Inventories, Net (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Inventory, Net [Abstract]
Raw materials	$ 168	$ 170
Work-in-process	106	103
Finished goods, net	581	668
Materials and supplies, net	197	196
Inventories, net – current	1,052	1,137
Inventory obsolescence reserves	42	41
Reserves for lower of cost or market and net realizable value	$ 16	$ 29

Amount of inventory reserve for lower of cost or market and net realizable value.

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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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- Definition

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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Aggregated amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. This amount is net of valuation reserves and adjustments.

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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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Amount of valuation reserve for inventory.

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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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