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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% |  |

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