Segment and Related Information, Sales by Product Category (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment and Related Information [Abstract]
Net sales	$ 2,169.9	$ 2,125.5	$ 1,858.3
Household & Personal Care [Member]
Segment and Related Information [Abstract]
Net sales	517.6	476.2	383.7
Specialty Additives [Member]
Segment and Related Information [Abstract]
Net sales	642.6	648.4	578.9
High-Temperature Technologies [Member]
Segment and Related Information [Abstract]
Net sales	720.9	702.5	642.7
Environmental & Infrastructure [Member]
Segment and Related Information [Abstract]
Net sales	$ 288.8	$ 298.4	$ 253.0