NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Numerator:
Net income attributable to HEICO	$ 102,023	$ 82,540	$ 300,170	$ 254,471
Denominator:
Weighted Average Number of Shares Outstanding, Basic	137,006	135,978	136,859	135,835
Effect of dilutive stock options	1,662	1,859	1,757	2,055
Weighted Average Number of Shares Outstanding, Diluted	138,668	137,837	138,616	137,890
Earnings Per Share, Basic	$ 0.74	$ 0.61	$ 2.19	$ 1.87
Earnings Per Share, Diluted	$ 0.74	$ 0.60	$ 2.17	$ 1.85
Anti-dilutive stock options excluded	1,323	767	1,138	748