Income Taxes (Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Intangibles	$ (185.3)	$ (159.9)
Depreciation expense	(7.2)	(8.8)
Operating lease right-of-use assets	(15.2)	(11.8)
Operating lease liabilities	15.9	12.2
Allowance for doubtful accounts	1.2	1.3
Employee-related accruals	17.5	21.0
Stock-based compensation	11.8	11.1
Other	5.3	5.7
Deferred Tax Liabilities, net of deferred tax assets and valuation allowance	$ (156.0)	$ (129.2)