Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

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Summary of Significant Accounting Policies (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Accounting Policies [Abstract]          
Carrying value of debt $ 3,249,777   $ 3,249,777   $ 2,435,220
Fair value approximated on debt 3,803,074   3,803,074   3,055,076
Related Party Transaction [Line Items]          
Accumulated other comprehensive (loss) income, net of tax (161)   (161)   120
Foreign currency translation adjustment (loss), net of tax (109) 18 (281) (38)  
Foreign currency translation adjustment, tax (benefit) (57)   (140)    
Sirius XM Canada [Member]
         
Related Party Transaction [Line Items]          
Investment balance, carrying value 31,852 [1]   31,852 [1]   37,983 [1]
Investment balance, fair value $ 310,300   $ 310,300   $ 290,900
[1] The investment balance includes equity method goodwill and intangible assets of $26,888 and $27,615 as of June 30, 2013 and December 31, 2012, respectively.