Derivatives (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Gains and losses related to derivative instruments not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	$ 22,000,000	$ (42,000,000)	$ (20,000,000)
Derivatives not designated as hedging instruments
Gains and losses related to derivative instruments not designated as hedging instruments
Gross notional amount of forward, option and swap contracts not designated as hedging instruments	1,100,000,000
Derivatives not designated as hedging instruments | Foreign currency forward/option contracts | Cost of Sales
Gains and losses related to derivative instruments not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	13,000,000	(24,000,000)	(41,000,000)
Derivatives not designated as hedging instruments | Foreign currency forward contracts | Interest expense
Gains and losses related to derivative instruments not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	9,000,000	(19,000,000)	20,000,000
Derivatives not designated as hedging instruments | Commodity price swap contracts | Cost of Sales
Gains and losses related to derivative instruments not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income		$ 1,000,000	$ 1,000,000