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Inventories
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories are comprised of the following at the dates indicated (in millions):
March 31, 2021December 31, 2020
Raw materials and supplies$269 $252 
Work-in-process163 157 
Finished products1,469 1,229 
$1,901 $1,638