ACQUISITIONS (Details Textuals) - Jul. 31, 2015	Total
Business Acquisition [Line Items]
Business Combination, Pro Forma Information, Disclosure Impracticable	The amount of net sales and earnings of the fiscal 2015 acquisitions included in the Condensed Consolidated Statements of Operations is not material. Had the fiscal 2015 acquisitions been consummated as of November 1, 2013, net sales, net income from consolidated operations, net income attributable to HEICO, and basic and diluted net income per share attributable to HEICO shareholders on a pro forma basis for the nine and three months ended July 31, 2015 and July 31, 2014 would not have been materially different than the reported amounts.
Aeroworks [Member]
Business Acquisition [Line Items]
Percentage of Voting Interests Acquired	80.00%
Harter [Member]
Business Acquisition [Line Items]
Percentage of Voting Interests Acquired	80.10%
Heico Flight Support Corp [Member] | Aeroworks [Member]
Business Acquisition [Line Items]
Effective Date of Acquisition	Jan. 31, 2015
Name of Acquired Entity	Aeroworks International Holdings, B.V.
Percentage of Voting Interests Acquired	80.00%
Description of Acquired Entity	Aeroworks, which is headquartered in The Netherlands and maintains a significant portion of its production facilities in Thailand and Laos, is a manufacturer of both composite and metal parts used primarily in aircraft interior applications, including seating, galleys, lavatories, doors, and overhead bins.
Ownership Percentage by Noncontrolling Owners	20.00%
Contingent Consideration Arrangements, Description	The total consideration includes an accrual representing the estimated fair value of contingent consideration that the Company may be obligated to pay should Aeroworks meet certain earnings objectives during each of the first four years following the acquisition.
Heico Flight Support Corp [Member] | Harter [Member]
Business Acquisition [Line Items]
Effective Date of Acquisition	Jan. 31, 2015
Name of Acquired Entity	Harter Aerospace, LLC
Percentage of Voting Interests Acquired	80.10%
Description of Acquired Entity	Harter is a globally recognized component and accessory maintenance, repair, and overhaul (MRO) station specializing in commercial aircraft accessories, including thrust reverse actuation systems and pneumatics, and electromechanical components.
Ownership Percentage by Noncontrolling Owners	19.90%
Heico Flight Support Corp [Member] | TEP [Member]
Business Acquisition [Line Items]
Effective Date of Acquisition	May 01, 2015
Name of Acquired Entity	Thermal Energy Products, Inc.
Description of Acquired Entity	TEP engineers, designs and manufactures removable/reusable insulation systems for industrial, commercial, aerospace and defense applications.