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Inventories, Net (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 183 $ 206
Work in process 83 94
Finished goods 1,314 1,495
Inventories, net 1,580 1,795
Inventories reserves 73 $ 27
Inventory write-down $ 58