Annual report pursuant to Section 13 and 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
 11 Months Ended 12 Months Ended
Nov. 19, 2009
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Share of earnings (losses) of affiliates, net (note 8) $ 386 $ 49 $ (64) $ (44)
Other [Member]
        
Share of earnings (losses) of affiliates, net (note 8)   15 (23) (16)
SIRIUS XM [Member]
        
Share of earnings (losses) of affiliates, net (note 8)   68 (41) (28)
Live Nation [Member]
        
Share of earnings (losses) of affiliates, net (note 8)   $ (34) [1] $ 0 [1] $ 0
[1] During June 2011, Liberty acquired an additional 5.5 million shares of Live Nation which increased our ownership percentage above 20% of the outstanding voting shares. Due to the presumption that an entity with an ownership percentage greater than 20% has significant influence absent other factors to rebut that presumption, the Company is accounting for the investment as an equity method affiliate. The Company has elected to record its share of earnings (loss) for Live Nation on a three-month lag due to timeliness considerations. Increases in ownership which result in a change to the equity method of accounting generally require retroactive recognition of an investment's share of earnings (loss) in prior periods. Due to the relative insignificance of our share of losses for Live Nation in previous periods, both quantitatively and qualitatively, the Company has recorded such amounts in the current year. Approximately $12 million of the losses recorded for the year ended December 31, 2011 relate to the prior year.