Document and Entity Information
6 Months Ended
Jun. 30, 2015
Jul. 29, 2015
Document and Entity Information [Abstract]    
Entity Registrant Name Priceline Group Inc.  
Entity Central Index Key 0001075531  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Document Type 10-Q  
Document Period End Date Jun. 30, 2015  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   50,701,593