Annual report pursuant to Section 13 and 15(d)

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

v3.10.0.1
Related Party Transactions - Liberty Media, Sirius XM Canada - Additional Information (Details)
$ / shares in Units, $ / shares in Units, shares in Thousands, $ in Thousands
5 Months Ended 12 Months Ended
May 25, 2017
USD ($)
May 24, 2017
shareholder
Dec. 31, 2018
USD ($)
director
executive
$ / shares
shares
Dec. 31, 2017
USD ($)
shares
Dec. 31, 2018
$ / shares
Jan. 01, 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     $ 1,931,613 $ 1,881,825   $ 1,839,923  
Deferred revenue, noncurrent     $ 148,983 $ 174,579   $ 170,589  
Common Stock              
Related Party Transaction [Line Items]              
Issuance of common stock as part of recapitalization of Sirius XM Canada (in shares) | shares       35,000      
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     73.00%        
Equity Method Investee              
Related Party Transaction [Line Items]              
Notes receivable, related parties $ 130,794            
Notes receivable, maturity period 15 years            
Interest rate 7.62%            
Annual principal repayment period 60 days            
Annual prepayment cash threshold             $ 10,000,000
Notes receivable, repayment from related party     $ 3,242        
Current portion of deferred revenue     2,776 $ 2,776      
Deferred revenue, noncurrent     $ 2,312 $ 5,088      
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]              
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       35,000      
Equity Method Investee | Sirius XM Canada              
Related Party Transaction [Line Items]              
Equity method investment, equity interest 70.00%           70.00%
Equity method investment, voting interest 33.00%           33.00%
Number of shareholders | shareholder   2          
Consideration transferred       $ 308,526      
Payments to acquire equity method investments       129,676      
Consideration transferred, equity interests issued and issuable       178,850      
Number of preferred shares owned (in shares) | shares     590,950        
Preferred stock liquidation preference per share (in Canadian dollars per share) | $ / shares         $ 1    
Notes receivable, related parties     $ 126,013 140,073      
Equity method investments     $ 311,213 $ 341,214