LOANS AND LEASES (Loans And Leases Outstanding) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Total covered loans acquired	$ 1,809,235	$ 2,362,152
Noncovered loans	11,576,115	11,581,637
Total loans and leases	13,385,350	13,943,789
Percent of Noncovered Loans and Leases To Customers In Medical Related Fields	26.10%	26.50%
Noncovered loans pledged to secure debt obligations	2,570,773	2,492,644
Commercial Mortgage [Member]
Total covered loans acquired	1,054,473	1,260,589
Other Commercial Real Estate [Member]
Total covered loans acquired	107,119	158,394
Residential Mortgage [Member]
Total covered loans acquired	297,926	327,568
Revolving Mortgage [Member]
Total covered loans acquired	38,710	51,552
Commercial and Industrial [Member]
Total covered loans acquired	49,463	113,442
Lease Financing [Member]
Total covered loans acquired	0	57
Commercial Loans [Member]
Total covered loans acquired	1,450,035	1,872,685
Noncovered loans	7,994,495	7,866,572
Commercial Loans [Member] | Construction and Land Development [Member]
Total covered loans acquired	237,906	338,873
Noncovered loans	309,190	381,163
Commercial Loans [Member] | Commercial Mortgage [Member]
Total covered loans acquired	1,054,473	1,260,589
Noncovered loans	5,341,839	5,104,993
Commercial Loans [Member] | Other Commercial Real Estate [Member]
Total covered loans acquired	107,119	158,394
Noncovered loans	160,980	144,771
Commercial Loans [Member] | Commercial and Industrial [Member]
Total covered loans acquired	49,463	113,442
Noncovered loans	1,726,126	1,764,407
Commercial Loans [Member] | Lease Financing [Member]
Total covered loans acquired	0	57
Noncovered loans	330,679	312,869
Commercial Loans [Member] | Other Loans [Member]
Total covered loans acquired	1,074	1,330
Noncovered loans	125,681	158,369
Non-Commercial Loans [Member]
Total covered loans acquired	359,200	489,467
Noncovered loans	3,581,620	3,715,065
Non-Commercial Loans [Member] | Construction and Land Development [Member]
Total covered loans acquired	20,793	105,536
Noncovered loans	131,992	137,271
Non-Commercial Loans [Member] | Residential Mortgage [Member]
Total covered loans acquired	297,926	327,568
Noncovered loans	822,889	784,118
Non-Commercial Loans [Member] | Revolving Mortgage [Member]
Total covered loans acquired	38,710	51,552
Noncovered loans	2,210,133	2,296,306
Non-Commercial Loans [Member] | Consumer [Member]
Total covered loans acquired	1,771	4,811
Noncovered loans	$ 416,606	$ 497,370