HEICO (HEI) 10-Q 24 May 23 2022 Q2 Quarterly report Financial data

DOCUMENT AND ENTITY INFORMATION

DOCUMENT AND ENTITY INFORMATION - $ / shares	6 Months Ended
	Apr. 30, 2023	May 22, 2023
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity Shell Company	false
Local Phone Number	987-4000
Entity File Number	001-04604
City Area Code	954
Entity Interactive Data Current	Yes
Amendment Flag	false
Document Period End Date	Apr. 30, 2023
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2022
Entity Current Reporting Status	Yes
Entity Information [Line Items]
Entity Incorporation, State or Country Code	FL
Entity Registrant Name	HEICO CORPORATION
Zip Code	33021
Entity Central Index Key	0000046619
Entity Tax Identification Number	65-0341002
Address	3000 Taft Street
Entity City	Hollywood
State	FL
Current Fiscal Year End Date	--10-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Heico Common Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $.01 par value per share
Security Exchange Name	NYSE
Trading Symbol	HEI
Entity Common Stock, Shares Outstanding		54,705,934
Entity Common Stock Par Value	$ 0.01
Common Class A [Member]
Entity Information [Line Items]
Title of 12(b) Security	Class A Common Stock, $.01 par value per share
Security Exchange Name	NYSE
Trading Symbol	HEI.A
Entity Common Stock, Shares Outstanding		82,298,200
Entity Common Stock Par Value	$ 0.01

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - UNAUDITED - USD ($) shares in Thousands, $ in Thousands	Apr. 30, 2023	Oct. 31, 2022
Current assets:
Cash and cash equivalents	$ 127,161	$ 139,504
Accounts receivable, net	361,057	294,848
Contract assets	103,448	93,978
Inventories, net	721,569	582,471
Prepaid expenses and other current assets	53,404	41,929
Total current assets	1,366,639	1,152,730
Property, plant and equipment, net	273,856	225,879
Goodwill	2,031,235	1,672,425
Intangible assets, net	844,319	733,327
Other assets	354,150	311,135
Total assets	4,870,199	4,095,496
Current liabilities:
Debt, Current	18,860	1,654
Trade accounts payable	147,708	116,551
Accrued expenses and other current liabilities	296,159	290,199
Income taxes payable	4,101	12,455
Total current liabilities	466,828	420,859
Long-term debt, net of current maturities	735,779	288,620
Deferred income taxes	94,468	71,162
Other long-term liabilities	367,624	338,948
Total liabilities	1,664,699	1,119,589
Commitments and contingencies
Redeemable noncontrolling interests	345,833	327,601
Shareholders' equity:
Preferred Stock, $.01 par value per share; 10,000 shares authorized; none issued	0	0
Capital in excess of par value	398,991	397,337
Deferred compensation obligation	6,171	5,297
HEICO stock held by irrevocable trust	(6,171)	(5,297)
Accumulated other comprehensive loss	(17,626)	(46,499)
Retained earnings	2,435,155	2,253,932
Total HEICO shareholders' equity	2,817,890	2,606,136
Noncontrolling interests	41,777	42,170
Total shareholders' equity	2,859,667	2,648,306
Total liabilities and equity	$ 4,870,199	$ 4,095,496
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	10,000	10,000
Preferred Stock, Shares Issued	0	0
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	150,000	150,000
Common Stock, Shares, Issued	54,701	54,519
Common Stock, Shares, Outstanding	54,701	54,519
Class A Common Stock [Member]
Shareholders' equity:
Common Stock	$ 823	$ 821
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	150,000	150,000
Common Stock, Shares, Issued	82,278	82,093
Common Stock, Shares, Outstanding	82,278	82,093
Heico Common Stock [Member]
Shareholders' equity:
Common Stock	$ 547	$ 545

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS - UNAUDITED [PARENTHETICAL] - $ / shares shares in Thousands	Apr. 30, 2023	Oct. 31, 2022
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	10,000	10,000
Preferred Stock, Shares Issued	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	150,000	150,000
Common stock, shares issued	54,701	54,519
Common stock, shares outstanding	54,701	54,519
Class A Common Stock [Member]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	150,000	150,000
Common stock, shares issued	82,278	82,093
Common stock, shares outstanding	82,278	82,093

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - UNAUDITED - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Net sales	$ 687,841	$ 538,813	$ 1,308,756	$ 1,029,156
Operating costs and expenses:
Cost of sales	421,329	327,584	798,445	627,717
Selling, general and administrative expenses	109,422	88,452	223,787	179,840
Total operating costs and expenses	530,751	416,036	1,022,232	807,557
Operating income	157,090	122,777	286,524	221,599
Interest expense	(11,373)	(979)	(17,441)	(1,775)
Other (expense) income	343	314	982	540
Income before income taxes and noncontrolling interests	146,060	122,112	270,065	220,364
Income tax expense	31,000	29,000	52,000	33,000
Net income from consolidated operations	115,060	93,112	218,065	187,364
Less: Net income attributable to noncontrolling interests	9,940	8,102	19,918	15,433
Net income attributable to HEICO	$ 105,120	$ 85,010	$ 198,147	$ 171,931
Net income per share attributable to HEICO shareholders:
Basic (in dollars per share)	$ 0.77	$ 0.63	$ 1.45	$ 1.27
Diluted (in dollars per share)	$ 0.76	$ 0.62	$ 1.43	$ 1.25
Weighted average number of common shares outstanding:
Basic (in shares)	136,916	135,891	136,786	135,763
Diluted (in shares)	138,600	137,867	138,590	137,916

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Net income from consolidated operations	$ 115,060	$ 93,112	$ 218,065	$ 187,364
Other comprehensive income (loss):
Foreign currency translation adjustments	1,994	(14,277)	30,379	(23,028)
Amortization of unrealized loss on defined benefit pension plan, net of tax	13	22	28	33
Total other comprehensive income (loss)	2,007	(14,255)	30,407	(22,995)
Comprehensive income from consolidated operations	117,067	78,857	248,472	164,369
Less: Comprehensive income attributable to noncontrolling interests	9,940	8,102	19,918	15,433
Less: Foreign currency translation adjustments attributable to noncontrolling interests	275	(663)	1,534	(993)
Comprehensive income attributable to noncontrolling interests	10,215	7,439	21,452	14,440
Comprehensive income attributable to HEICO	$ 106,852	$ 71,418	$ 227,020	$ 149,929

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME - UNAUDITED - USD ($) $ in Thousands	Total	Redeemable Noncontrolling Interests [Member]	Common Stock [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]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total Shareholders Equity [Member]
Beginning Balance at Oct. 31, 2021			$ 543	$ 812	$ 320,747	$ 5,297	$ (5,297)	$ (8,552)	$ 1,949,521	$ 33,868	$ 2,296,939
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 149,929							(22,002)	171,931
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	14,440	$ 9,262								5,178
Comprehensive income	164,369										155,107
Cash dividends									(12,227)		(12,227)
Issuance of common stock to Savings and Investment Plan					7,739						7,739
Share-based compensation expense					6,855						6,855
Proceeds from stock option exercises			3	3							1,610
Proceeds from stock option exercises, Adjustment to Additional Paid in Capital					1,604
Stock Redeemed or Called During Period, Value			(1)	(1)	(23,690)						(23,692)
Distributions to noncontrolling interests		(9,968)								(608)	(608)
Adjustments to redemption amount of redeemable noncontrolling interests		9,047							(9,047)		(9,047)
Adjustments to Additional Paid in Capital, Other					(2,202)						(2,202)
Ending Balance at Apr. 30, 2022			545	814	311,053	5,297	(5,297)	(30,554)	2,100,178	38,438	2,420,474
Starting Balance, Redeemable Noncontrolling Interests at Oct. 31, 2021		252,587
Increase (Decrease) in Temporary Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	14,440	9,262								5,178
Noncontrolling Interest, Increase from Business Combination	39,235
Distributions to noncontrolling interests		(9,968)								(608)	(608)
Adjustments to redemption amount of redeemable noncontrolling interests		9,047							(9,047)		(9,047)
Temporary Equity, Other Changes	3,764
Ending Balance, Redeemable Noncontrolling Interests at Apr. 30, 2022		303,927
Beginning Balance at Jan. 31, 2022			545	814	302,104	5,297	(5,297)	(16,962)	2,018,990	36,565	2,342,056
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	71,418							(13,592)	85,010
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	7,439	5,121								2,318
Comprehensive income	78,857										73,736
Issuance of common stock to Savings and Investment Plan					6,069						6,069
Share-based compensation expense					3,241						3,241
Proceeds from stock option exercises											841
Proceeds from stock option exercises, Adjustment to Additional Paid in Capital					841
Stock Redeemed or Called During Period, Value					(69)						(69)
Distributions to noncontrolling interests		(4,085)								(445)	(445)
Adjustments to redemption amount of redeemable noncontrolling interests		3,822							(3,822)		(3,822)
Adjustments to Additional Paid in Capital, Other					(1,133)						(1,133)
Ending Balance at Apr. 30, 2022			545	814	311,053	5,297	(5,297)	(30,554)	2,100,178	38,438	2,420,474
Starting Balance, Redeemable Noncontrolling Interests at Jan. 31, 2022		258,289
Increase (Decrease) in Temporary Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	7,439	5,121								2,318
Noncontrolling Interest, Increase from Business Combination	39,063
Distributions to noncontrolling interests		(4,085)								(445)	(445)
Adjustments to redemption amount of redeemable noncontrolling interests		3,822							(3,822)		(3,822)
Temporary Equity, Other Changes	1,717
Ending Balance, Redeemable Noncontrolling Interests at Apr. 30, 2022		303,927
Beginning Balance at Oct. 31, 2022	2,648,306		545	821	397,337	5,297	(5,297)	(46,499)	2,253,932	42,170	2,648,306
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	227,020							28,873	198,147
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	21,452	15,356								6,096
Comprehensive income	248,472										233,116
Cash dividends									(13,668)		(13,668)
Issuance of common stock to Savings and Investment Plan					7,760						7,760
Share-based compensation expense					6,055						6,055
Proceeds from stock option exercises			2	2							4,074
Proceeds from stock option exercises, Adjustment to Additional Paid in Capital					4,070
Stock Redeemed or Called During Period, Value					(14,811)						(14,811)
Distributions to noncontrolling interests		(16,161)								(6,489)	(6,489)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests		(1,059)			(1,674)						(1,674)
Adjustments to redemption amount of redeemable noncontrolling interests		3,103							(3,103)		(3,103)
Value of Stock Issued During Period for Deferred Compensation Obligation						874
Value of Stock Held During Period in Irrevocable Trust for Deferred Compensation Obligation							(874)
Adjustments to Additional Paid in Capital, Other					254
Stockholders' Equity, Other									(153)		101
Ending Balance at Apr. 30, 2023	2,859,667		547	823	398,991	6,171	(6,171)	(17,626)	2,435,155	41,777	2,859,667
Starting Balance, Redeemable Noncontrolling Interests at Oct. 31, 2022	327,601	327,601
Increase (Decrease) in Temporary Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	21,452	15,356								6,096
Noncontrolling Interest, Increase from Business Combination	14,642
Distributions to noncontrolling interests		(16,161)								(6,489)	(6,489)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests		(1,059)			(1,674)						(1,674)
Adjustments to redemption amount of redeemable noncontrolling interests		3,103							(3,103)		(3,103)
Temporary Equity, Other Changes	2,351
Ending Balance, Redeemable Noncontrolling Interests at Apr. 30, 2023	345,833	345,833
Beginning Balance at Jan. 31, 2023			547	822	388,603	6,171	(6,171)	(19,358)	2,328,523	45,037	2,744,174
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	106,852							1,732	105,120
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	10,215	7,376								2,839
Comprehensive income	117,067										109,691
Issuance of common stock to Savings and Investment Plan					5,796						5,796
Share-based compensation expense					3,243						3,243
Proceeds from stock option exercises				1							1,229
Proceeds from stock option exercises, Adjustment to Additional Paid in Capital					1,228
Stock Redeemed or Called During Period, Value					(6)						(6)
Distributions to noncontrolling interests		(5,260)								(6,099)	(6,099)
Adjustments to redemption amount of redeemable noncontrolling interests		(1,513)							1,513		1,513
Adjustments to Additional Paid in Capital, Other					127
Stockholders' Equity, Other									(1)		126
Ending Balance at Apr. 30, 2023	2,859,667		$ 547	$ 823	$ 398,991	$ 6,171	$ (6,171)	$ (17,626)	2,435,155	41,777	2,859,667
Starting Balance, Redeemable Noncontrolling Interests at Jan. 31, 2023		340,287
Increase (Decrease) in Temporary Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	10,215	7,376								2,839
Noncontrolling Interest, Increase from Business Combination	2,592
Distributions to noncontrolling interests		(5,260)								$ (6,099)	(6,099)
Adjustments to redemption amount of redeemable noncontrolling interests		(1,513)							$ 1,513		$ 1,513
Temporary Equity, Other Changes	2,351
Ending Balance, Redeemable Noncontrolling Interests at Apr. 30, 2023	$ 345,833	$ 345,833

