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Inventories (Tables)
9 Months Ended
Sep. 30, 2023
Inventory Disclosure [Abstract]  
Inventories
Inventories consisted of the following:
Millions of dollarsSeptember 30,
2023
December 31,
2022
Finished products and parts$2,100 $1,859 
Raw materials and supplies1,099 953 
Work in process137 111 
Total inventories$3,336 $2,923