HEICO (HEI) 10-Q 25 Feb 21 2020 Q1 Quarterly report Financial data

DOCUMENT AND ENTITY INFORMATION

DOCUMENT AND ENTITY INFORMATION - $ / shares	3 Months Ended
	Jan. 31, 2021	Feb. 24, 2021
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	Jan. 31, 2021
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2020
Entity Current Reporting Status	Yes
Entity Information [Line Items]
Entity Incorporation, State or Country Code	FL
Entity Registrant Name	HEICO CORPORATION
Address	3000 Taft Street
Entity Address, City or Town	Hollywood
State	FL
Zip Code	33021
Entity Central Index Key	0000046619
Entity Tax Identification Number	65-0341002
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		54,200,427
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		81,060,661
Entity Common Stock Par Value	$ 0.01

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - UNAUDITED - USD ($) $ in Thousands	Jan. 31, 2021	Oct. 31, 2020
Current assets:
Cash and cash equivalents	$ 399,403	$ 406,852
Accounts receivable, net	202,318	210,433
Contract assets	57,876	60,429
Inventories, net	462,854	463,205
Prepaid expenses and other current assets	26,648	24,706
Total current assets	1,149,099	1,165,625
Property, plant and equipment, net	177,968	168,848
Goodwill	1,388,046	1,383,167
Intangible assets, net	565,921	579,041
Other assets	284,550	251,030
Total assets	3,565,584	3,547,711
Current liabilities:
Current maturities of long-term debt	1,089	1,045
Trade accounts payable	78,292	76,237
Accrued expenses and other current liabilities	151,788	162,232
Income taxes payable	3,506	1,647
Total current liabilities	234,675	241,161
Long-term debt, net of current maturities	668,595	738,786
Deferred income taxes	47,598	55,658
Other long-term liabilities	312,332	280,291
Total liabilities	1,263,200	1,315,896
Commitments and contingencies
Redeemable noncontrolling interests	222,225	221,208
Shareholders' equity:
Total HEICO shareholders' equity	2,048,836	1,980,177
Noncontrolling interests	31,323	30,430
Total shareholders' equity	2,080,159	2,010,607
Total liabilities and equity	$ 3,565,584	$ 3,547,711

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS - UNAUDITED [PARENTHETICAL] - USD ($) shares in Thousands, $ in Thousands	Jan. 31, 2021	Oct. 31, 2020
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	54,195	54,195
Common stock, shares outstanding		54,195
Shareholders' equity:
Preferred Stock, $.01 par value per share; 10,000 shares authorized; none issued	$ 0	$ 0
Common Stock	542	542
Capital in excess of par value	301,107	299,930
Deferred compensation obligation	4,777	4,886
HEICO stock held by irrevocable trust	(4,777)	(4,886)
Accumulated other comprehensive loss	2,129	(9,149)
Retained earnings	$ 1,744,247	$ 1,688,045
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	81,053	80,923
Common stock, shares outstanding	81,053	80,923
Shareholders' equity:
Common Stock	$ 811	$ 809

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - UNAUDITED - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Net sales	$ 417,902	$ 506,275
Operating costs and expenses:
Cost of sales	259,468	308,228
Selling, general and administrative expenses	78,149	87,057
Total operating costs and expenses	337,617	395,285
Operating income	80,285	110,990
Interest expense	(2,448)	(4,283)
Other (expense) income	711	195
Income before income taxes and noncontrolling interests	78,548	106,902
Income tax expense	2,300	(22,900)
Net income from consolidated operations	76,248	129,802
Less: Net income attributable to noncontrolling interests	5,652	7,914
Net income attributable to HEICO	$ 70,596	$ 121,888
Net income per share attributable to HEICO shareholders:
Basic (in dollars per share)	$ 0.52	$ 0.91
Diluted (in dollars per share)	$ 0.51	$ 0.89
Weighted average number of common shares outstanding:
Basic (in shares)	135,210	134,523
Diluted (in shares)	137,742	137,421

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Net income from consolidated operations	$ 76,248	$ 129,802
Other comprehensive income (loss):
Foreign currency translation adjustments	11,648	(2,678)
Amortization of unrealized loss on defined benefit pension plan, net of tax	34	24
Total other comprehensive income (loss)	11,682	(2,654)
Comprehensive income from consolidated operations	87,930	127,148
Less: Comprehensive income attributable to noncontrolling interests	5,652	7,914
Less: Foreign currency translation adjustments attributable to noncontrolling interests	404	(130)
Comprehensive income attributable to noncontrolling interests	6,056	7,784
Comprehensive income attributable to HEICO	$ 81,874	$ 119,364

