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Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory [Table Text Block] Inventories at December 31 were as follows (in millions):
 20202021
Raw materials, work-in-process, and supplies$4,676 $5,785 
Finished products6,132 6,280 
Total inventories
$10,808 $12,065