Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - TripAdvisor Awards (Details)

v3.21.1
Stock-Based Compensation - TripAdvisor Awards (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Additional disclosures    
Stock-based compensation $ 30 $ 27
2019 Plan    
Additional disclosures    
Weighted average period the unrecognized compensation cost will be recognized 2 years 2 months 12 days  
Tripadvisor    
Additional disclosures    
Stock-based compensation $ 29 $ 26
Tripadvisor | 2018 Plan | RSUs and MSUs    
Additional disclosures    
Weighted average period the unrecognized compensation cost will be recognized 2 years 6 months  
RSUs and MSUs granted (in shares) 2,000  
RSUs and MSUs vested (in shares) 2,000  
Weighted average grant date fair value, RSUs and MSUs granted (in dollars per share) $ 45.79  
Weighted average grant date fair value, RSUs and MSUs vested (in dollars per share) 33.94  
Weighted average grant date fair value, RSUs and MSUs cancelled (in dollars per share) $ 32.14  
Unrecognized compensation cost, unvested RSUs and MSUs $ 212  
Tripadvisor | 2011 and 2018 Plans | Stock Options    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Outstanding beginning balance 5,615  
Granted 699  
Exercised (628)  
Cancelled or expired (94)  
Outstanding ending balance 5,592  
Options exercisable 3,203  
WAEP    
Weighted average exercise price, options outstanding (in dollars per share) $ 46.31  
Weighted average exercise price, options granted (in dollars per share) 45.92  
Weighted average exercise price, options exercised (in dollars per share) 34.70  
Weighted average exercise price, options cancelled or expired (in dollars per share) 40.93  
Weighted average exercise price, options outstanding (in dollars per share) 47.66  
Weighted average exercise price, options exercisable (in dollars per share) $ 55.64  
Weighted average remaining contractual term outstanding 5 years 7 months 6 days  
Weighted average remaining contractual term exercisable 3 years 8 months 12 days  
Outstanding, aggregate intrinsic value $ 62  
Exercisable, aggregate intrinsic value $ 22  
Additional disclosures    
Weighted average grant date fair value, options (in dollars per share) $ 20.35  
Stock options exercised intrinsic value $ 8  
Unrecognized compensation cost, unvested options (in dollars) $ 28  
Weighted average period the unrecognized compensation cost will be recognized 2 years 7 months 6 days