Inventories - Components of Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Inventories:
Manufacturing supplies	$ 38.0	$ 34.8
Raw materials	121.8	99.5
Work in process	418.4	320.3
Finished products	527.8	441.2
Subtotal	1,106.0	895.8
Allowance for surplus and obsolete inventory	(63.3)	(54.5)
Total Inventories, net	$ 1,042.7	$ 841.3

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of other supplies used within the manufacturing or production process expected to be consumed within one year or operating cycle, if longer.

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