Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Allowance for credit losses	$ 693.5	$ 721.8
Stock-based compensation	18.3	16.3
Deferred state net operating loss	4.7	2.1
Other, net	12.2	10.9
Total deferred tax assets	728.7	751.1
Valuation of Loans receivable	1,140.4	1,169.6
Deferred Loan origination costs	1.6	1.6
Other, net	13.4	15.1
Total deferred tax liabilities	1,155.4	1,186.3
Net deferred tax liability	$ 426.7	$ 435.2