Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - SIRIUS XM (Details)

v3.10.0.1
Stock-Based Compensation - SIRIUS XM (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Weighted average period of recognition related to unvested equity awards (in years)     1 year 8 months 12 days  
Stock-based compensation $ 53 $ 53 $ 99 $ 97
Total unrecognized compensation cost related to unvested equity awards $ 40   $ 40  
SIRIUS XM        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Outstanding options 248   248  
Exercisable options 116   116  
Outstanding WAEP $ 3.96   $ 3.96  
Exercisable WAEP $ 3.40   $ 3.40  
Outstanding options, aggregate intrinsic value $ 695   $ 695  
Exercisable Options, Aggregate Intrinsic Value 389   $ 389  
Weighted average period of recognition related to unvested equity awards (in years)     1 year 8 months 12 days  
Stock-based compensation 36 $ 30 $ 70 $ 59
Total unrecognized compensation cost related to unvested equity awards $ 252   $ 252  
SIRIUS XM | Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Restricted stock granted     7  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value     $ 6.27