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Inventories
 9 Months Ended
Sep. 30, 2015
Inventory, Net [Abstract]  
Inventories
Inventories 
 
September 30,
2015
December 31,
2014
Finished products
$
3,260

$
4,011

Semi-finished products
2,083

2,277

Raw materials, stores and supplies
749

739

 
6,092

7,027

Adjustment of inventories to a last-in, first-out (LIFO) basis
(204
)
(240
)
Total
$
5,888

$
6,787