Financial Instruments - Fair Values of Outstanding Derivative Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Derivative Assets:
Assets	$ 645	$ 453
Derivative Liabilities:
Liabilities	770	445
Derivatives designated as hedging instruments: | Foreign exchange contracts
Derivative Assets:
Assets	8	205
Derivative Liabilities:
Liabilities	587	242
Derivatives not designated as hedging instruments:
Derivative Assets:
Assets	637	248
Derivative Liabilities:
Liabilities	183	203
Derivatives not designated as hedging instruments: | Foreign exchange contracts
Derivative Assets:
Assets	186	134
Derivative Liabilities:
Liabilities	154	156
Derivatives not designated as hedging instruments: | Other contracts
Derivative Assets:
Assets	451	114
Derivative Liabilities:
Liabilities	$ 29	$ 47