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