Inventories, Net - Inventories, Net (Detail) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Inventory [Line Items]
Raw materials	$ 107.4	$ 127.3
Work in process	63.4	50.8
Finished products	280.8	274.3
Supplies (chemicals)	69.4	69.7
Total	521.0	522.1
Chemicals
Inventory [Line Items]
Raw materials	104.0	124.4
Work in process	49.8	39.0
Finished products	276.0	270.7
Component Products
Inventory [Line Items]
Raw materials	3.4	2.9
Work in process	13.6	11.8
Finished products	$ 4.8	$ 3.6

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of products used directly or indirectly in the manufacturing or production process, which may or may not become part of the final product. May also include items used in the storage, presentation or transportation of physical goods.

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