Quarterly report pursuant to Section 13 or 15(d)

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

v3.4.0.3
Outstanding Loans and Leases Outstanding Loans and Leases - Consumer Real Estate - Modification Programs (Details) - Consumer Real Estate - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Financing Receivable, Modifications [Line Items]    
Carrying Value $ 669 $ 1,824
Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 38 105
Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 26 129
Trial modifications    
Financing Receivable, Modifications [Line Items]    
Carrying Value 517 1,436
Loans discharged in Chapter 7 bankruptcy    
Financing Receivable, Modifications [Line Items]    
Carrying Value 88 154
Contractual interest rate reduction | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 27 87
Contractual interest rate reduction | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 13 52
Capitalization of past due amounts | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 8 32
Principal and/or interest forbearance | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 2 3
Principal and/or interest forbearance | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 3 13
Other modifications | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 9 15
Other modifications | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 2 32
Residential Mortgage    
Financing Receivable, Modifications [Line Items]    
Carrying Value 488 1,640
Residential Mortgage | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 31 91
Residential Mortgage | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 23 98
Residential Mortgage | Trial modifications    
Financing Receivable, Modifications [Line Items]    
Carrying Value 368 1,340
Residential Mortgage | Loans discharged in Chapter 7 bankruptcy    
Financing Receivable, Modifications [Line Items]    
Carrying Value 66 111
Residential Mortgage | Contractual interest rate reduction | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 22 76
Residential Mortgage | Contractual interest rate reduction | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 12 50
Residential Mortgage | Capitalization of past due amounts | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 7 30
Residential Mortgage | Principal and/or interest forbearance | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 0 0
Residential Mortgage | Principal and/or interest forbearance | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 3 11
Residential Mortgage | Other modifications | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 9 15
Residential Mortgage | Other modifications | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 1 7
Home equity    
Financing Receivable, Modifications [Line Items]    
Carrying Value 181 184
Home equity | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 7 14
Home equity | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 3 31
Home equity | Trial modifications    
Financing Receivable, Modifications [Line Items]    
Carrying Value 149 96
Home equity | Loans discharged in Chapter 7 bankruptcy    
Financing Receivable, Modifications [Line Items]    
Carrying Value 22 43
Home equity | Contractual interest rate reduction | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 5 11
Home equity | Contractual interest rate reduction | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 1 2
Home equity | Capitalization of past due amounts | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 1 2
Home equity | Principal and/or interest forbearance | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 2 3
Home equity | Principal and/or interest forbearance | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 0 2
Home equity | Other modifications | Modifications under government programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value 0 0
Home equity | Other modifications | Modifications under proprietary programs    
Financing Receivable, Modifications [Line Items]    
Carrying Value $ 1 $ 25