SHAREHOLDERS' EQUITY STOCKHOLDERS' EQUITY (Details) (USD $)	3 Months Ended			9 Months Ended
	Jul. 31, 2013	Jan. 31, 2013	Jul. 31, 2012	Jul. 31, 2013	Jul. 31, 2012
Class of Stock [Line Items]
Payments of Ordinary Dividends, Common Stock		$ 116,600,000		$ 120,361,000	$ 5,689,000
Common Stock, Dividends, Per Share, Cash Paid	$ 0.070		$ 0.060	$ 2.270	$ 0.108
Special Dividend [Member]
Class of Stock [Line Items]
Common Stock, Dividends, Per Share, Cash Paid		$ 2.14
Regular Semi-Annual Dividend [Member]
Class of Stock [Line Items]
Common Stock, Dividends, Per Share, Cash Paid		$ 0.06
HEICO Common Stock [Member]
Class of Stock [Line Items]
Stock Repurchased During Period, Shares				29,083
Stock Repurchased During Period, Value				1,300,000
Class A Common Stock [Member]
Class of Stock [Line Items]
Stock Repurchased During Period, Shares				31,972
Stock Repurchased During Period, Value				$ 1,100,000