Inventories (Tables)

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

(In millions)	March 31, 2019		December 31, 2018
Finished products	$	4,390	$	4,204
Semi-finished products	1,338		1,769
Raw materials	523		481
Stores and supplies	385		441
Total	$	6,636	$	6,895
Adjustment of inventories to a last-in, first out ("LIFO") basis	511		512
Total inventories	$	7,147	$	7,407