Derivatives (Details 3) (Derivatives not designated as hedging instruments, USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	$ (64)	$ (16)	$ 1	$ 8
Foreign currency forward/option contracts
Derivatives not designated as hedging instruments
Derivative notional amount	6,900		6,900
Foreign currency forward/option contracts | Cost of Sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	8	(16)	5	15
Foreign currency forward contracts
Derivatives not designated as hedging instruments
Change related to revision to gain recognized in income for not designated hedges				(21)
Foreign currency forward contracts | Interest expense
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	(72)	0	(4)	(6)
Commodity price swap contracts | Cost of Sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income		$ 0		$ (1)