Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jul. 02, 2023	Jun. 30, 2024	Jul. 02, 2023
Revenue from Contracts with Customers [Abstract]
Net sales	$ 541.2	$ 551.5	$ 1,075.7	$ 1,097.6
Household & Personal Care [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	126.8	125.5	265.2	254.7
Specialty Additives [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	157.5	164.8	316.0	332.9
High-Temperature Technologies [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	184.7	182.6	362.0	361.2
Environmental & Infrastructure [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	72.2	78.6	132.5	148.8
Consumer & Specialties [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	284.3	290.3	581.2	587.6
Consumer & Specialties [Member] | Household & Personal Care [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	126.8	125.5	265.2	254.7
Consumer & Specialties [Member] | Specialty Additives [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	157.5	164.8	316.0	332.9
Engineered Solutions [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	256.9	261.2	494.5	510.0
Engineered Solutions [Member] | High-Temperature Technologies [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	184.7	182.6	362.0	361.2
Engineered Solutions [Member] | Environmental & Infrastructure [Member]
Revenue from Contracts with Customers [Abstract]
Net sales	$ 72.2	$ 78.6	$ 132.5	$ 148.8