Spin Off Adjustment Details (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2011
Spin Off Transaction [Line Items]
TripAdvisor Invested Equity as of December 20, 2011	$ 521,792
Reclassification of TripAdvisor's intercompany receivable from Expedia, which was extinguished in connection with the spin-off	(191,349)
Adjustments to Expedia's TripAdvisor Media Group reporting unit goodwill required to effect the spin-off	317,085
Reduction to additional paid-in capital related to spin-off	$ 647,528

The change in equity as a result of a spin-off transaction (a regular or reverse spin-off) which is based on the recorded amounts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 02-11

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6749415

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 60

-Section 25

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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