Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.20.2
Document and Entity Information - shares
 9 Months Ended
Sep. 30, 2020
Oct. 31, 2020
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2020  
Document Transition Report false  
Entity File Number 001-36603  
Entity Registrant Name LIBERTY TRIPADVISOR HOLDINGS, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 46-3337365  
Entity Address, Address Line One 12300 Liberty Boulevard  
Entity Address, City or Town Englewood  
Entity Address, State or Province CO  
Entity Address, Postal Zip Code 80112  
City Area Code 720  
Local Phone Number 875-5200  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q3  
Entity Central Index Key 0001606745  
Amendment Flag false  
Series A    
Document Information [Line Items]    
Title of 12(b) Security Series A common stock  
Trading Symbol LTRPA  
Security Exchange Name NASDAQ  
Entity Common Stock, Shares Outstanding   72,167,796
Series B    
Document Information [Line Items]    
Title of 12(b) Security Series B common stock  
Trading Symbol LTRPB  
Security Exchange Name NASDAQ  
Entity Common Stock, Shares Outstanding   2,952,569