Financial Instruments, Summary of Derivative Instruments Gain (Losses) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Summary of Derivative Instruments Gains (Losses) [Abstract]
Net losses recorded in AOCL expected to be reclassified to net income in the future	$ (11)
Foreign Currency Transaction Gain (Loss), before Tax	(1)	4
Foreign Exchange Forward [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	0	(15)
Cash Flow Hedging [Member] | Foreign exchange contracts - forwards [Member] | Interest Expense [Member]
Summary of Derivative Instruments Gains (Losses) [Abstract]
Derivative, Gain (Loss) on Derivative, Net	(3)	0
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	3	0
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member]
Summary of Derivative Instruments Gains (Losses) [Abstract]
Derivative Gain (Loss) Recognized in OCI	18	(34)
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member] | Cost of Sales [Member]
Summary of Derivative Instruments Gains (Losses) [Abstract]
Gain (Loss) Reclassified from AOCI to Income	$ (21)	$ (17)