Annual report pursuant to Section 13 and 15(d)

Basis of Presentation - Description of Business (Details)

v3.20.4
Basis of Presentation - Description of Business (Details)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Mar. 26, 2020
$ / shares
shares
Dec. 31, 2019
USD ($)
shares
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
item
shares
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
Jul. 31, 2020
USD ($)
Redeemable preferred stock, shares issued | shares 325,000 0   325,000 0    
Dividend rate percentage 8.00%            
Redeemable preferred stock, par value | $ / shares $ 0.01            
Shares issued price per share | $ / shares $ 1,000            
Number of markets with localized websites | item       48      
Number of languages worldwide | item       28      
Liberty Media              
Related Party Transaction, Amounts of Transaction       $ 4.0 $ 4.0 $ 3.0  
Liberty Media | CEO              
CEO compensation allocation percentage   5.00%          
Employment agreement term   5 years          
Annual base salary   $ 3.0          
One-time cash commitment bonus   5.0          
Annual target cash performance bonus   17.0          
Annual equity awards   17.5          
Upfront awards   $ 90.0          
Tripadvisor              
Income tax expense (benefit), CARES Act       (23.0)      
Government grants and other assistance       12.0      
Proceeds from government grants and other assistance       10.0      
Tripadvisor | 2015 Credit Facilities              
Borrowing on line of credit     $ 700.0        
Tripadvisor | Senior Note              
Debt Instrument, Face Amount             $ 500.0
Tripadvisor | Other current assets              
Payroll tax credits receivable under the CARES Act       $ 2.0