DOCUMENT AND ENTITY INFORMATION	3 Months Ended
	Jan. 31, 2012	Feb. 23, 2012 Common Stock [Member]	Feb. 23, 2012 Class A Common Stock [Member]
Entity Registrant Name	HEICO CORP
Entity Central Index Key	0000046619
Current Fiscal Year End Date	--10-31
Entity Filer Category	Large Accelerated Filer
Trading Symbol	hei
Entity Common Stock, Shares Outstanding		17,057,339	25,052,644
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jan. 31, 2012
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2012