Loans (Period-End Balances And Various Asset Quality Attributes By Originations Vintage For R/E Installment Loans) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 15,408,556	$ 16,708,582	$ 16,523,783
Real Estate Installment Class [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	2,561,515		2,400,269
Avg orig FICO	746		741
Avg Refreshed FICO	742		733
Real Estate Installment Class [Member] | Origination Vintage Period Pre2003 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	26,603		41,783
Avg orig FICO	682		686
Avg Refreshed FICO	684		686
Real Estate Installment Class [Member] | Origination Vintage Period 2003 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	81,915		122,330
Avg orig FICO	716		721
Avg Refreshed FICO	725		730
Real Estate Installment Class [Member] | Origination Vintage Period 2004 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	58,244		78,439
Avg orig FICO	701		707
Avg Refreshed FICO	699		706
Real Estate Installment Class [Member] | Origination Vintage Period 2005 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	170,742		224,780
Avg orig FICO	717		718
Avg Refreshed FICO	711		713
Real Estate Installment Class [Member] | Origination Vintage Period 2006 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	183,847		244,101
Avg orig FICO	716		719
Avg Refreshed FICO	701		703
Real Estate Installment Class [Member] | Origination Vintage Period 2007 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	264,851		338,306
Avg orig FICO	725		728
Avg Refreshed FICO	709		711
Real Estate Installment Class [Member] | Origination Vintage Period 2008 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	91,883		122,014
Avg orig FICO	723		728
Avg Refreshed FICO	720		720
Real Estate Installment Class [Member] | Origination Vintage Period 2009 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	39,549		67,590
Avg orig FICO	742		748
Avg Refreshed FICO	736		744
Real Estate Installment Class [Member] | Origination Vintage Period 2010 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	131,004		163,618
Avg orig FICO	747		745
Avg Refreshed FICO	754		751
Real Estate Installment Class [Member] | Origination Vintage Period 2011 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	347,315		428,167
Avg orig FICO	761		760
Avg Refreshed FICO	761		759
Real Estate Installment Class [Member] | Origination Vintage Period 2012 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	707,972		569,141
Avg orig FICO	764		765
Avg Refreshed FICO	764		761
Real Estate Installment Class [Member] | Origination Vintage Period 2013 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	$ 457,590
Avg orig FICO	758
Avg Refreshed FICO	754