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]
Starting Balance at Oct. 31, 2019			$ 541	$ 804	$ 284,609	$ 4,232	$ (4,232)	$ (16,739)	$ 1,397,327	$ 28,118	$ 1,694,660
Stockholders' Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 119,364							(2,524)	121,888
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	7,784	$ 4,767								3,017
Comprehensive income	127,148										122,381
Cash dividends									(10,762)		(10,762)
Issuance of common stock to Savings and Investment Plan					1,298						1,298
Share-based compensation expense					2,646						2,646
Proceeds from stock option exercises				1							1,528
Proceeds from stock option exercises, Adjustment to Additional Paid in Capital					1,527
Stock Redeemed or Called During Period, Value					(2,562)						(2,562)
Distributions to noncontrolling interests		(4,347)								(534)	(534)
Adjustments to redemption amount of redeemable noncontrolling interests		(331)							331		331
Adjustments to Additional Paid in Capital, Other					261						261
Ending Balance at Jan. 31, 2020			541	805	287,779	4,232	(4,232)	(19,263)	1,508,784	30,601	1,809,247
Starting Balance, Redeemable Noncontrolling Interests at Oct. 31, 2019		188,264
Temporary Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	7,784	4,767								3,017
Noncontrolling Interest, Increase from Business Combination		7,540
Distributions to noncontrolling interests		(4,347)								(534)	(534)
Adjustments to redemption amount of redeemable noncontrolling interests		(331)							331		331
Ending Balance, Redeemable Noncontrolling Interests at Jan. 31, 2020		195,893
Starting Balance at Oct. 31, 2020	2,010,607		542	809	299,930	4,886	(4,886)	(9,149)	1,688,045	30,430	2,010,607
Stockholders' Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	81,874							11,278	70,596
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	6,056	4,797								1,259
Comprehensive income	87,930										83,133
Cash dividends									(10,818)		(10,818)
Share-based compensation expense					2,229						2,229
Proceeds from stock option exercises				2							2,450
Proceeds from stock option exercises, Adjustment to Additional Paid in Capital					2,448
Stock Redeemed or Called During Period, Value					(3,571)						(3,571)
Distributions to noncontrolling interests		(7,378)								(366)	(366)
Adjustments to redemption amount of redeemable noncontrolling interests		3,576							(3,576)		(3,576)
Value of Stock Issued or Reversed During Period for Deferred Compensation Obligation						(109)
Value of Stock Reversed During Period Deferred Compensation Obligation							109
Adjustments to Additional Paid in Capital, Other					71						71
Ending Balance at Jan. 31, 2021	2,080,159		$ 542	$ 811	$ 301,107	$ 4,777	$ (4,777)	$ 2,129	1,744,247	31,323	2,080,159
Starting Balance, Redeemable Noncontrolling Interests at Oct. 31, 2020	221,208	221,208
Temporary Equity [Roll Forward]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	6,056	4,797								1,259
Distributions to noncontrolling interests		(7,378)								$ (366)	(366)
Adjustments to redemption amount of redeemable noncontrolling interests		3,576							$ (3,576)		$ (3,576)
Temporary Equity, Other Changes	22
Ending Balance, Redeemable Noncontrolling Interests at Jan. 31, 2021	$ 222,225	$ 222,225

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME - UNAUDITED [PARENTHETICAL] - $ / shares	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Cash dividends per share (in dollars per share)	$ 0.08	$ 0.08

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Operating Activities:
Net income from consolidated operations	$ 76,248	$ 129,802
Adjustments to reconcile net income from consolidated operations to net cash provided by (used in) operating activities:
Depreciation and amortization	23,003	21,583
Share-based compensation expense	2,229	2,646
Employer contributions to HEICO Savings and Investment Plan	2,840	2,613
Deferred income tax provision (benefit)	(8,345)	(25,718)
Change in value of contingent consideration	432	408
Changes in operating assets and liabilities, net of acquisitions:
Change in accounts receivable	9,234	23,734
Increase (Decrease) in Contract with Customer, Asset	2,623	(1,719)
Change in inventories	2,602	(20,449)
Change in prepaid expenses and other current assets	(6,614)	(3,303)
Change in trade accounts payable	1,641	(10,678)
Change in accrued expenses and other current liabilities	(19,241)	(48,319)
Change in income taxes payable	6,627	(1,334)
Increase (Decrease) in Obligation, Other Postretirement Benefits	12,022	11,315
Other	1,898	555
Net cash provided by operating activities	107,199	81,136
Investing Activities:
Acquisitions, net of cash acquired	(345)	(45,343)
Capital expenditures	(15,509)	(6,850)
Net Investment Related to Deferred Compensation Plan	(10,400)	(11,800)
Other	983	439
Net cash used in investing activities	(25,271)	(63,554)
Financing Activities:
Payments on revolving credit facility	(70,000)	(38,000)
Proceeds from Long-term Lines of Credit		45,000
Cash dividends paid	(10,818)	(10,762)
Distributions to noncontrolling interests	(7,744)	(4,881)
Common Stock Issued Repurchased and Retired Related To Stock Option Exercises	(3,571)	(2,562)
Payments of Debt Issuance Costs	(1,468)
Proceeds from stock option exercises	2,450	1,528
Other	(256)	(538)
Net cash (used in) provided by financing activities	(91,407)	(10,215)
Effect of exchange rate changes on cash	2,030	(397)
Net (decrease) increase in cash and cash equivalents	(7,449)	6,970
Cash and cash equivalents at beginning of year	406,852	57,001
Cash and cash equivalents at end of period	$ 399,403	$ 63,971

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
	Jan. 31, 2021
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, 2020. The October 31, 2020 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 three months ended January 31, 2021 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. and their respective subsidiaries; and the Electronic Technologies Group (“ETG”), consisting of HEICO Electronic Technologies Corp. (“HEICO Electronic”) and its subsidiaries. The Company's results of operations in the first quarter of fiscal 2021 continue to reflect the adverse impact from the COVID-19 global pandemic (the “Pandemic”). Most notably, demand for HEICO's commercial aviation products and services continues to be moderated by the ongoing depressed commercial aerospace market. Consolidated net sales for the Company's businesses that operate within the commercial aerospace industry decreased by approximately 43% during the first quarter of fiscal 2021, as compared to the first quarter of fiscal 2020. Looking ahead to the remainder of fiscal 2021, the extent to which the Pandemic may have a material adverse effect on the Company's future business, financial condition and results of operations will depend on many factors that are not within HEICO’s control, including but not limited to the duration, spread and severity of the Pandemic, the emergence of new coronavirus strain variants, the timing of distribution and effectiveness of COVID-19 vaccines, government responses and other actions to mitigate the spread of and to treat the Pandemic, and when and to what extent normal business, economic and social activity and conditions resume. However, the Company is cautiously optimistic that the recent vaccine progress may generate increased commercial air travel and result in a gradual recovery in demand for its commercial aerospace parts and services commencing toward the second-half of fiscal 2021.

