Quarterly report pursuant to Section 13 or 15(d)

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

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Investments In Affiliates Accounted For Using The Equity Method (Narrative) (Details) (USD $)
9 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 0 Months Ended
Sep. 30, 2014
Sep. 30, 2013
May 31, 2013
Charter Communications
Sep. 30, 2014
Charter Communications
Sep. 30, 2014
Charter Communications
Sep. 30, 2014
SIRIUS XM
Sep. 30, 2014
SIRIUS XM
Sep. 30, 2014
Live Nation
Sep. 30, 2014
Sirius XM Canada
Sep. 30, 2013
Sirius XM Canada
Sep. 30, 2014
Sirius XM Canada
Sep. 30, 2013
Sirius XM Canada
Sep. 30, 2013
Charter Communications
Sep. 30, 2014
Charter Communications
Jan. 18, 2013
SIRIUS XM
Equity Method Investments and Operating Activities Segment [Line Items]                              
Aggregate cost     $ 2,600,000,000                        
Purchase of shares in equity method investee     26,900,000 896,845       1,700,000             50,000,000
Warrants acquired     1,100,000                        
Percentage ownership     27.00% 25.00% 25.00%     27.00% 37.00%   37.00%        
Price-per-share     $ 95.50                        
Difference between carrying amount and underlying equity     2,500,000,000 2,400,000,000 2,400,000,000                    
Losses (gains) on dilution of investment in affiliate 67,000,000 55,000,000   11,000,000 61,000,000               55,000,000 55,000,000  
Due from Related Parties           6,000,000 6,000,000                
Due to Related Parties           18,000,000 18,000,000                
Revenue from Related Parties           12,000,000 36,000,000                
Dividends                 $ 5,000,000 $ 5,000,000 $ 39,000,000 $ 12,000,000