NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Numerator:
Net income attributable to HEICO	$ 40,927	$ 31,271
Denominator:
Weighted Average Number of Shares Outstanding, Basic	67,314	66,875
Effect of dilutive stock options	1,809	1,065
Weighted Average Number of Shares Outstanding, Diluted	69,123	67,940
Earnings Per Share, Basic	$ 0.61	$ 0.47
Earnings Per Share, Diluted	$ 0.59	$ 0.46
Anti-dilutive stock options excluded	137	715