Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2019
Feb. 12, 2020
Jun. 30, 2019
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Entity Registrant Name TRIPADVISOR, INC.    
Trading Symbol TRIP    
Entity Central Index Key 0001526520    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Large Accelerated Filer    
Entity Shell Company false    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Public Float     $ 4,872,586,695
Entity File Number 001-35362    
Entity Tax Identification Number 80-0743202    
Entity Address, Address Line One 400 1st Avenue    
Entity Address, City or Town Needham    
Entity Address, State or Province MA    
Entity Address, Postal Zip Code 02494    
City Area Code 781    
Local Phone Number 800-5000    
Entity Interactive Data Current Yes    
Title of 12(b) Security Common stock    
Security Exchange Name NASDAQ    
Entity Incorporation, State or Country Code DE    
Document Annual Report true    
Document Transition Report false    
Documents Incorporated by Reference

Documents Incorporated by Reference

The registrant intends to file a proxy statement pursuant to Regulation 14A not later than 120 days after the close of the fiscal year ended December 31, 2019. Portions of such proxy statement are incorporated by reference into Part III of this Annual Report on Form 10-K.

Common Stock, Unclassified      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   123,286,835  
Class B Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   12,799,999