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Inventories (Tables)
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Components of Inventories
 
2019
 
2018
Raw materials and supplies
$
905

 
$
937

Work in process
151

 
144

Finished goods
570

 
609

 
$
1,626

 
$
1,690