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Loans and Allowance for Credit Losses, by Loan to Value Ratio, Consumer (Details) (USD $)
In Millions, unless otherwise specified |
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, 2007
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|---|---|---|---|---|---|
| Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract] | |||||
| Purchased Credit Impaired Loans, Carrying Value | $ 36,719 | $ 41,430 | $ 51,705 | $ 58,797 | |
| Loans | 769,631 | 757,267 | 782,770 | 864,830 | 382,195 |
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Residential Mortgage [Member]
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| Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract] | |||||
| Purchased Credit Impaired Loans, Carrying Value | 29,952 | 33,495 | |||
| Loans | 314,885 | 326,384 | |||
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Residential Mortgage [Member] | Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member]
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| Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract] | |||||
| 0-60% | 59,170 | 62,622 | |||
| 60.01-80% | 62,553 | 60,286 | |||
| 80.01-100% | 57,054 | 63,752 | |||
| 100.01-120% | 36,945 | 42,034 | |||
| Greater than 120% | 37,234 | 42,871 | |||
| No LTV/CLTV Available | 5,422 | 5,810 | |||
| Government insured/guaranteed loans | 26,555 | 15,514 | |||
| Loans, excluding Purchased Credit Impaired Loans | 284,933 | 292,889 | |||
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Real estate 1-4 family first mortgage [Member]
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| Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract] | |||||
| Purchased Credit Impaired Loans, Carrying Value | 29,746 | 33,245 | 38,386 | 39,214 | |
| Loans | 228,894 | 230,235 | 229,536 | 247,894 | 71,415 |
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Real estate 1-4 family first mortgage [Member] | Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member]
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| Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract] | |||||
| 0-60% | 46,476 | 47,808 | |||
| 60.01-80% | 46,831 | 42,542 | |||
| 80.01-100% | 36,764 | 39,497 | |||
| 100.01-120% | 21,116 | 24,147 | |||
| Greater than 120% | 18,608 | 24,243 | |||
| No LTV/CLTV Available | 2,798 | 3,239 | |||
| Government insured/guaranteed loans | 26,555 | 15,514 | |||
| Loans, excluding Purchased Credit Impaired Loans | 199,148 | 196,990 | |||
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Real estate 1-4 family junior lien mortgage [Member]
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| Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract] | |||||
| Purchased Credit Impaired Loans, Carrying Value | 206 | 250 | 331 | 728 | |
| Loans | 85,991 | 96,149 | 103,708 | 110,164 | 75,565 |
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Real estate 1-4 family junior lien mortgage [Member] | Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member]
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| Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract] | |||||
| 0-60% | 12,694 | 14,814 | |||
| 60.01-80% | 15,722 | 17,744 | |||
| 80.01-100% | 20,290 | 24,255 | |||
| 100.01-120% | 15,829 | 17,887 | |||
| Greater than 120% | 18,626 | 18,628 | |||
| No LTV/CLTV Available | 2,624 | 2,571 | |||
| Government insured/guaranteed loans | 0 | 0 | |||
| Loans, excluding Purchased Credit Impaired Loans | $ 85,785 | $ 95,899 |