Name:	pcln_PortionofRedeemableSharesSubjecttoPutandCallOptions
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Period Type:	duration

Percentage of ownership interest in new subsidiary purchased from parent by key members of an existing wholly-owned subsidiary management team which, combined with the shares held by the management team of the newly acquired subsidiary, represent the redeemable shares. The holders of the redeemable shares have the right to put their shares to the parent company and the parent company has the right to call the shares in each case at a purchase price reflecting the fair value of the redeemable shares at the time of exercise.

No definition available.

Name:	pcln_RedeemableNoncontrollingInterestOwnershipInterestPurchasedFromParentByKeyManagementTeamMembersOfSubsidiary
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

This element represents the effect due to a change in redeemable noncontrolling interest during the period as a result of change in the fair value of redeemable noncontrolling interest.

No definition available.

Name:	pcln_RedeemableNoncontrollingInterestsFairValueAdjustmentNetOfTax
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Data Type:	xbrli:monetaryItemType
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Amount of income (loss) from continuing operations attributable to the noncontrolling interest. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=51664549&loc=SL4569616-111683

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Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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-Subparagraph (SX 210.3-04)
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Period Type:	duration

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

No definition available.

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Data Type:	num:percentItemType
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Period Type:	instant

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Period Type:	duration

Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to noncontrolling interests.

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

The cash outflow during the period for redemption of redeemable noncontrolling interests.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Paragraph 13
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-URI http://asc.fasb.org/extlink&oid=6516133

Name:	us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
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Period Type:	duration

The fair value as of the reporting date of noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. The noncontrolling interest holder's ownership (or holders' ownership) may be in the form of common shares (regardless of class), limited partnership units (regardless of class), non-preferential membership interests, or any other form of common equity regardless of investee entity legal form.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 480
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Name:	us-gaap_RedeemableNoncontrollingInterestEquityCommonFairValue
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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.

No definition available.