Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.19.3.a.u2
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Jan. 31, 2020
Jun. 28, 2019
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
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 Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
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    
Entity Public Float     $ 854
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001606745    
Amendment Flag false    
Series A      
Document Information [Line Items]      
Title of 12(b) Security Series A common stock, par value $.01 per share    
Trading Symbol LTRPA    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   72,154,703  
Series B      
Document Information [Line Items]      
Title of 12(b) Security Series B common stock, par value $.01 per share    
Trading Symbol LTRPB    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   2,929,401