Receivable From FDIC For Loss Share Agreements (Changes In Receivable From FDIC) (Details) (USD $) In Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010
Receivable From FDIC For Loss Share Agreements [Abstract]
Balance at beginning of period	$ 522,507		$ 692,242		$ 623,261	[1]	$ 249,842
Additional receivable from acquisitions	159,753		(10,866)		295,053		468,429
Accretion of discounts and premiums, net	1,554		1,252		2,968		3,638
Receipt of payments from FDIC	(27,872)		0		(239,800)		(52,422)
Post-acquisition and other adjustments, net	(48,035)		(30,784)		(73,575)		(17,643)
Balance at September 30	$ 607,907	[2]	$ 651,844	[2]	$ 607,907	[2]	$ 651,844	[2]

[1] Derived from 2010 Annual Report on Form 10-K.

[2] Unaudited