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
Mar. 31, 2013
Goodwill [Roll Forward]  
Balance, beginning of the year $ 9,556
Foreign currency translation adjustments (58)
Goodwill, Acquired During Period 8
Balance, ending of the year 9,506
QVC [Member]
  
Goodwill [Roll Forward]  
Balance, beginning of the year 5,349
Foreign currency translation adjustments (55)
Goodwill, Acquired During Period 0
Balance, ending of the year 5,294
E-commerce [Member]
  
Goodwill [Roll Forward]  
Balance, beginning of the year 558
Foreign currency translation adjustments 0
Goodwill, Acquired During Period 0
Balance, ending of the year 558
TripAdvisor, Inc. [Member]
  
Goodwill, Allocation Adjustment 8
Goodwill [Roll Forward]  
Balance, beginning of the year 3,649
Foreign currency translation adjustments (3)
Goodwill, Acquired During Period 8 [1]
Balance, ending of the year $ 3,654
[1] (1) The $8 million increase to TripAdvisor goodwill during the period is primarily attributable to certain purchase price allocation adjustments recorded in connection with our acquisition of a controlling interest in TripAdvisor during December 2012 and an increase due to an acquisition made by TripAdvisor during the three months ended March 31, 2013.