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Variable Interest Entities And Securitization Activities (Mortgage Servicing Activities For SPEs) (Details) (USD $)
In Millions, unless otherwise specified |
Jun. 30, 2011
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Dec. 31, 2010
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| Assets serviced (unpaid principal balance) | $ 12,000 | $ 13,000 | ||||
| Amounts past due 90 days or greater (unpaid principal balance) | 1,800 | 2,000 | ||||
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Unconsolidated Special Purpose Entities [Member] | Residential Mortgage Loans [Member]
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| Assets serviced (unpaid principal balance) | 9,902 | 10,616 | ||||
| Amounts past due 90 days or greater (unpaid principal balance) | 3,375 | [1] | 3,861 | [1] | ||
| Percentage of amounts past due 90 days or greater | 34.10% | [1] | 36.40% | [1] | ||
| Credit losses | 206 | 1,098 | ||||
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Unconsolidated Special Purpose Entities [Member] | Commercial Mortgage Loans [Member]
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| Assets serviced (unpaid principal balance) | 6,893 | 7,108 | ||||
| Amounts past due 90 days or greater (unpaid principal balance) | [1] | [1] | ||||
| Percentage of amounts past due 90 days or greater | [1] | [1] | ||||
| Credit losses | ||||||
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Consolidated Special Purpose Entities [Member] | Residential Mortgage Loans [Member]
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| Assets serviced (unpaid principal balance) | 2,221 | 2,357 | ||||
| Amounts past due 90 days or greater (unpaid principal balance) | 408 | [1] | 446 | [1] | ||
| Percentage of amounts past due 90 days or greater | 18.40% | [1] | 18.90% | [1] | ||
| Credit losses | 13 | 35 | ||||
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Consolidated Special Purpose Entities [Member] | Commercial Mortgage Loans [Member]
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| Assets serviced (unpaid principal balance) | 1,993 | 2,097 | ||||
| Amounts past due 90 days or greater (unpaid principal balance) | [1] | [1] | ||||
| Percentage of amounts past due 90 days or greater | [1] | [1] | ||||
| Credit losses | ||||||
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