v2.4.0.8
Document and Entity Information (USD $)
12 Months Ended
Dec. 31, 2014
Jun. 30, 2014
Feb. 28, 2015
Series A
Feb. 28, 2015
Series B
Entity Registrant Name Liberty TripAdvisor Holdings, Inc.      
Entity Central Index Key 0001606745      
Document Type 10-K      
Document Period End Date Dec. 31, 2014      
Amendment Flag false      
Current Fiscal Year End Date --12-31      
Entity Well-known Seasoned Issuer No      
Entity Voluntary Filers No      
Entity Current Reporting Status Yes      
Entity Filer Category Non-accelerated Filer      
Entity Public Float   $ 0    
Entity Common Stock, Shares Outstanding     71,709,941 2,929,777
Document Fiscal Year Focus 2014      
Document Fiscal Period Focus FY