Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Consumer Real Estate - TDRs Entering Payment Default That Were Modified During the Preceding 12 Months (Details)

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Outstanding Loans and Leases - Consumer Real Estate - TDRs Entering Payment Default That Were Modified During the Preceding 12 Months (Details) - Consumer real estate
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2019
USD ($)
payment
Jun. 30, 2018
USD ($)
Financing Receivable, Modifications [Line Items]        
Number of missing payments causing default | payment     3  
Troubled debt restructurings entering payment default that were modified during the preceding twelve months $ 46 $ 105 $ 107 $ 217
Modifications under government programs        
Financing Receivable, Modifications [Line Items]        
Troubled debt restructurings entering payment default that were modified during the preceding twelve months 6 11 13 24
Modifications under proprietary programs        
Financing Receivable, Modifications [Line Items]        
Troubled debt restructurings entering payment default that were modified during the preceding twelve months 20 56 49 87
Loans discharged in Chapter 7 bankruptcy        
Financing Receivable, Modifications [Line Items]        
Troubled debt restructurings entering payment default that were modified during the preceding twelve months 9 16 18 39
Trial modifications        
Financing Receivable, Modifications [Line Items]        
Troubled debt restructurings entering payment default that were modified during the preceding twelve months $ 11 $ 22 $ 27 $ 67