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Business & Basis of Presentation (Details)
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3 Months Ended |
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Mar. 31, 2013
Line
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| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
| Number of satellite radio systems | 2 |
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Minimum [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |
| Length of prepaid subscriptions, term | 3 months |
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Maximum [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |
| Length of prepaid subscriptions, term | 12 months |
| X | ||||||||||
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- Definition
Length of Prepaid Subscriptions, Term No definition available.
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| X | ||||||||||
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- Definition
Number of Satellite radio systems. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Details
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