SELECTED FINANCIAL STATEMENT IN

SELECTED FINANCIAL STATEMENT INFORMATION	3 Months Ended
	Jan. 31, 2021
Selected Financial Statement Information [Abstract]
Selected Financial Statement Information [Text Block]	SELECTED FINANCIAL STATEMENT INFORMATION Accounts Receivable (in thousands) January 31, 2021 October 31, 2020 Accounts receivable $215,145 $223,171 Less: Allowance for doubtful accounts (12,827) (12,738) Accounts receivable, net $202,318 $210,433 Inventories (in thousands) January 31, 2021 October 31, 2020 Finished products $228,602 $235,501 Work in process 40,268 37,957 Materials, parts, assemblies and supplies 193,984 189,747 Inventories, net of valuation reserves $462,854 $463,205 Property, Plant and Equipment (in thousands) January 31, 2021 October 31, 2020 Land $10,877 $6,678 Buildings and improvements 128,961 120,769 Machinery, equipment and tooling 269,836 265,408 Construction in progress 9,307 8,487 418,981 401,342 Less: Accumulated depreciation and amortization (241,013) (232,494) Property, plant and equipment, net $177,968 $168,848 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 $16.0 million as of January 31, 2021 and $15.8 million as of October 31, 2020. The total customer rebates and credits deducted within net sales for the three months ended January 31, 2021 and 2020 was $.8 million and $2.1 million, respectively. Research and Development Expenses The amount of new product research and development ("R&D") expenses included in cost of sales for the three months ended January 31, 2021 and 2020 is as follows (in thousands): Three months ended January 31, 2021 2020 R&D expenses $16,181 $17,103 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 2030. 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): January 31, 2021 October 31, 2020 Redeemable at fair value $180,978 $179,415 Redeemable based on a multiple of future earnings 41,247 41,793 Redeemable noncontrolling interests $222,225 $221,208 Accumulated Other Comprehensive Loss Changes in the components of accumulated other comprehensive income (loss) for the three months ended January 31, 2021 are as follows (in thousands): Foreign Currency Translation Defined Benefit Pension Plan Accumulated Balances as of October 31, 2020 ($6,460) ($2,689) ($9,149) Unrealized gain 11,244 — 11,244 Amortization of unrealized loss — 34 34 Balances as of January 31, 2021 $4,784 ($2,655) $2,129

GOODWILL AND OTHER INTANGIBLE A

GOODWILL AND OTHER INTANGIBLE ASSETS	3 Months Ended
	Jan. 31, 2021
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 three months ended January 31, 2021 are as follows (in thousands): Segment Consolidated Totals FSG ETG Balances as of October 31, 2020 $427,565 $955,602 $1,383,167 Foreign currency translation adjustments 1,903 2,768 4,671 Adjustments to goodwill (33) 241 208 Balances as of January 31, 2021 $429,435 $958,611 $1,388,046 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 price allocation of certain fiscal 2020 acquisitions. Identifiable intangible assets consist of the following (in thousands): As of January 31, 2021 As of October 31, 2020 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortizing Assets: Customer relationships $435,317 ($190,688) $244,629 $443,143 ($188,919) $254,224 Intellectual property 241,704 (89,952) 151,752 240,725 (84,686) 156,039 Licenses 6,559 (4,795) 1,764 6,559 (4,670) 1,889 Patents 1,073 (750) 323 1,071 (746) 325 Non-compete agreements 818 (818) — 811 (811) — Trade names 450 (228) 222 450 (219) 231 685,921 (287,231) 398,690 692,759 (280,051) 412,708 Non-Amortizing Assets: Trade names 167,231 — 167,231 166,333 — 166,333 $853,152 ($287,231) $565,921 $859,092 ($280,051) $579,041 Amortization expense related to intangible assets for the three months ended January 31, 2021 and 2020 was $15.2 million and $13.7 million, respectively. Amortization expense related to intangible assets for the remainder of fiscal 2021 is estimated to be $44.7 million. Amortization expense for each of the next five fiscal years and thereafter is estimated to be $53.1 million in fiscal 2022, $47.5 million in fiscal 2023, $42.6 million in fiscal 2024, $38.2 million in fiscal 2025, $33.8 million in fiscal 2026, and $138.8 million thereafter.

