Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Revenues	$ 649,385	$ 714,505	$ 622,224	$ 550,515	$ 604,645	$ 637,834	$ 536,563	$ 473,380	$ 2,536,629	$ 2,252,422	$ 1,958,615
Operating expenses:
Direct operating costs									1,488,406	1,356,250	1,174,545
Salaries and benefits									360,432	310,787	288,420
Selling, general and administrative									216,807	190,302	165,348
Goodwill and Intangible Asset Impairment									7,049	34,056	0
Depreciation and amortization									106,021	95,030	80,529
Total operating expenses									2,178,715	1,986,425	1,708,842
Operating income	71,160	150,913	90,369	45,472	41,119	116,901	66,691	41,286	357,914	265,997	249,773
Other income (expense):
Interest income									1,320	2,443	1,696
Interest expense									(37,573)	(32,571)	(28,332)
(Loss) income from unconsolidated affiliates									(117)	48	0
Other gains, net									27	118	19,956
Foreign currency exchange (loss) gain, net									(26,655)	20,300	(10,200)
Other expense, net									(62,998)	(9,662)	(16,880)
Income before income taxes									294,916	256,335	232,893
Income tax expense									(62,785)	(99,395)	(58,795)
Net income	59,894	102,257	43,636	26,344	(22,829)	100,353	51,347	28,069	232,131	156,940	174,098
Less: Net (income) loss attributable to noncontrolling interests									720	(95)	317
Net income attributable to Euronet Worldwide, Inc.	$ 59,991	$ 102,723	$ 43,724	$ 26,413	$ (22,933)	$ 100,290	$ 51,365	$ 28,123	$ 232,851	$ 156,845	$ 174,415
Earnings per share attributable to Euronet Worldwide, Inc. stockholders - basic	$ 1.16	$ 2.01	$ 0.85	$ 0.51	$ (0.44)	$ 1.91	$ 0.98	$ 0.54	$ 4.52	$ 2.99	$ 3.34
Earnings per share attributable to Euronet Worldwide, Inc. stockholders - diluted	$ 1.10	$ 1.89	$ 0.82	$ 0.49	$ (0.44)	$ 1.80	$ 0.93	$ 0.51	$ 4.26	$ 2.85	$ 3.23
Weighted average shares outstanding - basic									51,487,557	52,523,272	52,276,951
Weighted average shares outstanding - diluted									54,627,747	55,116,327	54,001,079