Inventories (Tables)

6 Months Ended

Jun. 30, 2020

Inventory Disclosure [Abstract]

Schedule of inventory [Table Text Block]

Inventories consisted of the following components:

Millions of dollars	June 30, 2020		December 31, 2019
Finished goods	$	2,368	$	3,083
Work-in-process	139		130
Raw materials and supplies	1,261		1,375
Total inventories	$	3,768	$	4,588