Inventories (Tables)

12 Months Ended

Dec. 31, 2019

Inventory Disclosure [Abstract]

Schedule of Inventory [Table Text Block]

Inventories at December 31 were as follows (in millions):

	2018		2019
Raw materials, work-in-process, and supplies	$	4,536	$	4,402
Finished products	6,684		6,384
Total inventories	$	11,220	$	10,786