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Revenue - Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 823	$ 716	$ 1,643	$ 1,475
Transaction
Disaggregation of Revenue [Line Items]
Revenue	595	510	1,198	1,069
Advertising and other
Disaggregation of Revenue [Line Items]
Revenue	$ 228	$ 206	$ 445	$ 406

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