v3.26.1
Loans and Related Allowance for Credit Losses, Loans 90 Days or More Past Due and Still Accruing (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, 90 days or more past due and still accruing $ 2,842 $ 3,000
Not government insured/guaranteed [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, 90 days or more past due and still accruing 1,549 1,312
Government insured or guaranteed [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, 90 days or more past due and still accruing 1,293 1,688
Total Commercial [Member] | Not government insured/guaranteed [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, 90 days or more past due and still accruing 677 371
Total Commercial [Member] | Commercial and industrial loans [Member] | Not government insured/guaranteed [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, 90 days or more past due and still accruing 189 120
Total Commercial [Member] | Commercial real estate [Member] | Not government insured/guaranteed [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, 90 days or more past due and still accruing 488 251
Total Consumer [Member] | Not government insured/guaranteed [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, 90 days or more past due and still accruing 872 941
Total Consumer [Member] | Residential mortgage [Member] | Not government insured/guaranteed [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, 90 days or more past due and still accruing 39 47
Total Consumer [Member] | Credit card [Member] | Not government insured/guaranteed [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, 90 days or more past due and still accruing 758 813
Total Consumer [Member] | Auto [Member] | Not government insured/guaranteed [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, 90 days or more past due and still accruing 52 52
Total Consumer [Member] | Other consumer [Member] | Not government insured/guaranteed [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, 90 days or more past due and still accruing $ 23 $ 29