NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013
Numerator:
Net income attributable to HEICO	$ 33,366	$ 28,947	$ 89,188	$ 72,605
Denominator:
Weighted average common shares outstanding - basic (in shares)	66,497	66,342	66,442	66,275
Effect of dilutive stock options (in shares)	977	673	985	620
Weighted average common shares outstanding - diluted (in shares)	67,474	67,015	67,427	66,895
Earnings Per Share, Basic	$ 0.50	$ 0.44	$ 1.34	$ 1.10
Earnings Per Share, Diluted	$ 0.49	$ 0.43	$ 1.32	$ 1.09
Anti-dilutive stock options excluded	442	799	430	826