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Basis Of Presentation (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended |
|---|---|---|---|---|
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Dec. 31, 2011
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Dec. 31, 2012
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Jan. 18, 2013
SIRIUS XM [Member]
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Dec. 31, 2012
SIRIUS XM [Member]
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| Related Party Costs | $ 2 | $ 10 | ||
| Purchase of shares in equity method investee | 50,000,000 | 312,500,000 | ||
| Preferred Stock, Par or Stated Value Per Share | $ 0.00 | $ 0.01 | $ 0.001 | |
| Convertible Preferred Stock, Shares Issued upon Conversion | 1,293,509,076 |
| X | ||||||||||
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- Definition
Numbe of shares purchased in equity method investee No definition available.
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| X | ||||||||||
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- Definition
Number of shares issued for each share of convertible preferred stock that is converted. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Face amount or stated value per share of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value per share. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Direct costs arising from transactions with related parties who are not affiliates or joint Ventures. These costs are categorized as cost of goods sold. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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