Annual report pursuant to Section 13 and 15(d)

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

v3.8.0.1
Outstanding Loans and Leases - Consumer Real Estate - Modification Programs (Details) - Consumer real estate - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Financing Receivable, Modifications [Line Items]      
Total modifications $ 1,302 $ 1,666 $ 3,430
Modifications under government programs      
Financing Receivable, Modifications [Line Items]      
Total modifications 85 187 488
Modifications under proprietary programs      
Financing Receivable, Modifications [Line Items]      
Total modifications 437 422 595
Trial modifications      
Financing Receivable, Modifications [Line Items]      
Total modifications 569 831 1,968
Loans discharged in Chapter 7 bankruptcy      
Financing Receivable, Modifications [Line Items]      
Total modifications 211 226 379
Contractual interest rate reduction | Modifications under government programs      
Financing Receivable, Modifications [Line Items]      
Total modifications 59 151 431
Contractual interest rate reduction | Modifications under proprietary programs      
Financing Receivable, Modifications [Line Items]      
Total modifications 281 235 219
Capitalization of past due amounts | Modifications under proprietary programs      
Financing Receivable, Modifications [Line Items]      
Total modifications 63 40 79
Principal and/or interest forbearance | Modifications under government programs      
Financing Receivable, Modifications [Line Items]      
Total modifications 4 13 11
Principal and/or interest forbearance | Modifications under proprietary programs      
Financing Receivable, Modifications [Line Items]      
Total modifications 38 72 168
Other modifications | Modifications under government programs      
Financing Receivable, Modifications [Line Items]      
Total modifications 22 23 46
Other modifications | Modifications under proprietary programs      
Financing Receivable, Modifications [Line Items]      
Total modifications $ 55 $ 75 $ 129