Document and Entity Information - shares
9 Months Ended
Sep. 30, 2019
Oct. 31, 2019
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Entity Registrant Name TripAdvisor, Inc.  
Trading Symbol TRIP  
Entity Central Index Key 0001526520  
Entity Current Reporting Status Yes  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Shell Company false  
Entity Small Business false  
Entity Emerging Growth Company false  
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 Quarterly Report true  
Document Transition Report false  
Common Stock, Unclassified    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   126,591,959
Class B Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   12,799,999