Investments - Carrying Value of Equity Investments Without Readily Determinable Fair Values (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Equity Securities without Readily Determinable Fair Value [Roll Forward]
Carrying value, beginning of period	$ 86	$ 85
Additions	33	11
Downward adjustments for observable price changes and impairment	0	(7)
Foreign currency translation and other	(1)	(3)
Carrying value, end of period	$ 118	$ 86