v3.26.1
Investment Securities - Available-For-Sale Securities (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost $ 93,529 $ 95,223
Unrealized Gains 211 348
Unrealized Losses (4,655) (4,733)
Fair Value [1] 89,085 90,838
Portfolio level basis adjustments, Amortized Cost 3 185
Portfolio level basis adjustments, Unrealized Losses (3) (185)
U.S. Treasury and agencies    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 30,120 30,098
Unrealized Gains 23 32
Unrealized Losses (1,388) (1,360)
Fair Value 28,755 28,770
Residential mortgage-backed securities | Agency    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 41,160 39,066
Unrealized Gains 173 286
Unrealized Losses (1,466) (1,342)
Fair Value 39,867 38,010
Commercial mortgage-backed securities | Agency    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 8,406 8,703
Unrealized Gains 0 0
Unrealized Losses (984) (961)
Fair Value 7,422 7,742
Commercial mortgage-backed securities | Non-agency    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 7 7
Unrealized Gains 0 0
Unrealized Losses 0 0
Fair Value 7 7
Asset-backed securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 5,530 6,512
Unrealized Gains 6 16
Unrealized Losses (1) (1)
Fair Value 5,535 6,527
Obligations of state and political subdivisions    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 8,166 10,387
Unrealized Gains 8 11
Unrealized Losses (813) (884)
Fair Value 7,361 9,514
Other    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 137 265
Unrealized Gains 1 3
Unrealized Losses 0 0
Fair Value 138 268
Excluding portfolio level basis adjustments    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 93,526 95,038
Unrealized Gains 211 348
Unrealized Losses (4,652) (4,548)
Fair Value $ 89,085 $ 90,838
[1] Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.