Organization and Business Description	12 Months Ended
Dec. 31, 2019
Accounting Policies [Abstract]
Organization and Business Description	NOTE 1: ORGANIZATION AND BUSINESS DESCRIPTION We refer to Tripadvisor, Inc. and our wholly-owned subsidiaries as “Tripadvisor,” “the Company,” “us,” “we” and “our” in these notes to the consolidated financial statements. On December 20, 2011, Expedia Group, Inc. (“Expedia”) completed a spin-off of Tripadvisor into a separate publicly traded Delaware corporation. We refer to this transaction as the “Spin-Off.” Tripadvisor’s common stock began trading on the NASDAQ as an independent public company on December 21, 2011, under the trading symbol “TRIP.” On December 11, 2012, Liberty Interactive Corporation, or Liberty, purchased an aggregate of approximately 4.8 million shares of common stock of Tripadvisor from Barry Diller, our former Chairman of the Board of Directors and Senior Executive, and certain of his affiliates. As a result, Liberty beneficially owned approximately 18.2 million shares of our common stock and 12.8 million shares of our Class B common stock. On August 27, 2014, the entire beneficial ownership of our common stock and Class B common stock held by Liberty was acquired by Liberty Tripadvisor Holdings, Inc., or LTRIP. Simultaneously, Liberty, LTRIP’s former parent company, distributed, by means of a dividend, to the holders of its Liberty Ventures common stock, Liberty’s entire equity interest in LTRIP. We refer to this transaction as the “Liberty Spin-Off”. As a result of the Liberty Spin-Off, effective August 27, 2014, LTRIP became a separate, publicly traded company holding 100% of Liberty’s interest in Tripadvisor. As a result of these transactions, as of December 31, 2019, LTRIP beneficially owned approximately 18.2 million shares of our common stock and 12.8 million shares of our Class B common stock, which constitute 14.6% of the outstanding shares of common stock and 100% of the outstanding shares of Class B common stock. Assuming the conversion of all of LTRIP’s shares of Class B common stock into common stock, LTRIP would beneficially own 22.5% of the outstanding common stock. Because each share of Class B common stock is entitled to ten votes per share and each share of common stock is entitled to one vote per share, LTRIP may be deemed to beneficially own equity securities representing 57.9% of our voting power. Description of Business Tripadvisor is a leading online travel company and our mission is to help people around the world plan, book and experience the perfect trip. We operate a global travel platform that connects the world’s largest audience of prospective travelers with travel partners through rich content, price comparison tools, and online reservation and related services for destinations, accommodations, travel activities and experiences, and restaurants. Under our flagship brand, Tripadvisor, we launched www.Tripadvisor.com in the United States in 2000. Since then, we have launched localized versions of the Tripadvisor website in 48 markets and 28 languages worldwide. Tripadvisor features 859 million reviews and opinions on 8.6 million places to stay, places to eat and things to do – including 1.4 million hotels, inns, B&Bs and specialty lodging, 842,000 rental properties, 5.2 million restaurants and 1.2 million travel activities and experiences worldwide. Tripadvisor’s rich content and engaged community attract the world’s largest travel audience, based on monthly unique visitors, including 463 million average monthly unique visitors in the third quarter of 2019 during the peak summer travel season. In addition to the flagship Tripadvisor brand, we own and operate a portfolio of travel media brands and businesses, operating under various websites including the following: www.airfarewatchdog.com, www.bokun.io, www.bookingbuddy.com, www.cruisecritic.com, www.familyvacationcritic.com, www.flipkey.com, www.thefork.com (including www.lafourchette.com, www.eltenedor.com, www.restorando.com, and www.bookatable.co.uk), www.holidaylettings.co.uk, www.holidaywatchdog.com, www.housetrip.com, www.jetsetter.com, www.niumba.com, www.onetime.com, www.oyster.com, www.seatguru.com, www.singleplatform.com, www.smartertravel.com, www.vacationhomerentals.com, and www.viator.com. During the first quarter of 2019, as part of our continuous review of the business, we evaluated our operations and realigned the reportable segment information which our chief operating decision maker, or CODM, regularly assesses to evaluate performance for operating decision-making purposes, including evaluation and allocation of resources. The CODM for the Company is our Chief Executive Officer. The revised segment reporting structure includes the following reportable segments: (1) Hotels, Media & Platform; and (2) Experiences & Dining. For further information on our segments and principal revenue streams within these segments refer to “Note 4: Revenue Recognition” and “Note 18: Segment and Geographic Information” in the notes to our consolidated financial statements. All prior period segment disclosure information has been reclassified to conform to the current reporting structure in this Form 10-K. These reclassifications had no effect on our consolidated financial statements in any period. Seasonality Consumers’ travel expenditures follow a seasonal pattern. Correspondingly, travel partners’ advertising investments and, therefore, our revenue and profits, also follow a seasonal pattern. Our financial performance tends to be seasonally highest in the second and third quarters of a given year, which includes the seasonal peak in consumer demand, traveler hotel and rental stays, and travel activities and experiences taken, compared to the first and fourth quarters, which represent seasonal low points. Significant shifts in our business mix or adverse economic conditions could result in future seasonal patterns that are different from historical trends.