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME - UNAUDITED [PARENTHETICAL] - $ / shares	6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Cash dividends per share (in dollars per share)	$ 0.10	$ 0.09

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED - USD ($) $ in Thousands	6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Operating Activities:
Net income from consolidated operations	$ 218,065	$ 187,364
Adjustments to reconcile net income from consolidated operations to net cash provided by (used in) operating activities:
Depreciation and amortization	56,784	46,707
Employer contributions to HEICO Savings and Investment Plan	6,533	5,364
Share-based compensation expense	6,055	6,855
Change in value of contingent consideration	1,842	(1,773)
Business Combination, Reversal of Remaining Contingent Consideration, Liability	(9,057)	0
Payment for Contingent Consideration Liability, Operating Activities	(6,299)	0
Deferred income tax provision (benefit)	(9,596)	2,080
Changes in operating assets and liabilities, net of acquisitions:
Change in accounts receivable	(21,222)	(20,263)
Change in contract assets	(9,267)	1,778
Change in inventories	(75,251)	(42,766)
Change in prepaid expenses and other current assets	1,738	(8,974)
Change in trade accounts payable	6,797	8,137
Change in accrued expenses and other current liabilities	(2,671)	(15,946)
Change in income taxes payable	(13,824)	(9,343)
Change in other long-term liabilities and assets related to HEICO Leadership Compensation Plan	10,563	13,356
Other	(6,754)	2,177
Net cash provided by operating activities	154,436	174,753
Investing Activities:
Acquisitions, net of cash acquired	(524,231)	(105,533)
Capital expenditures	(21,921)	(16,211)
Net Investment Related to Deferred Compensation Plan	(14,000)	(11,700)
Other	362	(10,511)
Net cash used in investing activities	(559,790)	(143,955)
Financing Activities:
Proceeds from Long-term Lines of Credit	556,000	93,000
Payments on revolving credit facility	(108,000)	(65,000)
Distributions to noncontrolling interests	(22,650)	(10,576)
Common Stock Issued Repurchased and Retired Related To Stock Option Exercises	(14,811)	(23,692)
Cash dividends paid	(13,668)	(12,227)
Payment for Contingent Consideration Liability, Financing Activities	(12,610)	0
Payments to Noncontrolling Interests	(2,733)	0
Proceeds from stock option exercises	4,074	1,610
Other	3,163	(1,220)
Net cash (used in) provided by financing activities	388,765	(18,105)
Effect of exchange rate changes on cash	4,246	(3,673)
Net (decrease) increase in cash and cash equivalents	(12,343)	9,020
Cash and cash equivalents at beginning of year	139,504	108,298
Cash and cash equivalents at end of period	$ 127,161	$ 117,318

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	6 Months Ended
	Apr. 30, 2023
Accounting Policies [Abstract]
Summary of Significant Accounting Policies [Text Block]	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The accompanying unaudited condensed consolidated financial statements of HEICO Corporation and its subsidiaries (collectively, “HEICO,” or the “Company”) have been prepared in conformity with accounting principles generally accepted in the United States of America for interim financial information and in accordance with the instructions to Form 10-Q. Therefore, the condensed consolidated financial statements do not include all information and footnotes normally included in annual consolidated financial statements and should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended October 31, 2022. The October 31, 2022 Condensed Consolidated Balance Sheet has been derived from the Company’s audited consolidated financial statements. In the opinion of management, the unaudited condensed consolidated financial statements contain all adjustments (consisting principally of normal recurring accruals) necessary for a fair presentation of the condensed consolidated balance sheets, statements of operations, statements of comprehensive income, statements of shareholders' equity and statements of cash flows for such interim periods presented. The results of operations for the six months ended April 30, 2023 are not necessarily indicative of the results which may be expected for the entire fiscal year. The Company has two operating segments: the Flight Support Group (“FSG”), consisting of HEICO Aerospace Holdings Corp. and HEICO Flight Support Corp. ("HFSC") and their respective subsidiaries; and the Electronic Technologies Group (“ETG”), consisting of HEICO Electronic Technologies Corp. and its subsidiaries. Although the Company has largely emerged from the COVID-19 pandemic, HEICO’s results of operations in fiscal 2023 continue to reflect some of the pandemic’s lingering effects, including its impact on the Company's supply chain. Despite the aforementioned, the Company experienced continued improvement in operating results in the first six months and second quarter of fiscal 2023 as compared to the first six months and second quarter of fiscal 2022 principally reflecting improved demand for its commercial aerospace products and services. The FSG has reported eleven consecutive quarters of sequential growth in net sales and operating income resulting from commercial air travel recovery in certain domestic travel markets, moderated by a slower recovery in international travel markets. New Accounting Pronouncement In October 2021, the Financial Accounting Standards Board issued Accounting Standards Update ("ASU") 2021-08, "Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers," which requires contract assets and contract liabilities acquired in a business combination to be recognized and measured by the

ACQUISITIONS

ACQUISITIONS	6 Months Ended
	Apr. 30, 2023
Business Combination and Asset Acquisition [Abstract]
Acquisitions [Text Block]	ACQUISITIONS In March 2023, the Company, through a subsidiary of HEICO Electronic, entered into an exclusive license and acquired certain assets for the Aircraft Emergency Locator Transmitter (“ELT”) product line from Honeywell International. ELTs provide critical emergency transmission signals in the event of aircraft impact on land or water to enable first responders to locate the aircraft. The transaction provides the HEICO Electronic subsidiary with all rights to produce, sell and repair both fixed and portable Honeywell ELTs, as well as various support equipment. The purchase price of this acquisition was paid in cash using cash provided by operating activities and is not material or significant to the Company's condensed consolidated financial statements. On January 5, 2023, the Company, through HEICO Electronic, acquired 93.69% of the outstanding common stock and all of the preferred stock of Exxelia International SAS (“Exxelia”). Exxelia designs, manufactures and sells high reliability (“Hi-Rel”), complex, passive electronic components and rotary joint assemblies for mostly aerospace and defense applications, in addition to other high-end applications, such as medical and energy uses, including emerging “clean energy” and electrification applications. The Company believes that this acquisition will further HEICO's strategy of expanding its already wide range of mission-critical and Hi-Rel components for the most demanding applications, as well as provide HEICO with added broad geographic and product diversity, including in the important European market. The remaining 6.31% interest is owned by certain members of Exxelia's management team (see Note 3, Selected Financial Statement Information - Redeemable Noncontrolling Interests, for additional information). Additionally, as a result of this acquisition, the Company also obtained a 90% ownership interest in Alcon Electronics Pvt. Ltd. (“Alcon”), which is an existing subsidiary of Exxelia. The remaining 10% interest continues to be owned by a certain member of Alcon’s management team (See Note 3, Selected Financial Statement Information – Redeemable Noncontrolling Interests, for additional information). The purchase price of this acquisition was paid in cash, using proceeds from the Company's revolving credit facility. The following table summarizes the total consideration for the acquisition of Exxelia (in thousands): Cash paid $515,785 Less: cash acquired (14,234) Total consideration paid, net $501,551 As noted above, the Company acquired all of the preferred stock of Exxelia. Pursuant to the terms of the acquisition, Exxelia’s preferred stock accrues dividends at 5.18% per annum. Additionally, in connection with the acquisition, HEICO issued Exxelia a ten-year, €150 million note, which accrues interest at 4.7% per annum on the principal outstanding. The Company records foreign currency transaction adjustments on the note receivable within selling, general and administrative ("SG&A") expenses in its Condensed Consolidated Statements of Operations. The following table summarizes the allocation of the total consideration for the acquisition of Exxelia to the estimated fair values of the tangible and identifiable intangible assets acquired and liabilities and noncontrolling interests assumed (in thousands): Assets acquired: Goodwill $332,033 Customer relationships 64,935 Intellectual property 44,044 Trade name 21,703 Inventories 55,922 Property, plant and equipment 42,165 Accounts receivable 41,113 Other assets 11,254 Total assets acquired, excluding cash 613,169 Liabilities assumed: Deferred income taxes 31,975 Accounts payable 22,369 Accrued expenses 18,383 Other liabilities 24,231 Total liabilities assumed 96,958 Noncontrolling interests in consolidated subsidiaries 14,660 Net assets acquired, excluding cash $501,551 The allocation of the total consideration to the tangible and identifiable intangible assets acquired and liabilities and noncontrolling interests assumed is preliminary until the Company obtains final information regarding their fair values. The primary items that generated the goodwill recognized were the premiums paid by the Company for the future earnings potential of Exxelia and the value of its assembled workforce that do not qualify for separate recognition, however, benefit both the Company and the noncontrolling interest holders. The fair value of the noncontrolling interests were determined based on the consideration paid by the Company for its controlling ownership interest adjusted for a lack of control that a market participant would consider when estimating the fair value of the noncontrolling interest. The weighted-average amortization periods of the customer relationships, intellectual property and trade names acquired are 15 years, 15 years and indefinite, respectively. Acquisition costs associated with the purchase of Exxelia totaled $5.2 million for the six months ended April 30, 2023 and were recorded as a component of SG&A expenses in the Company's Condensed Consolidated Statement of Operations. The operating results of Exxelia were included in the Company’s results of operations from the effective acquisition date. The Company's consolidated net sales for the six and three months ended April 30, 2023, includes approximately $69.6 million and $54.6 million, respectively, from the acquisition of Exxelia. Net income attributable to HEICO for the six and three months ended April 30, 2023, was not materially impacted by the acquisition of Exxelia. The following table presents unaudited pro forma financial information for the six and three months ended April 30, 2023 and April 30, 2022 as if the acquisition of Exxelia had occurred as of November 1, 2021 (in thousands, except per share data): Six months ended April 30, Three months ended April 30, 2023 2022 2023 2022 Net sales $1,348,159 $1,125,052 $687,841 $586,039 Net income from consolidated operations $234,185 $173,002 $115,568 $85,883 Net income attributable to HEICO $213,969 $157,855 $105,544 $77,901 Net income per share attributable to HEICO shareholders: Basic $1.56 $1.16 $.77 $.57 Diluted $1.54 $1.14 $.76 $.57

