Loans And Allowance For Loan Losses (Summary Of Age Analysis Of Past Due Loans) (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
30-89 days past due	$ 40,908	$ 41,071
Greater than 90 days past due	121,702	122,477
Total past due	162,610	163,548
Current	11,086,443	4,793,616
Total Loans	11,249,053	4,957,164
Recorded investment > 90 days and accruing	4,057	1,492
Commercial - Originated [Member]
30-89 days past due	12,600
Greater than 90 days past due	39,506
Total past due	52,106
Current	2,775,243
Total Loans	2,827,349
Recorded investment > 90 days and accruing	1,909
Commercial Loan [Member]
30-89 days past due		12,463
Greater than 90 days past due		41,967
Total past due		54,430
Current		2,706,363
Total Loans		2,760,793
Recorded investment > 90 days and accruing		300
Commercial - Restructured [Member]
Greater than 90 days past due	8,410	8,712
Total past due	8,410	8,712
Current	10,196	3,929
Total Loans	18,606	12,641
Commercial - Acquired [Member]
Current	5,040,123
Total Loans	5,040,123
Commercial - Covered [Member]
Greater than 90 days past due	33,869	41,917
Total past due	33,869	41,917
Current	313,572	332,414
Total Loans	347,441	374,331
Residential Mortgages [Member]
30-89 days past due		22,109
Greater than 90 days past due		19,573
Total past due		41,682
Current		324,502
Total Loans		366,184
Recorded investment > 90 days and accruing		874
Residential Mortgages - Originated [Member]
30-89 days past due	21,481
Greater than 90 days past due	27,942
Total past due	49,423
Current	316,238
Total Loans	365,661
Recorded investment > 90 days and accruing	530
Residential Mortgages - Acquired [Member]
Current	830,667
Total Loans	830,667
Residential Mortgages - Covered [Member]
Greater than 90 days past due	2,710	3,199
Total past due	2,710	3,199
Current	244,779	290,306
Total Loans	247,489	293,505
Indirect Consumer - Originated [Member]
Current	278,261
Total Loans	278,261
Indirect Consumer [Member]
Current		309,454
Total Loans		309,454
Direct Consumer [Member]
30-89 days past due		4,488
Greater than 90 days past due		5,180
Total past due		9,668
Current		588,279
Total Loans		597,947
Recorded investment > 90 days and accruing		318
Direct Consumer - Originated [Member]
30-89 days past due	2,311
Greater than 90 days past due	2,002
Total past due	4,313
Current	593,280
Total Loans	597,593
Recorded investment > 90 days and accruing	65
Direct Consumer - Acquired [Member]
30-89 days past due	1,776
Greater than 90 days past due	3,057
Total past due	4,833
Current	442,263
Total Loans	447,096
Recorded investment > 90 days and accruing	1,553
Direct Consumer - Covered [Member]
Greater than 90 days past due	2,935	170
Total past due	2,935	170
Current	149,944	141,145
Total Loans	152,879	141,315
Finance Company [Member]
30-89 days past due	2,740	2,011
Greater than 90 days past due	1,271	1,759
Total past due	4,011	3,770
Current	91,877	97,224
Total Loans	$ 95,888	$ 100,994