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Inventories
9 Months Ended
Sep. 30, 2011
Inventories 
Inventories

F. Inventories

 

     September 30,
2011
     December 31,
2010
 

Finished goods

   $ 592       $ 470   

Work-in-process

     1,042         814   

Bauxite and alumina

     697         621   

Purchased raw materials

     571         401   

Operating supplies

     270         256   
  

 

 

    

 

 

 
   $ 3,172       $ 2,562   
  

 

 

    

 

 

 

At September 30, 2011 and December 31, 2010, the total amount of inventories valued on a last in, first out (LIFO) basis was 37% and 36%, respectively. If valued on an average-cost basis, total inventories would have been $818 and $742 higher at September 30, 2011 and December 31, 2010, respectively.