Subsequent Events (Details) - Subsequent Event [Member]	1 Months Ended
Aug. 27, 2020	Aug. 01, 2020
ID and TS [Member] \| Noncontrolling Holders of a Subsidiary of Heico Electronics [Member]
Subsequent Event [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		25.00%
ID and TS [Member] \| Existing Management [Member]
Subsequent Event [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		10.01%
ID and TS [Member] \| Electronic Technologies Group [Member]
Subsequent Event [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired		75.00%
Name of Acquired Entity	Intelligent Devices, Inc. ("ID") and Transformational Security, LLC ("TS")
Description of Acquired Entity	ID and TS design, develop and manufacturer state-of-the-art Technical Surveillance Countermeasures (TSCM) equipment used to protect critical spaces from exploitation via wireless transmissions, technical surveillance and listening devices.
Connect Tech [Member] \| Electronic Technologies Group [Member]
Subsequent Event [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired		89.99%
Name of Acquired Entity	Connect Tech Inc. ("Connect Tech")
Description of Acquired Entity	Connect Tech designs and manufacturers rugged, small-form-factor embedded computing solutions. Connect Tech's components are designed for very harsh environments and are primarily used in rugged commercial and industrial, aerospace and defense, transportation, and smart energy applications.

With respect to a business combination completed during the period, this element provides a description of the business, other than the name, which may include the industry, size, products and other important information.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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