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Inventories (Tables)
6 Months Ended
Jun. 30, 2023
Inventory Disclosure [Abstract]  
Inventories
Inventories consisted of the following:
Millions of dollarsJune 30,
2023
December 31,
2022
Finished products and parts$2,075 $1,859 
Raw materials and supplies1,037 953 
Work in process129 111 
Total inventories$3,241 $2,923