v3.25.4
Loans and Related Allowance for Credit Losses, Unfunded Credit Commitments (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unfunded credit commitments $ 666,735 $ 609,565
Total Commercial [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unfunded credit commitments 461,279 414,452
Total Commercial [Member] | Commercial and industrial loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unfunded credit commitments 445,910 401,947
Total Commercial [Member] | Commercial real estate [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unfunded credit commitments 15,369 12,505
Total Consumer [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unfunded credit commitments 205,456 195,113
Total Consumer [Member] | Residential mortgage [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unfunded credit commitments 17,496 23,872
Accounts, Notes, Loans and Financing Receivable Textual [Abstract]    
Financing receivable line of credit facility remaining borrowing capacity 15,200 22,500
Total Consumer [Member] | Credit card [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unfunded credit commitments 180,563 163,256
Total Consumer [Member] | Other consumer [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unfunded credit commitments 7,397 7,985
International [Member] | Total Commercial [Member]    
Accounts, Notes, Loans and Financing Receivable Textual [Abstract]    
Letters of credit outstanding, amount $ 1,200 $ 968