Investments In Affiliates Accounted For Using The Equity Method (Schedule Of Equity Ownership And Carrying Amount) (Details) (USD $)
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1 Months Ended | 12 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | ||||||||||||||||||||
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Dec. 31, 2013
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Dec. 31, 2012
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May 01, 2013
Charter Communications [Member]
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Dec. 31, 2013
Charter Communications [Member]
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Dec. 31, 2013
Other [Member]
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Dec. 31, 2012
Other [Member]
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Jan. 18, 2013
SIRIUS XM [Member]
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Dec. 31, 2012
SIRIUS XM [Member]
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Mar. 31, 2013
Live Nation [Member]
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Dec. 31, 2012
Live Nation [Member]
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Dec. 31, 2013
Live Nation [Member]
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Dec. 31, 2013
Sirius XM Canada [Member]
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Equity Method Investment, Aggregate Cost | $ 2,600,000,000 | ||||||||||||||||||||||||
excess amortization in share of earnings (loss) | 51,000,000 | ||||||||||||||||||||||||
Percentage ownership | 27.00% | 25.00% | [1],[2] | 26.00% | [1],[3] | 38.00% | [4] | ||||||||||||||||||
Investments in affiliates, accounted for using the equity method | 3,299,000,000 | 3,341,000,000 | 2,395,000,000 | [1],[2] | 222,000,000 | 169,000,000 | 2,766,000,000 | [4] | 406,000,000 | [3] | 409,000,000 | [1],[3] | 273,000,000 | [4] | |||||||||||
Equity Method Investment, Quoted Market Value | 3,673,000,000 | [1],[2] | 1,029,000,000 | [1],[3] | 432,000,000 | [4] | |||||||||||||||||||
Purchase of shares in equity method investee | 26,900,000 | 50,000,000 | 1,700,000 | 11,000,000 | |||||||||||||||||||||
Payments to Acquire Equity Method Investments | $ 19,000,000 | $ 107,000,000 | |||||||||||||||||||||||
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