Financial Instruments - Fair Value of Derivative Financial Instruments and Related Notional Amounts (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative asset		$ 968	$ 373
Derivative liability		881	1,100
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative asset		808	280
Derivative liability		717	1,005
Foreign exchange contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, notional amount	[1]	29,576	24,369
Derivative asset	[1]	787	145
Derivative liability	[1]	717	1,005
Foreign exchange contracts [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, notional amount		21,419	15,063
Derivative asset		160	94
Derivative liability		164	95
Interest rate contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, notional amount		2,250	1,950
Derivative asset		21	135
Derivative liability		0	0
Sales [Member] | Foreign exchange contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, notional amount		$ 4,800	$ 5,000

[1] The notional amount of outstanding foreign exchange contracts hedging our intercompany forecasted inventory sales was $4.8 billion as of December 31, 2021 and $5.0 billion as of December 31, 2020.