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Inventories (Tables)

9 Months Ended

Sep. 30, 2019

Inventories

Major classes of inventory

​

​	​	​	​	​	​	​	​	​	​	​	​
​	​	September 30,		​	December 31,		​	September 30,		​	​
​		2019			2018			2018
Finished goods	​	$	836	​	$	849	​	$	808	​	​
Raw materials	​		134	​		125	​		119	​	​
Operating supplies	​		45	​		44	​		46	​	​
​	​	$	1,015	​	$	1,018	​	$	973	​	​

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- Definition

Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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