Annual report pursuant to Section 13 and 15(d)

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

v3.10.0.1
Stock Options and Other Share-Based Awards Stock Options and Other Share-Based Awards (Restricted Stock Activity) (Details) - Liberty Incentive Plan - $ / shares
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
QRTEA      
Weighted average grant fair value      
Outstanding at beginning of the year (in dollars per share) $ 24.49    
Granted (in dollars per share) 26.23 $ 22.49 $ 25.86
Lapsed (in dollars per share) 24.21    
Forfeited (in dollars per share) 26.06    
Outstanding at end of the year (in dollars per share) $ 25.42 $ 24.49  
QRTEA [Member]      
Restricted shares      
Outstanding at beginning of the year (in shares) 2,393,700    
Granted (in shares) 910,559    
Lapsed (in shares) (1,516,428)    
Forfeited (in shares) (300,906)    
Outstanding at end of the year (in shares) 1,599,293 2,393,700  
LVNTA      
Restricted shares      
Outstanding at beginning of the year (in shares) 4,061    
Granted (in shares) 0    
Lapsed (in shares) (3,839)    
Forfeited (in shares) (222)    
Outstanding at end of the year (in shares) 0 4,061  
Weighted average grant fair value      
Outstanding at beginning of the year (in dollars per share) $ 51.47    
Granted (in dollars per share) 0.00    
Lapsed (in dollars per share) 51.54    
Forfeited (in dollars per share) 50.52    
Outstanding at end of the year (in dollars per share) 0.00 $ 51.47  
zulily, llc | QRTEA      
Weighted average grant fair value      
Transferred during period (in dollars per share) $ 24.02    
zulily, llc | QRTEA [Member]      
Restricted shares      
Transferred during period (in shares) 110,550    
Cornerstone Brands Inc [Member] | QRTEA      
Weighted average grant fair value      
Transferred during period (in dollars per share) $ 24.42    
Cornerstone Brands Inc [Member] | QRTEA [Member]      
Restricted shares      
Transferred during period (in shares) 1,818