Consumer Loans, Credit Quality Information And Allowances And Liabilities For Estimated Losses On Consumer Loans (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual for losses on consumer loan guaranty obligations	$ 2.8	$ 3.5	$ 3.4
Active consumer loans owned by third-party lenders	$ 50.1	$ 64.7	$ 55.3
Days for delinquent loans to be charged off	60 days
Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Delinquent loans expiry period (in days)	1 day
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Delinquent loans expiry period (in days)	59 days
Short Term Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Guaranteed Loans Term Available	90 days
Secured Auto Equity Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Guaranteed Loans Term Average	24 months
Guaranteed Loans Term Available	42 months