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SHAREHOLDERS' EQUITY (Details Textuals) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Aug. 04, 2023 | Oct. 31, 2023 | Oct. 31, 2022 | Oct. 31, 2021
Stockholders' Equity Note [Abstract] |  |  |  |
Stock repurchase program, number of shares authorized to be repurchased (in shares) |  | 4,886,353 |  |
Sensor | HEICO Electronic [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock Issued During Period, Shares, Acquisitions |  | 576,338 |  |
Noncontrolling Interest [Line Items] |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 100.00% |  |
Stock Issued During Period, Shares, Acquisitions |  | 576,338 |  |
Common Class A [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation |  | 33,992 | 104,867 | 32,355
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation |  | $ 4,400 | $ 13,300 | $ 3,800
Common Class A [Member] | Wencor |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock Issued During Period, Shares, Acquisitions | 1,137,628 |  |  |
Stock Issued During Period, Shares, Acquisitions, Registered Portion | 1,054,606 |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Stock Issued During Period, Shares, Acquisitions | 1,137,628 |  |  |
Heico Common Stock [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation |  | 61,658 | 87,593 |
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation |  | $ 10,400 | $ 12,700 |

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