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Inventories (Tables)
6 Months Ended
Jun. 30, 2022
Inventory Disclosure [Abstract]  
Inventories
Inventories consisted of the following:
Millions of dollarsJune 30,
2022
December 31,
2021
Finished products and parts$1,586 $1,380 
Raw materials and supplies945 890 
Work in process123 91 
Total$2,654 $2,361