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ACQUISITIONS (Details Textuals) - USD ($) $ in Thousands |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 04, 2023 | Oct. 31, 2024 | Oct. 31, 2023 | Oct. 31, 2022 | Oct. 31, 2021 | Jan. 31, 2023 | Jan. 05, 2023
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisition Costs |  |  | $ 25,400 |  |  |  |
Net sales |  | $ 3,857,669 | 2,968,105 | $ 2,208,322 |  |  |
Net income |  | $ 514,109 | 403,596 | 351,675 |  |  |
ELT |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Name Of Acquired Product Line |  | Aircraft Emergency Locator Transmitter |  |  |  |  |
Description of Acquired Product Line |  | ELTs provide critical emergency transmission signals in the event of aircraft impact on land or water to enable first responders to locate the aircraft. |  |  |  |  |
Wencor |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Effective Date of Acquisition |  | Aug. 04, 2023 |  |  |  |  |
Name of Acquired Entity |  | Wencor Group |  |  |  |  |
Description of Acquired Entity |  | Wencor is a large commercial and military aircraft aftermarket company offering factory-new FAA-approved aircraft replacement parts, value-added distribution of high-use commercial and military aftermarket parts, and aircraft and engine accessory component repair and overhaul services. |  |  |  |  |
Business Combination, Reason for Business Combination |  | Wencor expands the Company’s aftermarket product offerings, enabling the combined company to offer even greater savings and capabilities to its customers, while expanding its new products and services development capacity. |  |  |  |  |
Amount of contingent purchase consideration, the company could be required to pay | $ 17,000 |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities |  | $ 205,146 |  |  |  |  |
Cash paid | 1,900,000 | $ 1,923,098 |  |  |  |  |
Acquisition Costs |  |  | 20,000 |  |  |  |
Net sales |  |  | 185,700 |  |  |  |
Net income |  |  | 22,600 |  |  |  |
Pro Forma Revenue |  |  | 3,476,300 | 2,682,328 |  |  |
Debt Related Commitment Fees and Debt Issuance Costs | $ 3,800 |  |  |  |  |  |
Pro Forma Revenue |  |  | 3,476,300 | 2,682,328 |  |  |
Wencor | Common Class A [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Acquisitions | 1,137,628 |  |  |  |  |  |
Wencor | Customer Relationships [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 13 years |  |  |  |  |
Wencor | Intellectual Property [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 14 years |  |  |  |  |
Exxelia |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Effective Date of Acquisition |  | Jan. 05, 2023 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities |  | $ 100,323 |  |  |  |  |
Cash paid |  | $ 515,785 |  |  |  |  |
Net sales |  |  | 179,000 |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  | 5.18% |  |  |  |  |
Pro Forma Revenue |  |  |  | 2,402,500 |  |  |
Pro Forma Revenue |  |  |  | $ 2,402,500 |  |  |
Exxelia | Customer Relationships [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 15 years |  |  |  |  |
Exxelia | Intellectual Property [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 15 years |  |  |  |  |
ELT |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business Combination, Reason for Business Combination |  | The transaction provides the HEICO Electronic subsidiary with all rights to produce, sell and repair both fixed and portable Honeywell ELTs, as well as various support equipment. |  |  |  |  |
FY2022 Acquisitions |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  | 14 years |  |  |
Pro Forma Revenue |  |  |  |  | $ 2,325,200 |  |
Pro Forma Revenue |  |  |  |  | $ 2,325,200 |  |
FY2022 Acquisitions | Customer Relationships [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  | 15 years |  |  |
FY2022 Acquisitions | Intellectual Property [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  |  | 13 years |  |  |
HEICO Electronic [Member] | Exxelia |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  | 90.69% |  |  |  |  |
HEICO Electronic [Member] | Exxelia |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Name of Acquired Entity |  | Exxelia International SAS |  |  |  |  |
Description of Acquired Entity |  | Exxelia designs, manufactures and sells high reliability (“Hi-Rel”), complex, passive electronic components and rotary joint assemblies for mostly aerospace and defense applications, in addition to other high-end applications, such as medical and energy uses, including emerging “clean energy” and electrification applications. |  |  |  |  |
Business Combination, Reason for Business Combination |  | The Company believes that this acquisition will further HEICO's strategy of expanding its already wide range of mission-critical and Hi-Rel components for the most demanding applications, as well as provide HEICO with added broad geographic and product diversity, including in the important European market. |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  | 93.69% | 93.69%
Acquisition Costs |  |  | 5,500 |  |  |  |
Business Acquisition, Acquisition Costs |  |  | $ 5,100 |  |  |  |
HEICO Electronic [Member] | Exxelia | Existing Management [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of interest owned by noncontrolling shareholders |  |  |  |  |  |  | 6.31%
HEICO Electronic [Member] | Alcon |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Name of Acquired Entity |  | Alcon Electronics Pvt. Ltd. |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  |  | 90.00%
