Quarterly report pursuant to Section 13 or 15(d)

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

v3.7.0.1
Outstanding Loans and Leases - Consumer Real Estate - Modification Programs (Details) - Consumer real estate - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Financing Receivable, Modifications [Line Items]    
Carrying value $ 533 $ 669
Residential Mortgage    
Financing Receivable, Modifications [Line Items]    
Carrying value 344 488
Residential Mortgage | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 31 31
Residential Mortgage | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 21 23
Residential Mortgage | Trial modifications    
Financing Receivable, Modifications [Line Items]    
Carrying value 237 368
Residential Mortgage | Loans discharged in Chapter 7 bankruptcy    
Financing Receivable, Modifications [Line Items]    
Carrying value 55 66
Residential Mortgage | Contractual interest rate reduction | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 28 22
Residential Mortgage | Contractual interest rate reduction | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 13 12
Residential Mortgage | Capitalization of past due amounts | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 5 7
Residential Mortgage | Principal and/or interest forbearance | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 1 0
Residential Mortgage | Principal and/or interest forbearance | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 2 3
Residential Mortgage | Other modifications | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 2 9
Residential Mortgage | Other modifications | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 1 1
Home equity lines of credit    
Financing Receivable, Modifications [Line Items]    
Carrying value 189 181
Home equity lines of credit | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 4 7
Home equity lines of credit | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 31 3
Home equity lines of credit | Trial modifications    
Financing Receivable, Modifications [Line Items]    
Carrying value 135 149
Home equity lines of credit | Loans discharged in Chapter 7 bankruptcy    
Financing Receivable, Modifications [Line Items]    
Carrying value 19 22
Home equity lines of credit | Contractual interest rate reduction | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 4 5
Home equity lines of credit | Contractual interest rate reduction | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 1 1
Home equity lines of credit | Capitalization of past due amounts | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying value   1
Home equity lines of credit | Principal and/or interest forbearance | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 0 2
Home equity lines of credit | Principal and/or interest forbearance | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 1 0
Home equity lines of credit | Other modifications | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying value 0 0
Home equity lines of credit | Other modifications | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying value $ 29 $ 1