Debt (Schedule Of Outstanding Term ABS Financings) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Term ABS 2010-1 [Member]
Debt Instrument [Line Items]
Close Date	Nov. 04, 2010
Net Book Value of Dealer Loans Contributed at Closing	$ 126.8
Debt instrument revolving period	24 months
Debt maturity date	Oct. 15, 2012	[1],[2]
Term ABS 2011-1 [Member]
Debt Instrument [Line Items]
Close Date	Oct. 06, 2011
Net Book Value of Dealer Loans Contributed at Closing	250.8
Debt instrument revolving period	24 months
Debt maturity date	Sep. 16, 2013	[1],[2]
Term ABS 2012-1 [Member]
Debt Instrument [Line Items]
Close Date	Mar. 29, 2012
Net Book Value of Dealer Loans Contributed at Closing	251.7
Debt instrument revolving period	24 months
Debt maturity date	Mar. 17, 2014	[1],[2]
Term ABS 2012-2 [Member]
Debt Instrument [Line Items]
Close Date	Sep. 20, 2012
Net Book Value of Dealer Loans Contributed at Closing	$ 315.1
Debt instrument revolving period	24 months
Debt maturity date	Sep. 15, 2014	[1],[2]

[1] Financing made available only to a specified subsidiary of the Company.

[2] Represents the revolving maturity date. The outstanding balance will amortize after the maturity date based on the cash flows of the pledged assets.