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Loans and Leases (Aging Of The Outstanding Loans And Leases By Class Excluding Loans Impaired At Acquisition Date) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2012 | Dec. 31, 2011 | Mar. 31, 2011
--- | --- | --- | ---
Total Loans and Leases | $ 11,489,529 | [1] | $ 11,581,637 | [2] | $ 11,392,351 | [1]
Commercial Mortgage [Member] |  |  |  |  |  |
Total Loans and Leases | 7,830,041 |  | 7,866,572 |  | 7,546,718 |
Commercial Mortgage [Member] | Construction and Land Development [Member] |  |  |  |  |  |
Total Loans and Leases | 346,557 |  | 381,163 |  | 373,769 |
Commercial Mortgage [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Total Loans and Leases | 1,739,724 |  | 1,764,407 |  | 1,792,042 |
Commercial Mortgage [Member] | Other Commercial Real Estate [Member] |  |  |  |  |  |
Total Loans and Leases | 150,316 |  | 144,771 |  | 147,150 |
Commercial Mortgage [Member] | Commercial And Industrial [Member] |  |  |  |  |  |
Total Loans and Leases | 1,739,724 |  | 1,764,407 |  | 1,792,042 |
Commercial Mortgage [Member] | Lease Financing [Member] |  |  |  |  |  |
Total Loans and Leases | 315,704 |  | 312,869 |  | 295,994 |
Commercial Mortgage [Member] | Other Loans [Member] |  |  |  |  |  |
Total Loans and Leases | 149,792 |  | 158,369 |  | 174,370 |
Non-Commercial Loans [Member] |  |  |  |  |  |
Total Loans and Leases | 3,659,488 |  | 3,715,065 |  | 3,845,633 |
Non-Commercial Loans [Member] | Construction and Land Development [Member] |  |  |  |  |  |
Total Loans and Leases | 132,677 |  | 137,271 |  | 145,864 |
Non-Commercial Loans [Member] | Residential Mortgage [Member] |  |  |  |  |  |
Total Loans and Leases | 793,612 |  | 784,118 |  | 808,650 |
Non-Commercial Loans [Member] | Revolving Mortgage [Member] |  |  |  |  |  |
Total Loans and Leases | 2,282,138 |  | 2,296,306 |  | 2,299,668 |
Non-Commercial Loans [Member] | Consumer [Member] |  |  |  |  |  |
Total Loans and Leases | 451,061 |  | 497,370 |  | 591,451 |
Noncovered Loans [Member] |  |  |  |  |  |
31-60 days past due | 56,153 |  | 46,999 |  | 59,957 |
61-90 days past due | 14,560 |  | 13,647 |  | 14,290 |
Greater Than 90 Days | 40,906 |  | 39,282 |  | 47,770 |
Total Past Due | 111,619 |  | 99,928 |  | 122,017 |
Current | 11,377,910 |  | 11,481,709 |  | 11,270,334 |
Total Loans and Leases | 11,489,529 |  | 11,581,637 |  | 11,392,351 |
Noncovered Loans [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
31-60 days past due | 27,947 |  | 18,308 |  | 21,304 |
61-90 days past due | 6,548 |  | 4,438 |  | 4,576 |
Greater Than 90 Days | 13,939 |  | 15,626 |  | 19,091 |
Total Past Due | 48,434 |  | 38,372 |  | 44,971 |
Current | 5,079,514 |  | 5,066,621 |  | 4,718,422 |
Total Loans and Leases | 5,127,948 |  | 5,104,993 |  | 4,763,393 |
Noncovered Loans [Member] | Other Commercial Real Estate [Member] |  |  |  |  |  |
31-60 days past due | 787 |  | 657 |  | 860 |
61-90 days past due | 43 |  | 147 |  | 147 |
Greater Than 90 Days | 193 |  | 561 |  | 585 |
Total Past Due | 1,023 |  | 1,365 |  | 1,592 |
Current | 149,293 |  | 143,406 |  | 145,558 |
Total Loans and Leases | 150,316 |  | 144,771 |  | 147,150 |
Noncovered Loans [Member] | Commercial And Industrial [Member] |  |  |  |  |  |
31-60 days past due | 5,522 |  | 5,235 |  | 5,016 |
61-90 days past due | 1,006 |  | 1,230 |  | 1,110 |
Greater Than 90 Days | 1,754 |  | 1,438 |  | 4,700 |
Total Past Due | 8,282 |  | 7,903 |  | 10,826 |
Current | 1,731,442 |  | 1,756,504 |  | 1,781,216 |
Total Loans and Leases | 1,739,724 |  | 1,764,407 |  | 1,792,042 |
Noncovered Loans [Member] | Lease Financing [Member] |  |  |  |  |  |
31-60 days past due | 824 |  | 637 |  | 841 |
61-90 days past due | 99 |  | 212 |  | 269 |
Greater Than 90 Days | 1,269 |  | 620 |  | 864 |
Total Past Due | 2,192 |  | 1,469 |  | 1,974 |
Current | 313,512 |  | 311,400 |  | 294,020 |
Total Loans and Leases | 315,704 |  | 312,869 |  | 295,994 |
Noncovered Loans [Member] | Other Loans [Member] |  |  |  |  |  |
31-60 days past due | 0 |  | 0 |  | 2 |
61-90 days past due | 0 |  | 0 |  | 0 |
Greater Than 90 Days | 0 |  | 0 |  | 0 |
