Derivatives (Details 4) (Derivatives not designated as hedging instruments, USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	$ (16)	$ (17)	$ (13)	$ 0
Foreign currency forward/option contracts
Derivatives not designated as hedging instruments
Derivative notional amount	928		928
Foreign currency forward/option contracts | Cost of Sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	(16)	(31)	15	(26)
Foreign currency forward contracts | Interest expense
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	0	14	(27)	26
Commodity price swap contracts | Cost of Sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	$ 0		$ (1)