Segment and Related Information, Sales By Product Category (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2023	Jul. 03, 2022	Jul. 02, 2023	Jul. 03, 2022
Segment and Related Information [Abstract]
Net sales	$ 551.5	$ 557.0	$ 1,097.6	$ 1,076.1
Household & Personal Care [Member]
Segment and Related Information [Abstract]
Net sales	125.5	118.9	254.7	239.3
Specialty Additives [Member]
Segment and Related Information [Abstract]
Net sales	164.8	164.3	332.9	327.4
High-Temperature Technologies [Member]
Segment and Related Information [Abstract]
Net sales	182.6	186.7	361.2	356.6
Environmental & Infrastructure [Member]
Segment and Related Information [Abstract]
Net sales	$ 78.6	$ 87.1	$ 148.8	$ 152.8