LONG-TERM DEBT

LONG-TERM DEBT	3 Months Ended
	Jan. 31, 2021
Debt Disclosure [Abstract]
Long-term Debt [Text Block]	LONG-TERM DEBT Long-term debt consists of the following (in thousands): January 31, 2021 October 31, 2020 Borrowings under revolving credit facility $660,000 $730,000 Finance leases and note payable 9,684 9,831 669,684 739,831 Less: Current maturities of long-term debt (1,089) (1,045) $668,595 $738,786

REVENUE

REVENUE	3 Months Ended
	Jan. 31, 2021
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 Sheet. Changes in the Company’s contract assets and liabilities for the three months ended January 31, 2021 are as follows (in thousands): January 31, 2021 October 31, 2020 Change Contract assets $57,876 $60,429 ($2,553) Contract liabilities 30,004 25,631 4,373 Net contract assets $27,872 $34,798 ($6,926) The decrease in the Company's contract assets during the first quarter of fiscal 2021 mainly occurred within the ETG and principally reflects billings on certain customer contracts made during the quarter in excess of amounts recorded as unbilled receivables on certain customer contracts using an over-time recognition model. The increase in the Company's contract liabilities during the first quarter of fiscal 2021 mainly occurred within the ETG and principally reflects the receipt during the quarter of new customer deposits on certain customer contracts in excess of reductions to contract liabilities from customer deposits recognized as revenue. The amount of revenue that the Company recognized during the first quarter of fiscal 2021 that was included in contract liabilities as of the beginning of fiscal 2021 was $11.2 million. Remaining Performance Obligations As of January 31, 2021, the Company had $486.2 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 $286.5 million of this amount during the remainder of fiscal 2021 and $199.7 million thereafter, of which the majority is expected to occur in fiscal 2022. Disaggregation of Revenue The following table summarizes the Company’s net sales by product line for each operating segment (in thousands): Three months ended January 31, 2021 2020 Flight Support Group: Aftermarket replacement parts (1) $118,434 $168,267 Repair and overhaul parts and services (2) 42,412 69,287 Specialty products (3) 38,488 63,513 Total net sales 199,334 301,067 Electronic Technologies Group: Electronic component parts primarily for defense, space and aerospace equipment (4) 167,089 160,713 Electronic component parts for equipment in various other industries (5) 56,461 47,698 Total net sales 223,550 208,411 Intersegment sales (4,982) (3,203) Total consolidated net sales $417,902 $506,275 (1) Includes various jet engine and aircraft component replacement parts. (2) 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. (3) 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. (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, three-dimensional microelectronic and stacked memory products, crashworthy and ballistically self-sealing auxiliary fuel systems, radio frequency (RF) and microwave amplifiers, transmitters and receivers, high performance communications and electronic intercept receivers and tuners, high performance active antenna systems, and technical surveillance countermeasures (TSCM) equipment. (5) Includes various component parts such as electromagnetic and radio 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. The following table summarizes the Company’s net sales by industry for each operating segment (in thousands): Three months ended January 31, 2021 2020 Flight Support Group: Aerospace $135,056 $239,923 Defense and Space 54,044 50,253 Other (1) 10,234 10,891 Total net sales 199,334 301,067 Electronic Technologies Group: Defense and Space 142,092 133,110 Other (2) 63,907 54,963 Aerospace 17,551 20,338 Total net sales 223,550 208,411 Intersegment sales (4,982) (3,203) Total consolidated net sales $417,902 $506,275 (1) Principally industrial products.

