Quarterly report pursuant to Section 13 or 15(d)

Recent Accounting Pronouncements - Disaggregation of Revenue (Details)

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Recent Accounting Pronouncements - Disaggregation of Revenue (Details) - Trip Advisor
$ in Millions
3 Months Ended
Mar. 31, 2018
USD ($)
Disaggregation of Revenue [Line Items]  
Revenue $ 378
Hotel  
Disaggregation of Revenue [Line Items]  
Revenue 299
Click-based Advertising and Transaction Revenue  
Disaggregation of Revenue [Line Items]  
Revenue 189
Display-based Advertising and Subscription Revenue  
Disaggregation of Revenue [Line Items]  
Revenue 71
Other Hotel Revenue  
Disaggregation of Revenue [Line Items]  
Revenue 39
Non-Hotel  
Disaggregation of Revenue [Line Items]  
Revenue $ 79