Selected Quarterly Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Selected Quarterly Data [Abstract]
Revenues	$ 693,747	$ 786,986	$ 691,867	$ 577,509	$ 649,385	$ 714,505	$ 622,224	$ 550,515	$ 2,750,109	$ 2,536,629	$ 2,252,422
Operating income (loss) (quarterly)	107,213	193,990	117,897	56,094	71,160	150,913	90,369	45,472	475,194	357,914	265,997
Net income (loss)	106,570	137,541	68,005	34,579	59,894	102,257	43,636	26,344	346,695	232,131	156,940
Net income attributable to Euronet Worldwide, Inc. (quarterly)	$ 106,446	$ 137,607	$ 68,153	$ 34,543	$ 59,991	$ 102,723	$ 43,724	$ 26,413	$ 346,749	$ 232,851	$ 156,845
Earnings (loss) per share, basic (quarterly)	$ 1.96	$ 2.53	$ 1.28	$ 0.67	$ 1.16	$ 2.01	$ 0.85	$ 0.51	$ 6.49	$ 4.52	$ 2.99
Earnings (loss) per share, diluted (quarterly)	$ 1.91	$ 2.46	$ 1.25	$ 0.62	$ 1.10	$ 1.89	$ 0.82	$ 0.49	$ 6.31	$ 4.26	$ 2.85