Derivative Financial Instruments (Schedule of Derivative Instruments, Notional Amounts and Fair Values) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Derivative [Line Items]
Notional amounts	$ 4,257	[1]	$ 3,064	[1]
Other assets	40		41
Accrued liabilities	(348)		(233)
Netting arrangements, Accrued liabilities	16		16
Netting arrangements, Other assets	(16)		(16)
Derivatives, Assets	24		25
Derivatives, Liabilities	(332)		(217)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts	2,585		2,586
Other assets	10		9
Accrued liabilities	(317)		(204)
Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Notional amounts	125		125
Other assets	11		10
Accrued liabilities
Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts	21		31
Other assets	1		1
Accrued liabilities	(22)		(24)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts	338		319
Other assets	18		21
Accrued liabilities	(9)		(5)
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts	1,188		3
Other assets

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