Segment and Related Information, Sales By Product Category (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2024	Oct. 01, 2023	Sep. 29, 2024	Oct. 01, 2023
Segment and Related Information [Abstract]
Net sales	$ 524.7	$ 547.8	$ 1,600.4	$ 1,645.4
Household & Personal Care [Member]
Segment and Related Information [Abstract]
Net sales	130.9	128.9	396.1	383.6
Specialty Additives [Member]
Segment and Related Information [Abstract]
Net sales	149.4	162.3	465.4	495.2
High-Temperature Technologies [Member]
Segment and Related Information [Abstract]
Net sales	174.8	177.4	536.8	538.6
Environmental & Infrastructure [Member]
Segment and Related Information [Abstract]
Net sales	$ 69.6	$ 79.2	$ 202.1	$ 228.0