Quarterly report pursuant to Section 13 or 15(d)

Investments In Affiliates Accounted For Using The Equity Method (Schedule Of Liberty's Share Of Earnings (Losses) Of Affiliates) (Details)

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Investments In Affiliates Accounted For Using The Equity Method (Schedule Of Liberty's Share Of Earnings (Losses) Of Affiliates) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Equity Method Investments and Operating Activities Segment [Line Items]        
Share of earnings (losses) of affiliates, net $ (12) $ (21) $ (47) $ (4)
Charter Communications
       
Equity Method Investments and Operating Activities Segment [Line Items]        
Share of earnings (losses) of affiliates, net (25) [1] (37) [1] (53) [1] (37) [1]
SIRIUS XM
       
Equity Method Investments and Operating Activities Segment [Line Items]        
Share of earnings (losses) of affiliates, net 0 0 0 8
Live Nation
       
Equity Method Investments and Operating Activities Segment [Line Items]        
Share of earnings (losses) of affiliates, net 11 11 (3) (8)
Sirius XM Canada
       
Equity Method Investments and Operating Activities Segment [Line Items]        
Share of earnings (losses) of affiliates, net 0 0 1 1
Equity method investment, other
       
Equity Method Investments and Operating Activities Segment [Line Items]        
Share of earnings (losses) of affiliates, net $ 2 $ 5 $ 8 $ 32
[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.