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Inventory (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Components of inventories
Raw materials	$ 366.0	$ 314.9
Work in process	780.8	544.5
Finished goods	201.1	209.2
Total inventory	$ 1,347.9	$ 1,068.6

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Inventory, net current and noncurrent

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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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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 reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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