Quarterly report pursuant to Section 13 or 15(d)

Investments In Affiliates Accounted For Using The Equity Method (Details)

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Investments In Affiliates Accounted For Using The Equity Method (Details) - USD ($)
$ in Millions
Sep. 30, 2015
Dec. 31, 2014
May. 31, 2013
Schedule of Equity Method Investments [Line Items]      
Investments in affiliates, accounted for using the equity method $ 759 $ 851  
Charter Communications      
Schedule of Equity Method Investments [Line Items]      
Percentage ownership     27.00%
Live Nation      
Schedule of Equity Method Investments [Line Items]      
Percentage ownership 27.00%    
Equity Method Investment, Quoted Market Value $ 1,292    
Investments in affiliates, accounted for using the equity method $ 395 396  
Sirius XM Canada      
Schedule of Equity Method Investments [Line Items]      
Percentage ownership 37.00%    
Equity Method Investment, Quoted Market Value $ 174    
Investments in affiliates, accounted for using the equity method 160 237  
Equity method investment, other      
Schedule of Equity Method Investments [Line Items]      
Investments in affiliates, accounted for using the equity method $ 204 $ 218