Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Stock-Based Compensation (Details)

v3.20.4
Summary of Significant Accounting Policies - Stock-Based Compensation (Details) - USD ($)
$ in Millions
 12 Months Ended
Jul. 15, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Stock-based compensation   $ 112.0 $ 131.0 $ 123.0
Operating expense        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Stock-based compensation   45.0 56.0 52.0
Selling, general and administrative        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Stock-based compensation   67.0 75.0 71.0
Tripadvisor        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Stock-based compensation $ 17.0 109.0    
Capitalized Stock Based Compensation   $ 15.0 $ 19.0 $ 13.0