Annual report pursuant to Section 13 and 15(d)

Earnings per Share (Details Textual)

v2.4.1.9
Earnings per Share (Details Textual)
 12 Months Ended 1 Months Ended 0 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2014
Jan. 18, 2013
Jan. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Anti-dilutive common stock equivalents (in shares) 132,162,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 365,177,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 147,125,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount      
7% Exchangeable Senior Subordinated Notes due 2014 [Member]            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Conversion of Exchangeable Notes to common stock included in weighted average number of shares (in shares) 31,078,000siri_StockIssuedDuringPeriodSharesConversionofExchangeableNotesIncludedInComputationOfWeightedAverageNumberOfSharesOutstandingBasic
/ us-gaap_LongtermDebtTypeAxis
= siri_SevenPercentExchangeableSeniorSubordinatedNotesDueTwoThousandFourteenMember 		         
Conversion of Exchangeable Notes to common stock (in shares) 272,855,859siri_StockIssuedDuringPeriodSharesConversionOfExchangeableNotes
/ us-gaap_LongtermDebtTypeAxis
= siri_SevenPercentExchangeableSeniorSubordinatedNotesDueTwoThousandFourteenMember 		         
Interest rate on instrument 7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= siri_SevenPercentExchangeableSeniorSubordinatedNotesDueTwoThousandFourteenMember 		[1] 7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= siri_SevenPercentExchangeableSeniorSubordinatedNotesDueTwoThousandFourteenMember 		[1] 7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= siri_SevenPercentExchangeableSeniorSubordinatedNotesDueTwoThousandFourteenMember 		7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= siri_SevenPercentExchangeableSeniorSubordinatedNotesDueTwoThousandFourteenMember 		[1]    
Common Stock [Member]            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Conversion of preferred stock to common stock (in shares)   1,293,509,076us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember 		1,293,467,684us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember 		     
Conversion of Exchangeable Notes to common stock (in shares) 272,855,859siri_StockIssuedDuringPeriodSharesConversionOfExchangeableNotes
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember 		27,687,850siri_StockIssuedDuringPeriodSharesConversionOfExchangeableNotes
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember 		       
Liberty Media [Member] | 7% Exchangeable Senior Subordinated Notes due 2014 [Member]            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Conversion of Exchangeable Notes to common stock (in shares)       5,974,510siri_StockIssuedDuringPeriodSharesConversionOfExchangeableNotes
/ us-gaap_LongtermDebtTypeAxis
= siri_SevenPercentExchangeableSeniorSubordinatedNotesDueTwoThousandFourteenMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_LibertyMediaMember 		   
Interest rate on instrument 7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= siri_SevenPercentExchangeableSeniorSubordinatedNotesDueTwoThousandFourteenMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_LibertyMediaMember 		7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= siri_SevenPercentExchangeableSeniorSubordinatedNotesDueTwoThousandFourteenMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_LibertyMediaMember 		  7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= siri_SevenPercentExchangeableSeniorSubordinatedNotesDueTwoThousandFourteenMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_LibertyMediaMember 		   
Liberty Media [Member] | Common Stock [Member]            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Conversion of preferred stock to common stock (in shares)         1,293,509,076us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_LibertyMediaMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember 		1,293,509,076us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_LibertyMediaMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
Liberty Media [Member] | Series B Preferred Stock [Member]            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Conversion of preferred stock to common stock (in shares)         6,250,100us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= siri_LibertyMediaMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember 		 
[1] The carrying value of the notes are net of the remaining unamortized original issue discount.