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Property, Plant and Equipment (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		$ 2,288.6	$ 2,296.4
Less: accumulated depreciation and depletion		(1,238.2)	(1,247.3)
Property, plant and equipment, net		1,050.4	1,049.1
Property, Plant and Equipment [Abstract]
Depreciation and depletion expense		76.3	77.4	$ 77.9
Mineral Rights and Reserves [Member]
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		604.9	554.7
Land [Member]
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		47.3	50.6
Buildings [Member]
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		209.8	229.2
Machinery and Equipment [Member]
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		1,248.0	1,262.8
Furniture and Fixtures and Other [Member]
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		137.1	139.9
Construction in Progress [Member]
Property, plant and equipment, net [Abstract]
Property, plant and equipment, gross		$ 41.5	$ 59.2
Specialty PCC Assets from Company in Midwest United States [Member]
Property, Plant and Equipment [Abstract]
Acquisition of assets	$ 6.9

X

- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives and The noncash expense charged against earnings to recognize the consumption of natural resources that are not part of an entity's cost of goods sold.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of consideration transferred in asset acquisition. Includes, but is not limited to, cash, liability incurred by acquirer, and equity interest issued by acquirer.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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