Finance Receivables (Changes In The Allowance For Finance Credit Losses On Finance Receivables) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan and Lease Losses	$ 22,239	$ 17,031	$ 93,118
Allowance related to newly consolidated finance receivables			49,424
Charge-offs	87,062	119,496	119,035
Recoveries	47,041	54,325
Loans and Leases Receivable, Allowance	107,667	125,449	173,589	150,082	40,068
Retail [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan and Lease Losses	25,252	23,054
Charge-offs	86,963	118,993
Recoveries	47,041	54,260
Loans and Leases Receivable, Allowance	101,442	116,112	157,791
Wholesale [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan and Lease Losses	(3,013)	(6,023)
Charge-offs	99	503
Recoveries	0	65
Loans and Leases Receivable, Allowance	$ 6,225	$ 9,337	$ 15,798