Annual report pursuant to Section 13 and 15(d)

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

v3.10.0.1
Stock Options and Other Share-Based Awards Stock Options and Other Share- Based Awards (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation $ 46 $ 39 $ 32
Liberty Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Intrinsic value of options exercised during period 20 32 28
Unrecognized compensation cost related to options $ 49    
Unrecognized compensation cost, period for recognition 2 years 5 months    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value $ 37 10 8
Liberty Incentive Plan | Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation 28 29 21
Liberty Incentive Plan | Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation 18 $ 10 $ 11
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options $ 24    
Unrecognized compensation cost, period for recognition 2 years 3 months    
Liberty Incentive Plan | QRTEA      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted average grant date fair value of options granted during period $ 8.52 $ 7.86 $ 7.84
Granted (in dollars per share) $ 26.23 $ 22.49 $ 25.86
HSN, Inc.      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Ownership Percentage by Parent 100.00%