Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Textual)

v2.4.0.8
Summary of Significant Accounting Policies (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Accumulated other comprehensive loss, net of tax $ 1,173,415   $ 1,173,415   $ 2,745,742
Foreign currency translation adjustment (loss), net of tax (58) (11) 20 (292)  
Sirius XM Canada [Member] | 8% Convertible Unsecured Subordinated Debentures [Member]
         
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Interest rate on instrument         8.00%
Accumulated Other Comprehensive Income (Loss) [Member]
         
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Accumulated other comprehensive loss, net of tax (288)   (288)   (308)
Accumulated Translation Adjustment [Member]
         
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Reclassification adjustment for foreign currency translation out of accumulated other comprehensive income(loss)     $ 223