Derivatives (Details 3) (Derivatives not designated as hedging instruments, USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	$ 32	$ 31
Foreign currency forward/option contracts
Derivatives not designated as hedging instruments
Derivative notional amount	7,500
Foreign currency forward/option contracts | Cost of Sales
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	(1)	10
Foreign currency forward contracts | Interest expense
Derivatives not designated as hedging instruments
Gain (Loss) on Derivative Recognized in income	$ 33	$ 21