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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
Sep. 30, 2014
Dec. 31, 2013
Oct. 10, 2013
Equity Method Investments and Operating Activities Segment [Line Items] Ìý Ìý Ìý
Investments in affiliates, accounted for using the equity method $ 1,271 $ 1,237 Ìý
Interactive Group
 Ìý Ìý Ìý
Equity Method Investments and Operating Activities Segment [Line Items] Ìý Ìý Ìý
Investments in affiliates, accounted for using the equity method 372 343 Ìý
Interactive Group | HSN, Inc.
 Ìý Ìý Ìý
Equity Method Investments and Operating Activities Segment [Line Items] Ìý Ìý Ìý
Percentage ownership 38.00% Ìý 38.00%
Investments in affiliates, accounted for using the equity method 322 293 Ìý
Interactive Group | Equity method investment, other
 Ìý Ìý Ìý
Equity Method Investments and Operating Activities Segment [Line Items] Ìý Ìý Ìý
Investments in affiliates, accounted for using the equity method 50 50 Ìý
Ventures Group
 Ìý Ìý Ìý
Equity Method Investments and Operating Activities Segment [Line Items] Ìý Ìý Ìý
Investments in affiliates, accounted for using the equity method 899 894 Ìý
Ventures Group | Expedia
 Ìý Ìý Ìý
Equity Method Investments and Operating Activities Segment [Line Items] Ìý Ìý Ìý
Percentage ownership 18.00% Ìý Ìý
Investments in affiliates, accounted for using the equity method 501 477 Ìý
Ventures Group | Equity method investment, other
 Ìý Ìý Ìý
Equity Method Investments and Operating Activities Segment [Line Items] Ìý Ìý Ìý
Investments in affiliates, accounted for using the equity method 398 417 Ìý
Fair Value, Inputs, Level 1 [Member] | Interactive Group | HSN, Inc.
 Ìý Ìý Ìý
Equity Method Investments and Operating Activities Segment [Line Items] Ìý Ìý Ìý
Equity Method Investment, Quoted Market Value 1,228 Ìý Ìý
Fair Value, Inputs, Level 1 [Member] | Ventures Group | Expedia
 Ìý Ìý Ìý
Equity Method Investments and Operating Activities Segment [Line Items] Ìý Ìý Ìý
Equity Method Investment, Quoted Market Value $ 2,022 Ìý Ìý