v2.4.0.6
Loans and Allowance for Credit Losses Textual (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Unearned income, net deferred loan fees and unamortized discount and premium $ 7,400,000,000 $ 9,300,000,000      
Loan charge-offs 10,973,000,000 13,615,000,000 20,100,000,000 19,825,000,000 8,777,000,000
Allowance for Credit Losses, Purchased Credit-Impaired 117,000,000 231,000,000 298,000,000 333,000,000  
Financing Receivable, Recorded Investment, nonaccrual status 20,486,000,000 21,304,000,000      
90 days past due and still accruing 23,245,000,000 22,569,000,000      
Impaired loans, Recorded Investment 30,012,000,000 28,010,000,000      
Unpaid principal balance 36,255,000,000 39,332,000,000      
Total unfunded loan commitments on troubled debt restructurings 421,000,000 3,800,000,000      
Financing Receivable Modifications, principal forgiven 495,000,000 577,000,000      
Allowances Related To Adoption Of Consolidation Accounting Guidance     693,000,000    
Other interest rate concessions, primary modification type 11,362,000,000 6,595,000,000      
High Value Properties, Threshold 1,000,000        
California [Member] | Residential Mortgage [Member]
         
Loan Concentration Risk (Textual) [Abstract]          
Concentration of loans as a percentage of total loans 13.00% 13.00%      
Concentration Risk, Geographic These loans are generally diversified among the larger metropolitan areas in California, with no single area consisting of more than 3% of total loans.        
Home Affordable Modification Program [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Impaired loans, Recorded Investment 402,000,000 421,000,000      
Second Lien Modification Program [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Impaired loans, Recorded Investment 45,000,000 46,000,000      
Proprietary Program [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Impaired loans, Recorded Investment 258,000,000 184,000,000      
Purchased Credit-Impaired Loans [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
90 days past due and still accruing 6,000,000,000 8,700,000,000      
Purchased Credit-Impaired Loans [Member] | California [Member] | Residential Mortgage [Member]
         
Loan Concentration Risk (Textual) [Abstract]          
Concentration of loans as a percentage of total loans 2.00% 3.00%      
Trial modifications [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Impaired loans, Recorded Investment 705,000,000 651,000,000      
Trial modifications [Member] | Financing Receivable Accruing [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Impaired loans, Recorded Investment 429,000,000 310,000,000      
Trial modifications [Member] | Financing Receivable Nonaccruing [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Impaired loans, Recorded Investment 276,000,000 341,000,000      
Commercial and Industrial Loans [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Loan charge-offs 1,306,000,000 1,598,000,000 2,775,000,000 3,365,000,000 1,653,000,000
Financing Receivable, Recorded Investment, nonaccrual status 1,422,000,000 2,142,000,000      
Impaired loans, Recorded Investment 2,086,000,000 3,072,000,000      
Unpaid principal balance 3,331,000,000 7,191,000,000      
Loan Concentration Risk (Textual) [Abstract]          
Concentration Risk, Other Risk At December 31, 2012 and 2011, we did not have concentrations representing 10% or more of our total loan portfolio in domestic commercial and industrial loans and lease financing by industry or CRE loans (real estate mortgage and real estate construction) by state or property type.        
Commercial and Industrial Loans [Member] | Financing Receivable, Fully Charged Off, No Recorded Investment [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Unpaid principal balance   2,500,000,000      
Commercial and Industrial Loans [Member] | Purchased Credit-Impaired Loans [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
90 days past due and still accruing 23,000,000 18,000,000      
Commercial Real Estate Mortgage [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Loan charge-offs 382,000,000 636,000,000 1,151,000,000 670,000,000 29,000,000
Financing Receivable, Recorded Investment, nonaccrual status 3,322,000,000 4,085,000,000      
Impaired loans, Recorded Investment 4,673,000,000 5,114,000,000      
Unpaid principal balance 5,766,000,000 7,490,000,000      
Commercial Real Estate Mortgage [Member] | Financing Receivable, Fully Charged Off, No Recorded Investment [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Unpaid principal balance   1,100,000,000      
Commercial Real Estate Mortgage [Member] | Purchased Credit-Impaired Loans [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
90 days past due and still accruing 140,000,000 225,000,000      
Commercial Real Estate Construction [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Loan charge-offs 191,000,000 351,000,000 1,189,000,000 1,063,000,000 178,000,000
Financing Receivable, Recorded Investment, nonaccrual status 1,003,000,000 1,890,000,000      
Impaired loans, Recorded Investment 1,345,000,000 2,281,000,000      
Unpaid principal balance 1,975,000,000 4,733,000,000      
Commercial Real Estate Construction [Member] | Financing Receivable, Fully Charged Off, No Recorded Investment [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Unpaid principal balance   1,800,000,000      
Commercial Real Estate Construction [Member] | Purchased Credit-Impaired Loans [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
90 days past due and still accruing 127,000,000 467,000,000      
Commercial Real Estate Mortgage and Construction Loans [Member]
         
