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Inventories (Tables)
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Inventory Components [Table Text Block]

Inventory components at December 31
 
2019
 
2018
Raw materials
$
470

 
$
433

Work in process and finished goods
787

 
649

Inventory reserves
(64
)
 
(51
)
Total
$
1,193

 
$
1,031