SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textuals)	12 Months Ended						12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010	Apr. 25, 2012	Apr. 26, 2011	Apr. 27, 2010	Oct. 31, 2012 Minimum [Member] Customer Relationships [Member]	Oct. 31, 2012 Minimum [Member] Intellectual Property [Member]	Oct. 31, 2012 Minimum [Member] Licensing Agreements [Member]	Oct. 31, 2012 Minimum [Member] Noncompete Agreements [Member]	Oct. 31, 2012 Minimum [Member] Patents [Member]	Oct. 31, 2012 Minimum [Member] Trade Names [Member]	Oct. 31, 2012 Minimum [Member] Building and Building Improvements [Member]	Oct. 31, 2012 Minimum [Member] Leasehold Improvements [Member]	Oct. 31, 2012 Minimum [Member] Other Machinery and Equipment [Member]	Oct. 31, 2012 Minimum [Member] Tools, Dies and Molds [Member]	Oct. 31, 2012 Maximum [Member] Customer Relationships [Member]	Oct. 31, 2012 Maximum [Member] Intellectual Property [Member]	Oct. 31, 2012 Maximum [Member] Licensing Agreements [Member]	Oct. 31, 2012 Maximum [Member] Noncompete Agreements [Member]	Oct. 31, 2012 Maximum [Member] Patents [Member]	Oct. 31, 2012 Maximum [Member] Trade Names [Member]	Oct. 31, 2012 Maximum [Member] Building and Building Improvements [Member]	Oct. 31, 2012 Maximum [Member] Leasehold Improvements [Member]	Oct. 31, 2012 Maximum [Member] Other Machinery and Equipment [Member]	Oct. 31, 2012 Maximum [Member] Tools, Dies and Molds [Member]	Oct. 31, 2012 Lufthansa Technik Ag [Member]	Oct. 31, 2012 Joint Venture [Member]	Dec. 31, 2010 Blue Aerospace [Member]	Oct. 31, 2012 Subsidiary of Electronic Technologies Group [Member] Subsidiary One [Member]	Oct. 31, 2012 Aerospace Holdings Corp. [Member] Subsidiary One [Member]	Oct. 31, 2012 Aerospace Holdings Corp. [Member] Subsidiary Two [Member]	Oct. 31, 2012 Aerospace Holdings Corp. [Member] Subsidiary Three [Member]	Oct. 31, 2012 Aerospace Holdings Corp. [Member] Subsidiary Four [Member]	Oct. 31, 2012 Electronic Technologies Group [Member] Subsidiary One [Member]	Oct. 31, 2012 Electronic Technologies Group [Member] Subsidiary Two [Member]	Oct. 31, 2012 Electronic Technologies Group [Member] Subsidiary Three [Member]	Oct. 31, 2012 Flight Support Corp [Member] Subsidiary One [Member]	Oct. 31, 2012 Flight Support Corp [Member] Subsidiary Two [Member]
Percentage of interest owned by noncontrolling shareholders																											20.00%	84.00%	19.90%
Noncontrolling Interest, Ownership Percentage by HEICO																														78.00%	80.10%	80.10%	82.30%	86.70%	80.10%	82.50%	95.90%	80.10%	84.00%
Stock Dividend Percentage Rate				25.00%	25.00%	25.00%
Stockholders' Equity Note, Stock Split	All applicable share and per share information has been adjusted retrospectively to give effect to the 5-for-4 stock splits.
Property, Plant and Equipment, Useful Life													15 years	2 years	3 years	2 years							40 years	20 years	10 years	5 years
Finite-Lived Intangible Asset, Useful Life							5 years	6 years	10 years	2 years	5 years	5 years					10 years	15 years	17 years	7 years	19 years	10 years
Net Sales Recognized Percentage Of Completion Method	1.00%	1.00%	2.00%