Financial Instruments - Non-U.S. Dollar Debt Designated as Net Investment Hedges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Euro notes
Derivative Instruments, Gain (Loss) [Line Items]
After-tax gains/(losses) related to hedges of net investments in international operations	$ (17)	$ 142	$ (50)	$ 216
British pound sterling notes
Derivative Instruments, Gain (Loss) [Line Items]
After-tax gains/(losses) related to hedges of net investments in international operations	0	19	0	27
Swiss franc notes
Derivative Instruments, Gain (Loss) [Line Items]
After-tax gains/(losses) related to hedges of net investments in international operations	(11)	21	(16)	27
Canadian notes
Derivative Instruments, Gain (Loss) [Line Items]
After-tax gains/(losses) related to hedges of net investments in international operations	$ (7)	$ 11	$ (8)	$ 7