NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Numerator:
Net income attributable to HEICO	$ 23,700	$ 19,043	$ 43,658	$ 38,228
Denominator:
Weighted average common shares outstanding - basic (in shares)	53,035	52,648	52,993	52,630
Effect of dilutive stock options (in shares)	463	648	475	660
Weighted average common shares outstanding - diluted (in shares)	53,498	53,296	53,468	53,290
Net income per share attributable to HEICO shareholders:
Basic (in dollars per share)	$ 0.45	$ 0.36	$ 0.82	$ 0.73
Diluted (in dollars per share)	$ 0.44	$ 0.36	$ 0.82	$ 0.72
Anti-dilutive stock options excluded (in shares)	598	645	672	641