Derivative Financial Instruments (Schedule of Derivative Instruments, Notional Amounts and Fair Values) (Details) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Notional amounts	[1]	$ 3,843	$ 3,875
Other Assets		99	68
Accrued Liabilities		(173)	(247)
Netting Arrangements, Other Assets		(56)	(45)
Netting Arrangements, Accrued Liabilities		56	45
Net Recorded balance, Other Assets		43	23
Net Recorded balance, Accrued Liabilities		(117)	(202)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts		2,497	2,584
Other Assets		72	34
Accrued Liabilities		(154)	(225)
Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Notional amounts		125	125
Other Assets		6	6
Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts		22	53
Other Assets		3	7
Accrued Liabilities		(8)	(5)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts		470	465
Other Assets		18	21
Accrued Liabilities		(11)	(17)
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts		$ 729	$ 648

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