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Inventories
3 Months Ended
Mar. 31, 2023
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consisted of the following:
Millions of dollarsMarch 31,
2023
December 31,
2022
Finished products and parts$1,995 $1,859 
Raw materials and supplies1,011 953 
Work in process127 111 
Total inventories$3,133 $2,923