v3.10.0.1
Document and Entity Information Document - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Feb. 27, 2019
Jun. 29, 2018
Entity Information [Line Items]      
Entity Registrant Name EURONET WORLDWIDE INC    
Entity Central Index Key 0001029199    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Document Type 10-K    
Document Period End Date Dec. 31, 2018    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 4,084.0
Entity Common Stock, Shares Outstanding   51,871,238