Acquisitions, Dispositions, Ventures and Plant Closures Acquisitions, Dispositions, Ventures and Plant Closures (Dispositions Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			1 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Jul. 31, 2009 Industrial Specialties [Member]
Proceeds from divestiture of businesses				$ 168
Gain (loss) on disposition of assets, net	$ (2)	$ 8	$ 42	$ 34