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Revenue - Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 852	$ 764	$ 2,495	$ 2,239
Transaction
Disaggregation of Revenue [Line Items]
Revenue	606	542	1,804	1,611
Advertising and other
Disaggregation of Revenue [Line Items]
Revenue	$ 246	$ 222	$ 691	$ 628

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