Goodwill and Other Intangible Assets, net - Carrying Amount (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 445.3	$ 436.4
Foreign currency translation	(3.3)	8.9
Goodwill, ending balance	442.0	445.3
Performance Chemicals
Goodwill [Roll Forward]
Goodwill, beginning balance	441.0	432.1
Foreign currency translation	(3.3)	8.9
Goodwill, ending balance	437.7	441.0
Performance Materials
Goodwill [Roll Forward]
Goodwill, beginning balance	4.3	4.3
Foreign currency translation	0.0	0.0
Goodwill, ending balance	$ 4.3	$ 4.3