Loans And Allowance For Loan Losses (Summary Of Allowance For Loan Losses, Amounts Charged-Off And Recoveries Of Loans Previously Charged-Off) (Details) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010
Beginning balance	$ 81,997
Net Provision for loan losses	1,400
Ending balance	112,407
Ending balance: Covered loans with deteriorated credit quality	536,833
Acquired loans	6,317,886	[1]
Allowance For Loan Losses [Member]
Beginning balance	81,997		66,050
Charge-offs	(22,072)		(30,158)
Recoveries	7,014		2,986
Net Provision for loan losses	17,966	[2]	38,343
Increase in indemnification asset	27,502	[2]
Ending balance	112,407		77,221
Ending balance: Individually evaluated for impairment	10,888		11,973
Ending balance: Collectively evaluated for impairment	101,519		65,248
Ending balance: Covered loans with deteriorated credit quality	29,247
Allowance For Loan Losses [Member] | Residential Mortgages [Member]
Beginning balance	4,626		4,782
Charge-offs	(2,332)		(1,322)
Recoveries	960		145
Net Provision for loan losses	6,449	[2]	1,453
Increase in indemnification asset	3,864	[2]
Ending balance	13,567		5,058
Ending balance: Individually evaluated for impairment	1,420		828
Ending balance: Collectively evaluated for impairment	12,147		4,230
Ending balance: Covered loans with deteriorated credit quality	4,485
Allowance For Loan Losses [Member] | Commercial Loan [Member]
Beginning balance	56,859		42,484
Charge-offs	(13,664)		(21,886)
Recoveries	4,274		1,111
Net Provision for loan losses	11,884	[2]	32,322
Increase in indemnification asset	19,378	[2]
Ending balance	78,731		54,031
Ending balance: Individually evaluated for impairment	9,468		11,145
Ending balance: Collectively evaluated for impairment	69,263		42,886
Ending balance: Covered loans with deteriorated credit quality	20,398
Allowance For Loan Losses [Member] | Finance Company [Member]
Beginning balance	8,272		7,813
Charge-offs	(2,086)		(2,818)
Recoveries	575		504
Net Provision for loan losses	1,299	[2]	2,751
Ending balance	8,060		8,250
Ending balance: Collectively evaluated for impairment	8,060		8,250
Ending balance: Covered loans with deteriorated credit quality
Allowance For Loan Losses [Member] | Direct Consumer [Member]
Beginning balance	9,322		7,145
Charge-offs	(3,069)		(2,538)
Recoveries	686		689
Net Provision for loan losses	(1,758)	[2]	1,334
Increase in indemnification asset	4,260	[2]
Ending balance	9,441		6,630
Ending balance: Collectively evaluated for impairment	9,441		6,630
Ending balance: Covered loans with deteriorated credit quality	4,364
Allowance For Loan Losses [Member] | Indirect Consumer [Member]
Beginning balance	2,918		3,826
Charge-offs	(921)		(1,594)
Recoveries	519		537
Net Provision for loan losses	92	[2]	483
Ending balance	2,608		3,252
Ending balance: Collectively evaluated for impairment	2,608		3,252
Ending balance: Covered loans with deteriorated credit quality
Purchased Loans [Member]
Ending balance	11,249,053		4,972,202
Ending balance: Individually evaluated for impairment	55,859		74,493
Ending balance: Collectively evaluated for impairment	10,445,385		4,040,942
Ending balance: Covered loans with deteriorated credit quality	747,809		856,767
Purchased Loans [Member] | Residential Mortgages [Member]
Ending balance	1,443,817		751,259
Ending balance: Individually evaluated for impairment	7,677		4,722
Ending balance: Collectively evaluated for impairment	1,188,651		442,643
Ending balance: Covered loans with deteriorated credit quality	247,489		303,894
Purchased Loans [Member] | Commercial Loan [Member]
Ending balance	8,233,519		3,042,654
Ending balance: Individually evaluated for impairment	48,182		69,771
Ending balance: Collectively evaluated for impairment	7,837,896		2,604,343
Ending balance: Covered loans with deteriorated credit quality	347,441		368,540
Purchased Loans [Member] | Finance Company [Member]
Ending balance	95,888		105,513
Ending balance: Collectively evaluated for impairment	95,888		105,513
Purchased Loans [Member] | Direct Consumer [Member]
Ending balance	1,197,568		743,118
Ending balance: Collectively evaluated for impairment	1,044,689		558,785
Ending balance: Covered loans with deteriorated credit quality	152,879		184,333
Purchased Loans [Member] | Indirect Consumer [Member]
Ending balance	278,261		329,658
Ending balance: Collectively evaluated for impairment	278,261		329,658
Commercial Loan [Member]
Acquired loans	5,040,123	[1]
Residential Mortgages [Member]
Acquired loans	830,667	[1]
Direct Consumer [Member]
Acquired loans	447,096	[1]
FDIC [Member]
Ending balance: Covered loans with deteriorated credit quality	28,948
Impairment of covered loans	$ (1,446)

[1] Acquired loans are recorded at fair value with no allowance brought forward in accordance with acquisition accounting.

[2] The provision for loan losses is shown "net" after coverage provided by FDIC loss share agreements on covered loans. This results in an increase in the indemnification asset, which is the difference between the provision for loan losses on covered loans of $28,948, and the impairment ($1,446) on those covered loans.