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, 2014
Dec. 31, 2013
Equity Method Investments and Operating Activities Segment [Line Items]    
Investments in affiliates, accounted for using the equity method $ 1,244 $ 1,237
Interactive Group
    
Equity Method Investments and Operating Activities Segment [Line Items]    
Investments in affiliates, accounted for using the equity method 362 343
Interactive Group | HSN, Inc.
    
Equity Method Investments and Operating Activities Segment [Line Items]    
Percentage ownership 38.00%  
Investments in affiliates, accounted for using the equity method 311 293
Interactive Group | Equity method investment, other
    
Equity Method Investments and Operating Activities Segment [Line Items]    
Investments in affiliates, accounted for using the equity method 51 50
Ventures Group
    
Equity Method Investments and Operating Activities Segment [Line Items]    
Investments in affiliates, accounted for using the equity method 882 894
Ventures Group | Expedia
    
Equity Method Investments and Operating Activities Segment [Line Items]    
Percentage ownership 18.00%  
Investments in affiliates, accounted for using the equity method 467 477
Ventures Group | Equity method investment, other
    
Equity Method Investments and Operating Activities Segment [Line Items]    
Investments in affiliates, accounted for using the equity method 415 417
Fair Value, Inputs, Level 1 [Member] | Interactive Group | HSN, Inc.
    
Equity Method Investments and Operating Activities Segment [Line Items]    
Equity Method Investment, Quoted Market Value 1,196  
Fair Value, Inputs, Level 1 [Member] | Ventures Group | Expedia
    
Equity Method Investments and Operating Activities Segment [Line Items]    
Equity Method Investment, Quoted Market Value $ 1,673