NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011
Numerator:
Net income attributable to HEICO	$ 19,043	$ 16,830	$ 38,228	$ 33,904
Denominator:
Weighted average common shares outstanding - basic (in shares)	52,648	52,034	52,630	51,867
Effect of dilutive stock options (in shares)	648	1,069	660	1,175
Weighted average common shares outstanding - diluted (in shares)	53,296	53,103	53,290	53,042
Net income per share attributable to HEICO shareholders:
Basic (in dollars per share)	$ 0.36	$ 0.32	$ 0.73	$ 0.65
Diluted (in dollars per share)	$ 0.36	$ 0.32	$ 0.72	$ 0.64
Anti-dilutive stock options excluded (in shares)	645	654	641	496