Financial Instruments Effect of Derivative Instruments (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (loss) gain recognized in OCI	[1]	$ (2)	$ (2)	$ (35)	$ 16
Gain (Loss) on Derivative Instruments, Net, Pretax	[2]	19	55	188	(15)
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (loss) gain recognized in OCI	[1]	(2)	(2)	(35)	16
Amount of gain (loss) recognized in Income - Pre-tax	[2]	22	(1)	(13)	(13)
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income - pre-tax	[2],[3]	19	0	19	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (loss) gain recognized in OCI	[1]	4	0	27	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (loss) gain recognized in OCI	[1]	14	(2)	(46)	16
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Commodity Contract [Member] | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in Income - Pre-tax	[2],[3]	3	(1)	(32)	(13)
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (loss) gain recognized in OCI	[1]	(20)	0	(16)	0
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income - pre-tax	[2]	(3)	56	201	(2)
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income - pre-tax	[2],[3]	3	0	19	0
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Other Income - net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income - pre-tax	[2],[4]	(6)	55	173	(11)
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income - pre-tax	[2],[3]	$ 0	$ 1	$ 9	$ 9

[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] Loss recognized in other income - net was partially offset by the related loss on the foreign currency-denominated monetary assets and liabilities of the company's operations. See Note 7 - Supplementary Information, for additional information.