NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) (USD $)	3 Months Ended		9 Months Ended
	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2011	Jul. 31, 2010
Numerator:
Net income attributable to HEICO	$ 20,402,000	$ 14,930,000	$ 54,306,000	$ 39,296,000
Denominator:
Weighted average common shares outstanding-basic	41,729,088	41,146,913	41,572,003	40,991,421
Effect of dilutive stock options	840,545	1,099,926	907,207	1,200,347
Weighted average common shares outstanding-diluted	42,569,633	42,246,839	42,479,210	42,191,768
Net income per share attributable to HEICO shareholders:
Basic (in dollars per share)	$ 0.49	$ 0.36	$ 1.31	$ 0.96
Diluted (in dollars per share)	$ 0.48	$ 0.35	$ 1.28	$ 0.93
Anti-dilutive stock options excluded	273,125	539,063	355,417	540,365