Derivative Financial Instruments (Schedule of Derivative Instruments, Notional Amounts and Fair Values) (Details) - USD ($) $ in Millions		Mar. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Notional amounts	[1]	$ 3,755	$ 4,053
Other Assets		73	38
Accrued Liabilities		(230)	(328)
Netting Arrangements, Other Assets		(41)	(23)
Netting Arrangements, Accrued Liabilities		41	23
Net Recorded balance, Other Assets		32	15
Net Recorded balance, Accrued Liabilities		(189)	(305)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts		2,570	2,727
Other Assets		53	23
Accrued Liabilities		(211)	(304)
Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Notional amounts		125	125
Other Assets		11	9
Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts		$ 21	40
Other Assets			2
Accrued Liabilities		$ (13)	(13)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts		354	436
Other Assets		9	4
Accrued Liabilities		(6)	(11)
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts		$ 685	$ 725

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