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, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Numerator:
Net income attributable to HEICO	$ 29,791	$ 28,947	$ 23,700	$ 19,958	$ 23,791	$ 23,128	$ 19,043	$ 19,185	$ 102,396	$ 85,147	$ 72,820
Less: redemption amount of redeemable noncontrolling interests in excess of fair value (see Note 12)									0	13	19
Net income attributable to HEICO, as adjusted									$ 102,396	$ 85,160	$ 72,839
Denominator:
Weighted average common shares outstanding - basic (in shares)									66,298	65,861	65,050
Effect of dilutive stock options (in shares)									684	763	1,358
Weighted average common shares outstanding - diluted (in shares)									66,982	66,624	66,408
Net income per share attributable to HEICO shareholders:
Basic (in dollars per share)	$ 0.45	$ 0.44	$ 0.36	$ 0.30	$ 0.36	$ 0.35	$ 0.29	$ 0.29	$ 1.54	$ 1.29	$ 1.12
Diluted (in dollars per share)	$ 0.44	$ 0.43	$ 0.35	$ 0.30	$ 0.36	$ 0.35	$ 0.29	$ 0.29	$ 1.53	$ 1.28	$ 1.10
Anti-dilutive stock options excluded (in shares)									754	888	601