Quarterly report [Sections 13 or 15(d)]

Outstanding Loans and Leases and Allowance for Credit Losses - Nonperforming, Narrative (Details)

v3.26.1
Outstanding Loans and Leases and Allowance for Credit Losses - Nonperforming, Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases $ 5,831 $ 5,804
Residential Mortgage    
Financing Receivable, Past Due [Line Items]    
Increase in nonaccrual loans (104)  
Commercial    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 3,151 3,228
Consumer    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 2,680 2,576
Consumer | Residential Mortgage    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 2,103 2,008
Federal National Mortgage Association Certificates and Obligations (FNMA) and Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) | Residential Mortgage    
Financing Receivable, Past Due [Line Items]    
Long-term credit protection agreements, amount covered $ 7,100 $ 7,200