v2.4.0.8
Cover Document
6 Months Ended
Jun. 30, 2014
Aug. 01, 2014
Common Class A [Member]
Aug. 01, 2014
Common Class B [Member]
Entity Registrant Name Groupon, Inc.    
Entity Central Index Key 0001490281    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Document Type 10-Q    
Document Period End Date Jun. 30, 2014    
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus Q2    
Amendment Flag false    
Common Stock, Shares, Outstanding   666,933,836 2,399,976