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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org//1943274/2147479907/805-20-50-5

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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		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022	Oct. 31, 2022
Selected Financial Statement Information (Details) [Abstract]
Accrued customer rebates and credits	$ 19.5		$ 19.5		$ 17.9
Total customer rebates and credits deducted within net sales	$ 2.0	$ 2.0	$ 4.2	$ 3.7
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]
Percent of ownership sold during the period	2.72%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	6.31%		6.31%
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%