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Loans And Leases (Changes In Carrying Value Of Acquired Impaired Loans) (Details) (USD $) In Thousands | 6 Months Ended
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Jun. 30, 2011 | Jun. 30, 2010
Impaired At Acquisition Date [Member] |  |
Beginning balance | $ 330,705 | $ 75,368
Fair value of acquired loans covered by loss share agreements | 99,344 | 412,627
Reductions for repayments foreclosures and decreases in fair value | (119,650) | (115,878)
Ending balance | 310,399 | 372,117
Outstanding principal balance at June 30 | 1,100,257 | 807,288
All Other Acquired Loans [Member] |  |
Beginning balance | 1,676,747 | 1,097,652
Fair value of acquired loans covered by loss share agreements | 660,007 | 1,152,134
Reductions for repayments foreclosures and decreases in fair value | (247,415) | (254,813)
Ending balance | 2,089,339 | 1,994,973
Outstanding principal balance at June 30 | $ 2,937,273 | $ 2,726,588

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