Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Details)

v3.10.0.1
Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended 36 Months Ended
Jul. 23, 2014
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2018
Total unrecognized compensation cost related to unvested equity awards   $ 22     $ 22
Weighted average period of recognition related to unvested equity awards (in years)   1 year 3 months 18 days      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value   $ 22 $ 31 $ 24  
2017 Plan          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized   50,000,000     50,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate   0.00% 0.00% 0.00%  
Minimum | 2017 Plan          
Vesting period   1 year      
Term of option   7 years      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term         3 years 6 months
Maximum | 2017 Plan          
Vesting period   5 years      
Term of option   10 years      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term         6 years 3 months 18 days
Employee Stock Option          
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum   23.50% 22.60% 22.60%  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum   26.00% 29.80% 26.80%  
Employee Stock Option | Formula 1 employees [member]          
Vesting period   1 year      
Employee Stock Option | Liberty employees          
Vesting period   3 years      
Term of option   5 years      
Employee Stock Option | Liberty Director          
Term of option   1 year      
Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value   $ 9 $ 85 $ 7  
Performance based RSUs | CEO | Common Class C          
Vesting period   1 year 1 year 1 year  
Liberty Sirius XM Group          
Common Stock, Capital Shares Reserved for Future Issuance   12,900,000     12,900,000
Liberty Sirius XM Group | Common Class C          
Options granted   666,000      
Liberty Sirius XM Group | CEO | Common Class C          
Options granted   139,000 171,000    
Weighted average grant-date fair value   $ 8.80 $ 8.96    
Liberty Sirius XM Group | Employee Stock Option | Liberty employees and directors [member] | Common Class C          
Options granted   21,000 153,000 101,000  
Weighted average grant-date fair value   $ 8.99 $ 9.42 $ 4.89  
Liberty Sirius XM Group | Restricted Stock          
Restricted stock weighted average grant-date fair value   $ 26.74     $ 26.74
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number   218,000     218,000
Braves Group          
Common Stock, Capital Shares Reserved for Future Issuance   1,500,000     1,500,000
Braves Group | Common Class C          
Options granted   51,000      
Braves Group | CEO | Common Class C          
Options granted   46,000 149,000    
Weighted average grant-date fair value   $ 6.44 $ 6.02    
Performance based restricted stock granted shares   12,000      
Performance based restricted stock unit grant date fair value   $ 23.34      
Braves Group | Employee Stock Option | Liberty employees and directors [member] | Common Class C          
Options granted   5,000 35,000 41,000  
Weighted average grant-date fair value   $ 7.14 $ 6.14 $ 3.79  
Braves Group | Restricted Stock          
Restricted stock weighted average grant-date fair value   $ 20.16     $ 20.16
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number   46,000     46,000
Liberty Media Corporation | Common Class C          
Number of Shares Issued During The Period For Each Share of Series A and Series B Stock Held By Shareholders Prior To The Distribution 2        
Liberty Media Corporation | CEO | Common Class C          
Options granted       775,000  
Weighted average grant-date fair value       $ 8.91  
Performance based restricted stock granted shares       39,000  
Performance based restricted stock unit grant date fair value       $ 37.76  
Liberty Media Corporation | Employee Stock Option | Liberty employees and directors [member] | Common Class C          
Options granted       10,000  
Weighted average grant-date fair value       $ 8.33  
Formula One Group          
Common Stock, Capital Shares Reserved for Future Issuance   7,000,000     7,000,000
Formula One Group | Common Class C          
Options granted   2,048,000      
Formula One Group | CEO | Common Class C          
Performance based restricted stock granted shares   86,000 50,000    
Performance based restricted stock unit grant date fair value   $ 31.99 $ 33.92    
Formula One Group | Formula 1 employees [member] | Common Class C          
Options granted   633,000 920,000    
Weighted average grant-date fair value   $ 11.56 $ 8.50    
Formula One Group | Liberty employees and directors [member] | Common Class C          
Options granted   1,888,000 2,015,000    
Weighted average grant-date fair value   $ 8.64 $ 8.16    
Formula One Group | Employee Stock Option | CEO | Common Class C          
Options granted   33,000 263,000 415,000  
Weighted average grant-date fair value   $ 11.09 $ 10.39 $ 7.50  
Formula One Group | Restricted Stock          
Restricted stock weighted average grant-date fair value   $ 28.79     $ 28.79
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number   211,000     211,000