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Property, plant and equipment
 12 Months Ended
Dec. 31, 2024
Property, Plant and Equipment [Abstract]  
Property, plant and equipment Property, plant and equipment
 
 December 31,
(Millions of dollars)Useful
Lives (Years)		20242023
Land—$612 $616 
Buildings and land improvements
20-45
7,281 7,154 
Machinery, equipment and other
2-10
12,523 12,150 
Software
3-7
1,609 1,607 
Equipment leased to others
1-7
5,701 5,837 
Construction-in-process—1,751 1,259 
Total property, plant and equipment, at cost 29,477 28,623 
Less: Accumulated depreciation (16,116)(15,943)
Property, plant and equipment–net $13,361 $12,680