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Inventories (Tables)
3 Months Ended
Mar. 31, 2021
Inventory, Net [Abstract]  
Schedule of Inventory
The following table summarizes our inventories at March 31, 2021 and December 31, 2020:
Millions of dollarsMarch 31, 2021December 31, 2020
As Adjusted
Finished products$1,795 $1,635 
Raw materials and work in process675 666 
Total Inventories$2,470 $2,301