v2.4.0.6
Loans and Allowance for Credit Losses Textual (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Unearned income, net deferred loan fees and unamortized discount and premium $ 7,000,000,000   $ 7,400,000,000
Loan charge-offs 1,861,000,000 2,880,000,000  
Allowance for Credit Losses, Purchased Credit-Impaired 80,000,000 245,000,000 117,000,000
Financing Receivable, Recorded Investment, nonaccrual status 19,526,000,000   20,486,000,000
90 days or more past due and still accruing 23,082,000,000   23,245,000,000
Impaired loans, Recorded Investment 30,387,000,000   30,012,000,000
Unpaid principal balance 36,598,000,000   36,255,000,000
Total unfunded loan commitments on troubled debt restructurings 409,000,000   421,000,000
Financing Receivable Modifications, principal forgiven 134,000,000 92,000,000  
Other interest rate concessions, primary modification type 2,466,000,000 1,829,000,000  
High Value Properties, Threshold 1,000,000    
Home Affordable Modification Program [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Impaired loans, Recorded Investment 395,000,000   402,000,000
Second Lien Modification Program [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Impaired loans, Recorded Investment 47,000,000   45,000,000
Proprietary Program [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Impaired loans, Recorded Investment 281,000,000   258,000,000
Purchased Credit-Impaired Loans [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
90 days or more past due and still accruing 5,800,000,000   6,000,000,000
Trial modifications [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Impaired loans, Recorded Investment 723,000,000   705,000,000
Trial modifications [Member] | Financing Receivable Accruing [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Impaired loans, Recorded Investment 306,000,000   429,000,000
Trial modifications [Member] | Financing Receivable Nonaccruing [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Impaired loans, Recorded Investment 417,000,000   276,000,000
Commercial and Industrial Loans [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Loan charge-offs 181,000,000 359,000,000  
Financing Receivable, Recorded Investment, nonaccrual status 1,193,000,000   1,422,000,000
Impaired loans, Recorded Investment 1,821,000,000   2,086,000,000
Unpaid principal balance 2,851,000,000   3,331,000,000
Commercial and Industrial Loans [Member] | Purchased Credit-Impaired Loans [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
90 days or more past due and still accruing 2,000,000   23,000,000
Commercial Real Estate Mortgage [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Loan charge-offs 60,000,000 82,000,000  
Financing Receivable, Recorded Investment, nonaccrual status 3,098,000,000   3,322,000,000
Impaired loans, Recorded Investment 4,371,000,000   4,673,000,000
Unpaid principal balance 5,567,000,000   5,766,000,000
Commercial Real Estate Mortgage [Member] | Purchased Credit-Impaired Loans [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
90 days or more past due and still accruing 79,000,000   140,000,000
Commercial Real Estate Construction [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Loan charge-offs 5,000,000 80,000,000  
Financing Receivable, Recorded Investment, nonaccrual status 870,000,000   1,003,000,000
Impaired loans, Recorded Investment 1,181,000,000   1,345,000,000
Unpaid principal balance 1,701,000,000   1,975,000,000
Commercial Real Estate Construction [Member] | Purchased Credit-Impaired Loans [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
90 days or more past due and still accruing 131,000,000   127,000,000
Commercial Real Estate Mortgage and Construction Loans [Member] | Criticized [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Loans, excluding Purchased Credit Impaired Loans 18,600,000,000    
Financing Receivable, Recorded Investment, nonaccrual status 4,000,000,000    
Total Commercial [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Loan charge-offs 260,000,000 558,000,000  
Allowance for Credit Losses, Purchased Credit-Impaired 53,000,000   88,000,000
Financing Receivable, Recorded Investment, nonaccrual status 5,242,000,000   5,824,000,000
Impaired loans, Recorded Investment 7,447,000,000   8,186,000,000
Unpaid principal balance 10,273,000,000   11,235,000,000
Total Commercial [Member] | Loans held for sale [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Financing Receivable, Recorded Investment, nonaccrual status 15,000,000   16,000,000
Total Commercial [Member] | Purchased Credit-Impaired Loans [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
90 days or more past due and still accruing 384,000,000   457,000,000
Total Consumer [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Loan charge-offs 1,601,000,000 2,322,000,000  
Allowance for Credit Losses, Purchased Credit-Impaired 27,000,000   29,000,000
Financing Receivable, Recorded Investment, nonaccrual status 14,284,000,000   14,662,000,000
Financing Receivable, Recorded Investment, equal to or greater than 90 days past due 9,400,000,000   10,300,000,000
90 days or more past due and still accruing 1,100,000,000   1,100,000,000
Impaired loans, Recorded Investment 22,940,000,000   21,826,000,000
Unpaid principal balance 26,325,000,000   25,020,000,000
Total Consumer [Member] | Loans Discharged in Bankruptcy [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Other interest rate concessions, primary modification type 1,300,000,000    
Real estate 1-4 family first mortgage [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Loan charge-offs 475,000,000 828,000,000  
Financing Receivable, Recorded Investment, nonaccrual status 11,320,000,000   11,455,000,000
Financing Receivables equal to or greater than 180 days past due, Percentage of Portfolio 2.80%   3.00%
Impaired loans, Recorded Investment 19,610,000,000   18,472,000,000
Unpaid principal balance 22,547,000,000   21,293,000,000
Real estate 1-4 family first mortgage [Member] | Mortgages held for sale [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Financing Receivable, Recorded Investment, nonaccrual status 368,000,000   336,000,000
Real estate 1-4 family junior lien mortgage [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Loan charge-offs 514,000,000 820,000,000  
Financing Receivable, Recorded Investment, nonaccrual status 2,712,000,000   2,922,000,000
Impaired loans, Recorded Investment 2,523,000,000   2,483,000,000
Unpaid principal balance 2,911,000,000   2,855,000,000
Automobile [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Loan charge-offs 164,000,000 179,000,000  
Financing Receivable, Recorded Investment, nonaccrual status 220,000,000   245,000,000
Impaired loans, Recorded Investment 279,000,000   314,000,000
Unpaid principal balance 331,000,000   314,000,000
FHA Insured/VA Guaranteed [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Financing Receivable, certain purchases net of certain transfers to held for sale 2,000,000,000 3,500,000,000  
90 days or more past due and still accruing 20,745,000,000   20,745,000,000
FHA Insured/VA Guaranteed [Member] | Financing Receivable 90 Days Or More Past Due [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Government insured/guaranteed loans 20,200,000,000   20,200,000,000
FHA Insured, VA Or FFELP Guaranteed [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
90 days or more past due and still accruing 21,700,000,000   21,800,000,000
Student Loans under FFELP [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
90 days or more past due and still accruing 977,000,000   1,065,000,000
Student Loans under FFELP [Member] | Financing Receivable 90 Days Or More Past Due [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Government insured/guaranteed loans 1,000,000,000   1,100,000,000
Lease Financing [Member]
     
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]      
Loan charge-offs 3,000,000 8,000,000  
Financing Receivable, Recorded Investment, nonaccrual status 25,000,000   27,000,000
Impaired loans, Recorded Investment 35,000,000   39,000,000
Unpaid principal balance $ 50,000,000   $ 54,000,000