NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2011	Jan. 31, 2011	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Numerator:
Net income attributable to HEICO	$ 23,791	$ 23,128	$ 19,043	$ 19,185	$ 18,514	$ 20,402	$ 16,830	$ 17,074	$ 85,147	$ 72,820	$ 54,938
Less: redemption amount of redeemable noncontrolling interests in excess of fair value (see Note 12)									13	19	(102)
Net income attributable to HEICO, as adjusted									$ 85,160	$ 72,839	$ 54,836
Denominator:
Weighted average common shares outstanding - basic (in shares)									52,689	52,040	51,301
Effect of dilutive stock options (in shares)									610	1,087	1,466
Weighted average common shares outstanding - diluted (in shares)									53,299	53,127	52,767
Net income per share attributable to HEICO shareholders (Note 13):
Basic (in dollars per share)	$ 0.45	$ 0.44	$ 0.36	$ 0.36	$ 0.35	$ 0.39	$ 0.32	$ 0.33	$ 1.62	$ 1.40	$ 1.07
Diluted (in dollars per share)	$ 0.45	$ 0.43	$ 0.36	$ 0.36	$ 0.35	$ 0.38	$ 0.32	$ 0.32	$ 1.60	$ 1.37	$ 1.04
Anti-dilutive stock options excluded (in shares)									711	481	649