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Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2011	Dec. 08, 2011
Document and Entity Information [Abstract]
Entity Registrant Name	TripAdvisor, Inc.
Entity Central Index Key	0001526520
Document Type	10-Q
Document Period End Date	Sep. 30, 2011
Amendment Flag	false
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	No
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		1,000

Balance Sheet (Unaudited)	Sep. 30, 2011 USD ($)
Current asset:
Cash	$ 1,000
TOTAL ASSET	1,000
Stockholder's Equity:
Preferred stock, $0.001 par value per share, 3,000 shares authorized, 0 shares issued and outstanding
Common stock, value	1
Additional paid-in capital	999
TOTAL STOCKHOLDER'S EQUITY	1,000
Common stock, Class B
Stockholder's Equity:
Common stock, value

- Definition

Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.

+ References + Details

Balance Sheet (Unaudited) (Parenthetical)	Sep. 30, 2011 $ / shares shares
Stockholder's Equity:
Preferred stock, par value \| $ / shares	$ 0.001
Preferred stock, shares authorized	3,000
Preferred stock, shares issued	0
Preferred stock, shares outstanding	0
Common Stock, par value \| $ / shares	$ 0.001
Common stock, shares authorized	3,000
Common stock, shares issued	1,000
Common stock, shares outstanding	1,000
Common stock, Class B
Stockholder's Equity:
Common Stock, par value \| $ / shares	$ 0.001
Common stock, shares authorized	4,000
Common stock, shares issued	0
Common stock, shares outstanding	0

Organization - The Spin-Off	9 Months Ended
Organization - The Spin-Off	Sep. 30, 2011
Organization - The Spin-Off [Abstract]
Organization - The Spin-Off	Organization—The Spin-Off On April 7, 2011, Expedia, Inc. (“Expedia”) announced its plan to spin-off its TripAdvisor Media Group business to Expedia’s stockholders and thereby separate into two independent public companies in order to better achieve certain strategic objectives of its various businesses. We refer to this transaction as the “spin-off.” On November 1, 2011, the Securities and Exchange Commission (“SEC”) declared effective the Registration Statement on Form S-4, filed by Expedia and TripAdvisor, Inc. (“TripAdvisor”) and which contained information pertaining to the spin-off and included a definitive proxy statement for Expedia and prospectus for Expedia and TripAdvisor. On December 6, 2011, at Expedia’s annual meeting of stockholders, Expedia’s stockholders approved the spin-off transaction. Also on December 6, 2011, the Board of Directors of Expedia approved a Separation Agreement and related agreements to be entered into between Expedia and TripAdvisor in connection with the spin-off which set forth the terms of and conditions to the spin-off. In connection with the spin-off, TripAdvisor was incorporated as a Delaware corporation on July 20, 2011 (“incorporation date”). TripAdvisor currently does not have any material assets or liabilities, nor does it engage in any business or other activities and, other than in connection with the spin-off, will not acquire or incur any material assets or liabilities, nor will it separately engage in any business or other activities, in each case prior to the spin-off. In connection with the spin-off, we expect Expedia to contribute or transfer all of the subsidiaries and assets relating to Expedia’s TripAdvisor Media Group, to TripAdvisor and expect that TripAdvisor or one of its subsidiaries will assume all of the liabilities relating to Expedia’s TripAdvisor Media Group. The balance sheet of TripAdvisor as of September 30, 2011 represents the amount of initial capitalization that occurred on September 2, 2011, which would also be presented as an investing cash inflow in the statement of cash flows. TripAdvisor did not have any other operating activities during the period from its incorporation date to September 30, 2011, and therefore, a statement of operations, statement of stockholder’s equity and statement of cash flows has not been included herein.

- Definition

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 2-6
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Name Statement of Position (SOP)
-Publisher AICPA
-Number 94-6
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Name FASB Interpretation (FIN)
-Publisher FASB
-Number 46R
-Paragraph 4, 14, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
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-URI http://asc.fasb.org/subtopic&trid=2209116

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Cover Document and Entity Information Financial Statements Balance Sheet (Unaudited) Balance Sheet (Unaudited) (Parenthetical) Notes to Financial Statements Organization - The Spin-Off All Reports Rendering Log