Inventory, net (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Finished goods	$ 8	$ 13
Allowance for obsolescence	(3)	(3)
Total inventory, net	$ 5	$ 10

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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