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)

v3.26.1
Outstanding Loans and Leases and Allowance for Credit Losses - Payment Status of Modifications to Borrowers in Financial Difficulty (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Mar. 31, 2025
Consumer real estate    
Financing Receivable, Modified [Line Items]    
Total $ 331 $ 239
Consumer real estate | Current    
Financing Receivable, Modified [Line Items]    
Total 136 138
Consumer real estate | 30–89 Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 36 48
Consumer real estate | 90+ Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 159 53
Consumer real estate | Residential Mortgage    
Financing Receivable, Modified [Line Items]    
Total 311 208
Consumer real estate | Residential Mortgage | Current    
Financing Receivable, Modified [Line Items]    
Total 120 111
Consumer real estate | Residential Mortgage | 30–89 Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 35 46
Consumer real estate | Residential Mortgage | 90+ Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 156 51
Consumer real estate | Home equity    
Financing Receivable, Modified [Line Items]    
Total 20 31
Consumer real estate | Home equity | Current    
Financing Receivable, Modified [Line Items]    
Total 16 27
Consumer real estate | Home equity | 30–89 Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 1 2
Consumer real estate | Home equity | 90+ Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 3 2
Commercial    
Financing Receivable, Modified [Line Items]    
Total 3,920 4,106
Commercial | United States    
Financing Receivable, Modified [Line Items]    
Total 2,395 1,265
Commercial | Non United States    
Financing Receivable, Modified [Line Items]    
Total 49 64
Commercial | Current    
Financing Receivable, Modified [Line Items]    
Total 2,562 3,240
Commercial | Current | United States    
Financing Receivable, Modified [Line Items]    
Total 1,564 1,189
Commercial | Current | Non United States    
Financing Receivable, Modified [Line Items]    
Total 49 55
Commercial | 30–89 Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 658 139
Commercial | 30–89 Days Past Due | United States    
Financing Receivable, Modified [Line Items]    
Total 658 27
Commercial | 30–89 Days Past Due | Non United States    
Financing Receivable, Modified [Line Items]    
Total 0 9
Commercial | 90+ Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 700 727
Commercial | 90+ Days Past Due | United States    
Financing Receivable, Modified [Line Items]    
Total 173 49
Commercial | 90+ Days Past Due | Non United States    
Financing Receivable, Modified [Line Items]    
Total 0 0
Commercial | Commercial real estate    
Financing Receivable, Modified [Line Items]    
Total 1,476 2,777
Commercial | Commercial real estate | Current    
Financing Receivable, Modified [Line Items]    
Total 949 1,996
Commercial | Commercial real estate | 30–89 Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 0 103
Commercial | Commercial real estate | 90+ Days Past Due    
Financing Receivable, Modified [Line Items]    
Total $ 527 $ 678