Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Home Loans Impaired Loans (Details)

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Outstanding Loans and Leases - Home Loans Impaired Loans (Details) (USD $)
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Financing Receivable, Impaired [Line Items]      
Troubled Debt Restructurings Carrying Value $ 179,000,000 $ 179,000,000  
Home Loans [Member]
      
Financing Receivable, Impaired [Line Items]      
Troubled Debt Restructurings Carrying Value 1,475,000,000 [1] 4,997,000,000 [1]  
Real Estate Acquired Through Foreclosure 538,000,000   533,000,000
Residential Mortgage [Member]
      
Financing Receivable, Impaired [Line Items]      
Troubled Debt Restructurings Carrying Value 1,335,000,000 [1] 4,843,000,000 [1]  
Unpaid Principal Balance 33,767,000,000   34,908,000,000
Carrying Value 28,072,000,000   29,312,000,000
Related Allowance 907,000,000   991,000,000
Average Carrying Value 28,692,000,000 29,794,000,000  
Interest Income Recognized 291,000,000 [2] 298,000,000 [2]  
Residential Mortgage [Member] | Financing Receivable With Related Allowance [Member]
      
Financing Receivable, Impaired [Line Items]      
Unpaid Principal Balance 12,213,000,000   13,341,000,000
Carrying Value 11,802,000,000   12,862,000,000
Related Allowance 907,000,000   991,000,000
Average Carrying Value 12,332,000,000 13,900,000,000  
Interest Income Recognized 131,000,000 [2] 154,000,000 [2]  
Residential Mortgage [Member] | Financing Receivable Without Related Allowance [Member]
      
Financing Receivable, Impaired [Line Items]      
Unpaid Principal Balance 21,554,000,000   21,567,000,000
Carrying Value 16,270,000,000   16,450,000,000
Related Allowance 0   0
Average Carrying Value 16,360,000,000 15,894,000,000  
Interest Income Recognized 160,000,000 [2] 144,000,000 [2]  
Home Equity [Member]
      
Financing Receivable, Impaired [Line Items]      
Troubled Debt Restructurings Carrying Value 140,000,000 [1] 154,000,000 [1]  
Unpaid Principal Balance 4,183,000,000   4,142,000,000
Carrying Value 2,158,000,000   2,146,000,000
Related Allowance 225,000,000   240,000,000
Average Carrying Value 2,152,000,000 2,122,000,000  
Interest Income Recognized 30,000,000 [2] 28,000,000 [2]  
Home Equity [Member] | Financing Receivable With Related Allowance [Member]
      
Financing Receivable, Impaired [Line Items]      
Unpaid Principal Balance 874,000,000   893,000,000
Carrying Value 741,000,000   761,000,000
Related Allowance 225,000,000   240,000,000
Average Carrying Value 751,000,000 988,000,000  
Interest Income Recognized 8,000,000 [2] 11,000,000 [2]  
Home Equity [Member] | Financing Receivable Without Related Allowance [Member]
      
Financing Receivable, Impaired [Line Items]      
Unpaid Principal Balance 3,309,000,000   3,249,000,000
Carrying Value 1,417,000,000   1,385,000,000
Related Allowance 0   0
Average Carrying Value 1,401,000,000 1,134,000,000  
Interest Income Recognized 22,000,000 [2] 17,000,000 [2]  
Fully Insured Loans [Member]
      
Financing Receivable, Impaired [Line Items]      
Troubled Debt Restructurings Carrying Value 3,400,000,000    
Troubled Debt Restructurings, Non-performing With No Change in Repayment Terms At Time of Discharge 1,800,000,000    
Fully Insured Loans [Member] | Fully Insured Loans [Member]
      
Financing Receivable, Impaired [Line Items]      
Troubled Debt Restructurings Carrying Value $ 1,600,000,000    
[1] TDRs entered into during the three months ended March 31, 2014 and 2013 include residential mortgage modifications with principal forgiveness of $17 million and $219 million.
[2] Interest income recognized includes interest accrued and collected on the outstanding balances of accruing impaired loans as well as interest cash collections on nonaccruing impaired loans for which the principal is considered collectible.