Financial Instruments - Gross Notional Amounts of Outstanding Derivative Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Foreign exchange contracts | Derivatives designated as hedging instruments: | Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount	$ 22,884	$ 20,315
Foreign exchange contracts | Derivatives designated as hedging instruments: | Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount	0	1,562
Foreign exchange contracts | Derivatives designated as hedging instruments: | Net investment hedges
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount	7,668	6,986
Foreign exchange contracts | Derivatives not designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount	38,023	44,227
Other contracts | Derivatives not designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount	$ 17,406	$ 15,082