INCOME TAXES

INCOME TAXES	3 Months Ended
	Jan. 31, 2021
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	INCOME TAXES    The Company's income tax expense was $2.3 million in the first quarter of fiscal 2021, as compared to an income tax benefit of $22.9 million in the first quarter of fiscal 2020. The Company recognized a discrete tax benefit from stock option exercises in both the first quarter of fiscal 2021 and 2020 of $13.5 million and $47.6 million, respectively. The tax benefit from stock option exercises in both periods was the result of strong appreciation in HEICO's stock price during the optionees' holding periods and the $34.1 million larger benefit recognized in the first quarter of fiscal 2020 was the result of more stock options exercised.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	3 Months Ended
	Jan. 31, 2021
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 January 31, 2021 Quoted Prices Significant Significant Unobservable Inputs Total Assets: Deferred compensation plan: Corporate-owned life insurance $— $209,873 $— $209,873 Money market funds 4,322 — — 4,322 Total assets $4,322 $209,873 $— $214,195 Liabilities: Contingent consideration $— $— $42,819 $42,819 As of October 31, 2020 Quoted Prices Significant Significant Unobservable Inputs Total Assets: Deferred compensation plan: Corporate-owned life insurance $— $180,128 $— $180,128 Money market funds 11 — — 11 Total assets $11 $180,128 $— $180,139 Liabilities: Contingent consideration $— $— $41,974 $41,974 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 $212.2 million as of January 31, 2021 and $178.3 million as of October 31, 2020. 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 $27.0 million, or $21.1 million, in fiscal 2025 should the acquired entity meet certain earnings objectives during fiscal 2023 and 2024. However, should the acquired entity achieve a certain earnings objective over any two consecutive fiscal years beginning in fiscal 2021 and ending in fiscal 2023, half of the contingent consideration obligation, or CAD $13.5 million, would be payable in the following year. As of January 31, 2021, the estimated fair value of the contingent consideration was CAD $13.0 million, or $10.2 million. As part of the agreement to acquire a subsidiary by the ETG in fiscal 2020, the Company may be obligated to pay contingent consideration of up to $35.0 million in fiscal 2025 based on the earnings of the acquired entity during calendar years 2023 and 2024 provided the entity meets certain earnings objectives during each of calendar years 2021 to 2024. As of January 31, 2021, the estimated fair value of the contingent consideration was $14.4 million. The obligation to pay any contingent consideration would be payable by a consolidated subsidiary of HEICO that is 75% owned by HEICO Electronic. 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 January 31, 2021, the estimated fair value of the contingent consideration was $18.3 million. The estimated fair value of the contingent consideration arrangements described above are classified within Level 3 and were determined using probability-based scenario analyses. Under this method, a set of discrete potential future subsidiary earnings was determined using internal estimates based on various revenue growth rate assumptions for each scenario. A probability of likelihood was assigned to each discrete potential future earnings estimate and the resultant contingent consideration was calculated. The resulting probability-weighted contingent consideration amounts were discounted using a weighted average discount rate reflecting the credit risk of HEICO. Changes in either the revenue growth rates, related earnings or the discount rate could result in a material change to the amount of contingent consideration accrued and such changes will be recorded in the Company's consolidated statements of operations. The following unobservable inputs were used to derive the estimated fair value of the Company's Level 3 contingent consideration liabilities as of January 31, 2021 ($ in thousands): Unobservable Weighted Acquisition Date Fair Value Input Range Average (1) 8-18-2020 $10,193 Compound annual revenue growth rate 0% - 19% 7.0% Discount rate 4.3% - 4.5% 4.4% 8-11-2020 14,357 Compound annual revenue growth rate 4% - 18% 13.0% Discount rate 4.5% - 4.5% 4.5% 9-15-2017 18,269 Compound annual revenue growth rate (3%) - 10% 6.0% Discount rate 3.4% - 3.4% 3.4% (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 three months ended January 31, 2021 are as follows (in thousands): Liabilities Balance as of October 31, 2020 $41,974 Increase in accrued contingent consideration 432 Foreign currency transaction adjustments 413 Balance as of January 31, 2021 $42,819 The Company's contingent consideration liabilities are included in other long-term liabilities in its Condensed Consolidated Balance Sheet and the Company records changes in accrued contingent consideration and foreign currency transaction adjustments within selling, general and administrative expenses in its Condensed Consolidated Statement of Operations. 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 January 31, 2021 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	3 Months Ended
	Jan. 31, 2021
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): Three months ended January 31, 2021 2020 Numerator: Net income attributable to HEICO $70,596 $121,888 Denominator: Weighted average common shares outstanding - basic 135,210 134,523 Effect of dilutive stock options 2,532 2,898 Weighted average common shares outstanding - diluted 137,742 137,421 Net income per share attributable to HEICO shareholders: Basic $.52 $.91 Diluted $.51 $.89 Anti-dilutive stock options excluded 28 117

OPERATING SEGMENTS

OPERATING SEGMENTS	3 Months Ended
	Jan. 31, 2021
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 three months ended January 31, 2021 and 2020, respectively, is as follows (in thousands): Other, (1) Consolidated Segment FSG ETG Three months ended January 31, 2021: Net sales $199,334 $223,550 ($4,982) $417,902 Depreciation 3,450 3,059 246 6,755 Amortization 5,136 10,838 274 16,248 Operating income 25,822 60,128 (5,665) 80,285 Capital expenditures 1,988 13,521 — 15,509 Three months ended January 31, 2020: Net sales $301,067 $208,411 ($3,203) $506,275 Depreciation 3,617 2,928 255 6,800 Amortization 4,859 9,678 246 14,783 Operating income 62,045 57,491 (8,546) 110,990 Capital expenditures 4,118 2,727 5 6,850 (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 January 31, 2021 $1,122,774 $1,893,898 $548,912 $3,565,584 Total assets as of October 31, 2020 1,127,666 1,896,671 523,374 3,547,711

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	3 Months Ended
	Jan. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	COMMITMENTS AND CONTINGENCIES Guarantees As of January 31, 2021, the Company has arranged for standby letters of credit aggregating $15.6 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 three months ended January 31, 2021 and 2020, respectively, are as follows (in thousands): Three months ended January 31, 2021 2020 Balances as of beginning of fiscal year $3,015 $2,810 Accruals for warranties 175 1,007 Acquired warranty liabilities — 50 Warranty claims settled (323) (459) Balances as of January 31 $2,867 $3,408 Litigation The Company is involved in various legal actions arising in the normal course of business. Based upon the Company’s and its legal counsel’s evaluations of any claims or assessments, management is of the opinion that the outcome of these matters will not have a material adverse effect on the Company’s results of operations, financial position or cash flows.

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
	Jan. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
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, 2020. The October 31, 2020 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 three months ended January 31, 2021 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. and their respective subsidiaries; and the Electronic Technologies Group (“ETG”), consisting of HEICO Electronic Technologies Corp. (“HEICO Electronic”) and its subsidiaries. The Company's results of operations in the first quarter of fiscal 2021 continue to reflect the adverse impact from the COVID-19 global pandemic (the “Pandemic”). Most notably, demand for HEICO's commercial aviation products and services continues to be moderated by the ongoing depressed commercial aerospace market. Consolidated net sales for the Company's businesses that operate within the commercial aerospace industry decreased by approximately 43% during the first quarter of fiscal 2021, as compared to the first quarter of fiscal 2020. Looking ahead to the remainder of fiscal 2021, the extent to which the Pandemic may have a material adverse effect on the Company's future business, financial condition and results of operations will depend on many factors that are not within HEICO’s control, including but not limited to the duration, spread and severity of the Pandemic, the emergence of new coronavirus strain variants, the timing of distribution and effectiveness of COVID-19 vaccines, government responses and other actions to mitigate the spread of and to treat the Pandemic, and when and to what extent normal business, economic and social activity and conditions resume. However, the Company is cautiously optimistic that the recent vaccine progress may generate increased commercial air travel and result in a gradual recovery in demand for its commercial aerospace parts and services commencing toward the second-half of fiscal 2021.
Accounting Standards Update 2017-04 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncements, Policy [Policy Text Block]	In January 2017, the Financial Accounting Standards Board issued Accounting Standards Update "ASU" 2017-04, "Simplifying the Test for Goodwill Impairment," which is intended to simplify the current test for goodwill impairment by eliminating the second step in which the implied value of a reporting unit is calculated when the carrying value of the reporting unit exceeds its fair value. Under ASU 2017-04, goodwill impairment should be recognized for the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. The Company adopted ASU 2017-04 in the first quarter of fiscal 2021 and will apply the guidance on a prospective basis when assessing its goodwill for impairment.