Loan Concentration Risk (Textual) [Abstract]          
Concentration Risk, Other Risk At December 31, 2012 and 2011, we did not have concentrations representing 10% or more of our total loan portfolio in domestic commercial and industrial loans and lease financing by industry or CRE loans (real estate mortgage and real estate construction) by state or property type.        
Commercial Real Estate Mortgage and Construction Loans [Member] | Criticized [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Loans, excluding Purchased Credit Impaired Loans 21,000,000,000        
Financing Receivable, Recorded Investment, nonaccrual status 4,300,000,000        
Lease Financing and Foreign [Member] | Financing Receivable, Fully Charged Off, No Recorded Investment [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Unpaid principal balance   157,000,000      
Total Commercial [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Loan charge-offs 2,014,000,000 2,796,000,000 5,433,000,000 5,564,000,000 2,170,000,000
Allowance for Credit Losses, Purchased Credit-Impaired 88,000,000 165,000,000      
Financing Receivable, Recorded Investment, nonaccrual status 5,824,000,000 8,217,000,000      
Impaired loans, Recorded Investment 8,186,000,000 10,566,000,000      
Unpaid principal balance 11,235,000,000 19,726,000,000      
Total Commercial [Member] | Loans held for sale [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Financing Receivable, Recorded Investment, nonaccrual status 16,000,000 25,000,000      
Total Commercial [Member] | Purchased Credit-Impaired Loans [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
90 days past due and still accruing 457,000,000 885,000,000      
Total Consumer [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Loan charge-offs 8,959,000,000 10,819,000,000 14,667,000,000 14,261,000,000 6,607,000,000
Allowance for Credit Losses, Purchased Credit-Impaired 29,000,000 66,000,000      
Financing Receivable, Recorded Investment, nonaccrual status 14,662,000,000 13,087,000,000      
Financing Receivable, Recorded Investment, equal to or greater than 90 days past due 10,300,000,000 11,500,000,000      
90 days past due and still accruing 1,100,000,000 1,500,000,000      
Impaired loans, Recorded Investment 21,826,000,000 17,444,000,000      
Unpaid principal balance 25,020,000,000 19,606,000,000      
Total Consumer [Member] | Loans Discharged in Bankruptcy [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Loan charge-offs 888,000,000        
Financing Receivable, Recorded Investment, nonaccrual status 1,800,000,000        
Other interest rate concessions, primary modification type 5,200,000,000        
Real estate 1-4 family first mortgage [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Loan charge-offs 3,013,000,000 3,883,000,000 4,900,000,000 3,318,000,000 540,000,000
Financing Receivable, Recorded Investment, nonaccrual status 11,455,000,000 10,913,000,000      
Financing Receivables equal to or greater than 180 days past due, Percentage of Portfolio 3.00% 3.30%      
Impaired loans, Recorded Investment 18,472,000,000 14,486,000,000      
Unpaid principal balance 21,293,000,000 16,494,000,000      
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 336,000,000 301,000,000      
Real estate 1-4 family first mortgage [Member] | Loans Discharged in Bankruptcy [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Financing Receivable, Recorded Investment, nonaccrual status 1,400,000,000        
Other interest rate concessions, primary modification type 4,500,000,000        
Real estate 1-4 family junior lien mortgage [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Loan charge-offs 3,437,000,000 3,763,000,000 4,934,000,000 4,812,000,000 2,204,000,000
Financing Receivable, Recorded Investment, nonaccrual status 2,922,000,000 1,975,000,000      
Impaired loans, Recorded Investment 2,483,000,000 2,079,000,000      
Unpaid principal balance 2,855,000,000 2,232,000,000      
Real estate 1-4 family junior lien mortgage [Member] | Implementation of Interagency Guidance, Effect [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Financing Receivable, Recorded Investment, nonaccrual status 960,000,000        
Real estate 1-4 family junior lien mortgage [Member] | Loans Discharged in Bankruptcy [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Financing Receivable, Recorded Investment, nonaccrual status 205,000,000        
Other interest rate concessions, primary modification type 506,000,000        
Auto loans [Member] | Loans Discharged in Bankruptcy [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Financing Receivable, Recorded Investment, nonaccrual status 140,000,000        
Other interest rate concessions, primary modification type 140,000,000        
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 9,800,000,000 10,400,000,000      
90 days past due and still accruing 20,745,000,000 19,240,000,000      
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 18,500,000,000      
FHA Insured, VA Or FFELP Guaranteed [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
90 days past due and still accruing 21,800,000,000 20,500,000,000      
Student Loans under FFELP [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
90 days past due and still accruing 1,065,000,000 1,281,000,000      
Interest-only Loans [Member] | Residential Mortgage [Member]
         
