Financial Instruments Effect of Derivative Instruments (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, (Loss) Gain Recognized in Other Comprehensive Income (Loss), Pre-Tax	[1]	$ (2)	$ (5)	$ 16	$ (4)
Gain (Loss) on Derivative Instruments, Net, Pretax	[2]	55	30	(15)	38
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, (Loss) Gain Recognized in Other Comprehensive Income (Loss), Pre-Tax	[1]	(2)	(5)	16	(4)
(Loss) gain on Hedging Activity, Pre-tax	[2]	(1)	(1)	(13)	6
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, (Loss) Gain Recognized in Other Comprehensive Income (Loss), Pre-Tax	[1]	(2)	(5)	16	(4)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Commodity Contract [Member] | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain on Hedging Activity, Pre-tax	[2],[3]	(1)	(1)	(13)	6
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Pre-tax	[2]	56	31	(2)	32
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Pre-tax	[2],[3]	1	0	9	5
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Income - net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Pre-tax	[2],[4]	$ 55	$ 31	$ (11)	$ 27

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

[2] For cash flow hedges, this represents the portion of the gain (loss) reclassified from accumulated OCI into income during the period.

[3] Recorded in cost of goods sold.

[4] Gain recognized in other income - net was partially offset by the related gain on the foreign currency-denominated monetary assets and liabilities of the company's operations. See Note 9 - Supplementary Information, for additional information.