EMPLOYEE RETIREMENT PLANS (Details Textuals) (USD $)	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Defined contribution plan partcipants range minimum	6.00%
Defined contribution plan partcipants employees range maximum	6.00%
Defined contribution plan, vesting of employee contribution and cash dividends, percent	100.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 6,300,000	$ 3,200,000	$ 3,000,000
Defined Benefit Plan, Actuarial Gain (Loss)	900,000	1,000,000
Heico Common Stock [Member]
Shares Registered for Issuance			187,500
Common Class A [Member]
Shares Registered for Issuance			187,500
Minimum [Member]
Defined contribution plan partcipants range minimum	25.00%
Maximum [Member]
Defined contribution plan partcipants range minimum	50.00%
FY 2013 Acquisition [Member]
Employer contributions	136,000
Defined Benefit Plan, Funded Status of Plan	(2,456,000)	(1,816,000)
Defined Benefit Plan, Actuarial Gain (Loss)	930,000	(1,165,000)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, before Reclassification Adjustments, Tax	(300,000)	400,000
Defined Benefit Plan, Actuarial Gain (Loss) before Tax	100,000
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	$ 100,000