Property, plant and equipment (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property, plant and equipment

		December 31,
(Millions of dollars)	Useful Lives (Years)	2019			2018
Land	—	$	664		$	671
Buildings and land improvements	20-45	6,710			6,977
Machinery, equipment and other	2-10	13,287			13,733
Software	3-7	1,728			1,703
Equipment leased to others	1-7	6,208			6,015
Construction-in-process	—	620			682
Total property, plant and equipment, at cost		29,217			29,781
Less: Accumulated depreciation		(16,313		)	(16,207		)
Property, plant and equipment–net		$	12,904		$	13,574