Quarterly report [Sections 13 or 15(d)]

Outstanding Loans and Leases and Allowance for Credit Losses - Payment Status of Modifications to Borrowers in Financial Difficulty (Details)

v3.25.1
Outstanding Loans and Leases and Allowance for Credit Losses - Payment Status of Modifications to Borrowers in Financial Difficulty (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Mar. 31, 2024
Consumer real estate    
Financing Receivable, Modified [Line Items]    
Total $ 239 $ 547
Consumer real estate | Current    
Financing Receivable, Modified [Line Items]    
Total 138 355
Consumer real estate | 30–89 Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 48 84
Consumer real estate | 90+ Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 53 108
Consumer real estate | Residential Mortgage    
Financing Receivable, Modified [Line Items]    
Total 208 476
Consumer real estate | Residential Mortgage | Current    
Financing Receivable, Modified [Line Items]    
Total 111 304
Consumer real estate | Residential Mortgage | 30–89 Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 46 78
Consumer real estate | Residential Mortgage | 90+ Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 51 94
Consumer real estate | Home equity    
Financing Receivable, Modified [Line Items]    
Total 31 71
Consumer real estate | Home equity | Current    
Financing Receivable, Modified [Line Items]    
Total 27 51
Consumer real estate | Home equity | 30–89 Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 2 6
Consumer real estate | Home equity | 90+ Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 2 14
Commercial    
Financing Receivable, Modified [Line Items]    
Total 4,106 3,447
Commercial | United States    
Financing Receivable, Modified [Line Items]    
Total 1,265 1,104
Commercial | Non United States    
Financing Receivable, Modified [Line Items]    
Total 64 152
Commercial | Current    
Financing Receivable, Modified [Line Items]    
Total 3,240 2,764
Commercial | Current | United States    
Financing Receivable, Modified [Line Items]    
Total 1,189 1,046
Commercial | Current | Non United States    
Financing Receivable, Modified [Line Items]    
Total 55 149
Commercial | 30–89 Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 139 326
Commercial | 30–89 Days Past Due | United States    
Financing Receivable, Modified [Line Items]    
Total 27 34
Commercial | 30–89 Days Past Due | Non United States    
Financing Receivable, Modified [Line Items]    
Total 9 0
Commercial | 90+ Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 727 357
Commercial | 90+ Days Past Due | United States    
Financing Receivable, Modified [Line Items]    
Total 49 24
Commercial | 90+ Days Past Due | Non United States    
Financing Receivable, Modified [Line Items]    
Total 0 3
Commercial | Commercial real estate    
Financing Receivable, Modified [Line Items]    
Total 2,777 2,191
Commercial | Commercial real estate | Current    
Financing Receivable, Modified [Line Items]    
Total 1,996 1,569
Commercial | Commercial real estate | 30–89 Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 103 292
Commercial | Commercial real estate | 90+ Days Past Due    
Financing Receivable, Modified [Line Items]    
Total $ 678 $ 330