Quarterly report pursuant to Section 13 or 15(d)

Recent Accounting Pronouncements - Disaggregation of Revenue (Details)

v3.10.0.1
Recent Accounting Pronouncements - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2018
Disaggregation of Revenue [Line Items]    
Revenue $ 458 $ 1,269
Trip Advisor    
Disaggregation of Revenue [Line Items]    
Revenue 458 1,269
Trip Advisor | Revenue recognized at a Point in Time | Hotel    
Disaggregation of Revenue [Line Items]    
Revenue 305 917
Trip Advisor | Revenue recognized at a Point in Time | TripAdvisor-branded click-based Advertising and Transaction Revenue    
Disaggregation of Revenue [Line Items]    
Revenue 194 583
Trip Advisor | Revenue recognized at a Point in Time | TripAdvisor-branded display-based Advertising and Subscription Revenue    
Disaggregation of Revenue [Line Items]    
Revenue 81 231
Trip Advisor | Revenue recognized at a Point in Time | Other Hotel Revenue    
Disaggregation of Revenue [Line Items]    
Revenue 30 103
Trip Advisor | Revenue recognized at a Point in Time | Non-Hotel    
Disaggregation of Revenue [Line Items]    
Revenue $ 153 $ 352