Represents the applicable margin added to the variable rate of the debt instrument.

Name:	pcln_DebtInstrumentApplicableMarginOverVariableRate
Namespace Prefix:	pcln
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

This element represents the term related to a revolving credit facility.

+ Details

Name:	pcln_LineOfCreditFacilityCommittedPeriod
Namespace Prefix:	pcln
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the maximum amount available for swing loans under the terms of the revolving credit facility.

+ Details

Name:	pcln_LineOfCreditFacilityMaximumAvailableForSwingLoans
Namespace Prefix:	pcln
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the maximum amount of letters of credit that can be issued under the terms of the revolving credit facility.

+ Details

Name:	pcln_LineOfCreditFacilityRevolvingCreditMaximumAmountOfLetterOfCreditToBeIssued
Namespace Prefix:	pcln
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the borrowing capacity of the line of credit facility which was terminated.

+ Details

Name:	pcln_LineOfCreditFacilityTerminatedAmount
Namespace Prefix:	pcln
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate
Namespace Prefix:	us-gaap
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ Details

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap
Data Type:	num:percentItemType
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.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

SUBSEQUENT EVENT (Details) (USD $)				1 Months Ended				1 Months Ended			1 Months Ended
SUBSEQUENT EVENT (Details) (USD $)	Oct. 31, 2011	Nov. 07, 2011 New credit facility 2011 Revolving Credit Facility	Oct. 31, 2011 New credit facility 2011 Revolving Credit Facility Years	Oct. 31, 2011 New credit facility 2011 Revolving Credit Facility Federal funds rate	Oct. 31, 2011 New credit facility 2011 Revolving Credit Facility LIBOR	Oct. 31, 2011 New credit facility 2011 Revolving Credit Facility LIBOR Minimum	Oct. 31, 2011 New credit facility 2011 Revolving Credit Facility LIBOR Maximum	Oct. 31, 2011 New credit facility 2011 Revolving Credit Facility One Month LIBOR	Oct. 31, 2011 New credit facility 2011 Revolving Credit Facility One Month LIBOR Minimum	Oct. 31, 2011 New credit facility 2011 Revolving Credit Facility One Month LIBOR Maximum	Oct. 31, 2011 New credit facility 2011 Revolving Credit Facility Minimum	Oct. 31, 2011 New credit facility 2011 Revolving Credit Facility Maximum
Subsequent event
Revolving credit facility			$ 1,000,000,000
Period of revolving credit facility (in years)			5
Variable rate basis				Federal funds rate	LIBOR			One month LIBOR
Basis spread on variable rate				0.50%				1.00%
Applicable margin added to base rate (as a percent)						1.00%	1.50%		0.00%	0.50%
Revolving credit facility, commitment fees at the applicable rate											0.10%	0.25%
Letters of credit, maximum amount issuable under credit facility			100,000,000
Swing loans, maximum borrowing capacity under credit facility			50,000,000
Letters of credit issued by the company under revolving credit facility		1,800,000
Borrowing capacity of the terminated line of credit facility	$ 175,000,000