Stock Based Awards and Other Equity Instruments - Summary of Activity for MSUs (Parenthetical) (Details) - MSUs - Employee Stock Member	6 Months Ended
Jun. 30, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Percentage of originally granted shares that may be earned upon performance achievement, maximum	200.00%
Percentage of originally granted shares that may be earned upon performance achievement, minimum	0.00%
Stock awards vesting term	MSUs provide for vesting based upon the Company’s total shareholder return, or TSR, performance over the period commencing January 1, 2020 through December 31, 2022 relative to the TSR performance of The Nasdaq Composite Total Return Index
Performance measurement period start date	Jan. 01, 2020
Performance measurement period end date	Dec. 31, 2022

Percentage of originally granted shares that may be earned upon performance achievement, maximum.

No definition available.

Name:	trip_PercentageOfOriginallyGrantedSharesThatMayBeEarnedUponPerformanceAchievementMaximum
Namespace Prefix:	trip_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of originally granted shares that may be earned upon performance achievement, minimum.

+ References

No definition available.

+ Details

Name:	trip_PercentageOfOriginallyGrantedSharesThatMayBeEarnedUponPerformanceAchievementMinimum
Namespace Prefix:	trip_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Performance measurement period end date.

+ References

No definition available.

+ Details

Name:	trip_PerformanceMeasurementPeriodEndDate
Namespace Prefix:	trip_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Performance measurement period start date.

+ References

No definition available.

+ Details

Name:	trip_PerformanceMeasurementPeriodStartDate
Namespace Prefix:	trip_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_AwardTypeAxis=trip_MarketBasedRestrictedStockUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_EmployeeStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: