Financial Instruments - Derivative Notional Amounts (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Foreign exchange contracts \| Fair Value of Derivatives Not Designated as Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Notional principal	$ 34,979	$ 41,031
Foreign exchange contracts \| Cash flow hedges \| Fair Value of Derivatives Designated as Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Notional principal	15,972	16,362
Foreign exchange contracts \| Fair value hedges \| Fair Value of Derivatives Designated as Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Notional principal	2,117	2,556
Foreign exchange contracts \| Net investment hedges \| Fair Value of Derivatives Designated as Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Notional principal	8,751	10,159
Other contracts \| Fair Value of Derivatives Not Designated as Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Notional principal	$ 7,932	$ 4,275