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Stockholders' Equity (Details Textual) (USD $) | 1 Months Ended | 12 Months Ended |  | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  | 1 Months Ended
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Dec. 31, 2011 | Dec. 31, 2012 Director | Dec. 31, 2011 | Dec. 21, 2011 | Dec. 31, 2011 Expedia [Member] | Dec. 31, 2011 Trip Advisor [Member] | Dec. 31, 2012 Common Stock [Member] | Dec. 31, 2011 Common Stock [Member] | Dec. 21, 2011 Common Stock [Member] | Dec. 31, 2012 Class B common stock [Member] Vote | Dec. 31, 2011 Class B common stock [Member] Vote | Dec. 21, 2011 Class B common stock [Member] | Dec. 20, 2011 Class B common stock [Member] | Dec. 31, 2011 Class B common stock [Member] Expedia [Member] | Dec. 31, 2011 Class B common stock [Member] Trip Advisor [Member]
Stockholders' Equity (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Authorized Class B common stock shares |  |  |  |  |  |  |  |  |  | 400,000,000 | 400,000,000 |  |  |  |
Common stock, shares authorized |  |  |  |  |  |  | 1,600,000,000 | 1,600,000,000 |  | 400,000,000 | 400,000,000 |  |  |  |
Common stock, par value |  |  |  |  |  |  | $ 0.001 | $ 0.001 |  | $ 0.001 | $ 0.001 |  |  |  |
Common Stock Class B par value per share |  |  |  |  |  |  |  |  |  | $ 0.001 | $ 0.001 |  |  |  |
Vote per common stock share |  |  |  |  |  |  | One |  |  |  |  |  |  |  |
Vote per common Class B stock share |  |  |  |  |  |  |  |  |  | 10 | 10 |  |  |  |
Spin-Off of shares |  | 2 |  |  | 1 |  |  |  |  |  |  |  |  |  |
Percentage of directors elected by common stock holders |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock shares outstanding prior to spin off |  |  |  |  |  |  | 130,030,138 | 120,661,808 | 120,661,020 | 12,799,999 | 12,799,999 | 12,799,999 | 12,799,999 |  |
Expedia common stock reclassified, shares |  |  |  |  | 120,661,020 |  |  |  |  |  |  |  |  | 12,799,999 |
TripAdvisor common stock for exchange, shares |  |  |  |  |  | 120,661,020 |  |  |  |  |  |  |  |  | 12,799,999
Stockholders Equity (Additional Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of directors |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of Class B common stock |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Common Stock Shares Authorized | 100,000,000 | 100,000,000 | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Preferred Common Stock Par value per share | $ 0.001 | $ 0.001 | $ 0.001 |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Issued | 0 | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend transferred to Expedia | $ 405,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash on hand retained after Spin-Off |  |  |  | 165,000,000 |  |  |  |  |  |  |  |  |  |  |
Amount remitted to Expedia | 165,000,000 |  | 165,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Additional receivable from Expedia | 7,000,000 |  | 7,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Unrealized tax benefits |  | $ 72 |  |  |  |  |  |  |  |  |  |  |  |  |

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