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
3 Months Ended 9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Share of earnings of affiliates, net (note 7) $ 62 $ 36 $ 119 $ 93
Expedia [Member]
       
Share of earnings of affiliates, net (note 7) 56 43 104 85
Other Securities [Member]
       
Share of earnings of affiliates, net (note 7) $ 6 $ (7) $ 15 $ 8