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)

v3.26.1
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
Mar. 31, 2026
Mar. 31, 2025
Consumer real estate    
Financing Receivable, Modified [Line Items]    
Total $ 161 $ 57
As a % of Financing Receivables 0.06% 0.02%
Consumer real estate | Forbearance and Other Payment Plans    
Financing Receivable, Modified [Line Items]    
Total $ 120 $ 8
Consumer real estate | Permanent Modification    
Financing Receivable, Modified [Line Items]    
Total 41 49
Consumer real estate | Residential Mortgage    
Financing Receivable, Modified [Line Items]    
Total $ 154 $ 50
As a % of Financing Receivables 0.07% 0.02%
Consumer real estate | Residential Mortgage | Forbearance and Other Payment Plans    
Financing Receivable, Modified [Line Items]    
Total $ 117 $ 8
Weighted-average duration 11 months 4 months
Consumer real estate | Residential Mortgage | Permanent Modification    
Financing Receivable, Modified [Line Items]    
Total $ 37 $ 42
Weighted-average duration 10 years 4 months 24 days 9 years 9 months 18 days
Weighted-average Interest Rate Reduction 1.62% 1.41%
Consumer real estate | Home equity    
Financing Receivable, Modified [Line Items]    
Total $ 7 $ 7
As a % of Financing Receivables 0.03% 0.03%
Consumer real estate | Home equity | Forbearance and Other Payment Plans    
Financing Receivable, Modified [Line Items]    
Total $ 3 $ 0
Consumer real estate | Home equity | Permanent Modification    
Financing Receivable, Modified [Line Items]    
Total $ 4 $ 7
Weighted-average duration 7 years 2 months 12 days 18 years 4 months 24 days
Weighted-average Interest Rate Reduction 3.69% 1.99%
Commercial    
Financing Receivable, Modified [Line Items]    
Total $ 1,284 $ 1,383
As a % of Financing Receivables 0.19% 0.23%
Commercial | United States    
Financing Receivable, Modified [Line Items]    
Total $ 829 $ 302
As a % of Financing Receivables 0.18% 0.08%
Commercial | Non United States    
Financing Receivable, Modified [Line Items]    
Total $ 13 $ 24
As a % of Financing Receivables 0.01% 0.02%
Commercial | Term Extension    
Financing Receivable, Modified [Line Items]    
Total $ 920 $ 920
Commercial | Term Extension | United States    
Financing Receivable, Modified [Line Items]    
Total 785 269
Commercial | Term Extension | Non United States    
Financing Receivable, Modified [Line Items]    
Total 13 15
Commercial | Forbearances    
Financing Receivable, Modified [Line Items]    
Total 364 463
Commercial | Forbearances | United States    
Financing Receivable, Modified [Line Items]    
Total 44 33
Commercial | Forbearances | Non United States    
Financing Receivable, Modified [Line Items]    
Total 0 9
Commercial | Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Total 0 0
Commercial | Interest Rate Reduction | United States    
Financing Receivable, Modified [Line Items]    
Total 0 0
Commercial | Interest Rate Reduction | Non United States    
Financing Receivable, Modified [Line Items]    
Total 0 0
Commercial | Commercial real estate    
Financing Receivable, Modified [Line Items]    
Total $ 442 $ 1,057
As a % of Financing Receivables 0.63% 1.61%
Commercial | Commercial real estate | Term Extension    
Financing Receivable, Modified [Line Items]    
Total $ 122 $ 636
Commercial | Commercial real estate | Forbearances    
Financing Receivable, Modified [Line Items]    
Total 320 421
Commercial | Commercial real estate | Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Total $ 0 $ 0