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 $)
 6 Months Ended 1 Months Ended 3 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
May 01, 2013
Charter Communications
Jun. 30, 2014
Charter Communications
Jun. 30, 2013
Charter Communications
Jun. 30, 2014
Live Nation
Jun. 30, 2014
Sirius XM Canada
Jun. 30, 2013
Sirius XM Canada
Jun. 30, 2014
Sirius XM Canada
Jun. 30, 2013
Sirius XM Canada
Jun. 30, 2014
Charter Communications
Jun. 30, 2013
Charter Communications
Jun. 30, 2014
Charter Communications
Jun. 30, 2013
Charter Communications
May 01, 2013
Charter Communications
Jun. 30, 2014
SIRIUS XM
Jun. 30, 2014
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                      
Warrants acquired     1,100,000                            
Percentage ownership     27.00% 26.00% [1]   27.00% [2],[3] 37.00%   37.00%                
Price-per-share     $ 95.50                            
Difference between carrying amount and underlying equity                     2,400,000,000   2,400,000,000   2,500,000,000    
Gain (loss) on dilution of investment in affiliate 54,000,000 3,000,000                 4,000,000 3,000,000 50,000,000 3,000,000      
Due from Related Parties                               5,000,000 5,000,000
Due to Related Parties                               20,000,000 20,000,000
Revenue from Related Parties                               12,000,000 24,000,000
Dividends             $ 30,000,000 $ 4,000,000 $ 34,000,000 $ 7,000,000              
[1] As discussed below, Liberty acquired its interest in Charter during the three months ended June 30, 2013 for approximately $2.6 billion. Additionally, during the three months ended June 30, 2014 Liberty acquired 896,845 shares of Charter for $124 million.
[2] See note 8 for details regarding the number and fair value of shares pledged as collateral pursuant to certain margin loan agreements as of June 30, 2014.
[3] During the three months ended June 30, 2014, Liberty acquired approximately 1.7 million shares of Live Nation for approximately $39 million.