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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
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Investments in affiliates, accounted for using the equity method $ 883 Ìý $ 883 Ìý $ 851
Gains (losses) on dispositions, net (2) 288 (2) 288 Ìý
Interactive Group [Member]
 Ìý Ìý Ìý Ìý Ìý
Investments in affiliates, accounted for using the equity method 322 Ìý 322 Ìý 304
Gains (losses) on dispositions, net Ìý 0 (1) 0 Ìý
Interactive Group [Member] | HSN, Inc. [Member]
 Ìý Ìý Ìý Ìý Ìý
Percentage ownership 37.00% Ìý 37.00% Ìý Ìý
Investments in affiliates, accounted for using the equity method 270 Ìý 270 Ìý 242
Equity Method Investment, Quoted Market Value 1,075 Ìý 1,075 Ìý Ìý
Interactive Group [Member] | Equity method investment, other [Member]
 Ìý Ìý Ìý Ìý Ìý
Investments in affiliates, accounted for using the equity method 52 Ìý 52 Ìý 62
Ventures Group [Member]
 Ìý Ìý Ìý Ìý Ìý
Investments in affiliates, accounted for using the equity method 561 Ìý 561 Ìý 547
Gains (losses) on dispositions, net Ìý 288 (1) 288 Ìý
Ventures Group [Member] | Expedia [Member]
 Ìý Ìý Ìý Ìý Ìý
Percentage ownership 17.00% Ìý 17.00% Ìý Ìý
Investments in affiliates, accounted for using the equity method 438 [1] Ìý 438 [1] Ìý 431 [1]
Equity Method Investment, Quoted Market Value 1,388 Ìý 1,388 Ìý Ìý
Ventures Group [Member] | Equity method investment, other [Member]
 Ìý Ìý Ìý Ìý Ìý
Investments in affiliates, accounted for using the equity method 123 Ìý 123 Ìý 116
TripAdvisor, Inc. [Member]
 Ìý Ìý Ìý Ìý Ìý
Ownership Interest In Investee 22.00% Ìý 22.00% Ìý Ìý
Revenue from Related Parties 54 56 115 107 Ìý
TripAdvisor, Inc. [Member] | Ventures Group [Member]
 Ìý Ìý Ìý Ìý Ìý
Investments in affiliates, accounted for using the equity method $ 0 Ìý $ 0 Ìý Ìý
[1] Liberty's 22% owned consolidated subsidiary TripAdvisor, Inc. earned revenue of approximately $54 million and $115 million for the three and six months ended June 30, 2013, respectively, and $56 million and $107 million for the three and six months ended June 30, 2012, respectively, from Expedia, Inc. (TripAdvisor's former parent).