SELECTED FINANCIAL STATEMENT IN

SELECTED FINANCIAL STATEMENT INFORMATION	6 Months Ended
	Apr. 30, 2023
Selected Financial Statement Information [Abstract]
Selected Financial Statement Information [Text Block]	SELECTED FINANCIAL STATEMENT INFORMATION Accounts Receivable (in thousands) April 30, 2023 October 31, 2022 Accounts receivable $371,708 $303,181 Less: Allowance for doubtful accounts (10,651) (8,333) Accounts receivable, net $361,057 $294,848 Inventories (in thousands) April 30, 2023 October 31, 2022 Finished products $353,668 $285,024 Work in process 69,700 59,739 Materials, parts, assemblies and supplies 298,201 237,708 Inventories, net of valuation reserves $721,569 $582,471 Property, Plant and Equipment (in thousands) April 30, 2023 October 31, 2022 Land $19,232 $17,579 Buildings and improvements 168,689 148,598 Machinery, equipment and tooling 360,894 322,252 Construction in progress 23,578 14,533 572,393 502,962 Less: Accumulated depreciation and amortization (298,537) (277,083) Property, plant and equipment, net $273,856 $225,879 Accrued Customer Rebates and Credits The aggregate amount of accrued customer rebates and credits included within accrued expenses and other current liabilities in the accompanying Condensed Consolidated Balance Sheets was $19.5 million as of April 30, 2023 and $17.9 million as of October 31, 2022. The total customer rebates and credits deducted within net sales for the six months ended April 30, 2023 and 2022 was $4.2 million and $3.7 million, respectively. The total customer rebates and credits deducted within net sales for the three months ended April 30, 2023 and 2022 was $2.0 million and $2.0 million, respectively. Research and Development Expenses The amount of new product research and development ("R&D") expenses included in cost of sales for the six and three months ended April 30, 2023 and 2022 is as follows (in thousands): Six months ended April 30, Three months ended April 30, 2023 2022 2023 2022 R&D expenses $43,134 $37,147 $22,896 $18,751 Redeemable Noncontrolling Interests The holders of equity interests in certain of the Company's subsidiaries have rights ("Put Rights") that may be exercised on varying dates causing the Company to purchase their equity interests through fiscal 2032. The Put Rights, all of which relate either to common shares or membership interests in limited liability companies, provide that the cash consideration to be paid for their equity interests (the "Redemption Amount") be at fair value or a formula that management intended to reasonably approximate fair value based solely on a multiple of future earnings over a measurement period. Management's estimate of the aggregate Redemption Amount of all Put Rights that the Company could be required to pay is as follows (in thousands): April 30, 2023 October 31, 2022 Redeemable at fair value $300,756 $300,693 Redeemable based on a multiple of future earnings 45,077 26,908 Redeemable noncontrolling interests $345,833 $327,601 As discussed in Note 2, Acquisitions, the Company, through HEICO Electronic, acquired 93.69% of the common stock of Exxelia in January 2023. During the second quarter of fiscal 2023, the Company sold an additional 2.72% of the common stock of Exxelia to its existing noncontrolling interest holders and certain members of Exxelia's management team, which decreased the Company's ownership interest in the common stock of the subsidiary to 90.97%. As part of the liquidity agreement, the noncontrolling interest holders have the right to cause the Company to purchase their equity interest beginning in fiscal 2028, or sooner under certain conditions, and the Company has the right to purchase the same equity interest beginning in the same period. As discussed in Note 2, Acquisitions, the Company, as a result of its acquisition of Exxelia, acquired 90% of the stock of Alcon in January 2023. As part of the shareholders' agreement, the noncontrolling interest holder has the right to cause the Company to purchase their equity interest beginning in fiscal 2025, or sooner under certain conditions, and the Company has the right to purchase the same equity interest beginning in the same period. During fiscal 2022, the holder of a 19.9% noncontrolling equity interest in a subsidiary of the FSG that was acquired in fiscal 2015 exercised their option to cause the Company to purchase their noncontrolling interest over a four-year period ending in fiscal 2026. Accordingly, the Company acquired one-fourth of such interest in December 2022, which increased the Company's ownership interest in the subsidiary to 85.1%. Accumulated Other Comprehensive Loss Changes in the components of accumulated other comprehensive loss for the six months ended April 30, 2023 are as follows (in thousands): Foreign Currency Translation Defined Benefit Pension Plan Accumulated Balances as of October 31, 2022 ($45,369) ($1,130) ($46,499) Unrealized gain 28,845 — 28,845 Amortization of unrealized loss — 28 28 Balances as of April 30, 2023 ($16,524) ($1,102) ($17,626)

GOODWILL AND OTHER INTANGIBLE A

GOODWILL AND OTHER INTANGIBLE ASSETS	6 Months Ended
	Apr. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	GOODWILL AND OTHER INTANGIBLE ASSETS Changes in the carrying amount of goodwill by operating segment for the six months ended April 30, 2023 are as follows (in thousands): Segment Consolidated Totals FSG ETG Balances as of October 31, 2022 $561,961 $1,110,464 $1,672,425 Goodwill acquired — 340,173 340,173 Foreign currency translation adjustments 4,242 12,559 16,801 Adjustments to goodwill (955) 2,791 1,836 Balances as of April 30, 2023 $565,248 $1,465,987 $2,031,235 The goodwill acquired pertains to the fiscal 2023 acquisitions described in Note 2, Acquisitions, and represents the residual value after the allocation of the total consideration to the tangible and identifiable intangible assets acquired and liabilities and noncontrolling interests assumed. The Company estimates that $21 million of the goodwill acquired in fiscal 2023 will be deductible for income tax purposes. Foreign currency translation adjustments are included in other comprehensive income (loss) in the Company's Condensed Consolidated Statements of Comprehensive Income. The adjustments to goodwill represent immaterial measurement period adjustments to the purchase consideration allocation of certain fiscal 2022 acquisitions. Identifiable intangible assets consist of the following (in thousands): As of April 30, 2023 As of October 31, 2022 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortizing Assets: Customer relationships $611,547 ($229,884) $381,663 $539,529 ($208,127) $331,402 Intellectual property 333,249 (111,233) 222,016 284,171 (98,983) 185,188 Other 8,681 (7,191) 1,490 8,700 (7,017) 1,683 953,477 (348,308) 605,169 832,400 (314,127) 518,273 Non-Amortizing Assets: Trade names 239,150 — 239,150 215,054 — 215,054 $1,192,627 ($348,308) $844,319 $1,047,454 ($314,127) $733,327 The increase in the gross carrying amount of customer relationships, intellectual property and trade names as of April 30, 2023 compared to October 31, 2022 principally relates to such intangible assets recognized in connection with the fiscal 2023 acquisitions (see Note 2, Acquisitions). Amortization expense related to intangible assets for the six months ended April 30, 2023 and 2022 was $36.9 million and $30.2 million, respectively. Amortization expense for the three months ended April 30, 2023 and 2022 was $19.1 million and $15.2 million, respectively. Amortization expense for the remainder of fiscal 2023 is estimated to be $37.5 million. Amortization expense for each of the next five fiscal years and thereafter is estimated to be $71.5 million in fiscal 2024, $66.7 million in fiscal 2025, $61.8 million in fiscal 2026, $58.5 million in fiscal 2027, $54.1 million in fiscal 2028, and $255.1 million thereafter.

LONG-TERM DEBT

LONG-TERM DEBT	6 Months Ended
	Apr. 30, 2023
Debt Disclosure [Abstract]
Long-term Debt [Text Block]	SHORT-TERM AND LONG-TERM DEBT A subsidiary of the Company acquired in the first quarter of fiscal 2023 has a short-term borrowing arrangement with a balance of $15.1 million as of the acquisition date and $17.2 million as of April 30, 2023. Long-term debt consists of the following (in thousands): April 30, 2023 October 31, 2022 Borrowings under revolving credit facility $723,000 $275,000 Finance leases and note payable 14,397 15,274 737,397 290,274 Less: Current maturities of long-term debt (1,618) (1,654) $735,779 $288,620

REVENUE

REVENUE	6 Months Ended
	Apr. 30, 2023
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	REVENUE Contract Balances Contract assets (unbilled receivables) represent revenue recognized on contracts using an over-time recognition model in excess of amounts invoiced to the customer. Contract liabilities (deferred revenue) represent customer advances and billings in excess of revenue recognized and are included within accrued expenses and other current liabilities in the Company’s Condensed Consolidated Balance Sheets. Changes in the Company’s contract assets and liabilities for the six months ended April 30, 2023 are as follows (in thousands): April 30, 2023 October 31, 2022 Change Contract assets $103,448 $93,978 $9,470 Contract liabilities 85,381 58,757 26,624 Net contract assets $18,067 $35,221 ($17,154) The increase in the Company's contract assets during the first six months of fiscal 2023 mainly reflects additional unbilled receivables on certain customer contracts using an over-time recognition model in excess of billings on certain customer contracts at both the FSG and ETG. The increase in the Company's contract liabilities during the first six months of fiscal 2023 principally reflects the receipt of advance deposits on certain customer contracts mainly at the FSG. The amount of revenue that the Company recognized during the six and three months ended April 30, 2023 that was included in contract liabilities as of the beginning of fiscal 2023 was $30.1 million and $9.8 million, respectively. Remaining Performance Obligations As of April 30, 2023, the Company had $606.7 million of remaining performance obligations associated with contracts with an original duration of greater than one year pertaining to the majority of the products offered by the ETG as well as certain products of the FSG's specialty products and aftermarket replacement parts product lines. The Company will recognize net sales as these obligations are satisfied. The Company expects to recognize $217.4 million of this amount during the remainder of fiscal 2023 and $389.3 million thereafter, of which more than half is expected to occur in fiscal 2024. Disaggregation of Revenue The following table summarizes the Company’s net sales by product line for each operating segment (in thousands): Six months ended April 30, Three months ended April 30, 2023 2022 2023 2022 Flight Support Group: Aftermarket replacement parts (1) $426,986 $324,882 $218,343 $173,981 Specialty products (2) 187,493 126,579 96,008 67,286 Repair and overhaul parts and services (3) 149,001 127,533 77,851 65,046 Total net sales 763,480 578,994 392,202 306,313 Electronic Technologies Group: Electronic component parts primarily for defense, space and aerospace equipment (4) 395,320 319,909 220,742 162,441 Electronic component parts for equipment in various other industries (5) 161,498 139,820 81,017 74,952 Total net sales 556,818 459,729 301,759 237,393 Intersegment sales (11,542) (9,567) (6,120) (4,893) Total consolidated net sales $1,308,756 $1,029,156 $687,841 $538,813 (1) Includes various jet engine and aircraft component replacement parts. (2) Includes primarily the sale of specialty components such as thermal insulation blankets, renewable/reusable insulation systems, advanced niche components, complex composite assemblies, and expanded foil mesh as well as machining, brazing, fabricating and welding services generally to original equipment manufacturers. (3) Includes primarily the sale of parts consumed in various repair and overhaul services on selected jet engine and aircraft components, avionics, instruments, composites and flight surfaces of commercial and military aircraft. (4) Includes various component parts such as electro-optical infrared simulation and test equipment, electro-optical laser products, electro-optical, microwave and other power equipment, high-speed interface products, power conversion products, underwater locator beacons, emergency locator transmission beacons, traveling wave tube amplifiers, microwave power modules, a wide variety of memory products and radio frequency (RF) and microwave products, crashworthy and ballistically self-sealing auxiliary fuel systems, high performance communications and electronic intercept receivers and tuners, high performance active antenna systems and airborne antennas, technical surveillance countermeasures (TSCM) equipment, custom high power filters and filter assemblies, radiation assurance services and products, and high-reliability, complex, passive electronic components and rotary joint assemblies. (5) Includes various component parts such as electromagnetic and radio frequency interference shielding, high voltage interconnection devices, high voltage advanced power electronics, harsh environment connectivity products, custom molded cable assemblies, silicone material for a variety of demanding applications, and rugged small form-factor embedded computing solutions, and high performance test sockets and adaptors. The following table summarizes the Company’s net sales by industry for each operating segment (in thousands): Six months ended April 30, Three months ended April 30, 2023 2022 2023 2022 Flight Support Group: Aerospace $523,893 $417,724 $269,353 $215,319 Defense and Space 196,909 136,258 101,267 77,603 Other (1) 42,678 25,012 21,582 13,391 Total net sales 763,480 578,994 392,202 306,313 Electronic Technologies Group: Defense and Space 260,571 265,861 138,609 134,414 Other (2) 215,794 156,135 118,024 82,772 Aerospace 80,453 37,733 45,126 20,207 Total net sales 556,818 459,729 301,759 237,393 Intersegment sales (11,542) (9,567) (6,120) (4,893) Total consolidated net sales $1,308,756 $1,029,156 $687,841 $538,813 (1) Principally industrial products.

