Entity Tax Identification Number Entity Tax Identification Number Entity File Number Entity File Number Legal Entity [Axis] Legal Entity [Axis] Cover [Abstract] Cover [Abstract] Title of 12(b) Security Title of 12(b) Security Entities [Table] Entities [Table] Local Phone Number Local Phone Number Class of Stock [Domain] Class of Stock [Domain] Entity Address, Address Line One Entity Address, Address Line One Soliciting Material Soliciting Material Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Entity Address, State or Province Entity Address, State or Province Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Information [Line Items] Entity Information [Line Items] Written Communications Written Communications Trading Symbol Trading Symbol City Area Code City Area Code Heico Common Stock [Member] Heico Common Stock [Member] Heico Common Stock [Member] Document Information [Table] Document Information [Table] Common Class A [Member] Common Class A [Member] Document Period End Date Document Period End Date Entity Address, City or Town Entity Address, City or Town Amendment Flag Amendment Flag Pre-commencement Issuer Tender Offer Pre-commencement Issuer Tender Offer Document [Domain] Document [Domain] Entity [Domain] Entity [Domain] Security Exchange Name Security Exchange Name Document Information, Document [Axis] Document Information, Document [Axis] Document Information [Line Items] Document Information [Line Items] Class of Stock [Axis] Class of Stock [Axis] Document Type Document Type Pre-commencement Tender Offer Pre-commencement Tender Offer Entity Central Index Key Entity Central Index Key Entity Emerging Growth Company Entity Emerging Growth Company