LOANS AND LEASES (Loans And Leases Outstanding) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Percent of Noncovered Loans and Leases To Customers In Medical Related Fields	26.50%		26.30%
Total covered loans acquired	$ 2,362,152	[1]	$ 2,007,452	[1]
Noncovered loans	11,581,637		11,480,577
Total loans and leases	13,943,789		13,488,029
Noncovered loans pledged to secure debt obligations	2,492,644		3,744,067
Commercial Loans [Member]
Total covered loans acquired	1,872,685		1,802,132
Noncovered loans	7,866,572		7,579,295
Commercial Loans [Member] | Construction And Land Development [Member]
Total covered loans acquired	338,873		368,420
Noncovered loans	381,163		338,929
Commercial Loans [Member] | Commercial Mortgage [Member]
Total covered loans acquired	1,260,589		1,089,064
Noncovered loans	5,104,993		4,737,862
Commercial Loans [Member] | Other Commercial Real Estate [Member]
Total covered loans acquired	158,394		210,661
Noncovered loans	144,771		149,710
Commercial Loans [Member] | Commercial And Industrial [Member]
Total covered loans acquired	113,442		132,477
Noncovered loans	1,764,407		1,869,490
Commercial Loans [Member] | Lease Financing [Member]
Total covered loans acquired	57		0
Noncovered loans	312,869		301,289
Commercial Loans [Member] | Other Loans [Member]
Total covered loans acquired	1,330		1,510
Noncovered loans	158,369		182,015
Non-Commercial Loans [Member]
Total covered loans acquired	489,467		205,320
Noncovered loans	3,715,065		3,901,282
Non-Commercial Loans [Member] | Construction And Land Development [Member]
Total covered loans acquired	105,536		105,805
Noncovered loans	137,271		192,954
Non-Commercial Loans [Member] | Residential Mortgage [Member]
Total covered loans acquired	327,568		74,495
Noncovered loans	784,118		878,792
Non-Commercial Loans [Member] | Revolving Mortgage [Member]
Total covered loans acquired	51,552		17,866
Noncovered loans	2,296,306		2,233,853
Non-Commercial Loans [Member] | Consumer [Member]
Total covered loans acquired	4,811		7,154
Noncovered loans	$ 497,370		$ 595,683

[1] Covered loans are acquired loans subject to loss share agreements with the FDIC.