Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Home Loans - TDRs Entering Payment Default That Were Modified During the Preceding 12 Months (Details)

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Outstanding Loans and Leases - Home Loans - TDRs Entering Payment Default That Were Modified During the Preceding 12 Months (Details) (Residential Portfolio Segment, USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Financing Receivable, Modifications [Line Items]        
Carrying value of loans entered into payment default that are no longer held     $ 1,100 $ 1,500
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 949.0 [1] 1,687.0 [1] 3,398.0 [1] 4,967.0 [1]
Residential Mortgage
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 913.0 1,681.0 3,297.0 4,926.0
Home equity
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 36.0 6.0 101.0 41.0
Modifications under government programs
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 194.0 [1] 86.0 [1] 540.0 [1] 246.0 [1]
Modifications under government programs | Residential Mortgage
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 193.0 86.0 537.0 244.0
Modifications under government programs | Home equity
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 1.0    3.0 2.0
Modifications under proprietary programs
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 138.0 [1] 185.0 [1] 616.0 [1] 735.0 [1]
Modifications under proprietary programs | Residential Mortgage
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 137.0 185.0 612.0 731.0
Modifications under proprietary programs | Home equity
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 1.0 0 4.0 4.0
Loans discharged in Chapter 7 bankruptcy
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 136.0 [1],[2] 208.0 [1],[2] 452.0 [1],[2] 836.0 [1],[2]
Loans discharged in Chapter 7 bankruptcy | Residential Mortgage
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 121.0 [2] 205.0 [2] 395.0 [2] 809.0 [2]
Loans discharged in Chapter 7 bankruptcy | Home equity
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 15.0 [2] 3.0 [2] 57.0 [2] 27.0 [2]
Trial modifications
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 481.0 [1] 1,208.0 [1] 1,790.0 [1] 3,150.0 [1]
Trial modifications | Residential Mortgage
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 462.0 1,205.0 1,753.0 3,142.0
Trial modifications | Home equity
        
Financing Receivable, Modifications [Line Items]        
Trouble debt restructurings entered payment default that were modified during the preceding twelve months $ 19.0 $ 3.0 $ 37.0 $ 8.0
[1] Total carrying value includes loans with a carrying value of $1.1 billion and $1.5 billion that entered into payment default during the nine months ended September 30, 2014 and 2013 but were no longer held by the Corporation as of September 30, 2014 and 2013 due to sales and other dispositions.
[2] Includes loans discharged in Chapter 7 bankruptcy with no change in repayment terms that are classified as TDRs.