Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - SIRIUS XM Holdings (Details)

v3.20.4
Stock-Based Compensation - SIRIUS XM Holdings (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Stock-Based Compensation      
Stock-based compensation expense $ 261.0 $ 312.0 $ 192.0
Total unrecognized compensation cost related to unvested equity awards $ 56.0    
Weighted average period of recognition related to unvested equity awards (in years) 2 years    
Sirius XM Holdings      
Stock-Based Compensation      
Stock-based compensation expense $ 223.0 229.0 $ 133.0
Sirius XM Holdings | Pandora      
Stock-Based Compensation      
Stock-based compensation expense   $ 21.0  
Sirius XM Holdings | Employee Stock Option      
Stock-Based Compensation      
Term of option 10 years    
Weighted average volatility rate 28.00% 26.00% 23.00%
Granted 11.0    
Granted, WAEP $ 6.87    
Weighted average GDFV $ 1.46    
Outstanding options 184.0    
Exercisable options 147.0    
Outstanding WAEP $ 4.73    
Exercisable WAEP $ 4.31    
Aggregate intrinsic value, outstanding $ 318.0    
Aggregate intrinsic value, exercisable 309.0    
Total unrecognized compensation cost related to unvested equity awards $ 385.0    
Weighted average period of recognition related to unvested equity awards (in years) 2 years 7 months 6 days    
Sirius XM Holdings | Employee Stock Option | Minimum      
Stock-Based Compensation      
Vesting period 3 years    
Sirius XM Holdings | Employee Stock Option | Maximum      
Stock-Based Compensation      
Vesting period 4 years    
Sirius XM Holdings | Restricted Stock      
Stock-Based Compensation      
RSUs granted 37.0    
RSUs GDFV $ 6.14