Finance Receivables (Aging Of Past Due Finance Receivables Including Non-Accrual Status Finance Receivables) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	$ 5,938,648	$ 5,709,381
31-60 Days Past Due	110,597	114,588
61-90 Days Past Due	36,210	37,517
Greater than 90 Days Past Due	24,801	28,033
Total Past Due	171,608	180,138
Total finance receivables	6,110,256	5,889,519	5,912,130	6,191,158	4,961,894
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	5,094,615	4,894,675
31-60 Days Past Due	109,806	113,604
61-90 Days Past Due	36,029	37,239
Greater than 90 Days Past Due	24,594	27,597
Total Past Due	170,429	178,440
Total finance receivables	5,265,044	5,073,115	5,087,490	5,377,161	4,091,893
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	844,033	814,706
31-60 Days Past Due	791	984
61-90 Days Past Due	181	278
Greater than 90 Days Past Due	207	436
Total Past Due	1,179	1,698
Total finance receivables	$ 845,212	$ 816,404	$ 824,640	$ 813,997	$ 870,001