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Inventories (Tables)
6 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory [Table Text Block]
Inventories were as follows (in millions):
 December 31,
2020
June 30,
2021
Raw materials, work-in-process, and supplies$4,676 $5,578 
Finished products6,132 8,015 
Total inventories$10,808 $13,593