Quarterly report [Sections 13 or 15(d)]

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

v3.25.3
Outstanding Loans and Leases and Allowance for Credit Losses - Modifications to Borrowers in Financial Difficulty and Financial Effect of Modified Loans (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Consumer real estate        
Financing Receivable, Modified [Line Items]        
Total $ 43 $ 60 $ 164 $ 228
As a % of Financing Receivables 0.02% 0.02% 0.06% 0.09%
Consumer real estate | Forbearance and Other Payment Plans        
Financing Receivable, Modified [Line Items]        
Total $ 4 $ 4 $ 20 $ 41
Consumer real estate | Permanent Modification        
Financing Receivable, Modified [Line Items]        
Total 39 56 144 187
Consumer real estate | Residential Mortgage        
Financing Receivable, Modified [Line Items]        
Total $ 40 $ 52 $ 149 $ 202
As a % of Financing Receivables 0.02% 0.02% 0.06% 0.09%
Consumer real estate | Residential Mortgage | Forbearance and Other Payment Plans        
Financing Receivable, Modified [Line Items]        
Total $ 4 $ 4 $ 20 $ 41
Weighted-average duration 6 months 4 months 6 months 7 months
Consumer real estate | Residential Mortgage | Permanent Modification        
Financing Receivable, Modified [Line Items]        
Total $ 36 $ 48 $ 129 $ 161
Weighted-average duration 10 years 10 months 24 days 11 years 9 years 9 months 18 days 9 years 9 months 18 days
Weighted-average Interest Rate Reduction 1.11% 1.23% 1.20% 1.29%
Consumer real estate | Home equity        
Financing Receivable, Modified [Line Items]        
Total $ 3 $ 8 $ 15 $ 26
As a % of Financing Receivables 0.01% 0.03% 0.06% 0.10%
Consumer real estate | Home equity | Forbearance and Other Payment Plans        
Financing Receivable, Modified [Line Items]        
Total $ 0 $ 0 $ 0 $ 0
Consumer real estate | Home equity | Permanent Modification        
Financing Receivable, Modified [Line Items]        
Total $ 3 $ 8 $ 15 $ 26
Weighted-average duration 18 years 7 months 6 days 17 years 8 months 12 days 17 years 6 months 17 years 6 months
Weighted-average Interest Rate Reduction 2.05% 2.77% 2.19% 2.66%
Commercial        
Financing Receivable, Modified [Line Items]        
Total $ 1,466 $ 1,534 $ 3,247 $ 2,940
As a % of Financing Receivables 0.23% 0.27% 0.50% 0.51%
Commercial | United States        
Financing Receivable, Modified [Line Items]        
Total $ 772 $ 426 $ 1,284 $ 1,166
As a % of Financing Receivables 0.18% 0.11% 0.30% 0.31%
Commercial | Non United States        
Financing Receivable, Modified [Line Items]        
Total $ 1 $ 0 $ 13 $ 13
As a % of Financing Receivables 0.00% 0.00% 0.01% 0.01%
Commercial | Term Extension        
Financing Receivable, Modified [Line Items]        
Total $ 1,299 $ 1,253 $ 2,813 $ 2,365
Commercial | Term Extension | United States        
Financing Receivable, Modified [Line Items]        
Total 759 379 1,230 1,114
Commercial | Term Extension | Non United States        
Financing Receivable, Modified [Line Items]        
Total 1 0 4 13
Commercial | Forbearances        
Financing Receivable, Modified [Line Items]        
Total 167 281 434 539
Commercial | Forbearances | United States        
Financing Receivable, Modified [Line Items]        
Total 13 47 54 52
Commercial | Forbearances | Non United States        
Financing Receivable, Modified [Line Items]        
Total 0 0 9 0
Commercial | Interest Rate Reduction        
Financing Receivable, Modified [Line Items]        
Total 0 0 0 36
Commercial | Interest Rate Reduction | United States        
Financing Receivable, Modified [Line Items]        
Total 0 0 0 0
Commercial | Interest Rate Reduction | Non United States        
Financing Receivable, Modified [Line Items]        
Total 0 0 0 0
Commercial | Commercial real estate        
Financing Receivable, Modified [Line Items]        
Total $ 693 $ 1,108 $ 1,950 $ 1,761
As a % of Financing Receivables 1.03% 1.62% 2.91% 2.57%
Commercial | Commercial real estate | Term Extension        
Financing Receivable, Modified [Line Items]        
Total $ 539 $ 874 $ 1,579 $ 1,238
Commercial | Commercial real estate | Forbearances        
Financing Receivable, Modified [Line Items]        
Total 154 234 371 487
Commercial | Commercial real estate | Interest Rate Reduction        
Financing Receivable, Modified [Line Items]        
Total $ 0 $ 0 $ 0 $ 36