Fair Value Of Financial Instruments (Schedule Of Assets And Liabilities, Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 6.3	$ 6.4
Restricted cash and cash equivalents	167.4	157.6
Restricted securities available for sale	48.3	53.2
Net investment in Loans receivable	3,126.3	2,517.3
Revolving secured line of credit	57.7	119.5
Secured financing	1,471.9	1,334.7
Senior notes	549.6	299.3
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	6.3	6.4
Restricted cash and cash equivalents	167.4	157.6
Restricted securities available for sale	38.7	47.8
Net investment in Loans receivable	0.0	0.0
Revolving secured line of credit	0.0	0.0
Secured financing	0.0	0.0
Senior notes	549.6	299.3
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0.0	0.0
Restricted cash and cash equivalents	0.0	0.0
Restricted securities available for sale	9.6	5.4
Net investment in Loans receivable	0.0	0.0
Revolving secured line of credit	57.7	119.5
Secured financing	1,471.9	1,334.7
Senior notes	0.0	0.0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0.0	0.0
Restricted cash and cash equivalents	0.0	0.0
Restricted securities available for sale	0.0	0.0
Net investment in Loans receivable	3,126.3	2,517.3
Revolving secured line of credit	0.0	0.0
Secured financing	0.0	0.0
Senior notes	$ 0.0	$ 0.0