INCOME TAXES

INCOME TAXES	6 Months Ended
	Apr. 30, 2023
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	INCOME TAXESThe Company's effective tax rate was 19.3% in the first six months of fiscal 2023, as compared to 15.0% in the first six months of fiscal 2022. The increase in the Company's effective tax rate principally reflects a larger tax benefit from stock option exercises recognized in the first quarter of fiscal 2022. The Company recognized a discrete tax benefit from stock option exercises in both the first quarter of fiscal 2023 and 2022 of $6.2 million and $17.8 million, respectively. This was partially offset by a favorable impact from tax-exempt unrealized gains in the cash surrender values of life insurance policies related to the HEICO Leadership Compensation Plan, net of the non-deductible portion related to executive compensation, in the first six months of fiscal 2023 as compared tax-exempt unrealized losses recognized in the first six months of fiscal 2022.The Company's effective tax rate decreased to 21.2% in the second quarter of fiscal 2023, as compared to 23.7% in the second quarter of fiscal 2022. The decrease in the Company's effective tax rate principally reflects a favorable impact from tax-exempt unrealized gains in the cash surrender values of life insurance policies related to the HEICO Leadership Compensation Plan, net of the non-deductible portion related to executive compensation, in the second quarter of fiscal 2023 as compared to tax-exempt unrealized losses recognized in the second quarter of fiscal 2022

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	6 Months Ended
	Apr. 30, 2023
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	FAIR VALUE MEASUREMENTS The Company's assets and liabilities that were measured at fair value on a recurring basis are set forth by level within the fair value hierarchy in the following tables (in thousands): As of April 30, 2023 Quoted Prices Significant Significant Unobservable Inputs Total Assets: Deferred compensation plan: Corporate-owned life insurance $— $229,241 $— $229,241 Money market fund 7,677 — — 7,677 Total assets $7,677 $229,241 $— $236,918 Liabilities: Contingent consideration $— $— $56,831 $56,831 As of October 31, 2022 Quoted Prices Significant Significant Unobservable Inputs Total Assets: Deferred compensation plan: Corporate-owned life insurance $— $201,239 $— $201,239 Money market fund 3,477 — — 3,477 Total assets $3,477 $201,239 $— $204,716 Liabilities: Contingent consideration $— $— $82,803 $82,803 The Company maintains the HEICO Corporation Leadership Compensation Plan (the "LCP"), which is a non-qualified deferred compensation plan. The assets of the LCP principally represent cash surrender values of life insurance policies, which derive their fair values from investments in mutual funds that are managed by an insurance company, and are classified within Level 2 and valued using a market approach. Certain other assets of the LCP represent investments in money market funds that are classified within Level 1. The assets of the LCP are held within an irrevocable trust and classified within other assets in the Company’s Condensed Consolidated Balance Sheets. The related liabilities of the LCP are included within other long-term liabilities and accrued expenses and other current liabilities in the Company’s Condensed Consolidated Balance Sheets and have an aggregate value of $235.0 million as of April 30, 2023 and $203.0 million as of October 31, 2022. As part of the agreement to acquire 80.36% of the stock of a subsidiary by the ETG in fiscal 2022, the Company may be obligated to pay contingent consideration of up to $12.1 million in fiscal 2027 based on the earnings of the acquired entity during fiscal years 2025 and 2026 provided the entity meets a certain earnings objective during each of fiscal years 2024 to 2026. As of April 30, 2023, the estimated fair value of the contingent consideration was $6.3 million. As part of the agreement to acquire 96% of the stock of a subsidiary by the FSG in fiscal 2022, the Company may be obligated to pay contingent consideration of up to $27.4 million in fiscal 2027 based on the earnings of the acquired entity during fiscal years 2025 and 2026 provided the entity meets certain earnings objectives during each of fiscal years 2022 to 2024. As of April 30, 2023, the estimated fair value of the contingent consideration was $16.1 million. As part of the agreement to acquire 74% of the membership interests of a subsidiary by the FSG in fiscal 2022, the Company may be obligated to pay contingent consideration of $14.1 million in fiscal 2027 should the acquired entity meet a certain earnings objective during the five-year period following the acquisition. As of April 30, 2023, the estimated fair value of the contingent consideration was $6.5 million. As part of the agreement to acquire 89% of the membership interests of a subsidiary by the FSG in fiscal 2021, the Company may have been obligated to pay contingent consideration of up to $26.7 million should the acquired entity have met certain earnings objectives following the acquisition. In March 2023, at the request of the noncontrolling interest holders, the agreement was amended and the Company paid $8.9 million to the noncontrolling interest holders in consideration for the termination of the contingent consideration arrangement. Accordingly, of the $18.0 million estimated fair value of contingent consideration as of October 31, 2022, the remaining $9.1 million (after the $8.9 million payment) was reversed in the second quarter of fiscal 2023. As part of the agreement to acquire 89.99% of the equity interests of a subsidiary by the ETG in fiscal 2020, the Company may be obligated to pay contingent consideration of up to CAD $13.5 million, or $10.0 million, in fiscal 2025 should the acquired entity meet certain earnings objectives during fiscal 2023 and 2024. As of April 30, 2023, the estimated fair value of the contingent consideration was CAD $11.5 million, or $8.5 million. Additionally, the acquired entity achieved a required earnings objective during fiscal years 2021 and 2022 that obligated the Company to pay additional contingent consideration of CAD $13.5 million, or $10.0 million, which was paid in the first quarter of fiscal 2023. As part of the agreement to acquire a subsidiary by the ETG in fiscal 2017, the Company may be obligated to pay contingent consideration of $20.0 million in fiscal 2023 should the acquired entity meet a certain earnings objective during the first six years following the acquisition. As of April 30, 2023, the estimated fair value of the contingent consideration was $19.5 million. The following unobservable inputs were used to derive the estimated fair value of the Company's Level 3 contingent consideration liabilities as of April 30, 2023 ($ in thousands): Unobservable Weighted Acquisition Date Fair Value Input Range Average (1) 9-1-2022 $6,296 Compound annual revenue growth rate 0% - 17% 13% Discount rate 7.6% - 7.6% 7.6% 7-18-2022 16,068 Compound annual revenue growth rate 2% - 9% 5% Discount rate 7.6% - 7.6% 7.6% 3-17-2022 6,513 Compound annual revenue growth rate (3%) - 5% 0% Discount rate 6.6% - 6.6% 6.6% 8-18-2020 8,475 Compound annual revenue growth rate 15% - 24% 22% Discount rate 8.2% - 8.2% 8.2% 9-15-2017 19,479 Compound annual revenue growth rate 4% - 5% 5% Discount rate 6.3% - 6.3% 6.3% (1) Unobservable inputs were weighted by the relative fair value of the contingent consideration liability. Changes in the Company’s contingent consideration liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3) for the six months ended April 30, 2023 are as follows (in thousands): Liabilities Balance as of October 31, 2022 $82,803 Payment of contingent consideration (18,909) Amendment and termination of contingent consideration agreement (9,057) Increase in accrued contingent consideration, net 1,843 Foreign currency transaction adjustments 151 Balance as of April 30, 2023 $56,831 Included in the accompanying Condensed Consolidated Balance Sheet under the following captions: Accrued expenses and other current liabilities $19,479 Other long-term liabilities 37,352 $56,831 The Company records changes in accrued contingent consideration and foreign currency transaction adjustments within SG&A expenses The carrying amounts of the Company’s cash and cash equivalents, accounts receivable, trade accounts payable and accrued expenses and other current liabilities approximate fair value as of April 30, 2023 due to the relatively short maturity of the respective instruments. The carrying amount of long-term debt approximates fair value due to its variable interest rates.

NET INCOME PER SHARE ATTRIBUTAB

NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS	6 Months Ended
	Apr. 30, 2023
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS The computation of basic and diluted net income per share attributable to HEICO shareholders is as follows (in thousands, except per share data): Six months ended April 30, Three months ended April 30, 2023 2022 2023 2022 Numerator: Net income attributable to HEICO $198,147 $171,931 $105,120 $85,010 Denominator: Weighted average common shares outstanding - basic 136,786 135,763 136,916 135,891 Effect of dilutive stock options 1,804 2,153 1,684 1,976 Weighted average common shares outstanding - diluted 138,590 137,916 138,600 137,867 Net income per share attributable to HEICO shareholders: Basic $1.45 $1.27 $.77 $.63 Diluted $1.43 $1.25 $.76 $.62 Anti-dilutive stock options excluded 1,045 739 1,340 749

OPERATING SEGMENTS

OPERATING SEGMENTS	6 Months Ended
	Apr. 30, 2023
Segment Reporting [Abstract]
Segment Reporting Disclosure [Text Block]	OPERATING SEGMENTS Information on the Company’s two operating segments, the FSG and the ETG, for the six and three months ended April 30, 2023 and 2022, respectively, is as follows (in thousands): Other, (1) Consolidated Segment FSG ETG Six months ended April 30, 2023: Net sales $763,480 $556,818 ($11,542) $1,308,756 Depreciation 8,152 9,461 535 18,148 Amortization 13,286 24,802 548 38,636 Operating income 183,521 124,516 (21,513) 286,524 Capital expenditures 10,643 11,058 220 21,921 Six months ended April 30, 2022: Net sales $578,994 $459,729 ($9,567) $1,029,156 Depreciation 7,411 6,792 493 14,696 Amortization 11,262 20,179 570 32,011 Operating income 118,573 121,576 (18,550) 221,599 Capital expenditures 8,113 7,995 103 16,211 Three months ended April 30, 2023: Net sales $392,202 $301,759 ($6,120) $687,841 Depreciation 3,974 5,523 265 9,762 Amortization 6,555 13,133 274 19,962 Operating income 99,912 67,979 (10,801) 157,090 Capital expenditures 3,990 6,969 116 11,075 Three months ended April 30, 2022: Net sales $306,313 $237,393 ($4,893) $538,813 Depreciation 3,693 3,426 247 7,366 Amortization 5,749 10,087 283 16,119 Operating income 66,197 65,988 (9,408) 122,777 Capital expenditures 4,531 2,925 64 7,520 (1) Intersegment activity principally consists of net sales from the ETG to the FSG. Total assets by operating segment are as follows (in thousands): Other, Consolidated Segment FSG ETG Total assets as of April 30, 2023 $1,685,580 $2,914,082 $270,537 $4,870,199 Total assets as of October 31, 2022 1,635,229 2,230,744 229,523 4,095,496

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	6 Months Ended
	Apr. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	COMMITMENTS AND CONTINGENCIES Guarantees As of April 30, 2023, the Company has arranged for standby letters of credit aggregating $22.5 million, which are supported by its revolving credit facility and principally pertain to performance guarantees related to customer contracts entered into by certain of the Company's subsidiaries as well as payment guarantees related to potential workers' compensation claims and a facility lease. Product Warranty Changes in the Company’s product warranty liability for the six months ended April 30, 2023 and 2022, respectively, are as follows (in thousands): Six months ended April 30, 2023 2022 Balances as of beginning of fiscal year $3,296 $3,379 Accruals for warranties 1,222 622 Warranty claims settled (1,074) (1,012) Balances as of April 30 $3,444 $2,989 Litigation On April 20, 2021, an indirect subsidiary of HFSC, which was acquired in June 2020, received a grand jury subpoena from the United States District Court for the Southern District of California requiring the production of documents for the time period December 1, 2017 through February 4, 2019 related to the subsidiary's employment of a certain individual and its performance of work on certain Navy vessels during that time period. The Company is cooperating with the investigation. The Company has completed its production of documents responsive to the subpoena, although the Company has a continuing obligation to produce such documents should any be located. At this early stage in the investigation, the Company cannot predict the outcome of the investigation or when the investigation will ultimately be resolved; nor can the Company reasonably estimate the possible range of loss or impact to its business, if any, that may result from this matter.

