Financial Instruments, Summary of Derivative Instruments Gain (Losses) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Summary of Derivative Instruments Gains (Losses) [Abstract]
Net losses recorded in AOCL expected to be reclassified to net income in the future			$ 5
Foreign Currency Transaction Gain (Loss), before Tax	(1)	0	(1)	7
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	1	(12)	1	(45)
Fair Value Hedging [Member] | Interest Rate Contract [Member] | Interest Expense [Member]
Summary of Derivative Instruments Gains (Losses) [Abstract]
Derivative (loss) recognized in interest expense	(2)	0	0	0
Hedged item gain recognized in interest expense	2	0	0	0
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member]
Summary of Derivative Instruments Gains (Losses) [Abstract]
Derivative (loss) gain recognized in OCI (effective portion)	(19)	(13)	10	(81)
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member] | Cost of Sales [Member]
Summary of Derivative Instruments Gains (Losses) [Abstract]
Derivative (loss) reclassified from AOCI to income - Cost of sales (effective portion)	$ (3)	$ (35)	$ (32)	$ (89)