v3.20.1
Inventories (Tables)
3 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventories
March 31, 2020
December 31, 2019
Finished goods
$
259

 
$
237

Work-in-process
738

 
738

Purchased raw materials
72

 
85

Operating supplies
68

 
69

1,137

 
1,129

LIFO reserve
(293
)
 
(309
)
$
844

 
$
820