Inventories (Tables)

12 Months Ended

Dec. 31, 2018

Inventory, Net [Abstract]

Schedule of Inventory, Current [Table Text Block]

(In millions)	December 31, 2018		December 31, 2017
Finished products	$	4,204	$	4,500
Semi-finished products	1,769		2,769
Raw materials	481		371
Stores and supplies	441		447
Total	$	6,895	$	8,087
Adjustment of inventories to a LIFO basis	512		546
Total inventories	$	7,407	$	8,633