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Loans and Allowance for Credit Losses, Loans Outstanding (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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|---|---|---|---|---|---|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | $ 769,631 | $ 757,267 | $ 782,770 | $ 864,830 | $ 382,195 |
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Commercial and Industrial Loans [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | 167,216 | 151,284 | 158,352 | 202,469 | 90,468 |
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Commercial Real Estate Mortgage [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | 105,975 | 99,435 | 97,527 | 94,923 | 36,747 |
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Commercial Real Estate Construction [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | 19,382 | 25,333 | 36,978 | 42,861 | 18,854 |
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Lease Financing [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | 13,117 | 13,094 | 14,210 | 15,829 | 6,772 |
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Foreign Loans [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | 39,760 | 32,912 | 29,398 | 33,882 | 7,441 |
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Total Commercial [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | 345,450 | 322,058 | 336,465 | 389,964 | 160,282 |
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Real estate 1-4 family first mortgage [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | 228,894 | 230,235 | 229,536 | 247,894 | 71,415 |
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Real estate 1-4 family junior lien mortgage [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | 85,991 | 96,149 | 103,708 | 110,164 | 75,565 |
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Credit Card [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | 22,836 | 22,260 | 24,003 | 23,555 | 18,762 |
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Other revolving credit and installment [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | 86,460 | 86,565 | 89,058 | 93,253 | 56,171 |
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Total Consumer [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||
| Loans | $ 424,181 | $ 435,209 | $ 446,305 | $ 474,866 | $ 221,913 |