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Loans And Leases (Changes In Carrying Value Of Acquired Impaired Loans) (Details) (USD $) In Thousands	6 Months Ended
	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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Outstanding principal balance of acquired impaired loans

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Fair value of acquired impaired loans covered by loss share agreements

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Reductions for repayments foreclosures and decreases in fair value

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