HEICO Electronic [Member] | Alcon | Existing Management [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of interest owned by noncontrolling shareholders |  |  |  |  |  |  | 10.00%
HEICO Electronic [Member] | TRAD |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Name of Acquired Entity |  | TRAD Tests & Radiations SAS |  |  |  |  |
Description of Acquired Entity |  | TRAD specializes in radiation engineering, including test and simulation of radiation effects on electronic components and materials, developing and providing software for radiation testing and effects modeling, and sourcing/screening radiation tolerant and radiation hardened components. |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 100.00% |  |  |  |  |
HEICO Electronic [Member] | Ironwood |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Name of Acquired Entity |  | Ironwood Electronics, Inc. |  |  |  |  |
Description of Acquired Entity |  | Ironwood designs and manufactures high performance test sockets and adapters for both engineering and production use of semiconductor devices. |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 80.36% |  |  |  |  |
Amount of contingent purchase consideration, the company could be required to pay |  | $ 6,400 |  |  |  |  |
HEICO Electronic [Member] | Ironwood | Existing Management [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of interest owned by noncontrolling shareholders |  | 19.64% |  |  |  |  |
HEICO Electronic [Member] | Sensor |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Name of Acquired Entity |  | Sensor Systems, Inc. |  |  |  |  |
Description of Acquired Entity |  | Sensor designs and manufactures airborne antennas for commercial and military applications. |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 100.00% |  |  |  |  |
Stock Issued During Period, Shares, Acquisitions |  | 576,338 |  |  |  |  |
HEICO Electronic [Member] | Charter |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Name of Acquired Entity |  | Charter Engineering, Inc. |  |  |  |  |
Description of Acquired Entity |  | Charter designs and manufactures a complete line of RF and Microwave coaxial switches for the aerospace, defense, commercial, Automated Test Equipment ("ATE"), and instrumentation markets. |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 100.00% |  |  |  |  |
HEICO Electronic [Member] | MC2 |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Name of Acquired Entity |  | Mid Continent Controls, Inc. |  |  |  |  |
Description of Acquired Entity |  | MC2 designs and manufacturers proprietary in-cabin power and entertainment components and subsystems for business jets. |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 87.90% |  |  |  |  |
HEICO Electronic [Member] | MC2 | Existing Management [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of interest owned by noncontrolling shareholders |  | 12.10% |  |  |  |  |
HEICO Electronic [Member] | MPS |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Name of Acquired Entity |  | Marway Power Solutions, Inc. |  |  |  |  |
Description of Acquired Entity |  | Marway designs and manufacturers power distribution solutions for mission-critical systems deployed in defense, aerospace, communications, test & measurement, and industrial applications on land, air, and sea. |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 92.50% |  |  |  |  |
HEICO Electronic [Member] | MPS | Existing Management [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of interest owned by noncontrolling shareholders |  | 7.50% |  |  |  |  |
HEICO Electronic [Member] | Flight Microwave |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Name of Acquired Entity |  | Flight Microwave Corporation |  |  |  |  |
Description of Acquired Entity |  | Flight Microwave is a designer and manufacturer of custom high power filters and filter assemblies used in space and defense applications. |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 100.00% |  |  |  |  |
HFSC | Accurate |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Name of Acquired Entity |  | Accurate Metal Machining, Inc. |  |  |  |  |
Description of Acquired Entity |  | Accurate is a manufacturer of high-reliability components and assemblies. |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 96.00% |  |  |  |  |
Amount of contingent purchase consideration, the company could be required to pay |  | $ 13,100 |  |  |  |  |
HFSC | Accurate | Existing Management [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of interest owned by noncontrolling shareholders |  | 4.00% |  |  |  |  |
HFSC | Capewell |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Name of Acquired Entity |  | Aerial Delivery and Descent Devices divisions of Capewell Aerial Systems |  |  |  |  |
Description of Acquired Entity |  | Capewell designs, manufactures and distributes emergency descent devices ("EDDs"), personnel and cargo parachute products, heavy airdrop platforms, and other highly-engineered products. |  |  |  |  |
HFSC | Pioneer |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Name of Acquired Entity |  | Pioneer Industries, LLC |  |  |  |  |
Description of Acquired Entity |  | Pioneer is a specialty distributor of spares for military aviation, marine, and ground platforms. |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 74.00% |  |  |  |  |
Amount of contingent purchase consideration, the company could be required to pay |  | $ 9,800 |  |  |  |  |
HFSC | Pioneer | Existing Management [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of interest owned by noncontrolling shareholders |  | 26.00% |  |  |  |  |

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