Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Consumer Real Estate - Modification Programs (Details)

v3.10.0.1
Outstanding Loans and Leases - Consumer Real Estate - Modification Programs (Details) - Consumer real estate - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Financing Receivable, Modifications [Line Items]        
Total modifications $ 285 $ 435 $ 991 $ 1,148
Modifications under government programs        
Financing Receivable, Modifications [Line Items]        
Total modifications 12 18 48 82
Modifications under proprietary programs        
Financing Receivable, Modifications [Line Items]        
Total modifications 33 30 446 298
Trial modifications        
Financing Receivable, Modifications [Line Items]        
Total modifications 201 329 376 605
Loans discharged in Chapter 7 bankruptcy        
Financing Receivable, Modifications [Line Items]        
Total modifications 39 58 121 163
Contractual interest rate reduction | Modifications under government programs        
Financing Receivable, Modifications [Line Items]        
Total modifications 5 10 19 56
Contractual interest rate reduction | Modifications under proprietary programs        
Financing Receivable, Modifications [Line Items]        
Total modifications 7 15 159 178
Capitalization of past due amounts | Modifications under proprietary programs        
Financing Receivable, Modifications [Line Items]        
Total modifications 10 12 67 47
Principal and/or interest forbearance | Modifications under government programs        
Financing Receivable, Modifications [Line Items]        
Total modifications 0 1 0 4
Principal and/or interest forbearance | Modifications under proprietary programs        
Financing Receivable, Modifications [Line Items]        
Total modifications 2 2 25 28
Other modifications | Modifications under government programs        
Financing Receivable, Modifications [Line Items]        
Total modifications 7 7 29 22
Other modifications | Modifications under proprietary programs        
Financing Receivable, Modifications [Line Items]        
Total modifications $ 14 $ 1 195 $ 45
Hurricane-Related Modifications | Modifications under government programs        
Financing Receivable, Modifications [Line Items]        
Total modifications     $ 197