Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Consumer Real Estate - TDRs Entered into During the Period (Details)

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Outstanding Loans and Leases - Consumer Real Estate - TDRs Entered into During the Period (Details) - Consumer Real Estate - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Financing Receivable, Modifications [Line Items]    
Unpaid Principal Balance $ 757 $ 2,137
Carrying Value $ 669 $ 1,824
Pre-Modification Interest Rate 4.35% 4.93%
Post-Modification Interest Rate 4.24% 4.74%
Net Charge-offs $ 12 $ 28
Residential Mortgage    
Financing Receivable, Modifications [Line Items]    
Unpaid Principal Balance 526 1,879
Carrying Value $ 488 $ 1,640
Pre-Modification Interest Rate 4.72% 5.04%
Post-Modification Interest Rate 4.61% 4.91%
Net Charge-offs $ 2 $ 17
Principal forgiveness 10 159
Home equity    
Financing Receivable, Modifications [Line Items]    
Unpaid Principal Balance 231 258
Carrying Value $ 181 $ 184
Pre-Modification Interest Rate 3.50% 4.08%
Post-Modification Interest Rate 3.39% 3.55%
Net Charge-offs $ 10 $ 11