CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - UNAUDITED (USD $) In Thousands	Total	Redeemable Noncontrolling Interests [Member]	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]
Balance at Oct. 31, 2012		$ 67,166	$ 213	$ 315	$ 244,632	$ 823	$ (823)	$ (3,572)	$ 375,085	$ 103,086	$ 719,759
Comprehensive income	28,218	2,168	0	0	0	0	0	3,234	19,958	2,858	26,050
Cash dividends		0	0	0	0	0	0	0	(116,645)	0	(116,645)
Share-based compensation expense		0	0	0	1,094	0	0	0	0	0	1,094
Proceeds from stock option exercises		0	1	1	284	0	0	0	0	0	286
Tax benefit from stock option exercises		0	0	0	5,170	0	0	0	0	0	5,170
Redemptions of common stock related to share-based compensation	2,364	0	0	0	(2,364)	0	0	0	0	0	(2,364)
Distributions to noncontrolling interests		(2,310)	0	0	0	0	0	0	0	0	0
Acquisitions of noncontrolling interests		(16,610)	0	0	0	0	0	0	0	0	0
Adjustments to redemption amount of redeemable noncontrolling interests		804	0	0	0	0	0	0	(804)	0	(804)
Deferred compensation obligation		0	0	0	0	105	(105)	0	0	0	0
Other		0	0	0	1	0	0	0	(1)	(2)	(2)
Balance at Jan. 31, 2013		51,218	214	316	248,817	928	(928)	(338)	277,593	105,942	632,544
Balance at Oct. 31, 2013	723,235	59,218	268	396	255,889	1,138	(1,138)	144	349,649	116,889	723,235
Comprehensive income	30,100	1,498	0	0	0	0	0	(2,462)	27,455	3,609	28,602
Cash dividends		0	0	0	0	0	0	0	(27,225)	0	(27,225)
Issuance of common stock to HEICO Savings and Investment Plan		0	0	0	683	0	0	0	0	0	683
Share-based compensation expense		0	0	0	2,600	0	0	0	0	0	2,600
Proceeds from stock option exercises		0	0	0	158	0	0	0	0	0	158
Tax benefit from stock option exercises		0	0	0	93	0	0	0	0	0	93
Redemptions of common stock related to share-based compensation	273	0	0	0	(273)	0	0	0	0	0	(273)
Distributions to noncontrolling interests		(1,608)	0	0	0	0	0	0	0	0	0
Acquisitions of noncontrolling interests		(1,243)	0	0	0	0	0	0	0	0	0
Adjustments to redemption amount of redeemable noncontrolling interests		138	0	0	0	0	0	0	(138)	0	(138)
Other		0	0	0	5	0	0	0	0	1	6
Balance at Jan. 31, 2014	$ 727,741	$ 58,003	$ 268	$ 396	$ 259,155	$ 1,138	$ (1,138)	$ (2,318)	$ 349,741	$ 120,499	$ 727,741