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Inventories (Tables)

9 Months Ended

Sep. 30, 2012

Inventory Disclosure [Abstract]

Inventories as of September 30, 2012 and December 31, 2011 are detailed below:



	September 30, 2012				December 31, 2011
	(Millions)
Finished products	$	1,023			$	935
Work in process	159				144
Raw materials	479				414
Supplies	116				114
Total	$	1,777			$	1,607