Loans (Period-End Balances And Various Asset Quality Attributes By Originations Vintage For R/E Installment Loans) (Details)		Mar. 31, 2016 USD ($) number	Dec. 31, 2015 USD ($)	Mar. 31, 2015 USD ($) number
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income | $	[1]	$ 17,574,994,000	$ 17,686,502,000	$ 16,732,123,000
Real Estate Installment Class
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 2,701,150,000		$ 2,558,007,000
Avg orig FICO		751		749
Avg Refreshed FICO		751		747
Real Estate Installment Class | Origination Vintage Period Pre 2003
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 6,145,000		$ 11,786,000
Avg orig FICO		673		679
Avg Refreshed FICO		690		687
Real Estate Installment Class | Origination Vintage Period 2003
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 27,457,000		$ 44,729,000
Avg orig FICO		709		713
Avg Refreshed FICO		720		721
Real Estate Installment Class | Origination Vintage Period 2004
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 27,004,000		$ 37,944,000
Avg orig FICO		697		699
Avg Refreshed FICO		694		695
Real Estate Installment Class | Origination Vintage Period 2005
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 84,140,000		$ 115,702,000
Avg orig FICO		714		715
Avg Refreshed FICO		709		710
Real Estate Installment Class | Origination Vintage Period 2006
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 93,146,000		$ 126,225,000
Avg orig FICO		711		712
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 | $		$ 143,754,000		$ 187,510,000
Avg orig FICO		722		722
Avg Refreshed FICO		709		707
Real Estate Installment Class | Origination Vintage Period 2008
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 48,829,000		$ 60,538,000
Avg orig FICO		718		718
Avg Refreshed FICO		719		712
Real Estate Installment Class | Origination Vintage Period 2009
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 20,564,000		$ 26,812,000
Avg orig FICO		733		737
Avg Refreshed FICO		732		727
Real Estate Installment Class | Origination Vintage Period 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 72,595,000		$ 95,017,000
Avg orig FICO		750		747
Avg Refreshed FICO		755		756
Real Estate Installment Class | Origination Vintage Period 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 216,423,000		$ 267,079,000
Avg orig FICO		761		760
Avg Refreshed FICO		758		759
Real Estate Installment Class | Origination Vintage Period 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 491,925,000		$ 586,729,000
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 | $		$ 402,530,000		$ 460,196,000
Avg orig FICO		755		756
Avg Refreshed FICO		759		758
Real Estate Installment Class | Origination Vintage Period 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 403,306,000		$ 450,765,000
Avg orig FICO		756		756
Avg Refreshed FICO		760		754
Real Estate Installment Class | Origination Vintage Period 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 557,931,000		$ 86,975,000
Avg orig FICO		758		757
Avg Refreshed FICO		757		758
Real Estate Installment Class | Origination Vintage Period 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
R/E Installment Loans- Period End Balance | $		$ 105,401,000		$ 0
Avg orig FICO		763		0
Avg Refreshed FICO		762		0

[1] March 31, 2016 and 2015 and December 31, 2015 include $31.2 million , $28.0 million and $29.7 million, respectively, of held-to-maturity consumer mortgage loans secured by residential real estate properties in process of foreclosure.