,995	4,227
Credit contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	44
Credit contracts | Non-Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	44	91
Fair Value, Asset	0	0
Fair Value, Liability	0	0
LPR ceded derivative | Non-Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	0	0
Fair Value, Asset	202	206
Fair Value, Liability	0	0
Reinsurance-related | Non-Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	0	0
Fair Value, Asset	585	493
Fair Value, Liability	0	0
RILA, fixed indexed annuity and IUL contracts | Non-Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	0	0
Fair Value, Asset	1,756	940
Fair Value, Liability	$ 11,417	$ 9,077