LOANS AND LEASES (Aging Of The Outstanding Loans And Leases By Class Excluding Loans Impaired At Acquisition Date) (Details) (Noncovered Loans [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
31-60 days past due	$ 46,999
61-90 days past due	13,647
Greater Than 90 Days	39,282
Total Past Due	99,928
Current	11,481,709
Total Loans and Leases	11,581,637
Commercial Mortgage [Member]
31-60 days past due	18,308	22,913
61-90 days past due	4,438	7,521
Greater Than 90 Days	15,626	20,425
Total Past Due	38,372	50,859
Current	5,066,621	4,687,003
Total Loans and Leases	5,104,993
Other Commercial Real Estate [Member]
31-60 days past due	657	35
61-90 days past due	147	290
Greater Than 90 Days	561	621
Total Past Due	1,365	946
Current	143,406	148,764
Total Loans and Leases	144,771
Commercial And Industrial [Member]
31-60 days past due	5,235	4,434
61-90 days past due	1,230	1,473
Greater Than 90 Days	1,438	3,744
Total Past Due	7,903	9,651
Current	1,756,504	1,859,839
Total Loans and Leases	1,764,407
Lease Financing [Member]
31-60 days past due	637	2,266
61-90 days past due	212	141
Greater Than 90 Days	620	630
Total Past Due	1,469	3,037
Current	311,400	298,252
Total Loans and Leases	312,869
Other Loans [Member]
31-60 days past due	0	40
61-90 days past due	0	75
Greater Than 90 Days	0	0
Total Past Due	0	115
Current	158,369	181,900
Total Loans and Leases	158,369
Residential Mortgage [Member]
31-60 days past due	11,790	13,051
61-90 days past due	2,686	4,762
Greater Than 90 Days	12,529	20,651
Total Past Due	27,005	38,464
Current	757,113	840,328
Total Loans and Leases	784,118
Revolving Mortgage [Member]
31-60 days past due	3,437	3,682
61-90 days past due	2,042	1,424
Greater Than 90 Days	4,316	2,320
Total Past Due	9,795	7,426
Current	2,286,511	2,226,427
Total Loans and Leases	2,296,306
Consumer [Member]
31-60 days past due	3,514	12,798
61-90 days past due	1,271	2,611
Greater Than 90 Days	1,443	1,047
Total Past Due	6,228	16,456
Current	491,142	579,227
Total Loans and Leases	497,370
Commercial Loans [Member] | Construction And Land Development [Member]
31-60 days past due	2,623	3,047
61-90 days past due	1,494	6,092
Greater Than 90 Days	2,177	4,208
Total Past Due	6,294	13,347
Current	374,869	325,582
Total Loans and Leases	381,163
Non-Commercial Loans [Member]
31-60 days past due	19,539	30,976
61-90 days past due	6,126	9,345
Greater Than 90 Days	18,860	27,061
Current	3,670,540	3,833,900
Total Loans and Leases	3,715,065	3,901,282
Non-Commercial Loans [Member] | Construction And Land Development [Member]
31-60 days past due	798	1,445
61-90 days past due	127	548
Greater Than 90 Days	572	3,043
Total Past Due	1,497	5,036
Current	135,774	187,918
Total Loans and Leases	137,271	192,954
Non-Commercial Loans [Member] | Residential Mortgage [Member]
31-60 days past due	11,790	13,051
61-90 days past due	2,686	4,762
Greater Than 90 Days	12,529	20,651
Current	757,113	840,328
Total Loans and Leases	784,118	878,792
Non-Commercial Loans [Member] | Revolving Mortgage [Member]
31-60 days past due	3,437	3,682
61-90 days past due	2,042	1,424
Greater Than 90 Days	4,316	2,320
Current	2,286,511	2,226,427
Total Loans and Leases	2,296,306	2,233,853
Non-Commercial Loans [Member] | Consumer [Member]
31-60 days past due	3,514	12,798
61-90 days past due	1,271	2,611
Greater Than 90 Days	1,443	1,047
Current	491,142	579,227
Total Loans and Leases	$ 497,370	$ 595,683