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)

v3.10.0.1
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, 2018
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
payment
Jun. 30, 2017
USD ($)
Financing Receivable, Modifications [Line Items]        
Number of missing payments causing default | payment     3  
Trouble debt restructurings entered payment default that were modified during the preceding twelve months $ 105 $ 114 $ 217 $ 448
Modifications under government programs        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 11 20 24 46
Modifications under proprietary programs        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 56 33 87 67
Loans discharged in Chapter 7 bankruptcy        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 16 15 39 77
Trial modifications        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months $ 22 $ 46 $ 67 $ 258