Subsequent Events

Subsequent Events	6 Months Ended
	Apr. 30, 2023
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENT Wencor Acquisition On May 15, 2023, the Company and its newly formed wholly owned subsidiary, Magnolia Merge Inc., a Delaware corporation (“Merger Sub”), entered into an Agreement and Plan of Merger (the “Merger Agreement”) to acquire Jazz Parent, Inc., a Delaware corporation, the owner of Wencor Group (the “Target” or "Wencor"), with the Target and Jazz Topco GP LLC, a Delaware limited liability company, solely in its capacity as representative for purposes of certain provisions of the Merger Agreement. Merger Sub will merge with and into the Target, with the Target continuing as the surviving entity and a wholly owned subsidiary of the Company (the “Merger”), for an aggregate purchase price of $1.9 billion in cash (the “Cash Consideration”), subject to certain working capital, debt and other customary adjustments set forth in the Merger Agreement, and 1,137,656 shares of HEICO Class A Common Stock. Wencor is a large commercial and military aircraft aftermarket company offering factory-new FAA-approved aircraft replacement parts, value-added distribution of high-use commercial & military aftermarket parts and aircraft & engine accessory component repair and overhaul services. Subject to the satisfaction of the closing conditions, the Merger is expected to close by the end of calendar 2023. The completion of the Merger is subject to customary closing conditions, including the expiration or termination of the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and the receipt of certain other regulatory approvals. The Merger Agreement contains customary termination rights for the parties thereto, including by mutual consent of the Company and the representative and under certain other circumstances, including by the Company or the representative if the Merger has not occurred on or before the nine-month anniversary of the signing of the Merger Agreement subject to up to two 90-day extensions if on such date a closing condition related to regulatory approvals has not been satisfied or waived. The Company is required to pay Target a termination fee of $143.5 million in cash upon termination of the Merger Agreement under specified circumstances, including the failure to obtain regulatory approvals or, among others, if the Company materially breaches its regulatory covenants such that there is a failure of certain conditions to the Merger. Wencor Acquisition Financing In connection with the Merger, on May 14, 2023, the Company entered into an engagement letter with Truist Securities, Inc. to, among other things, increase the commitments under its existing credit facility from $1.5 billion to $2.0 billion and to extend the maturity date

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	6 Months Ended
	Apr. 30, 2023
Accounting Policies [Abstract]
Basis of Presentation [Text Block]	Basis of Presentation The accompanying unaudited condensed consolidated financial statements of HEICO Corporation and its subsidiaries (collectively, “HEICO,” or the “Company”) have been prepared in conformity with accounting principles generally accepted in the United States of America for interim financial information and in accordance with the instructions to Form 10-Q. Therefore, the condensed consolidated financial statements do not include all information and footnotes normally included in annual consolidated financial statements and should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended October 31, 2022. The October 31, 2022 Condensed Consolidated Balance Sheet has been derived from the Company’s audited consolidated financial statements. In the opinion of management, the unaudited condensed consolidated financial statements contain all adjustments (consisting principally of normal recurring accruals) necessary for a fair presentation of the condensed consolidated balance sheets, statements of operations, statements of comprehensive income, statements of shareholders' equity and statements of cash flows for such interim periods presented. The results of operations for the six months ended April 30, 2023 are not necessarily indicative of the results which may be expected for the entire fiscal year. The Company has two operating segments: the Flight Support Group (“FSG”), consisting of HEICO Aerospace Holdings Corp. and HEICO Flight Support Corp. ("HFSC") and their respective subsidiaries; and the Electronic Technologies Group (“ETG”), consisting of HEICO Electronic Technologies Corp. and its subsidiaries.
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncement In October 2021, the Financial Accounting Standards Board issued Accounting Standards Update ("ASU") 2021-08, "Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers," which requires contract assets and contract liabilities acquired in a business combination to be recognized and measured by the

ACQUISITIONS (Tables)

ACQUISITIONS (Tables)	6 Months Ended
	Apr. 30, 2023
Business Acquisition [Line Items]
Schedule of Fair Value of Total Consideration	The following table summarizes the total consideration for the acquisition of Exxelia (in thousands): Cash paid $515,785 Less: cash acquired (14,234) Total consideration paid, net $501,551
Exxelia
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the allocation of the total consideration for the acquisition of Exxelia to the estimated fair values of the tangible and identifiable intangible assets acquired and liabilities and noncontrolling interests assumed (in thousands): Assets acquired: Goodwill $332,033 Customer relationships 64,935 Intellectual property 44,044 Trade name 21,703 Inventories 55,922 Property, plant and equipment 42,165 Accounts receivable 41,113 Other assets 11,254 Total assets acquired, excluding cash 613,169 Liabilities assumed: Deferred income taxes 31,975 Accounts payable 22,369 Accrued expenses 18,383 Other liabilities 24,231 Total liabilities assumed 96,958 Noncontrolling interests in consolidated subsidiaries 14,660 Net assets acquired, excluding cash $501,551
Business Acquisition, Pro Forma Information	The following table presents unaudited pro forma financial information for the six and three months ended April 30, 2023 and April 30, 2022 as if the acquisition of Exxelia had occurred as of November 1, 2021 (in thousands, except per share data): Six months ended April 30, Three months ended April 30, 2023 2022 2023 2022 Net sales $1,348,159 $1,125,052 $687,841 $586,039 Net income from consolidated operations $234,185 $173,002 $115,568 $85,883 Net income attributable to HEICO $213,969 $157,855 $105,544 $77,901 Net income per share attributable to HEICO shareholders: Basic $1.56 $1.16 $.77 $.57 Diluted $1.54 $1.14 $.76 $.57

SELECTED FINANCIAL STATEMENT _2

SELECTED FINANCIAL STATEMENT INFORMATION (Tables)	6 Months Ended
	Apr. 30, 2023
Selected Financial Statement Information [Abstract]
Schedule of Accounts Receivable [Table Text Block]	Accounts Receivable (in thousands) April 30, 2023 October 31, 2022 Accounts receivable $371,708 $303,181 Less: Allowance for doubtful accounts (10,651) (8,333) Accounts receivable, net $361,057 $294,848
Schedule of Inventories [Table Text Block]	Inventories (in thousands) April 30, 2023 October 31, 2022 Finished products $353,668 $285,024 Work in process 69,700 59,739 Materials, parts, assemblies and supplies 298,201 237,708 Inventories, net of valuation reserves $721,569 $582,471
Schedule of Property, Plant and Equipment [Table Text Block]	Property, Plant and Equipment (in thousands) April 30, 2023 October 31, 2022 Land $19,232 $17,579 Buildings and improvements 168,689 148,598 Machinery, equipment and tooling 360,894 322,252 Construction in progress 23,578 14,533 572,393 502,962 Less: Accumulated depreciation and amortization (298,537) (277,083) Property, plant and equipment, net $273,856 $225,879
Schedule of Research and Development Expenses [Table Text Block]	The amount of new product research and development ("R&D") expenses included in cost of sales for the six and three months ended April 30, 2023 and 2022 is as follows (in thousands): Six months ended April 30, Three months ended April 30, 2023 2022 2023 2022 R&D expenses $43,134 $37,147 $22,896 $18,751
Schedule of Redeemable Noncontrolling Interests [Table Text Block]	Management's estimate of the aggregate Redemption Amount of all Put Rights that the Company could be required to pay is as follows (in thousands): April 30, 2023 October 31, 2022 Redeemable at fair value $300,756 $300,693 Redeemable based on a multiple of future earnings 45,077 26,908 Redeemable noncontrolling interests $345,833 $327,601
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Changes in the components of accumulated other comprehensive loss for the six months ended April 30, 2023 are as follows (in thousands): Foreign Currency Translation Defined Benefit Pension Plan Accumulated Balances as of October 31, 2022 ($45,369) ($1,130) ($46,499) Unrealized gain 28,845 — 28,845 Amortization of unrealized loss — 28 28 Balances as of April 30, 2023 ($16,524) ($1,102) ($17,626)

GOODWILL AND OTHER INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)	6 Months Ended
	Apr. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill [Table Text Block]	Changes in the carrying amount of goodwill by operating segment for the six months ended April 30, 2023 are as follows (in thousands): Segment Consolidated Totals FSG ETG Balances as of October 31, 2022 $561,961 $1,110,464 $1,672,425 Goodwill acquired — 340,173 340,173 Foreign currency translation adjustments 4,242 12,559 16,801 Adjustments to goodwill (955) 2,791 1,836 Balances as of April 30, 2023 $565,248 $1,465,987 $2,031,235
Schedule Of Identifiable Intangible Assets [Table Text Block]	Identifiable intangible assets consist of the following (in thousands): As of April 30, 2023 As of October 31, 2022 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortizing Assets: Customer relationships $611,547 ($229,884) $381,663 $539,529 ($208,127) $331,402 Intellectual property 333,249 (111,233) 222,016 284,171 (98,983) 185,188 Other 8,681 (7,191) 1,490 8,700 (7,017) 1,683 953,477 (348,308) 605,169 832,400 (314,127) 518,273 Non-Amortizing Assets: Trade names 239,150 — 239,150 215,054 — 215,054 $1,192,627 ($348,308) $844,319 $1,047,454 ($314,127) $733,327

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	6 Months Ended
	Apr. 30, 2023
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments [Table Text Block]	Long-term debt consists of the following (in thousands): April 30, 2023 October 31, 2022 Borrowings under revolving credit facility $723,000 $275,000 Finance leases and note payable 14,397 15,274 737,397 290,274 Less: Current maturities of long-term debt (1,618) (1,654) $735,779 $288,620

REVENUE (Tables)

REVENUE (Tables)	6 Months Ended
	Apr. 30, 2023
Revenue from Contract with Customer [Abstract]
Contract with Customer, Asset and Liability [Table Text Block]	Changes in the Company’s contract assets and liabilities for the six months ended April 30, 2023 are as follows (in thousands): April 30, 2023 October 31, 2022 Change Contract assets $103,448 $93,978 $9,470 Contract liabilities 85,381 58,757 26,624 Net contract assets $18,067 $35,221 ($17,154)
Product Line [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Table Text Block]	The following table summarizes the Company’s net sales by product line for each operating segment (in thousands): Six months ended April 30, Three months ended April 30, 2023 2022 2023 2022 Flight Support Group: Aftermarket replacement parts (1) $426,986 $324,882 $218,343 $173,981 Specialty products (2) 187,493 126,579 96,008 67,286 Repair and overhaul parts and services (3) 149,001 127,533 77,851 65,046 Total net sales 763,480 578,994 392,202 306,313 Electronic Technologies Group: Electronic component parts primarily for defense, space and aerospace equipment (4) 395,320 319,909 220,742 162,441 Electronic component parts for equipment in various other industries (5) 161,498 139,820 81,017 74,952 Total net sales 556,818 459,729 301,759 237,393 Intersegment sales (11,542) (9,567) (6,120) (4,893) Total consolidated net sales $1,308,756 $1,029,156 $687,841 $538,813 (1) Includes various jet engine and aircraft component replacement parts. (2) Includes primarily the sale of specialty components such as thermal insulation blankets, renewable/reusable insulation systems, advanced niche components, complex composite assemblies, and expanded foil mesh as well as machining, brazing, fabricating and welding services generally to original equipment manufacturers. (3) Includes primarily the sale of parts consumed in various repair and overhaul services on selected jet engine and aircraft components, avionics, instruments, composites and flight surfaces of commercial and military aircraft. (4) Includes various component parts such as electro-optical infrared simulation and test equipment, electro-optical laser products, electro-optical, microwave and other power equipment, high-speed interface products, power conversion products, underwater locator beacons, emergency locator transmission beacons, traveling wave tube amplifiers, microwave power modules, a wide variety of memory products and radio frequency (RF) and microwave products, crashworthy and ballistically self-sealing auxiliary fuel systems, high performance communications and electronic intercept receivers and tuners, high performance active antenna systems and airborne antennas, technical surveillance countermeasures (TSCM) equipment, custom high power filters and filter assemblies,
Sales by Industry [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Table Text Block]	The following table summarizes the Company’s net sales by industry for each operating segment (in thousands): Six months ended April 30, Three months ended April 30, 2023 2022 2023 2022 Flight Support Group: Aerospace $523,893 $417,724 $269,353 $215,319 Defense and Space 196,909 136,258 101,267 77,603 Other (1) 42,678 25,012 21,582 13,391 Total net sales 763,480 578,994 392,202 306,313 Electronic Technologies Group: Defense and Space 260,571 265,861 138,609 134,414 Other (2) 215,794 156,135 118,024 82,772 Aerospace 80,453 37,733 45,126 20,207 Total net sales 556,818 459,729 301,759 237,393 Intersegment sales (11,542) (9,567) (6,120) (4,893) Total consolidated net sales $1,308,756 $1,029,156 $687,841 $538,813 (1) Principally industrial products.

