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Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	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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Data Type:	xbrli:stringItemType
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X

- Details

Name:	trip_CommitmentsAndContingenciesTextualAbstract
Namespace Prefix:	trip_
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X

- 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

X

- 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

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Namespace Prefix:	trip_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- 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

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- 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

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- 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