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Related Party Transactions - Additional Information 2 (Details) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 0 Months Ended | |||
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Mar. 31, 2015
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Mar. 31, 2014
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Apr. 25, 2014
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Dec. 31, 2014
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Oct. 09, 2013
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| Related Party Transaction [Line Items] | |||||
| Stock repurchased during period, value | $ 534,040,000siri_TreasuryStockValueAcquiredCostMethodIncludingAcceleratedStockRepurchaseProgram | $ 128,682,000siri_TreasuryStockValueAcquiredCostMethodIncludingAcceleratedStockRepurchaseProgram | |||
| Loss on change in value of derivatives | 0us-gaap_GainLossOnDerivativeInstrumentsNetPretax | 27,023,000us-gaap_GainLossOnDerivativeInstrumentsNetPretax | |||
| Interest expense associated with debt | 69,908,000us-gaap_InterestExpense | 54,092,000us-gaap_InterestExpense | |||
| Current portion of deferred revenue | 1,668,484,000us-gaap_DeferredRevenueCurrent | 1,632,381,000us-gaap_DeferredRevenueCurrent | |||
| Deferred revenue, Noncurrent | 156,102,000us-gaap_DeferredRevenueNoncurrent | 151,901,000us-gaap_DeferredRevenueNoncurrent | |||
| Common Stock [Member] | |||||
| Related Party Transaction [Line Items] | |||||
| Stock repurchased during period, value |
0siri_TreasuryStockValueAcquiredCostMethodIncludingAcceleratedStockRepurchaseProgram / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
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| Liberty Media [Member] | |||||
| Related Party Transaction [Line Items] | |||||
| Loss on change in value of derivatives |
27,023,000us-gaap_GainLossOnDerivativeInstrumentsNetPretax / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_LibertyMediaMember |
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| Liberty Media [Member] | 7% Exchangeable Senior Subordinated Notes due 2014 [Member] | |||||
| Related Party Transaction [Line Items] | |||||
| Interest expense associated with debt |
277,000us-gaap_InterestExpense / us-gaap_LongtermDebtTypeAxis = siri_SevenPercentExchangeableSeniorSubordinatedNotesDueTwoThousandFourteenMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_LibertyMediaMember |
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| Liberty Media [Member] | Common Stock [Member] | October 2013 Share Repurchase Program [Member] | |||||
| Related Party Transaction [Line Items] | |||||
| Stock repurchase program, authorized amount |
500,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1 / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_LibertyMediaMember / us-gaap_ShareRepurchaseProgramAxis = siri_October2013ShareRepurchaseProgramMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
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| Stock repurchased during period, value |
340,000,000siri_TreasuryStockValueAcquiredCostMethodIncludingAcceleratedStockRepurchaseProgram / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_LibertyMediaMember / us-gaap_ShareRepurchaseProgramAxis = siri_October2013ShareRepurchaseProgramMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
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| Share price (in dollars per share) |
$ 3.66us-gaap_TreasuryStockAcquiredAverageCostPerShare / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_LibertyMediaMember / us-gaap_ShareRepurchaseProgramAxis = siri_October2013ShareRepurchaseProgramMember / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |
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| Sirius XM Canada [Member] | |||||
| Related Party Transaction [Line Items] | |||||
| Equity method investment, ownership percentage |
36.90%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_SiriusXmCanadaMember |
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| Equity Method Investment, Voting Interest |
24.90%siri_EquityMethodInvestmentVotingInterest / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_SiriusXmCanadaMember |
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| Current portion of deferred revenue |
2,776,000us-gaap_DeferredRevenueCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_SiriusXmCanadaMember |
2,776,000us-gaap_DeferredRevenueCurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_SiriusXmCanadaMember |
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| Deferred revenue, Noncurrent |
12,721,000us-gaap_DeferredRevenueNoncurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_SiriusXmCanadaMember |
13,415,000us-gaap_DeferredRevenueNoncurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_SiriusXmCanadaMember |
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| Off balance sheet equity method loss |
6,946,000siri_OffBalanceSheetEquityMethodLoss / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_SiriusXmCanadaMember |
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| Investment balance |
$ 0us-gaap_EquityMethodInvestments / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_SiriusXmCanadaMember |
$ 2,654,000us-gaap_EquityMethodInvestments / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_SiriusXmCanadaMember |
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| Sirius XM Canada [Member] | Related Party Class A Stock [Member] | |||||
| Related Party Transaction [Line Items] | |||||
| Sirius XM Canada Class A shares owned on a converted basis (in shares) |
47.3siri_EquityMethodInvestmentNumberOfShares / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = siri_SiriusXmCanadaMember / us-gaap_StatementClassOfStockAxis = siri_RelatedPartyClassAStockMember |
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| X | ||||||||||
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- Definition
Equity method investment number of shares on an as converted basis. No definition available.
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- Definition
Equity method investment voting interest. No definition available.
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- Definition
Off balance sheet equity method loss. No definition available.
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| X | ||||||||||
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- Definition
Treasury stock value acquired cost method including accelerated stock repurchase program. No definition available.
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| X | ||||||||||
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- Definition
The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The noncurrent portion of deferred revenue amount as of balance sheet date. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized, and is not expected to be recognized in the next twelve months. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the cost of borrowed funds accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Amount of stock repurchase plan authorized. No definition available.
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- Definition
Total cost of shares repurchased divided by the total number of shares repurchased. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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