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	6 Months Ended
	Apr. 30, 2023
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	The Company's assets and liabilities that were measured at fair value on a recurring basis are set forth by level within the fair value hierarchy in the following tables (in thousands): As of April 30, 2023 Quoted Prices Significant Significant Unobservable Inputs Total Assets: Deferred compensation plan: Corporate-owned life insurance $— $229,241 $— $229,241 Money market fund 7,677 — — 7,677 Total assets $7,677 $229,241 $— $236,918 Liabilities: Contingent consideration $— $— $56,831 $56,831 As of October 31, 2022 Quoted Prices Significant Significant Unobservable Inputs Total Assets: Deferred compensation plan: Corporate-owned life insurance $— $201,239 $— $201,239 Money market fund 3,477 — — 3,477 Total assets $3,477 $201,239 $— $204,716 Liabilities: Contingent consideration $— $— $82,803 $82,803
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]	The following unobservable inputs were used to derive the estimated fair value of the Company's Level 3 contingent consideration liabilities as of April 30, 2023 ($ in thousands): Unobservable Weighted Acquisition Date Fair Value Input Range Average (1) 9-1-2022 $6,296 Compound annual revenue growth rate 0% - 17% 13% Discount rate 7.6% - 7.6% 7.6% 7-18-2022 16,068 Compound annual revenue growth rate 2% - 9% 5% Discount rate 7.6% - 7.6% 7.6% 3-17-2022 6,513 Compound annual revenue growth rate (3%) - 5% 0% Discount rate 6.6% - 6.6% 6.6% 8-18-2020 8,475 Compound annual revenue growth rate 15% - 24% 22% Discount rate 8.2% - 8.2% 8.2% 9-15-2017 19,479 Compound annual revenue growth rate 4% - 5% 5% Discount rate 6.3% - 6.3% 6.3%
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	Changes in the Company’s contingent consideration liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3) for the six months ended April 30, 2023 are as follows (in thousands): Liabilities Balance as of October 31, 2022 $82,803 Payment of contingent consideration (18,909) Amendment and termination of contingent consideration agreement (9,057) Increase in accrued contingent consideration, net 1,843 Foreign currency transaction adjustments 151 Balance as of April 30, 2023 $56,831 Included in the accompanying Condensed Consolidated Balance Sheet under the following captions: Accrued expenses and other current liabilities $19,479 Other long-term liabilities 37,352 $56,831

NET INCOME PER SHARE ATTRIBUT_2

NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Tables)	6 Months Ended
	Apr. 30, 2023
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	The computation of basic and diluted net income per share attributable to HEICO shareholders is as follows (in thousands, except per share data): Six months ended April 30, Three months ended April 30, 2023 2022 2023 2022 Numerator: Net income attributable to HEICO $198,147 $171,931 $105,120 $85,010 Denominator: Weighted average common shares outstanding - basic 136,786 135,763 136,916 135,891 Effect of dilutive stock options 1,804 2,153 1,684 1,976 Weighted average common shares outstanding - diluted 138,590 137,916 138,600 137,867 Net income per share attributable to HEICO shareholders: Basic $1.45 $1.27 $.77 $.63 Diluted $1.43 $1.25 $.76 $.62 Anti-dilutive stock options excluded 1,045 739 1,340 749

OPERATING SEGMENTS (Tables)

OPERATING SEGMENTS (Tables)	6 Months Ended
	Apr. 30, 2023
Segment Reporting [Abstract]
Schedule Of Segment Reporting Information By Segment [Table Text Block]	Information on the Company’s two operating segments, the FSG and the ETG, for the six and three months ended April 30, 2023 and 2022, respectively, is as follows (in thousands): Other, (1) Consolidated Segment FSG ETG Six months ended April 30, 2023: Net sales $763,480 $556,818 ($11,542) $1,308,756 Depreciation 8,152 9,461 535 18,148 Amortization 13,286 24,802 548 38,636 Operating income 183,521 124,516 (21,513) 286,524 Capital expenditures 10,643 11,058 220 21,921 Six months ended April 30, 2022: Net sales $578,994 $459,729 ($9,567) $1,029,156 Depreciation 7,411 6,792 493 14,696 Amortization 11,262 20,179 570 32,011 Operating income 118,573 121,576 (18,550) 221,599 Capital expenditures 8,113 7,995 103 16,211 Three months ended April 30, 2023: Net sales $392,202 $301,759 ($6,120) $687,841 Depreciation 3,974 5,523 265 9,762 Amortization 6,555 13,133 274 19,962 Operating income 99,912 67,979 (10,801) 157,090 Capital expenditures 3,990 6,969 116 11,075 Three months ended April 30, 2022: Net sales $306,313 $237,393 ($4,893) $538,813 Depreciation 3,693 3,426 247 7,366 Amortization 5,749 10,087 283 16,119 Operating income 66,197 65,988 (9,408) 122,777 Capital expenditures 4,531 2,925 64 7,520
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	Total assets by operating segment are as follows (in thousands): Other, Consolidated Segment FSG ETG Total assets as of April 30, 2023 $1,685,580 $2,914,082 $270,537 $4,870,199 Total assets as of October 31, 2022 1,635,229 2,230,744 229,523 4,095,496

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	6 Months Ended
	Apr. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Schedule of Product Warranty Liability [Table Text Block]	Changes in the Company’s product warranty liability for the six months ended April 30, 2023 and 2022, respectively, are as follows (in thousands): Six months ended April 30, 2023 2022 Balances as of beginning of fiscal year $3,296 $3,379 Accruals for warranties 1,222 622 Warranty claims settled (1,074) (1,012) Balances as of April 30 $3,444 $2,989

ACQUISITIONS (Total Considerati

ACQUISITIONS (Total Consideration) (Details) - USD ($) $ in Thousands	6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 524,231	$ 105,533
Exxelia
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	515,785
Cash Acquired from Acquisition	(14,234)
Payments to Acquire Businesses, Net of Cash Acquired	$ 501,551

ACQUISITIONS (Fair Value of Acq

ACQUISITIONS (Fair Value of Acquired Assets) (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Oct. 31, 2022
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Goodwill	$ 2,031,235	$ 1,672,425
Exxelia
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Goodwill	332,033
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	55,922
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	42,165
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	41,113
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	11,254
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	613,169
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	31,975
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable	22,369
Accrued Expenses Assumed	18,383
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	24,231
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	96,958
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value	14,660
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest	501,551
Exxelia | Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	21,703
Exxelia | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	64,935
Exxelia | Intellectual Property [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 44,044

ACQUISITIONS (Pro Forma) (Detai

ACQUISITIONS (Pro Forma) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Business Combination and Asset Acquisition [Abstract]
Business Acquisition, Pro Forma Revenue	$ 687,841	$ 586,039	$ 1,348,159	$ 1,125,052
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax	115,568	85,883	234,185	173,002
Pro Forma Net income attributable to Parent	$ 105,544	$ 77,901	$ 213,969	$ 157,855
Business Acquisition, Pro Forma Earnings Per Share, Basic	$ 0.77	$ 0.57	$ 1.56	$ 1.16
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$ 0.76	$ 0.57	$ 1.54	$ 1.14

ACQUISITIONS (Details Textuals)

ACQUISITIONS (Details Textuals) € in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2023 USD ($)	Apr. 30, 2022 USD ($)	Apr. 30, 2023 USD ($)	Apr. 30, 2022 USD ($)	Apr. 30, 2023 EUR (€)
Business Acquisition [Line Items]
Revenues	$ 687,841	$ 538,813	$ 1,308,756	$ 1,029,156
Exxelia [Member]
Business Acquisition [Line Items]
Preferred Stock, Dividend Rate, Percentage			5.18%
Revenues	$ 54,600		$ 69,600
Exxelia [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years		15 years		15 years
Exxelia [Member] | Intellectual Property [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years		15 years		15 years
Exxelia [Member] | Exxelia [Member]
Business Acquisition [Line Items]
Related Party Transaction, Terms and Manner of Settlement			HEICO issued Exxelia a ten-year, €150 million note, which accrues interest at 4.7% per annum on the principal outstanding.
Related Party Transaction, Rate			4.70%
Exxelia [Member] | Exxelia [Member] | Euro Member Countries, Euro
Business Acquisition [Line Items]
Financing Receivable, after Allowance for Credit Loss, Noncurrent | €					€ 150,000
ELT
Business Acquisition [Line Items]
Business Combination, Reason for Business Combination			The transaction provides the HEICO Electronic subsidiary with all rights to produce, sell and repair both fixed and portable Honeywell ELTs, as well as various support equipment.
Heico Electronic Technologies Corp | Exxelia [Member]
Business Acquisition [Line Items]
Name of Acquired Entity			Exxelia International SAS
Description of Acquired Entity			Exxelia designs, manufactures and sells high reliability (“Hi-Rel”), complex, passive electronic components and rotary joint assemblies for mostly aerospace and defense applications, in addition to other high-end applications, such as medical and energy uses, including emerging “clean energy” and electrification applications.
Business Combination, Reason for Business Combination			The Company believes that this acquisition will further HEICO's strategy of expanding its already wide range of mission-critical and Hi-Rel components for the most demanding applications, as well as provide HEICO with added broad geographic and product diversity, including in the important European market.
Business Acquisition, Percentage of Voting Interests Acquired	93.69%		93.69%		93.69%
Business Acquisition, Transaction Costs	$ 5,200		$ 5,200
Heico Electronic Technologies Corp | Exxelia [Member] | Existing Management
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	6.31%		6.31%		6.31%
Percent of ownership sold during the period	2.72%
Heico Electronic Technologies Corp | Exxelia [Member] | Exxelia [Member]
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	90.97%		90.97%		90.97%
Heico Electronic Technologies Corp | Alcon
Business Acquisition [Line Items]
Name of Acquired Entity			Alcon Electronics Pvt. Ltd.
Business Acquisition, Percentage of Voting Interests Acquired	90%		90%		90%
Heico Electronic Technologies Corp | Alcon | Existing Management
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	10%		10%		10%
ELT
Asset Acquisition [Line Items]
Name Of Acquired Product Line			Aircraft Emergency Locator Transmitter
Description of Acquired Product Line			ELTs provide critical emergency transmission signals in the event of aircraft impact on land or water to enable first responders to locate the aircraft.

