Financial Instruments, Summary of Derivative Instruments Gain (Losses) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Summary of Derivative Instruments Gains (Losses) [Abstract]
Net losses recorded in AOCL expected to be reclassified to net income in the future			$ 46
Foreign Currency Transaction Gain (Loss), before Tax	3		7
Foreign exchange contracts - forwards [Member] | Cash Flow Hedging [Member]
Summary of Derivative Instruments Gains (Losses) [Abstract]
Derivative Gain (Loss) Recognized in OCI	(34)	52	(68)	8
Foreign exchange contracts - forwards [Member] | Cost of Sales [Member] | Cash Flow Hedging [Member]
Summary of Derivative Instruments Gains (Losses) [Abstract]
Gain (Loss) Reclassified from AOCI to Income	(37)	5	(54)	21
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	$ (18)	$ 23	$ (33)	$ 5