v2.4.0.6
Cover Document
9 Months Ended
Sep. 30, 2012
Nov. 07, 2012
Common Class A [Member]
Nov. 07, 2012
Common Class B [Member]
Entity Registrant Name Groupon, Inc.    
Entity Central Index Key 0001490281    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Document Type 10-Q    
Document Period End Date Sep. 30, 2012    
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus Q3    
Amendment Flag false    
Common Stock, Shares, Outstanding   653,316,120 2,399,976