v3.26.1
Loans - Wholesale Loan Portfolio, Geographic Distribution and Delinquency (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Financing Receivable, Past Due [Line Items]      
Total retained loans $ 1,463,808 $ 1,408,905 $ 1,345,473
Wholesale      
Financing Receivable, Past Due [Line Items]      
Total retained loans 846,804 792,367 $ 740,675
Wholesale | Criticized nonaccrual      
Financing Receivable, Past Due [Line Items]      
Total retained loans 4,191 4,398  
Wholesale | Current and less than 30 days past due and still accruing      
Financing Receivable, Past Due [Line Items]      
Total retained loans 839,469 784,998  
Wholesale | 30–89 days past due and still accruing      
Financing Receivable, Past Due [Line Items]      
Total retained loans 3,018 2,913  
Wholesale | 90 or more days past due and still accruing      
Financing Receivable, Past Due [Line Items]      
Total retained loans 126 58  
Wholesale | Total U.S.      
Financing Receivable, Past Due [Line Items]      
Total retained loans 658,754 626,060  
Wholesale | Total non-U.S.      
Financing Receivable, Past Due [Line Items]      
Total retained loans 188,050 166,307  
Wholesale | Secured by real estate      
Financing Receivable, Past Due [Line Items]      
Total retained loans 166,212 165,545  
Wholesale | Secured by real estate | Criticized nonaccrual      
Financing Receivable, Past Due [Line Items]      
Total retained loans 1,523 1,678  
Wholesale | Secured by real estate | Current and less than 30 days past due and still accruing      
Financing Receivable, Past Due [Line Items]      
Total retained loans 164,177 163,189  
Wholesale | Secured by real estate | 30–89 days past due and still accruing      
Financing Receivable, Past Due [Line Items]      
Total retained loans 462 636  
Wholesale | Secured by real estate | 90 or more days past due and still accruing      
Financing Receivable, Past Due [Line Items]      
Total retained loans 50 42  
Wholesale | Secured by real estate | Total U.S.      
Financing Receivable, Past Due [Line Items]      
Total retained loans 163,134 162,378  
Wholesale | Secured by real estate | Total non-U.S.      
Financing Receivable, Past Due [Line Items]      
Total retained loans 3,078 3,167  
Wholesale | Commercial and industrial      
Financing Receivable, Past Due [Line Items]      
Total retained loans 190,526 174,403  
Wholesale | Commercial and industrial | Criticized nonaccrual      
Financing Receivable, Past Due [Line Items]      
Total retained loans 2,120 1,954  
Wholesale | Commercial and industrial | Current and less than 30 days past due and still accruing      
Financing Receivable, Past Due [Line Items]      
Total retained loans 187,624 171,227  
Wholesale | Commercial and industrial | 30–89 days past due and still accruing      
Financing Receivable, Past Due [Line Items]      
Total retained loans 736 1,220  
Wholesale | Commercial and industrial | 90 or more days past due and still accruing      
Financing Receivable, Past Due [Line Items]      
Total retained loans 46 2  
Wholesale | Commercial and industrial | Total U.S.      
Financing Receivable, Past Due [Line Items]      
Total retained loans 143,179 131,945  
Wholesale | Commercial and industrial | Total non-U.S.      
Financing Receivable, Past Due [Line Items]      
Total retained loans 47,347 42,458  
Wholesale | Other      
Financing Receivable, Past Due [Line Items]      
Total retained loans 490,066 452,419  
Wholesale | Other | Criticized nonaccrual      
Financing Receivable, Past Due [Line Items]      
Total retained loans 548 766  
Wholesale | Other | Current and less than 30 days past due and still accruing      
Financing Receivable, Past Due [Line Items]      
Total retained loans 487,668 450,582  
Wholesale | Other | 30–89 days past due and still accruing      
Financing Receivable, Past Due [Line Items]      
Total retained loans 1,820 1,057  
Wholesale | Other | 90 or more days past due and still accruing      
Financing Receivable, Past Due [Line Items]      
Total retained loans 30 14  
Wholesale | Other | Total U.S.      
Financing Receivable, Past Due [Line Items]      
Total retained loans 352,441 331,737  
Wholesale | Other | Total non-U.S.      
Financing Receivable, Past Due [Line Items]      
Total retained loans $ 137,625 $ 120,682