v3.26.1
Investment Securities - Schedule of Unrealized Loss Positions on Investment Securities Held-to-Maturity (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]    
Due within one year $ 0  
Due from one to five years 1,533  
Due from five to ten years 1,253  
Due after ten years 13,767  
Total debt securities available-for-sale 16,553 $ 15,701
Mortgage- Related Securities    
Debt Securities, Available-for-sale [Line Items]    
Due within one year 0  
Due from one to five years 147  
Due from five to ten years 200  
Due after ten years 13,528  
Total debt securities available-for-sale 13,875 12,982
U.S. Government and GSE Obligations    
Debt Securities, Available-for-sale [Line Items]    
Due within one year 0  
Due from one to five years 1,258  
Due from five to ten years 1,024  
Due after ten years 0  
Total debt securities available-for-sale 2,282  
Corporate and Other Bonds    
Debt Securities, Available-for-sale [Line Items]    
Due within one year 0  
Due from one to five years 128  
Due from five to ten years 29  
Due after ten years 40  
Total debt securities available-for-sale 197  
Asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Due within one year 0  
Due from one to five years 0  
Due from five to ten years 0  
Due after ten years 199  
Total debt securities available-for-sale $ 199 $ 213