Segment and Related Information - Sales By Product Category (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 05, 2026	Mar. 30, 2025
Segment and Related Information [Abstract]
Net sales	$ 546.9	$ 491.8
Household & Personal Care [Member]
Segment and Related Information [Abstract]
Net sales	142.4	123.1
Specialty Additives [Member]
Segment and Related Information [Abstract]
Net sales	154.2	145.2
High-Temperature Technologies [Member]
Segment and Related Information [Abstract]
Net sales	183.3	169.4
Environmental & Infrastructure [Member]
Segment and Related Information [Abstract]
Net sales	$ 67.0	$ 54.1