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SHAREHOLDERS' EQUITY (Details Textuals) - USD ($) $ in Thousands		12 Months Ended
	Aug. 04, 2023	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Stockholders' Equity Note [Abstract]
Stock repurchase program, number of shares authorized to be repurchased (in shares)		4,886,353
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		68,494	61,658	87,593
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation		$ 18,200	$ 10,400	$ 12,700
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		62,215	33,992	104,867
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation		$ 11,800	$ 4,400	$ 13,300
Wencor | Common Class A [Member]
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
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

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