Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2025	Mar. 31, 2024
Revenue from Contracts with Customers [Abstract]
Net sales	$ 491.8	$ 534.5
Household & Personal Care [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	123.1	138.4
Specialty Additives [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	145.2	158.5
High-Temperature Technologies [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	169.4	177.3
Environmental & Infrastructure [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	54.1	60.3
Consumer & Specialties [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	268.3	296.9
Consumer & Specialties [Member] | Household & Personal Care [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	123.1	138.4
Consumer & Specialties [Member] | Specialty Additives [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	145.2	158.5
Engineered Solutions [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	223.5	237.6
Engineered Solutions [Member] | High-Temperature Technologies [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	169.4	177.3
Engineered Solutions [Member] | Environmental & Infrastructure [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	$ 54.1	$ 60.3