Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Schedule of Related Party Revenue and Investment Income (Parenthetical) (Details)

v2.4.1.9
Related Party Transactions - Schedule of Related Party Revenue and Investment Income (Parenthetical) (Details) (Sirius XM Canada [Member], USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Sirius XM Canada [Member]
    
Related Party Transaction [Line Items]    
Amortization related to equity method intangible assets $ 0siri_AmortizationOfIntangibleAssetsEquityMethodInvestment
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		$ 363siri_AmortizationOfIntangibleAssetsEquityMethodInvestment
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember
Dividend received from unconsolidated entity investment $ 3,977siri_ProceedsFromEquityMethodInvestmentDividends
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		$ 4,445siri_ProceedsFromEquityMethodInvestmentDividends
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember