Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation Basis of Presentation (Details)

v2.4.0.8
Basis of Presentation Basis of Presentation (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]      
Related Party Transaction, Amounts of Transaction $ 3 $ 4  
Long-term Debt 7,591   7,384
TripAdvisor, Inc.
     
Schedule of Equity Method Investments [Line Items]      
Ownership Interest In Investee 22.00%    
Business Acquisition, Percentage of Voting Interests Acquired 57.00%    
Interactive Group
     
Schedule of Equity Method Investments [Line Items]      
Long-term Debt 5,287   5,083
Interactive Group | HSN, Inc.
     
Schedule of Equity Method Investments [Line Items]      
Equity Method Investment, Ownership Percentage 38.00%    
Corporate and Other | Trip Holdings
     
Schedule of Equity Method Investments [Line Items]      
Long-term Debt $ 350