Document and Entity Information Document - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2019	Feb. 28, 2020	Jun. 28, 2019
Entity Information [Line Items]
Entity File Number		001-31648
Entity Shell Company	false
Document Annual Report		true
Entity Small Business		false
City Area Code		(913)
Local Phone Number		327-4200
Entity Address, Address Line One	3500 College Boulevard
Entity Address, City or Town		Leawood,
Entity Address, State or Province		KS
Entity Incorporation, State or Country Code		DE
Entity Registrant Name		EURONET WORLDWIDE INC
Entity Central Index Key		0001029199
Current Fiscal Year End Date		--12-31
Document Type		10-K
Document Period End Date		Dec. 31, 2019
Document Fiscal Year Focus		2019
Document Fiscal Period Focus		FY
Amendment Flag		false
Entity Well-known Seasoned Issuer		Yes
Entity Voluntary Filers		No
Entity Current Reporting Status		Yes
Entity Interactive Data Current		Yes
Entity Public Float				$ 8,800.0
Entity Common Stock, Shares Outstanding			53,519,855
Entity Tax Identification Number		74-2806888
Entity Address, Postal Zip Code		66211
Entity Emerging Growth Company		false
Document Transition Report		false
1.375% Senior Notes due 2026 [Member]
Entity Information [Line Items]
Title of 12(b) Security		1.375% Senior Notes due 2026
Trading Symbol		EEFT26
Security Exchange Name		NASDAQ
Common Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security		Common Stock
Trading Symbol		EEFT
Security Exchange Name		NASDAQ