NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 31, 2025	Jan. 31, 2024
Numerator:
Net income attributable to HEICO	$ 167,955	$ 114,698
Denominator:
Weighted Average Number of Shares Outstanding, Basic	138,837	138,265
Effect of dilutive stock options	1,647	1,628
Weighted Average Number of Shares Outstanding, Diluted	140,484	139,893
Earnings Per Share, Basic	$ 1.21	$ 0.83
Earnings Per Share, Diluted	$ 1.20	$ 0.82
Anti-dilutive stock options excluded	53	1,422