Commitments and Contingencies - Additional Information (Details) $ in Millions, $ in Millions		3 Months Ended	12 Months Ended
	Apr. 22, 2022 AUD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2023 USD ($) lawsuit	Dec. 31, 2022 USD ($)
Litigation Relating to Occupancy Tax
Loss Contingencies [Line Items]
Number of lawsuits filed | lawsuit			103
Number of lawsuits currently active | lawsuit			7
Number of lawsuits dismissed to date | lawsuit			50
Number of dismissals based on finding that defendant was not subject to local hotel occupancy tax or the local government lacked standing to pursue claims | lawsuit			35
Reserve for legal contingencies | $			$ 46	$ 44
Breach Of Australian Consumer Law | Affiliated Entity
Loss Contingencies [Line Items]
Trivago to pay penalty | $	$ 44.7
Estimated probable loss | $		$ 34		$ 11
Estimate of possible loss, additions | $		$ 23