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Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of Components of Inventories
Inventories consisted of the following:
 As of December 31,
 20212020
 (in millions)
Raw materials$770 $718 
Finished product2,054 2,059 
2,824 2,777 
Inventory reserves(116)(130)
Inventories, net$2,708 $2,647