v3.26.1
Loans and Related Allowance for Credit Losses (Commerical FDMs) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Financing Receivable [Line Items]    
Unfunded lending related commitments $ 300 $ 200
Commercial and industrial | Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified 347 486
Commercial and industrial | Payment Delay    
Financing Receivable [Line Items]    
Amortized cost basis, modified 147 87
Commercial real estate | Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified 282 355
Commercial real estate | Payment Delay    
Financing Receivable [Line Items]    
Amortized cost basis, modified 77 0
Total commercial lending    
Financing Receivable [Line Items]    
Amortized cost basis, modified $ 855 $ 1,036
% of Loan Class 0.33% 0.47%
Total commercial lending | Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified $ 545 $ 826
Total commercial lending | Payment Delay    
Financing Receivable [Line Items]    
Amortized cost basis, modified 141 74
Total commercial lending | Interest Rate Reduction and Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified 1 2
Total commercial lending | Payment Delay and Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified 83 0
Total commercial lending | Interest Rate Reduction, Payment Delay and Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified 0 13
Total commercial lending | Other    
Financing Receivable [Line Items]    
Amortized cost basis, modified 85 121
Total commercial lending | Commercial and industrial    
Financing Receivable [Line Items]    
Amortized cost basis, modified $ 528 $ 667
% of Loan Class 0.24% 0.37%
Total commercial lending | Commercial and industrial | Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified $ 308 $ 471
Total commercial lending | Commercial and industrial | Payment Delay    
Financing Receivable [Line Items]    
Amortized cost basis, modified 109 74
Total commercial lending | Commercial and industrial | Interest Rate Reduction and Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified 1 2
Total commercial lending | Commercial and industrial | Payment Delay and Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified 38 0
Total commercial lending | Commercial and industrial | Interest Rate Reduction, Payment Delay and Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified 0 13
Total commercial lending | Commercial and industrial | Other    
Financing Receivable [Line Items]    
Amortized cost basis, modified 72 107
Total commercial lending | Commercial real estate    
Financing Receivable [Line Items]    
Amortized cost basis, modified $ 327 $ 369
% of Loan Class 0.94% 1.14%
Total commercial lending | Commercial real estate | Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified $ 237 $ 355
Total commercial lending | Commercial real estate | Payment Delay    
Financing Receivable [Line Items]    
Amortized cost basis, modified 32 0
Total commercial lending | Commercial real estate | Interest Rate Reduction and Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified 0 0
Total commercial lending | Commercial real estate | Payment Delay and Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified 45 0
Total commercial lending | Commercial real estate | Interest Rate Reduction, Payment Delay and Term Extension    
Financing Receivable [Line Items]    
Amortized cost basis, modified 0 0
Total commercial lending | Commercial real estate | Other    
Financing Receivable [Line Items]    
Amortized cost basis, modified $ 13 $ 14