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Income Taxes (Details Textual) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
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Dec. 31, 2013
|
Dec. 31, 2012
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| Related Party Transaction [Line Items] | |||
| Federal income tax provision, current | $ 0us-gaap_CurrentFederalTaxExpenseBenefit | $ 0us-gaap_CurrentFederalTaxExpenseBenefit | $ 0us-gaap_CurrentFederalTaxExpenseBenefit |
| Operating loss carryforwards, exclusive of excess share-based compensation deductions | 4,794,924siri_OperatingLossCarryforwardsExclusiveOfExcessShareBasedCompensationDeductions | ||
| Deferred tax assets, valuation allowance, excess share-based compensation deductions | 753,218siri_DeferredTaxAssetsExcessShareBasedCompensationDeductions | ||
| Operating loss carryforwards, per tax return | 5,548,142siri_OperatingLossCarryforwardsPerTaxReturn | ||
| Increase (decrease) in valuation allowance | (3,350,905)siri_ValuationAllowanceChangeInAmount | ||
| Valuation allowance | 4,995us-gaap_DeferredTaxAssetsValuationAllowance | 7,831us-gaap_DeferredTaxAssetsValuationAllowance | |
| Unrecognized tax benefits | 1,432us-gaap_UnrecognizedTaxBenefits | 1,432us-gaap_UnrecognizedTaxBenefits | 1,432us-gaap_UnrecognizedTaxBenefits |
| Unrecognized tax benefits, increase resulting from interest | $ 55us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense | $ 40us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense | |
| Common Stock [Member] | Liberty Media [Member] | |||
| Related Party Transaction [Line Items] | |||
| Related party ownership percentage (greater than 50%) |
50.00%siri_RelatedPartyTransactionRelatedPartyOwnershipPercentage / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_LibertyMediaMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
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| X | ||||||||||
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- Definition
Deferred Tax Assets, Excess Share Based Compensation Deductions No definition available.
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| X | ||||||||||
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- Definition
Operating Loss Carryforwards, Exclusive of Excess Share-based Compensation Deductions No definition available.
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| X | ||||||||||
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- Definition
Operating Loss Carryforwards, Per Tax Return No definition available.
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| X | ||||||||||
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- Definition
Related Party Transaction, Related Party Ownership Percentage No definition available.
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| X | ||||||||||
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- Definition
Valuation Allowance, Change in Amount No definition available.
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| X | ||||||||||
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- Definition
Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of interest expense for an underpayment of income taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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