Annual report pursuant to Section 13 and 15(d)

Outstanding Loans and Leases - Nonperforming, Narrative (Details)

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Outstanding Loans and Leases - Nonperforming, Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Financing Receivable, Past Due [Line Items]    
Loans and leases $ 983,426 $ 946,895
Threshold period past due for nonperforming status of financing receivables 90 days 90 days
90 Days or More Past Due    
Financing Receivable, Past Due [Line Items]    
Loans and leases $ 3,819 $ 5,474
Consumer Portfolio Segment    
Financing Receivable, Past Due [Line Items]    
Loans and leases 465,769 447,231
Consumer Portfolio Segment | 90 Days or More Past Due    
Financing Receivable, Past Due [Line Items]    
Loans and leases 3,175 $ 4,754
Consumer real estate | Chapter Seven Bankruptcy    
Financing Receivable, Past Due [Line Items]    
Loans and leases 632  
Nonperforming Financing Receivable | Consumer real estate | Chapter Seven Bankruptcy    
Financing Receivable, Past Due [Line Items]    
Loans and leases $ 101