Inventories (Tables)

6 Months Ended

Jun. 30, 2016

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following:

Millions of dollars	June 30, 2016		December 31, 2015
Finished products and parts	$	1,662	$	1,992
Raw materials and supplies	885		879
Work in process	103		122
Total	$	2,650	$	2,993