Derivative Financial Instruments (Schedule of Derivative Instruments, Notional Amounts and Fair Values) (Details) - USD ($) $ in Millions		Mar. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Derivative, Notional Amount	[1]	$ 4,666	$ 5,164
Other Assets		11	34
Accrued Liabilities		(450)	(138)
Netting Arrangements, Other Assets		(9)	(20)
Netting Arrangements, Accrued Liabilities		9	20
Net Recorded balance, Other Assets		2	14
Net Recorded balance, Accrued Liabilities		(441)	(118)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract
Derivative [Line Items]
Derivative, Notional Amount		3,399	2,590
Other Assets		5	29
Accrued Liabilities		(285)	(60)
Designated as Hedging Instrument [Member] | Commodity Contract
Derivative [Line Items]
Derivative, Notional Amount		503	645
Other Assets		2	4
Accrued Liabilities		(163)	(72)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract
Derivative [Line Items]
Derivative, Notional Amount		181	285
Other Assets		4	1
Accrued Liabilities		(2)	(6)
Not Designated as Hedging Instrument [Member] | Commodity Contract
Derivative [Line Items]
Derivative, Notional Amount		$ 583	$ 1,644

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