Loan Concentration Risk (Textual) [Abstract]          
Concentration of loans as a percentage of total loans 18.00% 21.00%      
Pick-a-pay with payment option feature [Member]
         
Loan Concentration Risk (Textual) [Abstract]          
Concentration of loans as a percentage of total loans 4.00%       10.00%
Lines of credit [Member]
         
Loan Concentration Risk (Textual) [Abstract]          
Lines of credit draw period, terms Our first and junior lien lines of credit products generally have a draw period of 10 years with variable interest rates and payment options during the draw period of (1) interest only or (2) 1.5% of total outstanding balance. During the draw period, the borrower has the option of converting all or a portion of the line from a variable interest rate to a fixed rate with terms including interest-only payments for a fixed period between three to seven years or a fully amortizing payment with a fixed period between five to 30 years. At the end of the draw period, a line of credit generally converts to an amortizing payment loan with repayment terms of up to 30 years based on the balance at time of conversion.        
Lines of credit portfolio, outstanding balance 84,600,000,000        
Lines of credit portfolio, amount in amortization period 2,100,000,000        
Lines of credit portfolio, percentage in amortization period 2.00%        
Lines of credit portfolio, amount to enter amortization period in 2013-2014 8,200,000,000        
Lines of credit portfolio, percentage to enter amortization period in 2013-2014 10.00%        
Lines of credit portfolio, amount to enter amortization period in 2015-2017 29,400,000,000        
Lines of credit portfolio, percentage to enter amortization period in 2015-2017 35.00%        
Lines of credit portfolio, amount to enter amortization period in subsequent years 44,900,000,000        
Lines of credit portfolio, percentage to enter amortization period in subsequent years 53.00%        
Unfunded credit commitments, lines of credit portfolio 77,800,000,000        
Lines of credit, amortization period [Member]
         
Loan Concentration Risk (Textual) [Abstract]          
Lines of credit portfolio, amount 30 or more days past due 223,000,000        
Lines of credit portfolio, percentage 30 or more days past due 11.00%        
Lines of credit, draw period [Member]
         
Loan Concentration Risk (Textual) [Abstract]          
Lines of credit portfolio, amount 30 or more days past due 1,900,000,000        
Lines of credit portfolio, percentage 30 or more days past due 2.00%        
Lease Financing [Member]
         
Accounts Notes Loans And Financing Receivable (Textual) [Abstract]          
Loan charge-offs 24,000,000 38,000,000 120,000,000 229,000,000 65,000,000
Financing Receivable, Recorded Investment, nonaccrual status 27,000,000 53,000,000      
Impaired loans, Recorded Investment 39,000,000 68,000,000      
Unpaid principal balance $ 54,000,000 $ 127,000,000      
Loan Concentration Risk (Textual) [Abstract]          
Concentration Risk, Other Risk At December 31, 2012 and 2011, we did not have concentrations representing 10% or more of our total loan portfolio in domestic commercial and industrial loans and lease financing by industry or CRE loans (real estate mortgage and real estate construction) by state or property type.