Stock Based Awards - Summary of RSU Activity (Details) - Restricted Stock Units - USD ($) $ / shares in Units, $ in Millions		6 Months Ended
		Jun. 30, 2025
RSUs outstanding
Unvested outstanding, Beginning balance		11,605,000
Unvested RSUs, Granted	[1]	6,640,000
Unvested RSUs, Vested and released	[2]	(2,970,000)
Unvested Shares, Canceled		(963,000)
Unvested outstanding, Ending balance	[3]	14,312,000
Weighted Average Grant-Date Fair Value Per Share
Unvested outstanding, Weighted Average Grant-Date Fair Value Per Share, Beginning balance		$ 23.47
Weighted Average Grant-Date Fair Value Per Share, Granted	[1]	14.86
Weighted Average Grant-Date Fair Value Per Share, Vested and released	[2]	25.33
Weighted Average Grant-Date Fair Value Per Share, Canceled		22.23
Unvested outstanding, Weighted Average Grant-Date Fair Value Per Share, Ending balance	[3]	$ 19.17
Aggregate Intrinsic Value
Unvested RSUs outstanding, Aggregate Intrinsic Value	[3]	$ 187

[1] Inclusive of approximately 77,000 deferred stock units (“DSUs”) granted to certain non-employee directors during the second quarter of 2025. Each DSU represents the right to receive one share of the Company’s common stock upon vesting. The DSUs shall vest one year after the grant date. However, settlement of the shares represented by DSUs that have vested will occur on January 15th of the calendar year immediately following the year in which the director experiences a "separation of service" as defined in Section 409A of the Internal Revenue Code of 1986.

[2] Inclusive of approximately 630,000 shares of common stock withheld in connection with RSU vesting to satisfy required employee tax withholding requirements. Shares which could have been issued in connection with the vesting of RSUs but were instead withheld under net share settlement remain in the authorized but unissued pool under the Tripadvisor, Inc. 2023 Stock and Annual Incentive Plan (the “2023 Plan”) and can be reissued by the Company under the 2023 Plan. Total payments for the employees’ tax obligations to the taxing authorities due to net share settlements are reflected as a financing activity within the consolidated statement of cash flows.

[3] The Company accounts for forfeitures as they occur, rather than estimate expected forfeitures as allowed under GAAP and therefore does not include a forfeiture rate in our vested and expected to vest calculation unless necessary for a performance condition award.