DOCUMENT AND ENTITY INFORMATION DOCUMENT Document and Entity Information Document (USD $) In Billions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Feb. 20, 2013	Jun. 30, 2012
Document Information [Line Items]
Document Period End Date	Dec. 31, 2012
Document Fiscal Year Focus	2012
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Fiscal Period Focus	FY
Entity Registrant Name	PRICELINE COM INC
Amendment Flag	false
Entity Common Stock, Shares Outstanding		49,870,893
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Central Index Key	0001075531
Current Fiscal Year End Date	--12-31
Entity Public Float			$ 32.8