Document and Entity Information Document (USD $) In Billions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Aug. 01, 2013	Jun. 30, 2012
Document Information [Line Items]
Document Period End Date	Jun. 30, 2013
Document Fiscal Year Focus	2013
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Fiscal Period Focus	Q2
Entity Registrant Name	PRICELINE COM INC
Entity Central Index Key	0001075531
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Entity Common Stock, Shares Outstanding		51,500,530
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 32.8