Total Past Due | 0 |  | 0 |  | 2 |
Current | 149,792 |  | 158,369 |  | 174,368 |
Total Loans and Leases | 149,792 |  | 158,369 |  | 174,370 |
Noncovered Loans [Member] | Residential Mortgage [Member] |  |  |  |  |  |
31-60 days past due | 14,001 |  | 11,790 |  | 16,439 |
61-90 days past due | 2,812 |  | 2,686 |  | 2,207 |
Greater Than 90 Days | 13,388 |  | 12,529 |  | 12,022 |
Total Past Due | 30,201 |  | 27,005 |  | 30,668 |
Current | 763,411 |  | 757,113 |  | 777,982 |
Total Loans and Leases | 793,612 |  | 784,118 |  | 808,650 |
Noncovered Loans [Member] | Revolving Mortgage [Member] |  |  |  |  |  |
31-60 days past due | 2,349 |  | 3,437 |  | 5,462 |
61-90 days past due | 1,212 |  | 2,042 |  | 3,285 |
Greater Than 90 Days | 4,486 |  | 4,316 |  | 3,195 |
Total Past Due | 8,047 |  | 9,795 |  | 11,942 |
Current | 2,274,091 |  | 2,286,511 |  | 2,287,726 |
Total Loans and Leases | 2,282,138 |  | 2,296,306 |  | 2,299,668 |
Noncovered Loans [Member] | Consumer [Member] |  |  |  |  |  |
31-60 days past due | 1,885 |  | 3,514 |  | 6,911 |
61-90 days past due | 1,028 |  | 1,271 |  | 2,216 |
Greater Than 90 Days | 1,727 |  | 1,443 |  | 1,780 |
Total Past Due | 4,640 |  | 6,228 |  | 10,907 |
Current | 446,421 |  | 491,142 |  | 580,544 |
Total Loans and Leases | 451,061 |  | 497,370 |  | 591,451 |
Noncovered Loans [Member] | Commercial Mortgage [Member] | Construction and Land Development [Member] |  |  |  |  |  |
31-60 days past due | 2,030 |  | 2,623 |  | 2,006 |
61-90 days past due | 1,366 |  | 1,494 |  | 116 |
Greater Than 90 Days | 3,288 |  | 2,177 |  | 3,572 |
Total Past Due | 6,684 |  | 6,294 |  | 5,694 |
Current | 339,873 |  | 374,869 |  | 368,075 |
Total Loans and Leases | 346,557 |  | 381,163 |  | 373,769 |
Noncovered Loans [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Total Loans and Leases | 3,659,488 |  | 3,715,065 |  | 3,845,633 |
Noncovered Loans [Member] | Non-Commercial Loans [Member] | Construction and Land Development [Member] |  |  |  |  |  |
31-60 days past due | 808 |  | 798 |  | 1,116 |
61-90 days past due | 446 |  | 127 |  | 364 |
Greater Than 90 Days | 862 |  | 572 |  | 1,961 |
Total Past Due | 2,116 |  | 1,497 |  | 3,441 |
Current | 130,561 |  | 135,774 |  | 142,423 |
Total Loans and Leases | 132,677 |  | 137,271 |  | 145,864 |
Noncovered Loans [Member] | Non-Commercial Loans [Member] | Residential Mortgage [Member] |  |  |  |  |  |
Total Loans and Leases | 793,612 |  | 784,118 |  | 808,650 |
Noncovered Loans [Member] | Non-Commercial Loans [Member] | Revolving Mortgage [Member] |  |  |  |  |  |
Total Loans and Leases | 2,282,138 |  | 2,296,306 |  | 2,299,668 |
Noncovered Loans [Member] | Non-Commercial Loans [Member] | Consumer [Member] |  |  |  |  |  |
Total Loans and Leases | $ 451,061 |  | $ 497,370 |  | $ 591,451 |
[1] | Unaudited
[2] | Derived from 2011 Annual Report on Form 10-K.

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- Definition Financing receivables that are less than 61 days past due but more than 30 days past due. + References No definition available. + Details
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- Definition Financing receivables that are less than 91 days past due but more than 60 days past due. + References No definition available. + Details
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- Definition Reflects the aggregate gross carrying amount of all categories of loans and leases held in portfolio, prior to deducting deferred income and the allowance for losses on loans and leases. These loans are not covered under loss share agreements with the FDIC since not acquired in FDIC-assisted transaction. + References No definition available. + Details
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- Definition Financing receivables that are current. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953401-111524 + Details
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- Definition Recorded Investment in financing receivables that are past due at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953401-111524 + Details
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