CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME (USD $) In Thousands	Total	Redeemable Noncontrolling Interests [Member]	Common Stock [Member]	Common Class A [Member]	Capital In Excess Of Par Value [Member]	Deferred Compensation Obligation [Member]	HEICO Stock Held By Irrevocable Trust [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]
Balance at Oct. 31, 2010	$ 554,826	$ 55,048	$ 131	$ 199	$ 227,993	$ 0	$ 0	$ (124)	$ 240,913	$ 85,714
Net income	62,534	8,507	0	0	0	0	0	0	54,306	8,228
Foreign currency translation	1,680	0	0	0	0	0	0	1,680	0	0
Total comprehensive income	64,214	8,507	0	0	0	0	0	1,680	54,306	8,228
Cash dividends	(4,494)	0	0	0	0	0	0	0	(4,494)	0
Five-for-four common stock split	(102)	0	33	50	(83)	0	0	0	(102)	0
Tax benefit from stock option exercises	7,704	0	0	0	7,704	0	0	0	0	0
Stock option compensation expense	1,813	0	0	0	1,813	0	0	0	0	0
Proceeds from stock option exercises	2,088	0	3	1	2,084	0	0	0	0	0
Acquisitions of noncontrolling interests	0	(7,241)	0	0	0	0	0	0	0	0
Distributions to noncontrolling interests	0	(6,328)	0	0	0	0	0	0	0	0
Redemptions of common stock related to stock option exercises	(5,432)	0	0	0	(5,432)	0	0	0	0	0
Noncontrolling interests assumed related to acquisition	0	5,612	0	0	0	0	0	0	0	0
Adjustments to redemption amount of redeemable noncontrolling interests	1,619	(1,619)	0	0	0	0	0	0	1,619	0
Other	0	0	0	0	(1)	0	0	0	0	1
Balance at Jul. 31, 2011	622,236	53,979	167	250	234,078	0	0	1,556	292,242	93,943
Balance at Oct. 31, 2011	620,154	65,430	171	250	226,120	522	(522)	3,033	299,497	91,083
Net income	70,417	6,945	0	0	0	0	0	0	61,356	9,061
Foreign currency translation	(10,264)	0	0	0	0	0	0	(10,264)	0	0
Total comprehensive income	60,153	6,945	0	0	0	0	0	(10,264)	61,356	9,061
Cash dividends	(5,689)	0	0	0	0	0	0	0	(5,689)	0
Five-for-four common stock split	(16)	0	42	63	(105)	0	0	0	(16)	0
Tax benefit from stock option exercises	13,144	0	0	0	13,144	0	0	0	0	0
Stock option compensation expense	2,888	0	0	0	2,888	0	0	0	0	0
Proceeds from stock option exercises	387	0	0	1	386	0	0	0	0	0
Acquisitions of noncontrolling interests	0	(7,616)	0	0	0	0	0	0	0	0
Distributions to noncontrolling interests	0	(6,794)	0	0	0	0	0	0	0	0
Redemptions of common stock related to stock option exercises	(307)	0	0	0	(307)	0	0	0	0	0
Adjustments to redemption amount of redeemable noncontrolling interests	93	(93)	0	0	0	0	0	0	93	0
Other	(228)	1,224	0	0	(1)	0	0	(149)	(78)	0
Balance at Jul. 31, 2012	$ 690,579	$ 59,096	$ 213	$ 314	$ 242,125	$ 522	$ (522)	$ (7,380)	$ 355,163	$ 100,144