Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - SIRIUS XM (Details)

v3.8.0.1
Stock-Based Compensation - SIRIUS XM (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2018
Mar. 31, 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 7 months 6 days  
Stock-based compensation $ 46 $ 44
Total unrecognized compensation cost related to unvested equity awards $ 49  
SIRIUS XM    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Outstanding options 268  
Exercisable options 114  
Outstanding WAEP $ 3.86  
Exercisable WAEP $ 3.24  
Outstanding options, aggregate intrinsic value $ 638  
Exercisable Options, Aggregate Intrinsic Value $ 341  
Weighted average period of recognition related to unvested equity awards (in years) 2 years 8 months 12 days  
Stock-based compensation $ 34 $ 29
Total unrecognized compensation cost related to unvested equity awards $ 259  
SIRIUS XM | Restricted Stock    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Restricted stock granted 5  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 6.02