Fair Value Of Financial Instruments (Schedule Of Assets And Liabilities, Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 5.6	$ 4.2
Restricted cash and cash equivalents	146.6	111.3
Restricted securities available for sale	52.3	53.6
Net investment in Loans receivable	2,330.1	2,226.7
Revolving secured line of credit	115.9	102.8
Secured financing	1,143.9	938.9
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	5.6	4.2
Restricted cash and cash equivalents	146.6	111.3
Restricted securities available for sale	23.1	25.1
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted securities available for sale	29.2	28.5
Revolving secured line of credit	115.9	102.8
Secured financing	1,143.9	938.9
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net investment in Loans receivable	2,330.1	2,226.7
Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes	313.1	367.1
Senior Notes [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes	313.1	367.1
Mortgages [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes	3.7	3.8
Mortgages [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes	3.7	3.8
Carrying Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	5.6	4.2
Restricted cash and cash equivalents	146.6	111.3
Restricted securities available for sale	52.3	53.6
Net investment in Loans receivable	2,318.0	2,212.8
Revolving secured line of credit	115.9	102.8
Secured financing	1,138.6	935.6
Carrying Amount [Member] | Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes	300.0	350.2
Carrying Amount [Member] | Mortgages [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes	3.7	3.8
Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	5.6	4.2
Restricted cash and cash equivalents	146.6	111.3
Restricted securities available for sale	52.3	53.6
Net investment in Loans receivable	2,330.1	2,226.7
Revolving secured line of credit	115.9	102.8
Secured financing	1,143.9	938.9
Estimated Fair Value [Member] | Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes	313.1	367.1
Estimated Fair Value [Member] | Mortgages [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes	3.7	3.8
Certificates Of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted securities available for sale	$ 5.1	$ 4.6