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Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Inventories as of March 31, 2013 and December 31, 2012 are detailed below:



	March 31, 2013				December 31, 2012
	(Millions)
Finished products	$	1,033			$	980
Work in process	153				144
Raw materials	443				443
Supplies	69				120
Total	$	1,698			$	1,687