SELECTED FINANCIAL STATEMENT _3

SELECTED FINANCIAL STATEMENT INFORMATION (Accounts Receivable) (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Oct. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 371,708	$ 303,181
Less: Allowance for doubtful accounts	(10,651)	(8,333)
Accounts receivable, net	$ 361,057	$ 294,848

SELECTED FINANCIAL STATEMENT _4

SELECTED FINANCIAL STATEMENT INFORMATION (Inventories) (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Oct. 31, 2022
Inventory [Line Items]
Finished products	$ 353,668	$ 285,024
Work in process	69,700	59,739
Materials, parts, assemblies and supplies	298,201	237,708
Inventories, net of valuation reserves	$ 721,569	$ 582,471

SELECTED FINANCIAL STATEMENT _5

SELECTED FINANCIAL STATEMENT INFORMATION (Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Oct. 31, 2022
Property, Plant and Equipment [Line Items]
Land	$ 19,232	$ 17,579
Buildings and improvements	168,689	148,598
Machinery, equipment and tooling	360,894	322,252
Construction in progress	23,578	14,533
Property, plant and equipment, gross	572,393	502,962
Less: Accumulated depreciation and amortization	(298,537)	(277,083)
Property, plant and equipment, net	$ 273,856	$ 225,879

SELECTED FINANCIAL STATEMENT _6

SELECTED FINANCIAL STATEMENT INFORMATION (Research and Development Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Selected Financial Statement Information (Details) [Abstract]
R&D expenses	$ 22,896	$ 18,751	$ 43,134	$ 37,147

SELECTED FINANCIAL STATEMENT _7

SELECTED FINANCIAL STATEMENT INFORMATION (Redeemable Noncontrolling Interests) (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Oct. 31, 2022
Redeemable Noncontrolling Interest [Line Items]
Redeemable at fair value	$ 300,756	$ 300,693
Redeemable based on a multiple of future earnings	45,077	26,908
Redeemable noncontrolling interests	$ 345,833	$ 327,601

SELECTED FINANCIAL STATEMENT _8

SELECTED FINANCIAL STATEMENT INFORMATION (Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Starting accumulated other comprehensive loss			$ (46,499)
Unrealized gain (loss)			28,845
Amortization of unrealized loss on defined benefit pension plan, net of tax	$ 13	$ 22	28	$ 33
Ending accumulated other comprehensive loss	(17,626)		(17,626)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Starting accumulated other comprehensive loss			(45,369)
Unrealized gain (loss)			28,845
Ending accumulated other comprehensive loss	(16,524)		(16,524)
Pension Benefit Obligation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Starting accumulated other comprehensive loss			(1,130)
Amortization of unrealized loss on defined benefit pension plan, net of tax			28
Ending accumulated other comprehensive loss	$ (1,102)		$ (1,102)

SELECTED FINANCIAL STATEMENT _9

SELECTED FINANCIAL STATEMENT INFORMATION (Details Textuals) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022	Oct. 31, 2022
Selected Financial Statement Information (Details) [Abstract]
Accrued customer rebates and credits	$ 19.5		$ 19.5		$ 17.9
Total customer rebates and credits deducted within net sales	$ 2	$ 2	$ 4.2	$ 3.7
FY 2015 Acquisition | Flight Support Group [Member] | Flight Support Group [Member]
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	19.90%		19.90%
Noncontrolling Interest, Ownership Percentage by Parent	85.10%		85.10%
Exxelia | Heico Electronic Technologies Corp
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	93.69%		93.69%
Exxelia | Heico Electronic Technologies Corp | Existing Management
Business Acquisition [Line Items]
Percent of ownership sold during the period	2.72%
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	6.31%		6.31%
Exxelia | Heico Electronic Technologies Corp | Exxelia
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	90.97%		90.97%
Alcon | Heico Electronic Technologies Corp
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	90%		90%
Alcon | Heico Electronic Technologies Corp | Existing Management
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	10%		10%

GOODWILL AND OTHER INTANGIBLE_3

GOODWILL AND OTHER INTANGIBLE ASSETS (Goodwill) (Details) $ in Thousands	6 Months Ended
	Apr. 30, 2023 USD ($)
Goodwill [Line Items]
Opening Balance	$ 1,672,425
Goodwill acquired	340,173
Foreign currency translation adjustments	16,801
Adjustments to goodwill	1,836
Ending Balance	2,031,235
Flight Support Group [Member]
Goodwill [Line Items]
Opening Balance	561,961
Goodwill acquired	0
Foreign currency translation adjustments	4,242
Adjustments to goodwill	(955)
Ending Balance	565,248
Electronic Technologies Group [Member]
Goodwill [Line Items]
Opening Balance	1,110,464
Goodwill acquired	340,173
Foreign currency translation adjustments	12,559
Adjustments to goodwill	2,791
Ending Balance	$ 1,465,987

GOODWILL AND OTHER INTANGIBLE_4

GOODWILL AND OTHER INTANGIBLE ASSETS (Identifiable Intangible Assets) (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Oct. 31, 2022
Acquired Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Finite-Lived Customer Relationships, Gross	$ 611,547	$ 539,529
Finite-Lived Intangible Assets, Accumulated Amortization	(348,308)	(314,127)
Finite-Lived Intangible Assets, Net	605,169	518,273
Finite-Lived Intellectual Property, Gross	333,249	284,171
Other Finite-Lived Intangible Assets, Gross	8,681	8,700
Finite-Lived Intangible Assets, Gross	953,477	832,400
Indefinite-Lived Trade Names	239,150	215,054
Intangible Assets, Gross (Excluding Goodwill)	1,192,627	1,047,454
Intangible assets, net	844,319	733,327
Customer Relationships [Member]
Acquired Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	(229,884)	(208,127)
Finite-Lived Intangible Assets, Net	381,663	331,402
Intellectual Property [Member]
Acquired Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	(111,233)	(98,983)
Finite-Lived Intangible Assets, Net	222,016	185,188
Other Intangible Assets
Acquired Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	(7,191)	(7,017)
Finite-Lived Intangible Assets, Net	$ 1,490	$ 1,683

GOODWILL AND OTHER INTANGIBLE_5

GOODWILL AND OTHER INTANGIBLE ASSETS (Details Textuals) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Business Acquisition, Goodwill, Expected Tax Deductible Amount	$ 21,000		$ 21,000
Amortization expense related to intangible assets	19,100	$ 15,200	36,900	$ 30,200
Estimated Amortization Expense, remainder of fiscal year	37,500		37,500
Estimated Amortization Expense, for fiscal 2024	71,500		71,500
Estimated Amortization Expense, for fiscal 2025	66,700		66,700
Estimated Amortization Expense, for fiscal 2026	61,800		61,800
Estimated Amortization Expense, for fiscal 2027	58,500		58,500
Estimated Amortization Expense, for fiscal 2028	54,100		54,100
Estimated Amortization Expense, thereafter	$ 255,100		$ 255,100

LONG-TERM DEBT (Details)

LONG-TERM DEBT (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Oct. 31, 2022
Borrowings under revolving credit facility	$ 723,000	$ 275,000
Finance leases and note payable	14,397	15,274
Total debt and capital leases	737,397	290,274
Current maturities of long-term debt	(1,618)	(1,654)
Long-term debt, net of current maturities	$ 735,779	$ 288,620

LONG-TERM DEBT (Details Textual

LONG-TERM DEBT (Details Textuals) - USD ($) $ in Thousands	Apr. 30, 2023	Jan. 31, 2023	Oct. 31, 2022
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Weighted average interest rate	6.10%		4.60%
FY 2023 Acquisition
Short-Term Debt [Line Items]
Recognized Liabilities Assumed, Short-Term Debt	$ 17,200	$ 15,100

REVENUE (Contract Assets and Li

REVENUE (Contract Assets and Liabilities) (Details) - USD ($) $ in Thousands	6 Months Ended
	Apr. 30, 2023	Oct. 31, 2022
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Contract assets	$ 103,448	$ 93,978
Contract liabilities	85,381	58,757
Net contract assets	18,067	$ 35,221
Amount of Increase (Decrease) in Contract Assets	9,470
Amount of Increase (Decrease) in Contract Liabilities	26,624
Amount of Increase (Decrease) in Net Contract Assets	$ (17,154)

REVENUE (Disaggregation of Reve

REVENUE (Disaggregation of Revenue, by Product Line) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 687,841	$ 538,813	$ 1,308,756	$ 1,029,156
Flight Support Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		392,202	306,313	763,480	578,994
Flight Support Group [Member] | Aftermarket Replacement Parts [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	218,343	173,981	426,986	324,882
Flight Support Group [Member] | Specialty Products [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[2]	96,008	67,286	187,493	126,579
Flight Support Group [Member] | Repair and Overhaul Parts and Services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[3]	77,851	65,046	149,001	127,533
Electronic Technologies Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		301,759	237,393	556,818	459,729
Electronic Technologies Group [Member] | Electronic Components for Defense, Space and Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[4]	220,742	162,441	395,320	319,909
Electronic Technologies Group [Member] | Other Electronic Components [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[5]	81,017	74,952	161,498	139,820
Corporate And Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ (6,120)	$ (4,893)	$ (11,542)	$ (9,567)
[1]Includes various jet engine and aircraft component replacement parts.[2]Includes primarily the sale of specialty components such as thermal insulation blankets, renewable/reusable insulation systems, advanced niche components, complex composite assemblies, and expanded foil mesh as well as machining, brazing, fabricating and welding services generally to original equipment manufacturers.[3]Includes primarily the sale of parts consumed in various repair and overhaul services on selected jet engine and aircraft components, avionics, instruments, composites and flight surfaces of commercial and military aircraft.[4]Includes various component parts such as electro-optical infrared simulation and test equipment, electro-optical laser products, electro-optical, microwave and other power equipment, high-speed interface products, power conversion products, underwater locator beacons, emergency locator transmission beacons, traveling wave tube amplifiers, microwave power modules, a wide variety of memory products and radio frequency (RF) and microwave products, crashworthy and ballistically self-sealing auxiliary fuel systems, high performance communications and electronic intercept receivers and tuners, high performance active antenna systems and airborne antennas, technical surveillance countermeasures (TSCM) equipment, custom high power filters and filter assemblies, radiation assurance services and products, and high-reliability, complex, passive electronic components and rotary joint assemblies.[5]Includes various component parts such as electromagnetic and radio frequency interference shielding, high voltage interconnection devices, high voltage advanced power electronics, harsh environment connectivity products, custom molded cable assemblies, silicone material for a variety of demanding applications, and rugged small form-factor embedded computing solutions, and high performance test sockets and adaptors.

REVENUE (Disaggregation of Re_2

REVENUE (Disaggregation of Revenue, by Industry) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 687,841	$ 538,813	$ 1,308,756	$ 1,029,156
Flight Support Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		392,202	306,313	763,480	578,994
Flight Support Group [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		269,353	215,319	523,893	417,724
Flight Support Group [Member] | Defense and Space [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		101,267	77,603	196,909	136,258
Flight Support Group [Member] | Other Industries [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	21,582	13,391	42,678	25,012
Electronic Technologies Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		301,759	237,393	556,818	459,729
Electronic Technologies Group [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		45,126	20,207	80,453	37,733
Electronic Technologies Group [Member] | Defense and Space [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		138,609	134,414	260,571	265,861
Electronic Technologies Group [Member] | Other Industries [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[2]	118,024	82,772	215,794	156,135
Corporate And Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ (6,120)	$ (4,893)	$ (11,542)	$ (9,567)
[1]Principally industrial products.[2]Principally other electronics and medical products.

