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 $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Home Loans [Member]
         
Financing Receivable, Impaired [Line Items]          
Troubled Debt Restructurings Carrying Value $ 6,939 [1] $ 2,578 $ 8,964 [1] $ 9,390  
Real Estate Acquired Through Foreclosure 800   800   2,000
Home Loans [Member] | Residential Mortgage [Member]
         
Financing Receivable, Impaired [Line Items]          
Troubled Debt Restructurings Carrying Value 6,201 [1] 2,409 8,123 [1] 8,826  
Unpaid Principal Balance 30,445   30,445   23,203
Carrying Value 25,019   25,019   19,287
Related Allowance 1,203   1,203   1,295
Average Carrying Value 22,667 15,827 20,718 14,820  
Interest Income Recognized 182 [2] 142 [2] 533 [2] 405 [2]  
Home Loans [Member] | Home Equity [Member]
         
Financing Receivable, Impaired [Line Items]          
Troubled Debt Restructurings Carrying Value 689 [1] 144 785 [1] 489  
Unpaid Principal Balance 4,376   4,376   3,298
Carrying Value 2,175   2,175   1,776
Related Allowance 464   464   622
Average Carrying Value 1,914 1,791 1,789 1,812  
Interest Income Recognized 25 [2] 15 [2] 66 [2] 40 [2]  
Home Loans [Member] | Discontinued real estate [Member]
         
Financing Receivable, Impaired [Line Items]          
Troubled Debt Restructurings Carrying Value 49 [1] 25 56 [1] 75  
Unpaid Principal Balance 629   629   634
Carrying Value 382   382   399
Related Allowance 22   22   29
Average Carrying Value 374 311 377 368  
Interest Income Recognized 3 [2] 4 [2] 11 [2] 11 [2]  
Home Loans [Member] | Impaired Financing Receivable with No Related Allowance [Domain] | Residential Mortgage [Member]
         
Financing Receivable, Impaired [Line Items]          
Unpaid Principal Balance 18,243   18,243   10,907
Carrying Value 13,863   13,863   8,168
Average Carrying Value 11,364 6,280 9,501 5,778  
Interest Income Recognized 86 [2] 54 [2] 233 [2] 170 [2]  
Home Loans [Member] | Impaired Financing Receivable with No Related Allowance [Domain] | Home Equity [Member]
         
Financing Receivable, Impaired [Line Items]          
Unpaid Principal Balance 3,119   3,119   1,747
Carrying Value 1,151   1,151   479
Average Carrying Value 819 407 603 437  
Interest Income Recognized 13 [2] 6 [2] 32 [2] 16 [2]  
Home Loans [Member] | Impaired Financing Receivable with No Related Allowance [Domain] | Discontinued real estate [Member]
         
Financing Receivable, Impaired [Line Items]          
Unpaid Principal Balance 468   468   421
Carrying Value 261   261   240
Average Carrying Value 242 210 233 218  
Interest Income Recognized 2 [2] 2 [2] 6 [2] 6 [2]  
Home Loans [Member] | Impaired Financing Receivable with Related Allowance [Domain] | Residential Mortgage [Member]
         
Financing Receivable, Impaired [Line Items]          
Unpaid Principal Balance 12,202   12,202   12,296
Carrying Value 11,156   11,156   11,119
Related Allowance 1,203   1,203   1,295
Average Carrying Value 11,303 9,547 11,217 9,042  
Interest Income Recognized 96 [2] 88 [2] 300 [2] 235 [2]  
Home Loans [Member] | Impaired Financing Receivable with Related Allowance [Domain] | Home Equity [Member]
         
Financing Receivable, Impaired [Line Items]          
Unpaid Principal Balance 1,257   1,257   1,551
Carrying Value 1,024   1,024   1,297
Related Allowance 464   464   622
Average Carrying Value 1,095 1,384 1,186 1,375  
Interest Income Recognized 12 [2] 9 [2] 34 [2] 24 [2]  
Home Loans [Member] | Impaired Financing Receivable with Related Allowance [Domain] | Discontinued real estate [Member]
         
Financing Receivable, Impaired [Line Items]          
Unpaid Principal Balance 161   161   213
Carrying Value 121   121   159
Related Allowance 22   22   29
Average Carrying Value 132 101 144 150  
Interest Income Recognized 1 [2] 2 [2] 5 [2] 5 [2]  
Current or Less Than Sixty Days Past Due [Member]
         
Financing Receivable, Impaired [Line Items]          
Troubled Debt Restructurings Carrying Value $ 1,100        
Discharged in the Current Year [Member] | Additional Troubled Debt Restructurings Recognized [Member]
         
Financing Receivable, Impaired [Line Items]          
Toubled Debt Restructuring Carrying Value, Percentage 20.00%        
Discharged in the Prior Year [Member] | Additional Troubled Debt Restructurings Recognized [Member]
         
Financing Receivable, Impaired [Line Items]          
Toubled Debt Restructuring Carrying Value, Percentage 34.00%        
Discharged Two or More Years Ago [Member] | Additional Troubled Debt Restructurings Recognized [Member]
         
Financing Receivable, Impaired [Line Items]          
Toubled Debt Restructuring Carrying Value, Percentage 46.00%        
[1] (1) TDRs entered into during the three and nine months ended September 30, 2012 include principal forgiveness as follows: residential mortgage modifications of $283 million and $447 million, home equity mortgage modifications of $2 million and $5 million and discontinued real estate modifications of $11 million and $15 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