Financial Instruments, Summary of Derivative Instruments Gain (Losses) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Summary of Derivative Instruments Gains (Losses) [Abstract]
Net losses recorded in AOCL expected to be reclassified to net income in the future			$ (33)
Foreign Currency Transaction Gain (Loss), before Tax	0	(1)	(7)	(1)
Foreign exchange contracts - forwards [Member] | Foreign Currency Gain (Loss) [Member] | Derivatives Not Designated as Hedging Instruments [Member]
Summary of Derivative Instruments Gains (Losses) [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(12)	(6)	(45)	(1)
Cash Flow Hedging [Member] | Foreign exchange contracts - forwards [Member]
Summary of Derivative Instruments Gains (Losses) [Abstract]
Derivative Gain (Loss) Recognized in OCI	(13)	8	(81)	16
Cash Flow Hedging [Member] | Foreign exchange contracts - forwards [Member] | Cost of Sales [Member]
Summary of Derivative Instruments Gains (Losses) [Abstract]
Gain (Loss) Reclassified from AOCI to Income	$ (35)	$ 8	$ (89)	$ 29