Property, Plant and Equipment (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Oct. 01, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		$ 2,190.1	$ 2,288.6
Less: accumulated depreciation and depletion		(1,203.3)	(1,238.2)
Property, plant and equipment, net		986.8	1,050.4
Property, Plant and Equipment [Abstract]
Non-cash impairment of long-lived assets charge		71.7	0.0	$ 0.0
Depreciation and depletion expense		79.4	76.3	$ 77.4
Consumer & Specialties [Member]
Property, Plant and Equipment [Abstract]
Non-cash impairment of long-lived assets charge	$ 71.7
Mineral Rights and Reserves [Member]
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		552.6	604.9
Land [Member]
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		44.5	47.3
Buildings [Member]
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		207.3	209.8
Machinery and Equipment [Member]
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		1,201.1	1,248.0
Furniture and Fixtures and Other [Member]
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		140.0	137.1
Construction in Progress [Member]
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		$ 44.6	$ 41.5