Asset Impairment And Exit Costs Movement In The Exit Cost Liabilities (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Restructuring Costs [Abstract]
Liability beginning balance	$ 28
Charges	8
Cash spent	(13)	(5)
Currency/other	(1)
Liability ending balance	22
Effect on Future Cash Flows, Amount	$ 22