SELECTED FINANCIAL STATEMENT _2

SELECTED FINANCIAL STATEMENT INFORMATION (Tables)	3 Months Ended
	Jan. 31, 2021
Selected Financial Statement Information [Abstract]
Schedule of Accounts Receivable [Table Text Block]	Accounts Receivable (in thousands) January 31, 2021 October 31, 2020 Accounts receivable $215,145 $223,171 Less: Allowance for doubtful accounts (12,827) (12,738) Accounts receivable, net $202,318 $210,433
Schedule of Inventories [Table Text Block]	Inventories (in thousands) January 31, 2021 October 31, 2020 Finished products $228,602 $235,501 Work in process 40,268 37,957 Materials, parts, assemblies and supplies 193,984 189,747 Inventories, net of valuation reserves $462,854 $463,205
Schedule of Property, Plant and Equipment [Table Text Block]	Property, Plant and Equipment (in thousands) January 31, 2021 October 31, 2020 Land $10,877 $6,678 Buildings and improvements 128,961 120,769 Machinery, equipment and tooling 269,836 265,408 Construction in progress 9,307 8,487 418,981 401,342 Less: Accumulated depreciation and amortization (241,013) (232,494) Property, plant and equipment, net $177,968 $168,848
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 three months ended January 31, 2021 and 2020 is as follows (in thousands): Three months ended January 31, 2021 2020 R&D expenses $16,181 $17,103
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): January 31, 2021 October 31, 2020 Redeemable at fair value $180,978 $179,415 Redeemable based on a multiple of future earnings 41,247 41,793 Redeemable noncontrolling interests $222,225 $221,208
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Changes in the components of accumulated other comprehensive income (loss) for the three months ended January 31, 2021 are as follows (in thousands): Foreign Currency Translation Defined Benefit Pension Plan Accumulated Balances as of October 31, 2020 ($6,460) ($2,689) ($9,149) Unrealized gain 11,244 — 11,244 Amortization of unrealized loss — 34 34 Balances as of January 31, 2021 $4,784 ($2,655) $2,129

GOODWILL AND OTHER INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)	3 Months Ended
	Jan. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill [Table Text Block]	Changes in the carrying amount of goodwill by operating segment for the three months ended January 31, 2021 are as follows (in thousands): Segment Consolidated Totals FSG ETG Balances as of October 31, 2020 $427,565 $955,602 $1,383,167 Foreign currency translation adjustments 1,903 2,768 4,671 Adjustments to goodwill (33) 241 208 Balances as of January 31, 2021 $429,435 $958,611 $1,388,046
Schedule Of Identifiable Intangible Assets [Table Text Block]	Identifiable intangible assets consist of the following (in thousands): As of January 31, 2021 As of October 31, 2020 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortizing Assets: Customer relationships $435,317 ($190,688) $244,629 $443,143 ($188,919) $254,224 Intellectual property 241,704 (89,952) 151,752 240,725 (84,686) 156,039 Licenses 6,559 (4,795) 1,764 6,559 (4,670) 1,889 Patents 1,073 (750) 323 1,071 (746) 325 Non-compete agreements 818 (818) — 811 (811) — Trade names 450 (228) 222 450 (219) 231 685,921 (287,231) 398,690 692,759 (280,051) 412,708 Non-Amortizing Assets: Trade names 167,231 — 167,231 166,333 — 166,333 $853,152 ($287,231) $565,921 $859,092 ($280,051) $579,041

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	3 Months Ended
	Jan. 31, 2021
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments [Table Text Block]	Long-term debt consists of the following (in thousands): January 31, 2021 October 31, 2020 Borrowings under revolving credit facility $660,000 $730,000 Finance leases and note payable 9,684 9,831 669,684 739,831 Less: Current maturities of long-term debt (1,089) (1,045) $668,595 $738,786

REVENUE (Tables)

