Investments In Affiliates Accounted For Using The Equity Method (Schedule Of Equity Ownership And Carrying Amount) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |||||||||||||||||||||||
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Sep. 30, 2013
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Dec. 31, 2012
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Dec. 31, 2012
SIRIUS XM [Member]
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Sep. 30, 2013
Charter Communications [Member]
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May 01, 2013
Charter Communications [Member]
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Mar. 31, 2013
Live Nation [Member]
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Sep. 30, 2013
Live Nation [Member]
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Dec. 31, 2012
Live Nation [Member]
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Sep. 30, 2013
Sirius XM Canada [Member]
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Sep. 30, 2013
Equity method investment, other [Member]
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Dec. 31, 2012
Equity method investment, other [Member]
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Payments to Acquire Equity Method Investments | $ 19 | |||||||||||||||||||||||
Percentage ownership | 26.00% | [1] | 27.00% | 26.00% | [2] | 38.00% | [3] | |||||||||||||||||
Investments in affiliates, accounted for using the equity method | 3,363 | 3,341 | 2,766 | [3] | 2,440 | [3] | 431 | [2] | 406 | [2] | 274 | [3] | 218 | 169 | ||||||||||
Equity Method Investment, Quoted Market Value | $ 3,619 | [4] | $ 966 | [4] | $ 385 | |||||||||||||||||||
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