Annual report pursuant to Section 13 and 15(d)

Stock Options and Other Share-Based Awards Stock Options and Other Share- Based Awards (Stock Options Activity) (Details)

v3.8.0.1
Stock Options and Other Share-Based Awards Stock Options and Other Share- Based Awards (Stock Options Activity) (Details) - Liberty Incentive Plan - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
QVCA    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Outstanding at beginning of the year (in shares) 12,536,399  
Granted (in shares) 3,114,919  
Transferred from zulily (in shares) 12,860  
Exercised (in shares) (2,857,069)  
Forfeited (in shares) (954,641)  
Outstanding at end of the year (in shares) 11,852,468 12,536,399
Weight average exercise price    
Outstanding at beginning of year (in dollars per share) $ 22.80  
Granted (in dollars per share) 23.69  
Transferred from zulily (in dollars per share) 24.13  
Exercised (in dollars per share) 16.74  
Forfeited (in dollars per share) 26.58  
Outstanding at ending of year (in dollars per share) $ 24.19 $ 22.80
Additional Stock Option Disclosures    
Aggregate intrinsic value (000s) $ 19,663 $ 16,511
Weighted average remaining life (years) 4 years 6 months 4 years 2 months
Exercisable at December 31, 2017    
Options (in shares) 5,424,770  
Weighted average exercise price (in dollars per share) $ 22.74  
Aggregate intrinsic value (000s) $ 17,572  
Weighted average remaining life (years) 3 years 6 months  
LVNTA    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Outstanding at beginning of the year (in shares) 302,467  
Granted (in shares) 0  
Exercised (in shares) (302,467)  
Forfeited (in shares) 0  
Outstanding at end of the year (in shares) 0 302,467
Weight average exercise price    
Outstanding at beginning of year (in dollars per share) $ 16.69  
Granted (in dollars per share) 0  
Exercised (in dollars per share) 16.69  
Forfeited (in dollars per share) 0.00  
Outstanding at ending of year (in dollars per share) $ 0.00 $ 16.69
Additional Stock Option Disclosures    
Aggregate intrinsic value (000s) $ 0 $ 6,104
Weighted average remaining life (years) 0 years 1 year 2 months
Exercisable at December 31, 2017    
Options (in shares) 0  
Weighted average exercise price (in dollars per share) $ 0.00  
Aggregate intrinsic value (000s) $ 0  
Weighted average remaining life (years) 0 years