Financial Instruments (Effect of Derivative Instruments) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	[1]	$ 4	$ 16
Amount of Gain (Loss) Recognized in Income		(73)	(169)
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	[1]	4	16
Amount of Gain (Loss) Recognized in Income		8	(11)
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	[1]	4	16
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Cost of goods sold [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	[2]	8	(11)
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	[1]	0	0
Amount of Gain (Loss) Recognized in Income		(81)	(158)
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	[1]	0	0
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Net sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income		0	(4)
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Other (loss) income, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	[3]	(85)	(154)
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in OCI (effective portion)	[1]	0	0
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Cost of goods sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income		$ 4	$ 0

[1] OCI is defined as other comprehensive income (loss).

[2] For cash flow hedges, this represents the effective portion of the gain (loss) reclassified from accumulated OCI into income during the period. For the three months ended March 31, 2017 and 2016, there was no material ineffectiveness with regard to the company's cash flow hedges.

[3] Gain (loss) recognized in other income, net, was partially offset by the related gain (loss) on the foreign currency-denominated monetary assets and liabilities of the company's operations, see Note 5 for additional information.