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Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Commitments and Contingencies (Textual) [Abstract] |  |  |
Lease expiration date | Jun. 01, 2023 |  |
Leased location | 21 |  |
Expedia [Member] |  |  |
Commitments and Contingencies (Additional Textual) [Abstract] |  |  |
Calculation of obligation of OIBA | 2.00% |  |
Subsequent calculation of obligation of Adjusted EBITDA | 2.00% |  |
Maximum [Member] |  |  |
Commitments and Contingencies (Additional Textual) [Abstract] |  |  |
Criteria percentage of damages claims | 10.00% |  |
Newton, Massachusetts [Member] |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |
Leased area | 119,000 |  |
Lease expiration date | Apr. 01, 2015 |  |
North America and Europe and Asia Pacific [Member] |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |
Leased area | 144,000 |  |
Lease expiration date | Jun. 01, 2023 |  |
Purchase Commitment [Member] |  |  |
Commitments and Contingencies (Textual) [Abstract] |  |  |
Rental expense | $ 7.8 | $ 6.0 | $ 6.0

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- Details
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Namespace Prefix: | trip_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | trip_CommitmentsAndContingenciesTextualAbstract
Namespace Prefix: | trip_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Damages expressed as a percentage of total current assets in determining requirement for disclosure. + References No definition available. + Details
Name: | trip_CriteriaPercentageOfDamagesClaims
Namespace Prefix: | trip_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Leased area. + References No definition available. + Details
Name: | trip_LeasedArea
Namespace Prefix: | trip_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of location under lease. + References No definition available. + Details
Name: | trip_NumberOfLocationUnderLease
Namespace Prefix: | trip_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of adjusted earnings before interest taxes depreciation amortization for obligation for year one and thereafter. + References No definition available. + Details
Name: | trip_PercentageOfAdjustedEarningsBeforeInterestTaxesDepreciationAmortizationForObligationForYearOneAndThereafter
Namespace Prefix: | trip_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of operating income before amortization for obligation. + References No definition available. + Details
Name: | trip_PercentageOfOperatingIncomeBeforeAmortizationForObligation
Namespace Prefix: | trip_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Date which lease or group of leases is set to expire, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_LeaseExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration