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Inventories
9 Months Ended
Sep. 30, 2011
Inventory Disclosure [Abstract] 
Inventories
INVENTORIES
We value our inventories at the lower of cost or market. Cost is determined using the first-in, first-out (FIFO) method. The following table summarizes our inventories as of the dates presented (in millions):
 
 
September 30,
2011
 
December 31,
2010
Finished goods
$
262

 
$
230

Raw materials and supplies
140

 
137

Total inventories
$
402

 
$
367