Fair Value Of Financial Instruments (Schedule Of Assets And Liabilities, Measured At Fair Value) (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	$ 23.3	$ 16.0
Restricted cash and cash equivalents	[1]	410.9	380.2
Debt Securities, Available-for-sale, Restricted	[2]	62.1	66.1
Net investment in Loans receivable	[1]	6,580.4	7,216.4
Revolving secured line of credit	[1]	2.6	95.9
Secured financing	[1]	3,832.1	3,793.9
Senior notes	[1]	825.8	842.0
Other Borrowings	[1]	9.7	10.5
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	23.3	16.0
Restricted cash and cash equivalents	[1]	410.9	380.2
Debt Securities, Available-for-sale, Restricted	[2]	49.0	52.8
Net investment in Loans receivable	[1]	0.0	0.0
Revolving secured line of credit	[1]	0.0	0.0
Secured financing	[1]	0.0	0.0
Senior notes	[1]	825.8	842.0
Other Borrowings	[1]	0.0	0.0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	0.0	0.0
Restricted cash and cash equivalents	[1]	0.0	0.0
Debt Securities, Available-for-sale, Restricted	[2]	13.1	13.3
Net investment in Loans receivable	[1]	0.0	0.0
Revolving secured line of credit	[1]	2.6	95.9
Secured financing	[1]	3,832.1	3,793.9
Senior notes	[1]	0.0	0.0
Other Borrowings	[1]	9.7	10.5
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	0.0	0.0
Restricted cash and cash equivalents	[1]	0.0	0.0
Debt Securities, Available-for-sale, Restricted	[2]	0.0	0.0
Net investment in Loans receivable	[1]	6,580.4	7,216.4
Revolving secured line of credit	[1]	0.0	0.0
Secured financing	[1]	0.0	0.0
Senior notes	[1]	0.0	0.0
Other Borrowings	[1]	$ 0.0	$ 0.0

[1] Measured at amortized cost with fair value disclosed.

[2] Measured at fair value on a recurring basis.