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	9 Months Ended				9 Months Ended																														9 Months Ended
	Sep. 30, 2011		Jun. 04, 2011	Dec. 31, 2010	Sep. 30, 2011 Allowance For Loan Losses [Member]		Sep. 30, 2010 Allowance For Loan Losses [Member]	Sep. 30, 2011 Allowance For Loan Losses [Member] Residential Mortgages [Member]		Sep. 30, 2010 Allowance For Loan Losses [Member] Residential Mortgages [Member]	Sep. 30, 2011 Allowance For Loan Losses [Member] Commercial [Member]		Sep. 30, 2010 Allowance For Loan Losses [Member] Commercial [Member]	Sep. 30, 2011 Allowance For Loan Losses [Member] Finance Company [Member]		Sep. 30, 2010 Allowance For Loan Losses [Member] Finance Company [Member]	Sep. 30, 2011 Allowance For Loan Losses [Member] Direct Consumer [Member]		Sep. 30, 2010 Allowance For Loan Losses [Member] Direct Consumer [Member]	Sep. 30, 2011 Allowance For Loan Losses [Member] Indirect Consumer [Member]		Sep. 30, 2010 Allowance For Loan Losses [Member] Indirect Consumer [Member]	Sep. 30, 2011 Purchased Loans [Member]	Sep. 30, 2010 Purchased Loans [Member]	Sep. 30, 2011 Purchased Loans [Member] Residential Mortgages [Member]	Sep. 30, 2010 Purchased Loans [Member] Residential Mortgages [Member]	Sep. 30, 2011 Purchased Loans [Member] Commercial [Member]	Sep. 30, 2010 Purchased Loans [Member] Commercial [Member]	Sep. 30, 2011 Purchased Loans [Member] Finance Company [Member]	Sep. 30, 2010 Purchased Loans [Member] Finance Company [Member]	Sep. 30, 2011 Purchased Loans [Member] Direct Consumer [Member]	Sep. 30, 2010 Purchased Loans [Member] Direct Consumer [Member]	Sep. 30, 2011 Purchased Loans [Member] Indirect Consumer [Member]	Sep. 30, 2010 Purchased Loans [Member] Indirect Consumer [Member]	Sep. 30, 2011 Commercial [Member]		Sep. 30, 2011 Residential Mortgages [Member]		Sep. 30, 2011 Direct Consumer [Member]		Sep. 30, 2011 FDIC [Member]
Mortgage Loans on Real Estate [Line Items]
Beginning balance	$ 81,997				$ 81,997		$ 66,050	$ 4,626		$ 4,782	$ 56,859		$ 42,484	$ 8,272		$ 7,813	$ 9,322		$ 7,145	$ 2,918		$ 3,826	$ 11,102,269	$ 4,907,697	$ 1,451,506	$ 693,862	$ 8,075,247	$ 3,068,415	$ 96,117	$ 101,406	$ 1,192,431	$ 721,513	$ 286,968	$ 322,501
Charge-offs					(36,601)		(46,644)	(1,774)		(3,211)	(25,597)		(32,687)	(3,236)		(4,396)	(4,498)		(3,876)	(1,496)		(2,474)
Recoveries					13,720		5,718	1,044		360	9,863		2,772	831		714	1,255		1,024	727		848
Net Provision for loan losses	1,700				27,220	[1]	54,601	5,286	[1]	3,603	18,841	[1]	41,426	1,503	[1]	4,462	1,218	[1]	3,921	372	[1]	1,189
Increase (decrease) in indemnification asset					31,777	[1]					19,583	[1]					12,194	[1]
Ending balance	118,113				118,113		79,725	9,182		5,534	79,549		53,995	7,370		8,593	19,491		8,214	2,521		3,389	11,102,269	4,907,697	1,451,506	693,862	8,075,247	3,068,415	96,117	101,406	1,192,431	721,513	286,968	322,501
Ending balance: Individually evaluated for impairment					6,600		10,227	641		1,091	5,959		9,136										49,516	71,162	5,199	5,643	44,317	65,519
Ending balance: Collectively evaluated for impairment					111,513		69,498	8,541		4,443	73,590		44,859	7,370		8,593	19,491		8,214	2,521		3,389	10,330,922	4,002,584	1,184,061	364,946	7,728,970	2,616,209	96,117	101,406	1,034,806	597,522	286,968	322,501
Ending balance: Covered loans with deteriorated credit quality	34,100		536,833	45,300	33,747						20,911						12,836						721,831	833,951	262,246	323,273	301,960	386,687			157,625	123,991									(1,671)
Impairment of covered loans																																									33,448
Acquired loans	$ 5,847,718	[2]																																	$ 4,653,996	[2]	$ 776,993	[2]	$ 416,729	[2]

[1] 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 ($1,671), and the impairment $33,448 on those covered loans.

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