v3.25.2
Investment Debt Securities (Contractual Maturities) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Available-for-sale, Amortized Cost Basis    
Due in one year or less $ 498 $ 491
Due after one year through five years 824 630
Due after five years through ten years 347 493
Due after ten years 1,367 1,127
MBS and FFELP ABS 23,977 21,946
Amortized Cost Basis 27,013 24,687
Available-for-sale, Net Carrying Amount and Fair Value    
Due in one year or less 497 490
Due after one year through five years 814 628
Due after five years through ten years 351 471
Due after ten years 1,302 1,027
MBS and FFELP ABS 24,003 22,038
Net Carrying Amount and Fair Value 26,967 24,654
Held-to-maturity, Amortized Cost and Net Carrying Amount    
Due in one year or less 1,034 1,362
Due after one year through five years 48 35
Due after five years through ten years 158 141
Due after ten years 19 0
MBS and FFELP ABS 112 128
Amortized Cost and Net Carrying Amount 1,371 1,666
Held-to-maturity, Fair Value    
Due in one year or less 1,035 1,363
Due after one year through five years 47 34
Due after five years through ten years 157 136
Due after ten years 19 0
MBS and FFELP ABS 114 129
Fair Value $ 1,372 $ 1,662