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Inventories (Tables)
 9 Months Ended
Sep. 30, 2013
Inventories  
Major classes of inventory

 

 

 

September 30,

 

December 31,

 

September 30,

 

 

 

2013

 

2012

 

2012

 

 

 

 

 

 

 

 

 

Finished goods

 

$

1,011

 

$

957

 

$

1,054

 

Raw materials

 

120

 

137

 

128

 

Operating supplies

 

47

 

45

 

46

 

 

 

 

 

 

 

 

 

 

 

$

1,178

 

$

1,139

 

$

1,228