Document and Entity Information (USD $)
In Millions, except Share data, unless otherwise specified
6 Months Ended
Jun. 30, 2010
Jul. 31, 2010
Jun. 30, 2009
Document and Entity Information [Abstract]      
Entity Registrant Name EURONET WORLDWIDE INC    
Entity Central Index Key 0001029199    
Document Type 10-Q    
Document Period End Date Jun. 30, 2010    
Amendment Flag false    
Document Fiscal Year Focus 2010    
Document Fiscal Period Focus Q2    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 927.2
Entity Common Stock, Shares Outstanding   50,990,720