Finance Receivables (Allowance For Credit Losses And Finance Receivables By Portfolio, Individually And Collectively Evaluated For Impairment) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	$ 0	$ 0
Collectively evaluated for impairment	110,693	107,667
Total allowance for credit losses	110,693	107,667	125,449	173,589	150,082
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	6,110,256	5,889,519
Total finance receivables	6,110,256	5,889,519	5,912,130	6,191,158	4,961,894
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	106,063	101,442
Total allowance for credit losses	106,063	101,442	116,112	157,791
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	5,265,044	5,073,115
Total finance receivables	5,265,044	5,073,115	5,087,490	5,377,161	4,091,893
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	4,630	6,225
Total allowance for credit losses	4,630	6,225	9,337	15,798
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	845,212	816,404
Total finance receivables	$ 845,212	$ 816,404	$ 824,640	$ 813,997	$ 870,001