Derivatives (Details 3) (Derivatives not designated as hedging instruments, USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	$ 33	$ (7)	$ 65	$ 24
Foreign currency forward/option contracts
Derivatives not designated as hedging instruments
Derivative notional amount	8,100		8,100
Foreign currency forward/option contracts | Cost of Sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	(2)	21	(3)	31
Foreign currency forward contracts
Derivatives not designated as hedging instruments
Change related to revision to gain recognized in income for not designated hedges		(21)		(21)
Foreign currency forward contracts | Interest expense
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	35	(27)	68	(6)
Commodity price swap contracts | Cost of Sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income		$ (1)		$ (1)