Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
	Apr. 29, 2025	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Sep. 07, 2023
Schedule Of Capitalization Equity [Line Items]
Repurchase of shares of common stock authorized						$ 250
Retirement of Tripadvisor common stock and Class B common stock previously held by a related party, thereby canceling these shares		2.8	1.4
Average price of shares repurchased, common stock		$ 14.22	$ 18.28
Aggregate cost of shares repurchased, common stock		$ 40	$ 25	$ 40	$ 25
Remaining authorized share repurchased amount		$ 160		$ 160
Class B Common Stock
Schedule Of Capitalization Equity [Line Items]
Retirement of all treasury shares held by the company	53.1
Retirement treasury shares	$ 1,300
Liberty Tripadvisor Holdings, Inc.
Schedule Of Capitalization Equity [Line Items]
Retirement of Tripadvisor common stock and Class B common stock previously held by a related party, thereby canceling these shares	26.8
Average price of shares repurchased, common stock	$ 16.27
Aggregate cost of shares repurchased, common stock	$ 437