v3.26.1
Derivatives (Primary Risks Managed by Derivatives) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount $ 358,769 $ 304,733
Derivative assets 12,749 6,779
Derivative liabilities 8,619 5,234
Derivatives Designated as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 4,311 4,274
Derivative assets 296 272
Derivative liabilities 68 88
Derivatives Not Designated or Not Qualifying as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 354,458 300,459
Derivative assets 12,453 6,507
Derivative liabilities 8,551 5,146
Interest rate swaps | Derivatives Not Designated or Not Qualifying as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 22,527 18,366
Derivative assets 140 152
Derivative liabilities 363 253
Interest rate swaps | Cash flow hedges: | Derivatives Designated as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 500 500
Derivative assets 5 0
Derivative liabilities 0 4
Interest rate floors | Derivatives Not Designated or Not Qualifying as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 6,000 8,000
Derivative assets 0 1
Derivative liabilities 50 48
Interest rate caps | Derivatives Not Designated or Not Qualifying as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 5,600 6,100
Derivative assets 11 5
Derivative liabilities 13 16
Interest rate options | Derivatives Not Designated or Not Qualifying as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 46,700 26,800
Derivative assets 19 12
Derivative liabilities 416 444
Interest rate forwards | Derivatives Not Designated or Not Qualifying as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 21,719 23,598
Derivative assets 35 127
Derivative liabilities 1,023 1,317
Foreign currency swaps | Derivatives Not Designated or Not Qualifying as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 699 589
Derivative assets 80 75
Derivative liabilities 3 4
Foreign currency swaps | Cash flow hedges: | Derivatives Designated as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 3,811 3,774
Derivative assets 291 272
Derivative liabilities 68 84
Foreign currency forwards | Derivatives Not Designated or Not Qualifying as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 260 420
Derivative assets 4 3
Derivative liabilities 0 0
Credit default swaps — written | Derivatives Not Designated or Not Qualifying as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 797 468
Derivative assets 16 11
Derivative liabilities 0 0
Equity futures | Derivatives Not Designated or Not Qualifying as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 993 1,414
Derivative assets 3 6
Derivative liabilities 3 4
Equity index options | Derivatives Not Designated or Not Qualifying as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 101,124 69,495
Derivative assets 8,201 4,530
Derivative liabilities 2,520 1,362
Equity total return swaps | Derivatives Not Designated or Not Qualifying as Hedging Instruments:    
Derivatives, Fair Value [Line Items]    
Derivative, Notional Amount 148,039 145,209
Derivative assets 3,944 1,585
Derivative liabilities $ 4,160 $ 1,698