Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation - TripCo Outstanding Awards (Details)

v3.10.0.1
Stock Based Compensation - TripCo Outstanding Awards (Details) - USD ($)
$ / shares in Units, $ in Millions
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Stock-Based Compensation    
Dividend rate 0.00%  
Liberty Incentive Plans | Series A    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Options outstanding 681,000  
Granted 0  
Exercised (3,000)  
Cancelled or expired (149,000)  
Options outstanding 529,000  
Options exercisable 422,000  
WAEP    
Weighted average exercise price, options outstanding (in dollars per share) $ 14.68  
Weighted average exercise price, options exercised (in dollars per share) 9.49  
Weighted average exercise price, options forfeited/cancelled (in dollars per share) 14.12  
Weighted average exercise price, options outstanding (in dollars per share) 14.86  
Weighted average exercise price, options exercisable (in dollars per share) $ 16.16  
Weighted average remaining contractual term outstanding 2 years 7 months 6 days  
Weighted average remaining contractual term exercisable 1 year 8 months 12 days  
Outstanding, aggregate intrinsic value $ 1  
Liberty Incentive Plans | Series B    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Options outstanding increase (decrease) 0  
2011 Plan | Trip Advisor    
Additional disclosures    
Stock options exercised intrinsic value   $ 8
2014 Plan    
Additional disclosures    
Unvested value not yet recognized $ 6  
Weighted average period the unrecognized compensation cost will be recognized 1 year 9 months 18 days  
Common Stock, Capital Shares Reserved for Future Issuance 2,300,000  
Stock Options | 2011 Plan | Trip Advisor    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Options outstanding 6,853,000  
Granted 632,000  
Exercised (619,000)  
Cancelled or expired (266,000)  
Options outstanding 6,600,000  
Options exercisable 3,764,000  
WAEP    
Weighted average grant date fair value, options (in dollars per share) $ 17.72  
Weighted average exercise price, options outstanding (in dollars per share) 52.78  
Weighted average exercise price, options granted (in dollars per share) 41.87  
Weighted average exercise price, options exercised (in dollars per share) 36.46  
Weighted average exercise price, options forfeited/cancelled (in dollars per share) 51.93  
Weighted average exercise price, options outstanding (in dollars per share) 53.29  
Weighted average exercise price, options exercisable (in dollars per share) $ 58.79  
Weighted average remaining contractual term outstanding 6 years 3 months 18 days  
Weighted average remaining contractual term exercisable 4 years 6 months  
Outstanding, aggregate intrinsic value $ 44  
Exercisable, aggregate intrinsic value $ 19  
Additional disclosures    
Weighted average period the unrecognized compensation cost will be recognized 3 years  
Unrecognized compensation cost, unvested options (in dollars) $ 39  
Weighted average grant date fair value, options (in dollars per share) $ 17.72  
Stock options exercised intrinsic value $ 7  
RSUs and MSUs | 2018 Plan and Amended and Restated 2011 Plan | Trip Advisor    
Additional disclosures    
Weighted average period the unrecognized compensation cost will be recognized 2 years 9 months 18 days  
Unrecognized compensation cost, unvested options (in dollars) $ 253  
Weighted average exercise price, grant date fair value (in dollars per share) $ 42.56  
RSUs granted (in shares) 3,334,000