REVENUE (Tables)	3 Months Ended
	Jan. 31, 2021
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 three months ended January 31, 2021 are as follows (in thousands): January 31, 2021 October 31, 2020 Change Contract assets $57,876 $60,429 ($2,553) Contract liabilities 30,004 25,631 4,373 Net contract assets $27,872 $34,798 ($6,926)
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): Three months ended January 31, 2021 2020 Flight Support Group: Aftermarket replacement parts (1) $118,434 $168,267 Repair and overhaul parts and services (2) 42,412 69,287 Specialty products (3) 38,488 63,513 Total net sales 199,334 301,067 Electronic Technologies Group: Electronic component parts primarily for defense, space and aerospace equipment (4) 167,089 160,713 Electronic component parts for equipment in various other industries (5) 56,461 47,698 Total net sales 223,550 208,411 Intersegment sales (4,982) (3,203) Total consolidated net sales $417,902 $506,275 (1) Includes various jet engine and aircraft component replacement parts. (2) 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. (3) 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. (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, three-dimensional microelectronic and stacked memory products, crashworthy and ballistically self-sealing auxiliary fuel systems, radio frequency (RF) and microwave amplifiers, transmitters and receivers, high performance communications and electronic intercept receivers and tuners, high performance active antenna systems, and technical surveillance countermeasures (TSCM) equipment. (5) Includes various component parts such as electromagnetic and radio 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.
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): Three months ended January 31, 2021 2020 Flight Support Group: Aerospace $135,056 $239,923 Defense and Space 54,044 50,253 Other (1) 10,234 10,891 Total net sales 199,334 301,067 Electronic Technologies Group: Defense and Space 142,092 133,110 Other (2) 63,907 54,963 Aerospace 17,551 20,338 Total net sales 223,550 208,411 Intersegment sales (4,982) (3,203) Total consolidated net sales $417,902 $506,275 (1) Principally industrial products.

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	3 Months Ended
	Jan. 31, 2021
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 January 31, 2021 Quoted Prices Significant Significant Unobservable Inputs Total Assets: Deferred compensation plan: Corporate-owned life insurance $— $209,873 $— $209,873 Money market funds 4,322 — — 4,322 Total assets $4,322 $209,873 $— $214,195 Liabilities: Contingent consideration $— $— $42,819 $42,819 As of October 31, 2020 Quoted Prices Significant Significant Unobservable Inputs Total Assets: Deferred compensation plan: Corporate-owned life insurance $— $180,128 $— $180,128 Money market funds 11 — — 11 Total assets $11 $180,128 $— $180,139 Liabilities: Contingent consideration $— $— $41,974 $41,974
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]	The following unobservable inputs were used to derive the estimated fair value of the Company's Level 3 contingent consideration liabilities as of January 31, 2021 ($ in thousands): Unobservable Weighted Acquisition Date Fair Value Input Range Average (1) 8-18-2020 $10,193 Compound annual revenue growth rate 0% - 19% 7.0% Discount rate 4.3% - 4.5% 4.4% 8-11-2020 14,357 Compound annual revenue growth rate 4% - 18% 13.0% Discount rate 4.5% - 4.5% 4.5% 9-15-2017 18,269 Compound annual revenue growth rate (3%) - 10% 6.0% Discount rate 3.4% - 3.4% 3.4%
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 three months ended January 31, 2021 are as follows (in thousands): Liabilities Balance as of October 31, 2020 $41,974 Increase in accrued contingent consideration 432 Foreign currency transaction adjustments 413 Balance as of January 31, 2021 $42,819

NET INCOME PER SHARE ATTRIBUT_2

NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Tables)	3 Months Ended
	Jan. 31, 2021
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): Three months ended January 31, 2021 2020 Numerator: Net income attributable to HEICO $70,596 $121,888 Denominator: Weighted average common shares outstanding - basic 135,210 134,523 Effect of dilutive stock options 2,532 2,898 Weighted average common shares outstanding - diluted 137,742 137,421 Net income per share attributable to HEICO shareholders: Basic $.52 $.91 Diluted $.51 $.89 Anti-dilutive stock options excluded 28 117

OPERATING SEGMENTS (Tables)

OPERATING SEGMENTS (Tables)	3 Months Ended
	Jan. 31, 2021
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 three months ended January 31, 2021 and 2020, respectively, is as follows (in thousands): Other, (1) Consolidated Segment FSG ETG Three months ended January 31, 2021: Net sales $199,334 $223,550 ($4,982) $417,902 Depreciation 3,450 3,059 246 6,755 Amortization 5,136 10,838 274 16,248 Operating income 25,822 60,128 (5,665) 80,285 Capital expenditures 1,988 13,521 — 15,509 Three months ended January 31, 2020: Net sales $301,067 $208,411 ($3,203) $506,275 Depreciation 3,617 2,928 255 6,800 Amortization 4,859 9,678 246 14,783 Operating income 62,045 57,491 (8,546) 110,990 Capital expenditures 4,118 2,727 5 6,850 (1) Intersegment activity principally consists of net sales from the ETG to the FSG.
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 January 31, 2021 $1,122,774 $1,893,898 $548,912 $3,565,584 Total assets as of October 31, 2020 1,127,666 1,896,671 523,374 3,547,711

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	3 Months Ended
	Jan. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of Product Warranty Liability [Table Text Block]	Changes in the Company’s product warranty liability for the three months ended January 31, 2021 and 2020, respectively, are as follows (in thousands): Three months ended January 31, 2021 2020 Balances as of beginning of fiscal year $3,015 $2,810 Accruals for warranties 175 1,007 Acquired warranty liabilities — 50 Warranty claims settled (323) (459) Balances as of January 31 $2,867 $3,408

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textuals)	3 Months Ended
	Jan. 31, 2021
Aerospace [Member]
Percent change in Revenue	43.00%

SELECTED FINANCIAL STATEMENT _3

SELECTED FINANCIAL STATEMENT INFORMATION (Accounts Receivable) (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Oct. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 215,145	$ 223,171
Less: Allowance for doubtful accounts	(12,827)	(12,738)
Accounts receivable, net	$ 202,318	$ 210,433

