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Quarterly Financial Information (Unaudited) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Summary of selected unaudited financial information                      
Revenue $ 169,393 $ 212,710 $ 197,148 $ 183,715 $ 137,798 $ 180,801 $ 169,242 $ 149,222      
Operating income 46,992 92,249 83,678 73,377 33,556 82,068 83,819 73,314 296,296 272,757 226,300
Net income 33,717 59,535 53,165 48,171 22,017 54,293 54,110 47,371 194,588 177,791 138,954
Net income attributable to TripAdvisor, Inc. $ 33,579 $ 59,360 $ 53,019 $ 48,111 $ 22,021 $ 54,314 $ 54,064 $ 47,278 $ 194,069 $ 177,677 $ 138,776
Basic $ 0.24 $ 0.42 $ 0.38 $ 0.36 $ 0.16 $ 0.41 $ 0.41 $ 0.35 $ 1.39 $ 1.33 $ 1.04
Diluted $ 0.23 $ 0.41 $ 0.37 $ 0.35 $ 0.16 $ 0.41 $ 0.41 $ 0.35 $ 1.37 $ 1.32 $ 1.04