Inventories (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Inventory [Line Items]
Raw materials and supplies	$ 219.9	$ 160.3
Work-in-process	919.2	829.6
Finished goods	112.9	121.8
Total inventories at current cost	1,252.0	1,111.7
Inventory valuation reserves	(63.0)	(65.4)
Total inventories, net	$ 1,189.0	$ 1,046.3

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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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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Amount of valuation reserve for inventory.

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