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Significant Accounting Policies (Details Textual) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2012
Segment
Customers
Dec. 31, 2011
Customers
Dec. 31, 2010
Dec. 31, 2012
Class B common stock [Member]
Dec. 31, 2011
Class B common stock [Member]
Dec. 21, 2011
Class B common stock [Member]
Dec. 20, 2011
Class B common stock [Member]
Dec. 31, 2012
Common Stock [Member]
Dec. 20, 2011
Common Stock [Member]
Dec. 31, 2012
Expedia [Member]
Dec. 31, 2011
Expedia [Member]
Dec. 31, 2010
Expedia [Member]
Dec. 31, 2012
Other Major Customer [Member]
Dec. 31, 2011
Other Major Customer [Member]
Dec. 31, 2010
Other Major Customer [Member]
Dec. 31, 2012
Stock Options [Member]
Dec. 31, 2012
Restricted Stock Units (RSU) [Member]
Dec. 31, 2012
Maximum [Member]
Dec. 31, 2012
Minimum [Member]
Significant Accounting Policies (Textual) [Abstract]                                      
Depreciation over the estimated useful lives of the assets                                   P5Y P3Y
Amortized estimated useful lives of Intangible assets                                   10 years 2 years
Stock options vest period                               4 years 5 years    
Expected dividend yield on common stock                0.00%                      
Related party accounted for revenue, amount                   27.00% 33.00% 35.00% 21.00% 16.00% 11.00%        
Common stock, shares outstanding       12,799,999 12,799,999 12,799,999 12,799,999   120,661,020                    
Significant Accounting Policies (Additional Textual) [Abstract]                                      
Marketable debt securities with maturity 90 days                                    
Weighted average maturity of total invested cash 12 months                                    
Final maturity of marketable securities 3 years                                    
Accounts receivable due period 30 days                                    
Number of reportable segment 1                                    
Minimum probability that the fair value of the reporting unit is less than the carrying amount 50.00%                                    
Foreign exchange losses $ 3.2 $ 1.0 $ 1.6                                
Advertising expense $ 175.0 $ 135.6 $ 86.3                                
Number of customers accounting for more than 10% of gross trade receivables 0 0                                  
Spin-Off reserve stock split of outstanding 0.5                                    
Stock options granted, period 10 years                                    
TripAdvisor equity awards outstanding prior to Spin-Off     0                                
Performance based options, bearing right to acquire common stock 110,000                                    
Restricted stock units, bearing right to acquire common stock 200,000 400,000