Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Liberty Media, Sirius XM Canada, Pandora - Additional Information (Details)

v3.19.3
Related Party Transactions - Liberty Media, Sirius XM Canada, Pandora - Additional Information (Details)
$ / shares in Units, $ / shares in Units, shares in Millions, $ in Millions, $ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
May 25, 2017
CAD ($)
Sep. 30, 2019
USD ($)
director
executive
$ / shares
shares
Sep. 30, 2018
USD ($)
Sep. 30, 2019
USD ($)
director
executive
$ / shares
shares
Sep. 30, 2018
USD ($)
Dec. 31, 2017
USD ($)
shares
Sep. 30, 2019
$ / shares
Dec. 31, 2018
USD ($)
Related Party Transaction [Line Items]                
Preferred stock liquidation preference per share (in dollars per share) | $ / shares   $ 0.001   $ 0.001        
Pandora                
Related Party Transaction [Line Items]                
Pandora investment   $ 0   $ 0       $ 523
Management | Liberty Media | Executives                
Related Party Transaction [Line Items]                
Number of related party members on board of directors | executive   2,000   2,000        
Management | Liberty Media | Director                
Related Party Transaction [Line Items]                
Number of related party members on board of directors | director   1,000   1,000        
Management | Liberty Media | Common Stock                
Related Party Transaction [Line Items]                
Related party ownership percentage   71.00%   71.00%        
Equity Method Investee                
Related Party Transaction [Line Items]                
Notes receivable, related parties $ 131              
Proceeds from related party debt         $ 3      
Equity Method Investee | Services Agreement                
Related Party Transaction [Line Items]                
Period of agreement 30 years              
Equity Method Investee | Services Agreement, Years 1 Through 5                
Related Party Transaction [Line Items]                
Payments receivable, percentage of gross revenue 25.00%              
Equity Method Investee | Services Agreement, Years 6 Through 30                
Related Party Transaction [Line Items]                
Payments receivable, percentage of gross revenue 30.00%              
Equity Method Investee | Advisory Services Agreement                
Related Party Transaction [Line Items]                
Period of agreement 30 years              
Payments receivable, percentage of gross revenue 5.00%              
Equity Method Investee | Common Stock                
Related Party Transaction [Line Items]                
Shares issued in purchase | shares           35    
Equity Method Investee | Sirius XM Canada                
Related Party Transaction [Line Items]                
Equity method investment, equity interest percentage   70.00%   70.00%        
Equity method investment, voting interest percentage   33.00%   33.00%        
Consideration transferred           $ 309    
Payments to acquire equity method investments           130    
Equity interests issued and issuable           $ 179    
Number of preferred shares owned | shares   591   591        
Preferred stock liquidation preference per share (in dollars per share) | $ / shares             $ 1  
Notes receivable, related parties   $ 129   $ 129       126
Equity method investments   322   322       311
Revenue from related parties   25 $ 25 73 72      
Maximum | Equity Method Investee                
Related Party Transaction [Line Items]                
Proceeds from related party debt       1        
Maximum | Equity Method Investee | Sirius XM Canada                
Related Party Transaction [Line Items]                
Equity method investment, dividends, including reduction of investment   1 $ 1 1 $ 2      
Fair Value, Inputs, Level 2 | Pandora                
Related Party Transaction [Line Items]                
Pandora investment   $ 0   $ 0       $ 523