Derivative Financial Instruments (Schedule of Derivative Instruments, Notional Amounts and Fair Values) (Details) - USD ($) $ in Millions		Jun. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Notional amounts	[1]	$ 5,181	$ 4,481
Other Assets		43	52
Accrued Liabilities		(147)	(136)
Netting Arrangements, Other Assets		(26)	(24)
Netting Arrangements, Accrued Liabilities		26	24
Net Recorded balance, Other Assets		17	28
Net Recorded balance, Accrued Liabilities		(121)	(112)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts		3,077	3,407
Other Assets		30	32
Accrued Liabilities		(62)	(132)
Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Notional amounts		125	125
Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts		690	57
Other Assets		8	9
Accrued Liabilities		(62)	(2)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Notional amounts		1,064	414
Other Assets		5	11
Accrued Liabilities		(23)	(2)
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative [Line Items]
Notional amounts		$ 225	$ 478

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