Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Details Textual 3)

v2.4.1.9
Related Party Transactions (Details Textual 3) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Related Party Transaction [Line Items]      
Amortization related to equity method intangible assets $ 55,016us-gaap_AmortizationOfIntangibleAssets $ 50,011us-gaap_AmortizationOfIntangibleAssets $ 53,620us-gaap_AmortizationOfIntangibleAssets
Sirius XM Canada [Member]      
Related Party Transaction [Line Items]      
Gain on conversion of debt 1,251siri_RelatedPartyTransactionGainonConversionofDebtInvestment
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		   
Amortization related to equity method intangible assets $ 363us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		$ 1,454us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		$ 974us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember
8% Convertible Unsecured Subordinated Debentures [Member] | Sirius XM Canada [Member]      
Related Party Transaction [Line Items]      
Interest rate on instrument   8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= siri_EightPercentConvertibleUnsecuredSubordinatedDebenturesMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember