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
Mar. 31, 2012
Mar. 31, 2011
Share of earnings of affiliates, net (note 7) $ 11 $ 20
Expedia [Member]
   
Share of earnings of affiliates, net (note 7) (2) 13
TripAdvisor, Inc. [Member]
   
Share of earnings of affiliates, net (note 7) 11 0
HSN, Inc. [Member]
   
Share of earnings of affiliates, net (note 7) 15 13
Other [Member]
   
Share of earnings of affiliates, net (note 7) $ (13) $ (6)