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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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SELECTED FINANCIAL STATEMENT INFORMATION (Details Textuals) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Jul. 31, 2023	Apr. 30, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022	Oct. 31, 2022
Selected Financial Statement Information (Details) [Abstract]
Accrued customer rebates and credits	$ 19.6			$ 19.6		$ 17.9
Total customer rebates and credits deducted within net sales	$ 1.9		$ 2.2	$ 6.1	$ 5.9
FY 2015 Acquisition \| Flight Support Group [Member] \| Flight Support Group [Member]
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	19.90%			19.90%
Noncontrolling Interest, Ownership Percentage by Parent	85.10%			85.10%
Exxelia \| Heico Electronic Technologies Corp
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	93.69%			93.69%
Exxelia \| Heico Electronic Technologies Corp \| Existing Management
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	6.31%			6.31%
Percent of ownership sold during the period		2.72%
Exxelia \| Heico Electronic Technologies Corp \| Exxelia
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	90.97%			90.97%
Alcon \| Heico Electronic Technologies Corp
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	90.00%			90.00%
Alcon \| Heico Electronic Technologies Corp \| Existing Management
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	10.00%			10.00%