Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
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 5 Months Ended 12 Months Ended
May 25, 2017
USD ($)
Mar. 31, 2019
USD ($)
director
executive
$ / shares
shares
Mar. 31, 2018
USD ($)
May 24, 2017
shareholder
Dec. 31, 2017
USD ($)
shares
Mar. 31, 2019
$ / shares
Dec. 31, 2018
USD ($)
May 25, 2017
CAD ($)
Related Party Transaction [Line Items]                
Preferred stock liquidation preference per share (in Canadian dollars per share) | $ / shares   $ 0.001            
Current portion of deferred revenue   $ 1,994         $ 1,932  
Deferred revenue, noncurrent   145         149  
Pandora                
Related Party Transaction [Line Items]                
Pandora investment   $ 0         523  
Management | Liberty Media | Executives                
Related Party Transaction [Line Items]                
Number of related party members on the board of directors | executive   2            
Management | Liberty Media | Director                
Related Party Transaction [Line Items]                
Number of related party members on the board of directors | director   1            
Management | Liberty Media | Common Stock                
Related Party Transaction [Line Items]                
Related party ownership percentage   68.00%            
Equity Method Investee                
Related Party Transaction [Line Items]                
Notes receivable, related parties $ 131              
Notes receivable, maturity period 15 years              
Interest rate 7.62%              
Annual principal repayment period 60 days              
Annual prepayment cash threshold               $ 10
Notes receivable, repayment from related party     $ 3          
Current portion of deferred revenue   $ 3         3  
Deferred revenue, noncurrent   $ 2         2  
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]                
Percent of gross revenue receivable 25.00%              
Equity Method Investee | Services Agreement, Years 6 Through 30                
Related Party Transaction [Line Items]                
Percent of gross revenue receivable 30.00%              
Equity Method Investee | Advisory Services Agreement                
Related Party Transaction [Line Items]                
Period of agreement 30 years              
Percent of gross revenue receivable 5.00%              
Equity Method Investee | Common Stock                
Related Party Transaction [Line Items]                
Issuance of common stock as part of recapitalization of Sirius XM Canada (in shares) | shares         35      
Equity Method Investee | Sirius XM Canada                
Related Party Transaction [Line Items]                
Equity method investment, equity interest percentage   70.00%            
Equity method investment, voting interest percentage   33.00%            
Number of shareholders | shareholder       2        
Consideration transferred         $ 309      
Payments to acquire equity method investments         130      
Consideration transferred, equity interests issued and issuable         $ 179      
Number of preferred shares owned (in shares) | shares   591            
Preferred stock liquidation preference per share (in Canadian dollars per share) | $ / shares           $ 1    
Notes receivable, related parties   $ 128         126  
Equity method investments   320         311  
Maximum | Equity Method Investee                
Related Party Transaction [Line Items]                
Notes receivable, repayment from related party   1            
Maximum | Equity Method Investee | Sirius XM Canada                
Related Party Transaction [Line Items]                
Equity method investment, dividends, including reduction of investment   1 $ 1          
Fair Value, Inputs, Level 2 | Pandora                
Related Party Transaction [Line Items]                
Pandora investment   $ 0         $ 523