Segment and Related Information, Sales By Product Category (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2023	Oct. 02, 2022	Oct. 01, 2023	Oct. 02, 2022
Segment and Related Information [Abstract]
Net sales	$ 547.8	$ 541.9	$ 1,645.4	$ 1,617.9
Household & Personal Care [Member]
Segment and Related Information [Abstract]
Net sales	128.9	118.7	383.6	358.0
Specialty Additives [Member]
Segment and Related Information [Abstract]
Net sales	162.3	166.0	495.2	493.4
High-Temperature Technologies [Member]
Segment and Related Information [Abstract]
Net sales	177.4	176.1	538.6	532.7
Environmental & Infrastructure [Member]
Segment and Related Information [Abstract]
Net sales	$ 79.2	$ 81.1	$ 228.0	$ 233.8