Significant Accounting Policies (Policies)	3 Months Ended
Significant Accounting Policies (Policies)	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited financial statements present our results of operations, financial position and cash flows on a consolidated basis. The accompanying unaudited consolidated financial statements include TripAdvisor, our wholly-owned subsidiaries, and entities we control, or in which we have a variable interest and are the primary beneficiary of expected cash profits or losses. We have eliminated significant intercompany transactions and accounts. Certain of our subsidiaries that operate in China have variable interests in affiliated entities in China in order to comply with Chinese laws and regulations, which restrict foreign investment in Internet content provision businesses. Although we do not own the capital stock of some of our Chinese affiliates, we consolidate their results as we are the primary beneficiary of the cash losses or profits of these variable interest affiliates and have the power to direct the activities of these affiliates. Our variable interest entities are not material for all periods presented. We have prepared the accompanying unaudited consolidated financial statements in accordance with accounting principles generally accepted in the United States (“GAAP”). We have included all adjustments necessary for a fair presentation of the results of the interim period. These adjustments consist of normal recurring items. We prepared the unaudited consolidated financial statements following the requirements of the U.S. Securities and Exchange Commission (“SEC”) for interim reporting. As permitted under those rules, we have condensed or omitted certain footnotes or other financial information that are normally required by GAAP for annual financial statements. Our interim unaudited consolidated financial statements are not necessarily indicative of results that may be expected for any other interim period or for the full year. These interim unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2014, previously filed with the SEC.
Reclassifications	Reclassifications Pursuant to our disclosure in “Note 16— Segment and Geographic Information” in the notes to our consolidated financial statements in Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2014, management revised our reportable segments. All prior periods disclosures have been reclassified to conform to the current reporting structure. These reclassifications had no effect on our unaudited consolidated financial statements. All other reclassifications made to conform the prior period to the current presentation, were not material and had no net effect on our unaudited consolidated financial statements.
Accounting Estimates	Accounting Estimates We use estimates and assumptions in the preparation of our unaudited consolidated financial statements in accordance with GAAP. Our estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of our unaudited consolidated financial statements. These estimates and assumptions also affect the reported amount of net income or loss during any period. Our actual financial results could differ significantly from these estimates. The significant estimates underlying our unaudited consolidated financial statements include: (i) recoverability of intangible assets and goodwill, (ii) recoverability and useful life of long-lived assets, (iii) accounting for income taxes, (iv) purchase accounting for business combinations and (v) stock-based compensation.
Seasonality	Seasonality Expenditures by travel advertisers tend to be seasonal. Traditionally, our strongest quarter has been the third quarter, which is a key travel research period, with the weakest quarter being the fourth quarter. However, adverse economic conditions or continued growth of our international operations with differing holiday peaks may influence the typical trend of our seasonality in the future.
New Accounting Pronouncements Not Yet Adopted	New Accounting Pronouncements Not Yet Adopted Revenue From Contracts With Customers In May 2014, the Financial Accounting Standards Board (“FASB”) issued new accounting guidance on revenue from contracts with customers. The new guidance requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The updated guidance will replace most existing revenue recognition guidance in GAAP when it becomes effective and permits the use of either a retrospective or cumulative effect transition method. In April 2015, the FASB proposed deferring the effective date by one year to December 15, 2017, for annual reporting periods beginning after that date. The FASB also proposed permitting early adoption of the standard, but not before the original effective date of December 15, 2016. We have not yet selected a transition method and we are currently evaluating the effect that the updated standard will have on our unaudited consolidated financial statements and related disclosures.