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, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
Numerator:
Net income attributable to HEICO	$ 38,657	$ 33,105	$ 69,928	$ 60,745
Denominator:
Weighted Average Number of Shares Outstanding, Basic	66,923	66,711	66,899	66,653
Effect of dilutive stock options	1,105	1,090	1,085	1,082
Weighted Average Number of Shares Outstanding, Diluted	68,028	67,801	67,984	67,735
Earnings Per Share, Basic	$ 0.58	$ 0.50	$ 1.05	$ 0.91
Earnings Per Share, Diluted	$ 0.57	$ 0.49	$ 1.03	$ 0.90
Anti-dilutive stock options excluded	737	305	726	305