ACQUISITIONS	6 Months Ended
Apr. 30, 2017
Business Combinations [Abstract]
Acquisitions [Text Block]	ACQUISITION On April 24, 2017, the Company, through a subsidiary of HEICO Flight Support Corp., acquired 80.1% of the equity interests of LLP Enterprises, LLC, which owns all of the outstanding equity interests of the operating units of Air Cost Control ("A2C"). A2C is a leading aviation electrical interconnect product distributor of items such as connectors, wire, cable, protection and fastening systems, in addition to distributing a wide range of electromechanical parts. The remaining 19.9% interest continues to be owned by certain members of A2C's management team (see Note 3, Selected Financial Statement Information, for additional information). The purchase price of A2C was paid in cash principally using proceeds from the Company’s revolving credit facility. The total consideration for the acquisition of A2C is not material or significant to the Company's condensed consolidated financial statements and the related allocation to the tangible and identifiable intangible assets acquired and liabilities and noncontrolling interests assumed is preliminary until the Company obtains final information regarding their fair values. The operating results of A2C were included in the Company’s results of operations from the effective acquisition date. The amount of net sales and earnings of A2C included in the Company's Condensed Consolidated Statements of Operations is not material. Had the acquisition of A2C occurred as of November 1, 2015, net sales on a pro forma basis for the six months ended April 30, 2017 and 2016 would have been $753.2 million and $696.2 million, respectively, and net sales on a pro forma basis for the three months ended April 30, 2017 and 2016 would have been $389.1 million and $372.5 million, respectively. 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 six and three months ended April 30, 2017 and 2016 would not have been materially different than the reported amounts. The pro forma financial information is presented for comparative purposes only and is not necessarily indicative of the results of operations that actually would have been achieved if the acquisition had taken place as of November 1, 2015.

ACQUISITIONS

6 Months Ended

Apr. 30, 2017

ACQUISITION

On April 24, 2017, the Company, through a subsidiary of HEICO Flight Support Corp., acquired 80.1% of the equity interests of LLP Enterprises, LLC, which owns all of the outstanding equity interests of the operating units of Air Cost Control ("A2C"). A2C is a leading aviation electrical interconnect product distributor of items such as connectors, wire, cable, protection and fastening systems, in addition to distributing a wide range of electromechanical parts. The remaining 19.9% interest continues to be owned by certain members of A2C's management team (see Note 3, Selected Financial Statement Information, for additional information).

The purchase price of A2C was paid in cash principally using proceeds from the Company’s revolving credit facility. The total consideration for the acquisition of A2C is not material or significant to the Company's condensed consolidated financial statements and the related allocation to the tangible and identifiable intangible assets acquired and liabilities and noncontrolling interests assumed is preliminary until the Company obtains final information regarding their fair values. The operating results of A2C were included in the Company’s results of operations from the effective acquisition date. The amount of net sales and earnings of A2C included in the Company's Condensed Consolidated Statements of Operations is not material.

Had the acquisition of A2C occurred as of November 1, 2015, net sales on a pro forma basis for the six months ended April 30, 2017 and 2016 would have been $753.2 million and $696.2 million, respectively, and net sales on a pro forma basis for the three months ended April 30, 2017 and 2016 would have been $389.1 million and $372.5 million, respectively. 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 six and three months ended April 30, 2017 and 2016 would not have been materially different than the reported amounts. The pro forma financial information is presented for comparative purposes only and is not necessarily indicative of the results of operations that actually would have been achieved if the acquisition had taken place as of November 1, 2015.