Inventories

9 Months Ended

Sep. 30, 2020

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories (principally using the last-in, first-out (LIFO) method) were comprised of the following:

(Millions of dollars)	September 30, 2020		December 31, 2019
Raw materials	$	4,093	$	4,263
Work-in-process	1,113		1,147
Finished goods	5,984		5,598
Supplies	263		258
Total inventories	$	11,453	$	11,266