Organization and Business Description

12 Months Ended

Dec. 31, 2019

NOTE 1: ORGANIZATION AND BUSINESS DESCRIPTION

We refer to Tripadvisor, Inc. and our wholly-owned subsidiaries as “Tripadvisor,” “the Company,” “us,” “we” and “our” in these notes to the consolidated financial statements.

On December 20, 2011, Expedia Group, Inc. (“Expedia”) completed a spin-off of Tripadvisor into a separate publicly traded Delaware corporation. We refer to this transaction as the “Spin-Off.” Tripadvisor’s common stock began trading on the NASDAQ as an independent public company on December 21, 2011, under the trading symbol “TRIP.”

On December 11, 2012, Liberty Interactive Corporation, or Liberty, purchased an aggregate of approximately 4.8 million shares of common stock of Tripadvisor from Barry Diller, our former Chairman of the Board of Directors and Senior Executive, and certain of his affiliates. As a result, Liberty beneficially owned approximately 18.2 million shares of our common stock and 12.8 million shares of our Class B common stock.

On August 27, 2014, the entire beneficial ownership of our common stock and Class B common stock held by Liberty was acquired by Liberty Tripadvisor Holdings, Inc., or LTRIP. Simultaneously, Liberty, LTRIP’s former parent company, distributed, by means of a dividend, to the holders of its Liberty Ventures common stock, Liberty’s entire equity interest in LTRIP. We refer to this transaction as the “Liberty Spin-Off”. As a result of the Liberty Spin-Off, effective August 27, 2014, LTRIP became a separate, publicly traded company holding 100% of Liberty’s interest in Tripadvisor.

As a result of these transactions, as of December 31, 2019, LTRIP beneficially owned approximately 18.2 million shares of our common stock and 12.8 million shares of our Class B common stock, which constitute 14.6% of the outstanding shares of common stock and 100% of the outstanding shares of Class B common stock. Assuming the conversion of all of LTRIP’s shares of Class B common stock into common stock, LTRIP would beneficially own 22.5% of the outstanding common stock. Because each share of Class B common stock is entitled to ten votes per share and each share of common stock is entitled to one vote per share, LTRIP may be deemed to beneficially own equity securities representing 57.9% of our voting power.

Description of Business

Tripadvisor is a leading online travel company and our mission is to help people around the world plan, book and experience the perfect trip. We operate a global travel platform that connects the world’s largest audience of prospective travelers with travel partners through rich content, price comparison tools, and online reservation and related services for destinations, accommodations, travel activities and experiences, and restaurants.

Under our flagship brand, Tripadvisor, we launched www.Tripadvisor.com in the United States in 2000. Since then, we have launched localized versions of the Tripadvisor website in 48 markets and 28 languages worldwide. Tripadvisor features 859 million reviews and opinions on 8.6 million places to stay, places to eat and things to do – including 1.4 million hotels, inns, B&Bs and specialty lodging, 842,000 rental properties, 5.2 million restaurants and 1.2 million travel activities and experiences worldwide. Tripadvisor’s rich content and engaged community attract the world’s largest travel audience, based on monthly unique visitors, including 463 million average monthly unique visitors in the third quarter of 2019 during the peak summer travel season. In addition to the flagship Tripadvisor brand, we own and operate a portfolio of travel media brands and businesses, operating under various websites including the following: www.airfarewatchdog.com, www.bokun.io, www.bookingbuddy.com, www.cruisecritic.com, www.familyvacationcritic.com, www.flipkey.com, www.thefork.com (including www.lafourchette.com, www.eltenedor.com, www.restorando.com, and www.bookatable.co.uk), www.holidaylettings.co.uk, www.holidaywatchdog.com, www.housetrip.com, www.jetsetter.com, www.niumba.com, www.onetime.com, www.oyster.com, www.seatguru.com, www.singleplatform.com, www.smartertravel.com, www.vacationhomerentals.com, and www.viator.com.

During the first quarter of 2019, as part of our continuous review of the business, we evaluated our operations and realigned the reportable segment information which our chief operating decision maker, or CODM, regularly assesses to evaluate performance for operating decision-making purposes, including evaluation and allocation of resources. The CODM for the Company is our Chief Executive Officer. The revised segment reporting structure includes the following reportable segments: (1) Hotels, Media & Platform; and (2) Experiences & Dining. For further information on our segments and principal revenue streams within these segments refer to “Note 4: Revenue Recognition” and “Note 18: Segment and Geographic Information” in the notes to our consolidated financial statements. All prior period segment disclosure information has been reclassified to conform to the current reporting structure in this Form 10-K. These reclassifications had no effect on our consolidated financial statements in any period.

Seasonality

Consumers’ travel expenditures follow a seasonal pattern. Correspondingly, travel partners’ advertising investments and, therefore, our revenue and profits, also follow a seasonal pattern. Our financial performance tends to be seasonally highest in the second and third quarters of a given year, which includes the seasonal peak in consumer demand, traveler hotel and rental stays, and travel activities and experiences taken, compared to the first and fourth quarters, which represent seasonal low points. Significant shifts in our business mix or adverse economic conditions could result in future seasonal patterns that are different from historical trends.