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Outstanding Loans and Leases - Nonperforming (Details) (USD $)
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Dec. 31, 2011
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Dec. 31, 2010
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | $ 25,105,000,000 | $ 30,690,000,000 | ||||
| Accruing Past Due 90 Days or More | 24,636,000,000 | 22,379,000,000 | ||||
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Residential Mortgage [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Loan Receivable Curtailed By Federal Housing Administration | 17,000,000,000 | 8,300,000,000 | ||||
| Insured Loan Receivable Curtailed And Accruing Interest | 4,200,000,000 | 8,500,000,000 | ||||
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Home Loans [Member] | Residential Mortgage [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Troubled Debt Restructurings Classified As Non Performing Loans | 4,700,000,000 | 3,000,000,000 | ||||
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Home Loans [Member] | Home Equity [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Troubled Debt Restructurings Classified As Non Performing Loans | 539,000,000 | 535,000,000 | ||||
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Home Loans [Member] | Core Sub Portfolio Segment [Member] | Residential Mortgage [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 2,414,000,000 | [1] | 1,510,000,000 | [1] | ||
| Accruing Past Due 90 Days or More | 883,000,000 | [1] | 16,000,000 | [1] | ||
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Home Loans [Member] | Core Sub Portfolio Segment [Member] | Home Equity [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 439,000,000 | 107,000,000 | ||||
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Home Loans [Member] | Legacy Asset Servicing Sub Portfolio Segment [Member] | Residential Mortgage [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 13,556,000,000 | [1] | 16,181,000,000 | [1] | ||
| Accruing Past Due 90 Days or More | 20,281,000,000 | [1] | 16,752,000,000 | [1] | ||
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Home Loans [Member] | Legacy Asset Servicing Sub Portfolio Segment [Member] | Home Equity [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 2,014,000,000 | 2,587,000,000 | ||||
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Home Loans [Member] | Legacy Asset Servicing Sub Portfolio Segment [Member] | Discontinued real estate
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 290,000,000 | 331,000,000 | ||||
| Troubled Debt Restructurings Classified As Non Performing Loans | 97,000,000 | 75,000,000 | ||||
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Consumer Portfolio Segment [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 18,768,000,000 | 20,854,000,000 | ||||
| Accruing Past Due 90 Days or More | 24,324,000,000 | 21,747,000,000 | ||||
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Consumer Portfolio Segment [Member] | Direct/Indirect consumer
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 40,000,000 | 90,000,000 | ||||
| Accruing Past Due 90 Days or More | 746,000,000 | 1,058,000,000 | ||||
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Consumer Portfolio Segment [Member] | Other consumer
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 15,000,000 | 48,000,000 | ||||
| Accruing Past Due 90 Days or More | 2,000,000 | 2,000,000 | ||||
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Commercial Portfolio Segment [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 6,337,000,000 | 9,836,000,000 | ||||
| Accruing Past Due 90 Days or More | 312,000,000 | 632,000,000 | ||||
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Commercial Portfolio Segment [Member] | Commercial Real Estate
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 3,880,000,000 | 5,829,000,000 | ||||
| Accruing Past Due 90 Days or More | 7,000,000 | 47,000,000 | ||||
| Troubled Debt Restructurings Classified As Non Performing Loans | 1,100,000,000 | 770,000,000 | ||||
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Commercial Portfolio Segment [Member] | Commercial lease financing
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 26,000,000 | 117,000,000 | ||||
| Accruing Past Due 90 Days or More | 14,000,000 | 18,000,000 | ||||
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Commercial Portfolio Segment [Member] | U.S. small business commercial
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 114,000,000 | 204,000,000 | ||||
| Accruing Past Due 90 Days or More | 216,000,000 | 325,000,000 | ||||
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UNITED STATES | Consumer Portfolio Segment [Member] | Consumer Credit Card Financing Receivable [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Accruing Past Due 90 Days or More | 2,070,000,000 | 3,320,000,000 | ||||
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UNITED STATES | Commercial Portfolio Segment [Member] | Commercial Financing Receivable [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 2,174,000,000 | 3,453,000,000 | ||||
| Accruing Past Due 90 Days or More | 75,000,000 | 236,000,000 | ||||
| Troubled Debt Restructurings Classified As Non Performing Loans | 531,000,000 | 175,000,000 | ||||
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Non-U.S. Commercial | Consumer Portfolio Segment [Member] | Consumer Credit Card Financing Receivable [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Accruing Past Due 90 Days or More | 342,000,000 | 599,000,000 | ||||
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Non-U.S. Commercial | Commercial Portfolio Segment [Member] | Commercial Financing Receivable [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||
| Nonperforming Loans and Leases | 143,000,000 | 233,000,000 | ||||
| Accruing Past Due 90 Days or More | 6,000,000 | |||||
| Troubled Debt Restructurings Classified As Non Performing Loans | $ 38,000,000 | $ 7,000,000 | ||||
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