Derivative Instruments - Outstanding Derivative Instruments With Off-Balance-Sheet Risks (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	$ 264,184	$ 329,918
Fair Value, Asset	20,749	18,915
Fair Value, Liability	22,949	21,259
Change in foreign currency exchange rate adjustment | Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	6,714	6,222
Fair Value, Asset	432	392
Fair Value, Liability	120	132
Fair value hedges: | Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	442	442
Fair Value, Asset	1	1
Fair Value, Liability	1	2
Interest rate contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	89,700
Interest rate contracts | Non-Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	87,638	84,814
Fair Value, Asset	76	64
Fair Value, Liability	362	321
Interest rate contracts | Change in foreign currency exchange rate adjustment | Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	1,645	1,300
Fair Value, Asset	6	12
Fair Value, Liability	14	7
Interest rate contracts | Fair value hedges: | Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	417	417
Fair Value, Asset	1	1
Fair Value, Liability	0	0
Foreign currency contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	5,515
Foreign currency contracts | Non-Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	421	289
Fair Value, Asset	14	12
Fair Value, Liability	3	4
Foreign currency contracts | Change in foreign currency exchange rate adjustment | Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	5,069	4,922
Fair Value, Asset	426	380
Fair Value, Liability	106	125
Foreign currency contracts | Fair value hedges: | Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	25	25
Fair Value, Asset	0	0
Fair Value, Liability	1	2
Equity market contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	168,883
Equity market contracts | Non-Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	168,883	238,134
Fair Value, Asset	16,889	15,560
Fair Value, Liability	5,607	5,685
Credit contracts
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	86
Credit contracts | Non-Qualifying Hedges
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	86	17
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	174	202
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	416	202
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	2,747	2,482
Fair Value, Liability	$ 16,856	$ 15,115