NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023
Numerator:
Net income attributable to HEICO	$ 123,146	$ 105,120	$ 237,844	$ 198,147
Denominator:
Weighted Average Number of Shares Outstanding, Basic	138,386	136,916	138,325	136,786
Effect of dilutive stock options	1,673	1,684	1,651	1,804
Weighted Average Number of Shares Outstanding, Diluted	140,059	138,600	139,976	138,590
Earnings Per Share, Basic	$ 0.89	$ 0.77	$ 1.72	$ 1.45
Earnings Per Share, Diluted	$ 0.88	$ 0.76	$ 1.70	$ 1.43
Anti-dilutive stock options excluded	1,009	1,340	1,215	1,045