Derivative Financial Instruments (Schedule of Derivative Instruments, Notional Amounts and Fair Values) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Derivative [Line Items]
Notional amounts	$ 3,656	[1]	$ 3,177	[1]
Other assets	61		149
Accrued liabilities	(156)		(142)
Derivatives, Assets	38		86
Derivatives, Liabilities	(133)		(79)
Netting Arrangements [Member]
Derivative [Line Items]
Netting arrangements, Accrued liabilities	23		63
Netting arrangements, Other assets	(23)		(63)
Derivatives designated as hedging instruments [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts	2,830	[1]	2,524	[1]
Other assets	22		122
Accrued liabilities	(120)		(64)
Derivatives designated as hedging instruments [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Notional amounts	313	[1]	313	[1]
Other assets	10		13
Accrued liabilities
Derivatives designated as hedging instruments [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts	39	[1]	72	[1]
Other assets	1		2
Accrued liabilities	(26)		(39)
Derivatives not receiving hedge accounting treatment [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts	470	[1]	259	[1]
Other assets	28		12
Accrued liabilities	(9)		(35)
Derivatives not receiving hedge accounting treatment [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts	4	[1]	9	[1]
Other assets
Accrued liabilities	$ (1)		$ (4)

[1] Notional amounts represent the gross contract/notional amount of the derivatives outstanding.