REVENUE (Details Textuals)

REVENUE (Details Textuals) $ in Millions	3 Months Ended	6 Months Ended
	Apr. 30, 2023 USD ($)	Apr. 30, 2023 USD ($)
REVENUE [Abstract]
Contract with Customer, Liability, Revenue Recognized	$ 9.8	$ 30.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-05-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 606.7	$ 606.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-05-02
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 217.4	$ 217.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	6 months	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-11-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 389.3	$ 389.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	6 months 1 day	6 months 1 day

INCOME TAXES (Details Textuals)

INCOME TAXES (Details Textuals) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Percent	21.20%	23.70%	19.30%	15%
Tax benefit from stock option exercises recognized in the period			$ 6,200	$ 17,800

FAIR VALUE MEASUREMENTS (Fair V

FAIR VALUE MEASUREMENTS (Fair Value Hierarchy, by Category) (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Oct. 31, 2022
Deferred Compensation Plans [Abstract]
Deferred compensation plans	$ 236,918	$ 204,716
Liabilities:
Contingent consideration	56,831	82,803
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	7,677	3,477
Liabilities:
Contingent consideration	0	0
Significant Other Observable Inputs (Level 2) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	229,241	201,239
Liabilities:
Contingent consideration	0	0
Significant Unobservable Inputs (Level 3) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Liabilities:
Contingent consideration	56,831	82,803
Corporate Owned Life Insurance [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	229,241	201,239
Corporate Owned Life Insurance [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Corporate Owned Life Insurance [Member] | Significant Other Observable Inputs (Level 2) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	229,241	201,239
Corporate Owned Life Insurance [Member] | Significant Unobservable Inputs (Level 3) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Money Market Funds [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	7,677	3,477
Money Market Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	7,677	3,477
Money Market Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Money Market Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	$ 0	$ 0

FAIR VALUE MEASUREMENTS FAIR VA

FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS (Level 3 Valuation Inputs) (Details) - Fair Value, Inputs, Level 3 [Member] $ in Thousands		Apr. 30, 2023 USD ($)	Oct. 31, 2022 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		$ 56,831	$ 82,803
FY2022 Acquisition Subsidiary 1
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		6,296
FY2022 Acquisition Subsidiary 2
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		16,068
FY2022 Acquisition Subsidiary 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		6,513
FY2020 Acquisition Subsidiary 1
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		8,475
FY 2017 Acquisition [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		$ 19,479
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2022 Acquisition Subsidiary 1
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	[1]	0.13
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2022 Acquisition Subsidiary 1 | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2022 Acquisition Subsidiary 1 | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.17
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2022 Acquisition Subsidiary 2
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	[1]	0.05
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2022 Acquisition Subsidiary 2 | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.02
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2022 Acquisition Subsidiary 2 | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.09
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2022 Acquisition Subsidiary 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	[1]	0
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2022 Acquisition Subsidiary 3 | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		(0.03)
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2022 Acquisition Subsidiary 3 | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.05
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2020 Acquisition Subsidiary 1
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	[1]	0.22
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2020 Acquisition Subsidiary 1 | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.15
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2020 Acquisition Subsidiary 1 | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.24
Measurement Input, Long-term Revenue Growth Rate [Member] | FY 2017 Acquisition [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	[1]	0.05
Measurement Input, Long-term Revenue Growth Rate [Member] | FY 2017 Acquisition [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.04
Measurement Input, Long-term Revenue Growth Rate [Member] | FY 2017 Acquisition [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.05
Measurement Input, Discount Rate [Member] | FY2022 Acquisition Subsidiary 1
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	[1]	0.076
Measurement Input, Discount Rate [Member] | FY2022 Acquisition Subsidiary 1 | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.076
Measurement Input, Discount Rate [Member] | FY2022 Acquisition Subsidiary 1 | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.076
Measurement Input, Discount Rate [Member] | FY2022 Acquisition Subsidiary 2
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	[1]	0.076
Measurement Input, Discount Rate [Member] | FY2022 Acquisition Subsidiary 2 | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.076
Measurement Input, Discount Rate [Member] | FY2022 Acquisition Subsidiary 2 | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.076
Measurement Input, Discount Rate [Member] | FY2022 Acquisition Subsidiary 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	[1]	0.066
Measurement Input, Discount Rate [Member] | FY2022 Acquisition Subsidiary 3 | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.066
Measurement Input, Discount Rate [Member] | FY2022 Acquisition Subsidiary 3 | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.066
Measurement Input, Discount Rate [Member] | FY2020 Acquisition Subsidiary 1
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	[1]	0.082
Measurement Input, Discount Rate [Member] | FY2020 Acquisition Subsidiary 1 | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.082
Measurement Input, Discount Rate [Member] | FY2020 Acquisition Subsidiary 1 | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.082
Measurement Input, Discount Rate [Member] | FY 2017 Acquisition [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	[1]	0.063
Measurement Input, Discount Rate [Member] | FY 2017 Acquisition [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.063
Measurement Input, Discount Rate [Member] | FY 2017 Acquisition [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.063
[1]Unobservable inputs were weighted by the relative fair value of the contingent consideration liability

FAIR VALUE MEASUREMENTS (Contin

FAIR VALUE MEASUREMENTS (Contingent Consideration Liability) (Details) - USD ($) $ in Thousands	6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Oct. 31, 2022
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ (1,842)	$ 1,773
Business Combination, Reversal of Remaining Contingent Consideration, Liability	(9,057)	$ 0
Accrued Liabilities, Current	296,159		$ 290,199
Other Liabilities, Noncurrent	367,624		338,948
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening balance, Liabilities	82,803
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	(18,909)
Business Combination, Reversal of Remaining Contingent Consideration, Liability	(9,057)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases	1,843
Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss)	151
Ending balance, Liabilities	56,831
Accrued Liabilities, Current	19,479
Other Liabilities, Noncurrent	37,352
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value	$ 56,831		$ 82,803

FAIR VALUE MEASUREMENTS (Detail

FAIR VALUE MEASUREMENTS (Details Textuals) $ in Thousands, $ in Thousands	6 Months Ended
	Apr. 30, 2023 USD ($)	Apr. 30, 2023 CAD ($)	Apr. 30, 2022 USD ($)	Apr. 30, 2023 CAD ($)	Oct. 31, 2022 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Reversal of Remaining Contingent Consideration, Liability	$ 9,057		$ 0
Total liabilities	56,831				$ 82,803
Change in value of contingent consideration	$ 1,842		$ (1,773)
Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense	Selling, General and Administrative Expense
FY2022 Acquisition Subsidiary 1 | Electronic Technologies Group [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	80.36%			80.36%
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 12,100
Total liabilities	$ 6,300
FY2021 Acquisition Subsidiary 1 | Flight Support Group [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	89%			89%
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 26,700
Business Combination, Reversal of Remaining Contingent Consideration, Liability	9,100
Total liabilities					18,000
Change in value of contingent consideration	$ 8,900
FY2020 Acquisition Subsidiary 1 | Electronic Technologies Group [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	89.99%			89.99%
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 10,000
Total liabilities	8,500
Change in value of contingent consideration	10,000
FY2020 Acquisition Subsidiary 1 | Canada, Dollars | Electronic Technologies Group [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High				$ 13,500
Total liabilities				$ 11,500
Change in value of contingent consideration		$ 13,500
FY 2017 Acquisition [Member] | Electronic Technologies Group [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	20,000
Total liabilities	$ 19,500
FY2022 Acquisition Subsidiary 2 | Flight Support Group [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	96%			96%
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 27,400
Total liabilities	$ 16,100
FY2022 Acquisition Subsidiary 3 | Flight Support Group [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	74%			74%
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 14,100
Total liabilities	6,500
Aggregate LCP Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Related liabilities of deferred compensation plans, specified as other long-term liabilities	$ 235,000				$ 203,000

NET INCOME PER SHARE ATTRIBUT_3

NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Numerator:
Net income attributable to HEICO	$ 105,120	$ 85,010	$ 198,147	$ 171,931
Denominator:
Weighted Average Number of Shares Outstanding, Basic	136,916	135,891	136,786	135,763
Effect of dilutive stock options	1,684	1,976	1,804	2,153
Weighted Average Number of Shares Outstanding, Diluted	138,600	137,867	138,590	137,916
Earnings Per Share, Basic	$ 0.77	$ 0.63	$ 1.45	$ 1.27
Earnings Per Share, Diluted	$ 0.76	$ 0.62	$ 1.43	$ 1.25
Anti-dilutive stock options excluded	1,340	749	1,045	739

OPERATING SEGMENTS (Details)

OPERATING SEGMENTS (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Segment Reporting Information [Line Items]
Revenues		$ 687,841	$ 538,813	$ 1,308,756	$ 1,029,156
Depreciation		9,762	7,366	18,148	14,696
Amortization		19,962	16,119	38,636	32,011
Operating Income (Loss)		157,090	122,777	286,524	221,599
Capital expenditures		11,075	7,520	21,921	16,211
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	(6,120)	(4,893)	(11,542)	(9,567)
Depreciation	[1]	265	247	535	493
Amortization	[1]	274	283	548	570
Operating Income (Loss)	[1]	(10,801)	(9,408)	(21,513)	(18,550)
Capital expenditures	[1]	116	64	220	103
Flight Support Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		392,202	306,313	763,480	578,994
Depreciation		3,974	3,693	8,152	7,411
Amortization		6,555	5,749	13,286	11,262
Operating Income (Loss)		99,912	66,197	183,521	118,573
Capital expenditures		3,990	4,531	10,643	8,113
Electronic Technologies Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		301,759	237,393	556,818	459,729
Depreciation		5,523	3,426	9,461	6,792
Amortization		13,133	10,087	24,802	20,179
Operating Income (Loss)		67,979	65,988	124,516	121,576
Capital expenditures		$ 6,969	$ 2,925	$ 11,058	$ 7,995
[1]Intersegment activity principally consists of net sales from the ETG to the FSG

OPERATING SEGMENTS (Assets) (De

OPERATING SEGMENTS (Assets) (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Oct. 31, 2022
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 4,870,199	$ 4,095,496
Other Primarily Corporate and Intersegment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	270,537	229,523
Flight Support Group [Member] | Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,685,580	1,635,229
Electronic Technologies Group [Member] | Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 2,914,082	$ 2,230,744

COMMITMENTS AND CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Schedule of Product Warranties [Line Items]
Balances as of beginning of fiscal year	$ 3,296	$ 3,379
Accruals for warranties	1,222	622
Warranty claims settled	(1,074)	(1,012)
Balances as of end of period	$ 3,444	$ 2,989

COMMITMENTS AND CONTINGENCIES_3

COMMITMENTS AND CONTINGENCIES (Details Textuals) $ in Millions	Apr. 30, 2023 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 22.5

Subsequent Events (Details Text

Subsequent Events (Details Textuals) - USD ($) $ in Thousands	May 15, 2023	May 14, 2023	Apr. 30, 2023
Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Line of Credit Facility, Current Borrowing Capacity			$ 1,500,000
Subsequent Event | Bridge Loan
Subsequent Event [Line Items]
Bridge Loan		$ 1,500,000
Subsequent Event | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Line of Credit Facility, Current Borrowing Capacity		$ 2,000,000
Jazz | Subsequent Event
Subsequent Event [Line Items]
Name of Acquired Entity	Jazz Parent, Inc.
Wencor | Subsequent Event
Subsequent Event [Line Items]
Name of Acquired Entity	Wencor Group
Business Combination, Price of Acquisition, Expected	$ 1,900,000
Description of Acquired Entity	Wencor is a large commercial and military aircraft aftermarket company offering factory-new FAA-approved aircraft replacement parts, value-added distribution of high-use commercial & military aftermarket parts and aircraft & engine accessory component repair and overhaul services.
Loss on Contract Termination	$ 143,500
Wencor | Subsequent Event | Common Class A [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, Acquisitions	1,137,656