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 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Share of earnings (losses) of affiliates, net $ (8) $ 14 $ (12) $ 1,307
SIRIUS XM [Member]
        
Share of earnings (losses) of affiliates, net 0 [1] (5) 8 [1] 1,304
Charter Communications [Member]
        
Share of earnings (losses) of affiliates, net (37) [2] 0 (74) [1] 0
Live Nation [Member]
        
Share of earnings (losses) of affiliates, net 13 14 5 (2)
Sirius XM Canada [Member]
        
Share of earnings (losses) of affiliates, net 2 [1] 0 3 [1] 0
Equity method investment, other [Member]
        
Share of earnings (losses) of affiliates, net 14 5    
Other [Member]
        
Share of earnings (losses) of affiliates, net     $ 46 $ 5
[1] On January 18, 2013, as discussed in note 2, Liberty acquired an additional 50 million common shares and acquired a controlling interest in SIRIUS XM and as a result consolidates SIRIUS XM as of such date. SIRIUS XM has an investment in SIRIUS XM Canada that was recorded at fair value in purchase accounting. See discussion below of SIRIUS XM Canada.
[2] (a)As discussed below, Liberty acquired its interest in Charter Communications, Inc. during the three months ended June 30, 2013 for approximately $2.6 billion.