Quarterly report pursuant to Section 13 or 15(d)

Investments In Affiliates Accounted For Using The Equity Method (Schedule Of Equity Ownership And Carrying Amount) (Details)

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Investments In Affiliates Accounted For Using The Equity Method (Schedule Of Equity Ownership And Carrying Amount) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Investments in affiliates, accounted for using the equity method (note 7) $ 550 $ 567
Segment, Liberty Capital [Member] | Other [Member]
   
Investments in affiliates, accounted for using the equity method (note 7) 121 126
Segment, Liberty Capital [Member] | SIRIUS XM [Member]
   
Percentage ownership 41.00%  
Investments in affiliates, accounted for using the equity method (note 7) 80 64
Equity Method Investment, Quoted Market Value 5,976  
Segment, Liberty Capital [Member] | Live Nation [Member]
   
Percentage ownership 21.00%  
Investments in affiliates, accounted for using the equity method (note 7) 349 377
Equity Method Investment, Quoted Market Value $ 368