Other Long-Term Liabilities (Schedule of Other Long-Term Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Other Liabilities Disclosure [Abstract]
Long-term deferred compensation arrangements	$ 17.0	$ 17.6
Fair value of derivative liabilities	0.3	14.5
Environmental insurance recoveries received in excess of cumulative expenses incurred	3.8	4.8
Acquisition-related contingent consideration	0.0	4.2
Other	6.8	5.6
Total other long-term liabilities	$ 27.9	$ 46.7