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Loans and Allowance for Credit Losses Textual (Details) (USD $)
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12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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Dec. 31, 2008
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Dec. 31, 2011
Residential Mortgage [Member]
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Dec. 31, 2011
California Concentration Risk [Member]
Residential Mortgage [Member]
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Dec. 31, 2010
California Concentration Risk [Member]
Residential Mortgage [Member]
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Dec. 31, 2011
Home Affordable Modification Program [Member]
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Dec. 31, 2011
Second Lien Modification Program [Member]
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Dec. 31, 2011
Proprietary Program [Member]
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Dec. 31, 2011
Purchased Credit-Impaired Loans [Member]
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Dec. 31, 2010
Purchased Credit-Impaired Loans [Member]
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Dec. 31, 2011
Purchased Credit-Impaired Loans [Member]
California Concentration Risk [Member]
Residential Mortgage [Member]
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Dec. 31, 2010
Purchased Credit-Impaired Loans [Member]
California Concentration Risk [Member]
Residential Mortgage [Member]
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Dec. 31, 2011
Financing Receivable Accruing [Member]
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Dec. 31, 2011
Financing Receivable Nonaccruing [Member]
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Dec. 31, 2011
Trial modifications [Member]
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Dec. 31, 2011
Commercial and Industrial Loans [Member]
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Dec. 31, 2010
Commercial and Industrial Loans [Member]
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Dec. 31, 2009
Commercial and Industrial Loans [Member]
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Dec. 31, 2008
Commercial and Industrial Loans [Member]
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Dec. 31, 2011
Commercial and Industrial Loans [Member]
Purchased Credit-Impaired Loans [Member]
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Dec. 31, 2010
Commercial and Industrial Loans [Member]
Purchased Credit-Impaired Loans [Member]
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Dec. 31, 2011
Commercial Real Estate Mortgage and Construction Loans [Member]
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Dec. 31, 2011
Commercial Real Estate Mortgage and Construction Loans [Member]
Criticized [Member]
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Dec. 31, 2011
Lease Financing [Member]
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Dec. 31, 2010
Lease Financing [Member]
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Dec. 31, 2011
Total Commercial [Member]
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Dec. 31, 2010
Total Commercial [Member]
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Dec. 31, 2011
Total Commercial [Member]
Purchased Credit-Impaired Loans [Member]
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Dec. 31, 2010
Total Commercial [Member]
Purchased Credit-Impaired Loans [Member]
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Sep. 30, 2011
Total Commercial [Member]
Impaired Financing Receivables, Not Previously Classified As Impaired [Member]
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Dec. 31, 2011
Real estate 1-4 family first mortgage [Member]
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Dec. 31, 2010
Real estate 1-4 family first mortgage [Member]
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Dec. 31, 2011
Total Consumer [Member]
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Dec. 31, 2010
Total Consumer [Member]
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Dec. 31, 2011
Total Consumer [Member]
Financing Receivable Accruing [Member]
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Dec. 31, 2010
Total Consumer [Member]
Financing Receivable Accruing [Member]
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Dec. 31, 2011
Mortgages held for sale [Member]
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Dec. 31, 2010
Mortgages held for sale [Member]
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Dec. 31, 2011
Loans held for sale [Member]
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Dec. 31, 2010
Loans held for sale [Member]
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Dec. 31, 2011
FHA Insured/VA Guaranteed [Member]
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Dec. 31, 2010
FHA Insured/VA Guaranteed [Member]
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Dec. 31, 2011
FHA Insured, VA Or FFELP Guaranteed [Member]
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Dec. 31, 2010
FHA Insured, VA Or FFELP Guaranteed [Member]
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Dec. 31, 2011
Interest Only Loans [Member]
Residential Mortgage [Member]
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Dec. 31, 2010
Interest Only Loans [Member]
Residential Mortgage [Member]
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| Accounts Notes Loans And Financing Receivable (Textual) [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||
| Unearned income, net deferred loan fees and unamortized discount and premium | $ 9,300,000,000 | $ 11,300,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||
| Financing Receivable, Certain Purchases Net of Certain Transfers to Held for Sale | 10,400,000,000 | 7,000,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||
| Allowances related to adoption of Consolidation Accounting Guidance | 693,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||
| Allowance for loan losses and credit losses | 231,000,000 | 298,000,000 | 333,000,000 | 0 | 165,000,000 | 266,000,000 | 330,000,000 | 0 | ||||||||||||||||||||||||||||||||||||||||
| Loans, excluding Purchased Credit Impaired Loans | 29,300,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||
| Previously sold reverse mortgages consolidated during period, ending balance | 5,600,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||
| 90 days past due but still accruing | 22,569,000,000 | 18,488,000,000 | 8,700,000,000 | 11,600,000,000 | 18,000,000 | 84,000,000 | 885,000,000 | 2,111,000,000 | 11,500,000,000 | 13,000,000,000 | 1,500,000,000 | 2,000,000,000 | 19,240,000,000 | 14,733,000,000 | 20,500,000,000 | 15,800,000,000 | ||||||||||||||||||||||||||||||||
| Financing Receivables equal to or greater than 180 days past due, Percentage of Portfolio | 3.30% | 3.40% | ||||||||||||||||||||||||||||||||||||||||||||||
| Financing Receivable, Recorded Investment, Nonaccrual Status | 21,304,000,000 | 26,242,000,000 | 2,142,000,000 | 3,213,000,000 | 6,000,000,000 | 53,000,000 | 108,000,000 | 8,217,000,000 | 11,351,000,000 | 10,913,000,000 | 12,289,000,000 | 13,087,000,000 | 14,891,000,000 | 301,000,000 | 426,000,000 | 25,000,000 | 3,000,000 | |||||||||||||||||||||||||||||||
| Total unfunded loan commitments on troubled debt restructurings | 3,800,000,000 | 1,200,000,000 | 1,800,000,000 | 345,000,000 | ||||||||||||||||||||||||||||||||||||||||||||
| Impaired Financing Receivable, Recorded Investment | 28,010,000,000 | 25,738,000,000 | 421,000,000 | 46,000,000 | 184,000,000 | 651,000,000 | 3,072,000,000 | 3,600,000,000 | 68,000,000 | 91,000,000 | 10,566,000,000 | 11,731,000,000 | 685,000,000 | 14,486,000,000 | 11,603,000,000 | 17,444,000,000 | 14,007,000,000 | |||||||||||||||||||||||||||||||
| Impaired Financing Receivable, Related Allowance | 6,678,000,000 | 6,202,000,000 | 501,000,000 | 607,000,000 | 21,000,000 | 34,000,000 | 2,133,000,000 | 2,479,000,000 | 54,000,000 | 3,380,000,000 | 2,754,000,000 | 4,545,000,000 | 3,723,000,000 | |||||||||||||||||||||||||||||||||||
| Recorded Investments on Trial Payment Programs | 310,000,000 | 341,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||
| Financing Receivable Modifications, Principa lForgiven | $ 577,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||
| Loan Concentration Risk (Textual) [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||
| Concentration of loans as a percentage of total loans | 13.00% | 14.00% | 3.00% | 3.00% | 21.00% | 25.00% | ||||||||||||||||||||||||||||||||||||||||||
| 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. | |||||||||||||||||||||||||||||||||||||||||||||||
| Concentration Risk, Additional Characteristic | California | |||||||||||||||||||||||||||||||||||||||||||||||
| Concentration Risk, Other Risk | At December 31, 2011 and 2010, 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. | At December 31, 2011 and 2010, 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. | At December 31, 2011 and 2010, 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. | |||||||||||||||||||||||||||||||||||||||||||||