Financial Instruments Effect of Derivative Instruments (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	[1]	$ 11	$ 167
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (loss) gain recognized in OCI- Pre Tax	[2]	88	(6)
Amount of gain (loss) recognized in Income - Pre-tax	[1]	5	(7)
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- Pre Tax	[2]	21	9
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- Pre Tax	[2]	31	19
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign Currency Contract [Member] | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in Income - Pre-tax	[1],[3]	1	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- Pre Tax	[2]	36	(34)
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	[1],[3]	4	(7)
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income - pre-tax	[1]	6	174
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	[1],[3]	2	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	[1],[4]	16	165
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	[1],[3]	$ (12)	$ 9

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

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

[3] Recorded in cost of goods sold.

[4] Gain recognized in other income (expense) - net was partially offset by the related gain on the foreign currency-denominated monetary assets and liabilities of the company's operations. See Note 6 - Supplementary Information, for additional information.