Derivative Financial Instruments (Schedule of Derivative Instruments, Notional Amounts and Fair Values) (Details) - USD ($) $ in Millions		Jun. 30, 2015	Dec. 31, 2014
Derivative [Line Items]
Notional amounts	[1]	$ 3,830	$ 3,064
Other assets		34	41
Accrued liabilities		(273)	(233)
Netting arrangements, Accrued liabilities		(15)	(16)
Netting arrangements, Other assets		15	16
Derivatives, Assets		19	25
Derivatives, Liabilities		(258)	(217)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts		2,368	2,586
Other assets		10	9
Accrued liabilities		(251)	(204)
Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Notional amounts		125	125
Other assets		10	10
Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts		25	31
Other assets		1	1
Accrued liabilities		(15)	(24)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts		428	319
Other assets		13	21
Accrued liabilities		(7)	(5)
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts		$ 884	$ 3

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