Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Revenue Recognition (Details)

v3.19.3.a.u2
Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]    
Customer invoices due 30 days  
Tripadvisor    
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]    
Maximum subscription advertising service contact period 1 year  
Capitalized contract costs $ 4 $ 2
Customer invoices due 30 days  
Practical expedient, incremental costs true  
Practical expedient, remaining performance obligation true  
Tripadvisor | Selling, general and administrative    
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]    
Contract cost amortization $ 1