Derivatives (Details 4) (Derivatives not designated as hedging instruments, USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Derivatives not designated as hedging instruments
Gross notional amount of forward, option and swap contracts not designated as hedging instruments	$ 1,400,000,000		$ 1,400,000,000
Gain (Loss) on Derivative Recognized in income	(28,000,000)	4,000,000	3,000,000	17,000,000
Foreign currency forward/option contracts | Cost of Sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	21,000,000	20,000,000	31,000,000	5,000,000
Foreign currency forward contracts | Interest expense
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	(48,000,000)	(15,000,000)	(27,000,000)	12,000,000
Commodity price swap contracts | Cost of Sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	$ (1,000,000)	$ (1,000,000)	$ (1,000,000)	$ 0