Organization and Business Description - Additional Information (Details) shares in Millions, Hotel in Millions				3 Months Ended	12 Months Ended
	Dec. 17, 2020	May 05, 2020	Dec. 11, 2012 shares	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($) Vote / shares Market Language Hotel shares	Jul. 09, 2020 USD ($)
Description Of Business And Basis Of Presentation [Line Items]
Number of markets with localized versions of website | Market					48
Number of languages worldwide | Language					28
Description of user-generated reviews and opinions across broad base of global travel-related businesses					Tripadvisor features 884 million reviews and opinions on 7.9 million hotels and other accommodations, restaurants, experiences, airlines and cruises.
Number of reviews and opinions | Hotel					7.9
COVID-19 Pandemic
Description Of Business And Basis Of Presentation [Line Items]
Income tax expense (benefit) due to CARES Act					$ (23,000,000)
Government grants and other assistance benefits recognized					12,000,000
Government grants and other assistance benefits received					10,000,000
COVID-19 Pandemic | Prepaid Expenses and Other Current Assets
Description Of Business And Basis Of Presentation [Line Items]
Government grants and other assistance benefits receivable					$ 2,000,000
Revolving Credit Facility | 2015 Credit Facility
Description Of Business And Basis Of Presentation [Line Items]
Amount borrowed				$ 700,000,000
Revolving Credit Facility | 2015 Credit Facility | Amended Credit Agreement On December 17th 2020
Description Of Business And Basis Of Presentation [Line Items]
Credit facility, maturity date		May 12, 2022			May 12, 2022
Credit facility, extended maturity date	May 12, 2024				May 12, 2024
7.000% senior notes due July 15, 2025
Description Of Business And Basis Of Presentation [Line Items]
Debt instrument, aggregate principal amount						$ 500,000,000
Class B Common Stock
Description Of Business And Basis Of Presentation [Line Items]
Right to voting					10 votes per share
Vote per common stock share | Vote / shares					10
Liberty
Description Of Business And Basis Of Presentation [Line Items]
Common stock purchased by Liberty | shares			4.8
Beneficially ownership of shares of common stock | shares			18.2
Beneficially ownership of shares of Common Stock Class B | shares			12.8
Percentage of interest held by related party			100.00%
LTRIP
Description Of Business And Basis Of Presentation [Line Items]
Beneficially ownership of shares of common stock | shares					18.2
Percentage taken from outstanding shares of common stock					14.90%
Percentage of beneficially ownership of shares of common stock class B					23.00%
Right to voting					one vote per share
Vote per common stock share | Vote / shares					1
Beneficially ownership of equity securities					58.50%
LTRIP | Class B Common Stock
Description Of Business And Basis Of Presentation [Line Items]
Beneficially ownership of shares of common stock | shares					12.8
Percentage taken from outstanding shares of common stock					100.00%
Right to voting					ten votes per share
Vote per common stock share | Vote / shares					10