Inventories (Tables)

9 Months Ended

Sep. 30, 2016

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following:

Millions of dollars	September 30, 2016		December 31, 2015
Finished products and parts	$	1,528	$	1,992
Raw materials and supplies	836		879
Work in process	111		122
Total	$	2,475	$	2,993