Financial Instruments Effect of Derivative Instruments (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Loss, Unrealized (Loss) Gain on Derivatives Arising During Period, before Tax	[1]	$ (27)	$ 18	$ (33)	$ 19
Gain (Loss) on Derivative Instruments, Net, Pretax		4	(55)	171	(70)
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Loss, Unrealized (Loss) Gain on Derivatives Arising During Period, before Tax	[1]	(27)	18	(33)	19
Loss on Hedging Activity, Pre-tax	[2]	(28)	(8)	(35)	(12)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Loss, Unrealized (Loss) Gain on Derivatives Arising During Period, before Tax	[1]	4	0	23	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Loss, Unrealized (Loss) Gain on Derivatives Arising During Period, before Tax	[1]	(26)	18	(60)	19
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Commodity Contract [Member] | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Loss on Hedging Activity, Pre-tax	[2],[3]	(28)	(8)	(35)	(12)
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Loss, Unrealized (Loss) Gain on Derivatives Arising During Period, before Tax	[1]	(5)	0	4	0
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Pre-tax		32	(47)	206	(58)
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Pre-tax	[4]	17	0	17	0
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Other Income - net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Pre-tax	[4]	14	(49)	179	(66)
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	[3]	$ 1	$ 2	$ 10	$ 8

[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 7 - Supplementary Information, for additional information.