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)

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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, 2020
Dec. 31, 2019
Dec. 31, 2018
QRTEA      
Weighted average grant fair value      
Outstanding at beginning of the year (in dollars per share) $ 19.45    
Granted (in dollars per share) 4.51 $ 16.83 $ 26.23
Vested (in dollars per share) 20.77    
Forfeited (in dollars per share) 10.63    
Outstanding at end of the year (in dollars per share) $ 7.04 $ 19.45  
QRTEA [Member]      
Restricted shares      
Outstanding at beginning of the year (in shares) 2,501,135    
Granted (in shares) 6,022,963    
Vested (927,850)    
Forfeited (in shares) (861,259)    
Outstanding at end of the year (in shares) 6,734,989 2,501,135