CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME (USD $) In Thousands	Total	Redeemable Noncontrolling Interests [Member]	HEICO Common Stock [Member]	Class A Common Stock [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]	Total Shareholders Equity [Member]
Opening Balance at Oct. 31, 2011		$ 65,430	$ 171	$ 250	$ 226,120	$ 522	$ (522)	$ 3,033	$ 299,497	$ 91,083	$ 620,154
Comprehensive income	44,454	4,586	0	0	0	0	0	(4,236)	38,228	5,876	39,868
Cash dividends		0	0	0	0	0	0	0	(2,526)	0	(2,526)
Five-for-four common stock split		0	42	63	(105)	0	0	0	(16)	0	(16)
Tax benefit from stock option exercises		0	0	0	13,148	0	0	0	0	0	13,148
Stock option compensation expense		0	0	0	1,883	0	0	0	0	0	1,883
Proceeds from stock option exercises		0	0	0	275	0	0	0	0	0	275
Acquisitions of noncontrolling interests		(7,616)	0	0	0	0	0	0	0	0	0
Distributions to noncontrolling interests		(5,050)	0	0	0	0	0	0	0	0	0
Redemptions of common stock related to stock option exercises	127	0	0	0	(127)	0	0	0	0	0	(127)
Adjustments to redemption amount of redeemable noncontrolling interests		522	0	0	0	0	0	0	(522)	0	(522)
Other		1,224	0	0	(1)	0	0	(148)	(79)	0	(228)
Ending Balance at Apr. 30, 2012		59,096	213	313	241,193	522	(522)	(1,351)	334,582	96,959	671,909
Opening Balance at Jan. 31, 2012
Comprehensive income	25,416
Adjustments to redemption amount of redeemable noncontrolling interests		(500)
Ending Balance at Apr. 30, 2012		59,096
Opening Balance at Oct. 31, 2012	719,759	67,166	213	315	244,632	823	(823)	(3,572)	375,085	103,086	719,759
Comprehensive income	54,274	4,109	0	0	0	0	0	244	43,658	6,263	50,165
Cash dividends		0	0	0	0	0	0	0	(116,645)	0	(116,645)
Issuance of common stock to HEICO Savings and Investment Plan		0	0	0	1,159	0	0	0	0	0	1,159
Tax benefit from stock option exercises		0	0	0	5,177	0	0	0	0	0	5,177
Stock option compensation expense		0	0	0	2,154	0	0	0	0	0	2,154
Proceeds from stock option exercises		0	1	1	284	0	0	0	0	0	286
Acquisitions of noncontrolling interests		(16,610)	0	0	0	0	0	0	0	0	0
Distributions to noncontrolling interests		(4,457)	0	0	0	0	0	0	0	0	0
Redemptions of common stock related to stock option exercises	2,364	0	0	0	(2,364)	0	0	0	0	0	(2,364)
Adjustments to redemption amount of redeemable noncontrolling interests		1,010	0	0	0	0	0	0	(1,010)	0	(1,010)
Deferred compensation obligation		0	0	0	0	105	(105)	0	0	0	0
Other		0	0	0	1	0	0	1	0	(1)	1
Ending Balance at Apr. 30, 2013	658,682	51,218	214	316	251,043	928	(928)	(3,327)	301,088	109,348	658,682
Opening Balance at Jan. 31, 2013
Comprehensive income	26,056
Adjustments to redemption amount of redeemable noncontrolling interests		200
Ending Balance at Apr. 30, 2013	$ 658,682	$ 51,218