Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Changes In The Carrying Amount Of Goodwill) (Details)

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Intangible Assets (Changes In The Carrying Amount Of Goodwill) (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Amortization of Intangible Assets $ 201 $ 114 $ 589 $ 331
Goodwill [Roll Forward]        
Balance, beginning of the year     9,556  
Foreign currency translation adjustments     (29)  
Goodwill, Acquired During Period     26  
Balance, ending of the year 9,553   9,553  
QVC [Member]
        
Goodwill [Roll Forward]        
Balance, beginning of the year     5,349  
Foreign currency translation adjustments     (29)  
Goodwill, Acquired During Period     0  
Balance, ending of the year 5,320   5,320  
E-commerce [Member]
        
Goodwill [Roll Forward]        
Balance, beginning of the year     558  
Foreign currency translation adjustments     0  
Goodwill, Acquired During Period     (10)  
Balance, ending of the year 548   548  
TripAdvisor, Inc. [Member]
        
Goodwill, Allocation Adjustment     36  
Goodwill [Roll Forward]        
Balance, beginning of the year     3,649  
Foreign currency translation adjustments     0  
Goodwill, Acquired During Period     36 [1]  
Balance, ending of the year $ 3,685   $ 3,685  
[1] (1) The $36 million increase to TripAdvisor goodwill during the period is primarily attributable to certain acquisitions made by TripAdvisor during the nine months ended September 30, 2013 and to a lesser extent certain purchase price allocation adjustments recorded in connection with our acquisition of a controlling interest in TripAdvisor during December 2012.