NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Numerator:
Net income attributable to HEICO	$ 19,958	$ 19,185
Denominator:
Weighted average common shares outstanding - basic (in shares)	52,951	52,611
Effect of dilutive stock options (in shares)	488	674
Weighted average common shares outstanding - diluted (in shares)	53,439	53,285
Net income per share attributable to HEICO shareholders:
Basic (in dollars per share)	$ 0.38	$ 0.36
Diluted (in dollars per share)	$ 0.37	$ 0.36
Anti-dilutive stock options excluded (in shares)	747	636