Loans Receivable (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Age of Consumer Loans contractual payments due with no forecasted future net cash flows	120 months	120 months
Increase in provision for credit losses	$ 3.0	$ 3.0
Dealer Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase in provision for credit losses	1.2	1.2
Purchased Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase in provision for credit losses	$ 1.8	$ 1.8