Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Details)

v2.4.1.9
Fair Value Measurements (Details)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2014
Level 2 [Member]
USD ($)
Dec. 31, 2013
Level 2 [Member]
USD ($)
Dec. 31, 2014
Sirius XM Canada [Member]
USD ($)
Dec. 31, 2013
Sirius XM Canada [Member]
USD ($)
Dec. 31, 2014
Sirius XM Canada [Member]
Fair Value, Inputs, Level 1 [Member]
USD ($)
Dec. 31, 2013
Sirius XM Canada [Member]
Fair Value, Inputs, Level 1 [Member]
USD ($)
Dec. 31, 2014
Sirius XM Canada [Member]
Fair Value, Inputs, Level 3 [Member]
USD ($)
Dec. 31, 2013
Sirius XM Canada [Member]
Fair Value, Inputs, Level 3 [Member]
USD ($)
Dec. 31, 2014
Related Party Current Liabilities [Member]
Liberty Media [Member]
USD ($)
Dec. 31, 2013
Related Party Current Liabilities [Member]
Liberty Media [Member]
USD ($)
Dec. 31, 2014
Related Party Current Liabilities [Member]
Liberty Media [Member]
Level 2 [Member]
USD ($)
Dec. 31, 2013
Related Party Current Liabilities [Member]
Liberty Media [Member]
Level 2 [Member]
USD ($)
Dec. 31, 2013
8% Convertible Unsecured Subordinated Debentures [Member]
Sirius XM Canada [Member]
CAD
Assets:                              
Investment balance, fair value         $ 246,500,000us-gaap_EquityMethodInvestmentsFairValueDisclosure
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		[1] $ 432,200,000us-gaap_EquityMethodInvestmentsFairValueDisclosure
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		[1] $ 246,500,000us-gaap_EquityMethodInvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		[1] $ 432,200,000us-gaap_EquityMethodInvestmentsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		[1]              
Fair value of host contract of debenture         0siri_FairValueofHostContractCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		[2] 3,641,000siri_FairValueofHostContractCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		[2]     0siri_FairValueofHostContractCurrent
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		[2] 3,641,000siri_FairValueofHostContractCurrent
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		[2]          
Fair value of embedded derivative of debenture         0siri_FairValueofEmbeddedDerivativeRelatedtoInvestmentinDebentureCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		[2] 57,000siri_FairValueofEmbeddedDerivativeRelatedtoInvestmentinDebentureCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		[2]     0siri_FairValueofEmbeddedDerivativeRelatedtoInvestmentinDebentureCurrent
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		[2] 57,000siri_FairValueofEmbeddedDerivativeRelatedtoInvestmentinDebentureCurrent
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		[2]          
Liabilities:                              
Debt, fair value 4,613,044,000us-gaap_DebtInstrumentFairValue [3] 4,066,755,000us-gaap_DebtInstrumentFairValue [3] 4,613,044,000us-gaap_DebtInstrumentFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member 		[3] 4,066,755,000us-gaap_DebtInstrumentFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member 		[3]                      
Derivatives asset (liability), fair value                     0us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= siri_RelatedPartyCurrentLiabilitiesMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_LibertyMediaMember 		[4] 15,702,000us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= siri_RelatedPartyCurrentLiabilitiesMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_LibertyMediaMember 		[4] 0us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= siri_RelatedPartyCurrentLiabilitiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_LibertyMediaMember 		[4] 15,702,000us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_BalanceSheetLocationAxis
= siri_RelatedPartyCurrentLiabilitiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_LibertyMediaMember 		[4]  
Investment balance, carrying value         2,654,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		26,972,000us-gaap_EquityMethodInvestments
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember 		                 
Investment in related party debt                             4,000,000siri_RelatedPartyTransactionInvestmentinRelatedPartyDebt
/ us-gaap_LongtermDebtTypeAxis
= siri_EightPercentConvertibleUnsecuredSubordinatedDebenturesMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember
Interest rate on instrument                             8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= siri_EightPercentConvertibleUnsecuredSubordinatedDebenturesMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_SiriusXmCanadaMember
[1] This amount approximates fair value. The carrying value of our investment in Sirius XM Canada was $2,654 and $26,972 as of December 31, 2014 and 2013, respectively.
[2] As of December 31, 2013, we held an investment in CAD $4,000 face value of 8% convertible unsecured subordinated debentures issued by Sirius XM Canada for which the embedded conversion feature was bifurcated from the host contract. Sirius XM Canada redeemed and converted the debentures during the year ended December 31, 2014.
[3] The fair value for non-publicly traded instruments is based upon estimates from a market maker and brokerage firm. Refer to Note 14 for information related to the carrying value of our debt as of December 31, 2014 and December 31, 2013.
[4] The final installment under the share repurchase agreement with Liberty Media was settled on April 25, 2014. The fair value of the derivative associated with the share repurchase agreement was determined using observable inputs, including the U.S. spot LIBOR curve and other available market data and was recorded in our consolidated balance sheets in Related party current liabilities, with changes in fair value recorded to our statements of comprehensive income.