Other Long-Term Liabilities (Schedule of Other Long-Term Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Other Liabilities Disclosure [Abstract]
Long-term deferred compensation arrangements	$ 17.6	$ 17.6
Fair value of derivative liabilities	3.9	14.5
Environmental insurance recoveries received in excess of cumulative expenses incurred	4.0	4.8
Acquisition-related contingent consideration	0.0	4.2
Other	6.5	5.6
Total other long-term liabilities	$ 32.0	$ 46.7