Loans (Period-End Balances And Various Asset Quality Attributes By Originations Vintage For R/E Installment Loans) (Details)	Jun. 30, 2015 USD ($) number		Dec. 31, 2014 USD ($)	Jun. 30, 2014 USD ($) number
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income | $	$ 16,936,772,000	[1]	$ 16,230,166,000	$ 15,795,709,000
Real Estate Installment Class
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 2,607,771,000			$ 2,552,840,000
Avg orig FICO	749			747
Avg Refreshed FICO	748			744
Real Estate Installment Class | Origination Vintage Period Pre 2003
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 10,180,000			$ 18,623,000
Avg orig FICO	678			680
Avg Refreshed FICO	686			683
Real Estate Installment Class | Origination Vintage Period 2003
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 39,996,000			$ 62,823,000
Avg orig FICO	713			713
Avg Refreshed FICO	722			724
Real Estate Installment Class | Origination Vintage Period 2004
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 34,944,000			$ 47,502,000
Avg orig FICO	698			700
Avg Refreshed FICO	697			699
Real Estate Installment Class | Origination Vintage Period 2005
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 106,185,000			$ 141,545,000
Avg orig FICO	715			716
Avg Refreshed FICO	711			712
Real Estate Installment Class | Origination Vintage Period 2006
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 116,730,000			$ 156,538,000
Avg orig FICO	712			714
Avg Refreshed FICO	704			702
Real Estate Installment Class | Origination Vintage Period 2007
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 175,807,000			$ 224,425,000
Avg orig FICO	722			724
Avg Refreshed FICO	708			709
Real Estate Installment Class | Origination Vintage Period 2008
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 56,222,000			$ 74,106,000
Avg orig FICO	719			721
Avg Refreshed FICO	712			714
Real Estate Installment Class | Origination Vintage Period 2009
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 24,999,000			$ 33,506,000
Avg orig FICO	736			739
Avg Refreshed FICO	727			732
Real Estate Installment Class | Origination Vintage Period 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 82,230,000			$ 113,437,000
Avg orig FICO	750			748
Avg Refreshed FICO	760			754
Real Estate Installment Class | Origination Vintage Period 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 254,298,000			$ 309,172,000
Avg orig FICO	760			760
Avg Refreshed FICO	759			759
Real Estate Installment Class | Origination Vintage Period 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 562,078,000			$ 653,179,000
Avg orig FICO	764			764
Avg Refreshed FICO	765			765
Real Estate Installment Class | Origination Vintage Period 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 443,257,000			$ 497,720,000
Avg orig FICO	755			757
Avg Refreshed FICO	757			756
Real Estate Installment Class | Origination Vintage Period 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 439,744,000			$ 220,264,000
Avg orig FICO	756			756
Avg Refreshed FICO	755			754
Real Estate Installment Class | Origination Vintage Period 2015 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $	$ 261,101,000			$ 0
Avg orig FICO	757			0
Avg Refreshed FICO	756			0

[1] June 30, 2015 includes $28.3 million of held-to-maturity consumer mortgage loans secured by residential real estate in process of foreclosure.