Annual report pursuant to Section 13 and 15(d)

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

v3.8.0.1
Related Party Transactions - Liberty Media, Sirius XM Canada - Additional Information (Details)
CAD / shares in Units, $ / shares in Units, shares in Thousands, $ in Thousands
5 Months Ended 12 Months Ended
May 25, 2017
USD ($)
May 24, 2017
shareholder
Dec. 31, 2017
USD ($)
director
executive
$ / shares
shares
Dec. 31, 2017
CAD / shares
May 25, 2017
CAD
Dec. 31, 2016
USD ($)
Related Party Transaction [Line Items]            
Preferred stock liquidation preference per share (in dollars per share) | $ / shares     $ 0.001      
Current portion of deferred revenue     $ 1,881,825     $ 1,832,609
Deferred revenue, noncurrent     $ 174,579     176,319
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     70.00%      
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 | CAD         CAD 10,000,000  
Current portion of deferred revenue     $ 2,776     2,776
Deferred revenue, noncurrent     $ 5,088     7,867
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      
Issuance of common stock for investment in Sirius XM Canada     $ 178,850      
Number of preferred shares owned (in shares) | shares     590,950      
Preferred stock liquidation preference per share (in dollars per share) | CAD / shares       CAD 1    
Notes receivable, related parties     $ 140,073      
Equity method investments     $ 341,214     $ 8,615