Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions (Details Textual 1)

v2.4.0.8
Related Party Transactions (Details Textual 1) (USD $)
9 Months Ended
Sep. 30, 2014
Liberty Media [Member]
Executives [Member]
director
Sep. 30, 2014
Liberty Media [Member]
Director [Member]
director
Sep. 30, 2014
Liberty Media [Member]
Common Stock [Member]
Sep. 30, 2014
Sirius XM Canada [Member]
Dec. 31, 2013
Sirius XM Canada [Member]
Sep. 30, 2014
M-Way Solutions GmbH [Member]
Related Party Transaction [Line Items]            
Related party ownership percentage (greater than 50%)     50.00%      
Number of Related Party Members on the Board of Directors 2 1        
Sirius XM Canada shares owned (in shares)       47,300,000    
Equity method investment, ownership percentage       37.00%    
Voting interest       25.00%    
Investment balance, carrying value       $ 1,292,000 $ 26,972,000 $ 0
Loss recognized for other than temporary decline in fair value of investments           $ 2,342,000