Selected Quarterly Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Selected Quarterly Data [Abstract]
Revenues (quarterly)	$ 519,829	$ 524,025	$ 476,867	$ 437,894	$ 470,579	$ 481,373	$ 425,148	$ 395,162	$ 1,958,615	$ 1,772,262	$ 1,664,150
Operating income (loss) (quarterly)	58,106	90,468	59,310	41,889	55,224	70,274	47,180	32,163	249,773	204,841	158,731
Net income (loss)	28,655	60,782	55,577	29,084	33,522	31,324	26,521	7,125	174,098	98,492	101,488
Net income attributable to Euronet Worldwide, Inc. (quarterly)	$ 28,911	$ 60,733	$ 55,677	$ 29,094	$ 33,487	$ 31,334	$ 26,809	$ 7,178	$ 174,415	$ 98,808	$ 101,648
Earnings (loss) per share, basic (quarterly)	$ 0.55	$ 1.16	$ 1.07	$ 0.55	$ 0.63	$ 0.60	$ 0.52	$ 0.14	$ 3.34	$ 1.89	$ 1.96
Earnings (loss) per share, diluted (quarterly)	$ 0.54	$ 1.11	$ 1.04	$ 0.53	$ 0.61	$ 0.57	$ 0.50	$ 0.13	$ 3.23	$ 1.83	$ 1.89