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Inventories (Tables)
12 Months Ended
Dec. 31, 2020
Summary of Inventories
Inventories, net of reserves, consisted of the following:
 
    
December 31,
 
    
2020
    
2019
 
    
(U.S. $ in millions)
 
Finished products
     $2,378        $2,504  
Raw and packaging materials
     1,231        1,183  
Products in process
     605        583  
Materials in transit and payments on account
     189        151  
    
 
 
    
 
 
 
       $4,403        $4,422