Financial Instruments - Gross Notional Amounts of Outstanding Derivative Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Foreign exchange contracts \| Derivatives designated as hedging instruments: \| Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount	$ 15,823	$ 15,972
Foreign exchange contracts \| Derivatives designated as hedging instruments: \| Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount	1,472	2,117
Foreign exchange contracts \| Derivatives designated as hedging instruments: \| Net investment hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount	9,371	8,751
Foreign exchange contracts \| Derivatives not designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount	34,185	34,979
Other contracts \| Derivatives not designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount	$ 9,133	$ 7,932