Inventories (Tables)

9 Months Ended

Sep. 30, 2020

Inventory Disclosure [Abstract]

Schedule of inventory [Table Text Block]

Inventories consisted of the following components:

Millions of dollars	September 30, 2020		December 31, 2019
Finished goods	$	2,529	$	3,083
Work-in-process	154		130
Raw materials and supplies	1,322		1,375
Total inventories	$	4,005	$	4,588