Loans (Period-End Balances And Various Asset Quality Attributes By Originations Vintage For R/E Installment Loans) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 15,119,461	$ 15,389,074	$ 15,889,670
Real Estate Installment Class [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	2,510,197		2,481,606
Avg orig FICO	746		744
Avg Refreshed FICO	743		739
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	21,069		33,454
Avg orig FICO	681		685
Avg Refreshed FICO	687		682
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	68,747		101,107
Avg orig FICO	715		719
Avg Refreshed FICO	724		727
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	51,187		66,809
Avg orig FICO	701		703
Avg Refreshed FICO	699		701
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	150,669		197,153
Avg orig FICO	716		717
Avg Refreshed FICO	711		711
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	165,515		209,755
Avg orig FICO	715		718
Avg Refreshed FICO	700		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	236,727		299,659
Avg orig FICO	724		726
Avg Refreshed FICO	708		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	80,067		104,651
Avg orig FICO	722		725
Avg Refreshed FICO	718		716
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	37,048		53,302
Avg orig FICO	742		746
Avg Refreshed FICO	733		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	120,128		146,048
Avg orig FICO	748		746
Avg Refreshed FICO	754		750
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	323,992		390,546
Avg orig FICO	760		760
Avg Refreshed FICO	759		761
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	675,368		741,406
Avg orig FICO	764		764
Avg Refreshed FICO	765		762
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	509,103		137,716
Avg orig FICO	757		761
Avg Refreshed FICO	753		759
Real Estate Installment Class [Member] | Origination Vintage Period 2014 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance	$ 70,577		$ 0
Avg orig FICO	756		0
Avg Refreshed FICO	750		0