Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Nonperforming, Narrative (Details)

v3.20.1
Outstanding Loans and Leases - Nonperforming, Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases $ 4,056 $ 3,552
Commercial portfolio    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 1,852 1,499
Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 2,204 2,053
Consumer Portfolio Segment | Residential Mortgage    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 1,580 1,470
Consumer Portfolio Segment | Residential Mortgage | Cumulative Effect, Period of Adoption, Adjustment    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 130  
Consumer Portfolio Segment | Home equity lines of credit    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 578 536
Consumer Portfolio Segment | Home equity lines of credit | Cumulative Effect, Period of Adoption, Adjustment    
Financing Receivable, Past Due [Line Items]    
Nonperforming loans and leases 20  
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 $ 8,000 $ 7,500