NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Numerator:
Net income attributable to HEICO	$ 114,698	$ 93,027
Denominator:
Weighted Average Number of Shares Outstanding, Basic	138,265	136,655
Effect of dilutive stock options	1,628	1,924
Weighted Average Number of Shares Outstanding, Diluted	139,893	138,579
Earnings Per Share, Basic	$ 0.83	$ 0.68
Earnings Per Share, Diluted	$ 0.82	$ 0.67
Anti-dilutive stock options excluded	1,422	750