Fair Value Of Financial Instruments (Schedule Of Assets And Liabilities, Measured At Fair Value) (Details) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	$ 7.7	$ 23.3
Restricted cash and cash equivalents	[1]	410.0	410.9
Debt Securities, Available-for-sale, Restricted	[2]	72.3	62.1
Net investment in Loans receivable	[1]	6,767.9	6,580.4
Revolving secured line of credit	[1]	30.9	2.6
Secured financing	[1]	3,581.9	3,832.1
Senior notes	[1]	759.0	825.8
Other Borrowings	[1]	8.9	9.7
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	7.7	23.3
Restricted cash and cash equivalents	[1]	410.0	410.9
Debt Securities, Available-for-sale, Restricted	[2]	58.7	49.0
Net investment in Loans receivable	[1]	0.0	0.0
Revolving secured line of credit	[1]	0.0	0.0
Secured financing	[1]	2,781.8	3,231.9
Senior notes	[1]	759.0	825.8
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]	13.6	13.1
Net investment in Loans receivable	[1]	0.0	0.0
Revolving secured line of credit	[1]	30.9	2.6
Secured financing	[1]	800.1	600.2
Senior notes	[1]		0.0
Other Borrowings	[1]	8.9	9.7
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]	6,767.9	6,580.4
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.