SELECTED FINANCIAL STATEMENT _4

SELECTED FINANCIAL STATEMENT INFORMATION (Inventories) (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Oct. 31, 2020
Inventory [Line Items]
Finished products	$ 228,602	$ 235,501
Work in process	40,268	37,957
Materials, parts, assemblies and supplies	193,984	189,747
Inventories, net of valuation reserves	$ 462,854	$ 463,205

SELECTED FINANCIAL STATEMENT _5

SELECTED FINANCIAL STATEMENT INFORMATION (Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Oct. 31, 2020
Property, Plant and Equipment [Line Items]
Land	$ 10,877	$ 6,678
Buildings and improvements	128,961	120,769
Machinery, equipment and tooling	269,836	265,408
Construction in progress	9,307	8,487
Property, plant and equipment, gross	418,981	401,342
Less: Accumulated depreciation and amortization	(241,013)	(232,494)
Property, plant and equipment, net	$ 177,968	$ 168,848

SELECTED FINANCIAL STATEMENT _6

SELECTED FINANCIAL STATEMENT INFORMATION (Research and Development Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2019
Selected Financial Statement Information (Details) [Abstract]
R&D expenses	$ 16,181	$ 17,103

SELECTED FINANCIAL STATEMENT _7

SELECTED FINANCIAL STATEMENT INFORMATION (Redeemable Noncontrolling Interests) (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Oct. 31, 2020
Redeemable Noncontrolling Interest [Line Items]
Redeemable at fair value	$ 180,978	$ 179,415
Redeemable based on a multiple of future earnings	41,247	41,793
Redeemable noncontrolling interests	$ 222,225	$ 221,208

SELECTED FINANCIAL STATEMENT _8

SELECTED FINANCIAL STATEMENT INFORMATION (Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Starting accumulated other comprehensive loss	$ (9,149)
Unrealized gain	11,244
Amortization of unrealized loss on defined benefit pension plan, net of tax	34	$ 24
Ending accumulated other comprehensive loss	2,129
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Starting accumulated other comprehensive loss	(6,460)
Unrealized gain	11,244
Ending accumulated other comprehensive loss	4,784
Pension Benefit Obligation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Starting accumulated other comprehensive loss	(2,689)
Amortization of unrealized loss on defined benefit pension plan, net of tax	34
Ending accumulated other comprehensive loss	$ (2,655)

SELECTED FINANCIAL STATEMENT _9

SELECTED FINANCIAL STATEMENT INFORMATION (Details Textuals) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Oct. 31, 2020
Selected Financial Statement Information (Details) [Abstract]
Accrued customer rebates and credits	$ 16		$ 15.8
Total customer rebates and credits deducted within net sales	$ 0.8	$ 2.1

GOODWILL AND OTHER INTANGIBLE_3

GOODWILL AND OTHER INTANGIBLE ASSETS (Goodwill) (Details) $ in Thousands	3 Months Ended
	Jan. 31, 2021USD ($)
Goodwill [Line Items]
Opening Balance	$ 1,383,167
Foreign currency translation adjustments	4,671
Adjustments to goodwill	208
Ending Balance	1,388,046
Flight Support Group [Member]
Goodwill [Line Items]
Opening Balance	427,565
Foreign currency translation adjustments	1,903
Adjustments to goodwill	(33)
Ending Balance	429,435
Electronic Technologies Group [Member]
Goodwill [Line Items]
Opening Balance	955,602
Foreign currency translation adjustments	2,768
Adjustments to goodwill	241
Ending Balance	$ 958,611

GOODWILL AND OTHER INTANGIBLE_4

GOODWILL AND OTHER INTANGIBLE ASSETS (Identifiable Intangible Assets) (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Oct. 31, 2020
Acquired Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Finite-Lived Customer Relationships, Gross	$ 435,317	$ 443,143
Finite-Lived Intellectual Property, Gross	241,704	240,725
Finite-Lived License Agreements, Gross	6,559	6,559
Finite-Lived Patents, Gross	1,073	1,071
Finite-Lived Noncompete Agreements, Gross	818	811
Finite-Lived Trade Names, Gross	450	450
Gross Carrying Amount	685,921	692,759
Indefinite-Lived Trade Names	167,231	166,333
Intangible Assets, Gross (Excluding Goodwill)	853,152	859,092
Accumulated Amortization	(287,231)	(280,051)
Net Carrying Amount	398,690	412,708
Intangible Asset Net Carrying Amount	565,921	579,041
Customer Relationships [Member]
Acquired Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Accumulated Amortization	(190,688)	(188,919)
Net Carrying Amount	244,629	254,224
Intellectual Property [Member]
Acquired Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Accumulated Amortization	(89,952)	(84,686)
Net Carrying Amount	151,752	156,039
Licensing Agreements [Member]
Acquired Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Accumulated Amortization	(4,795)	(4,670)
Net Carrying Amount	1,764	1,889
Patents [Member]
Acquired Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Accumulated Amortization	(750)	(746)
Net Carrying Amount	323	325
Noncompete Agreements [Member]
Acquired Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Accumulated Amortization	(818)	(811)
Net Carrying Amount	0	0
Trade Names [Member]
Acquired Finite Lived and Indefinite Lived Intangible Assets [Line Items]
Accumulated Amortization	(228)	(219)
Net Carrying Amount	$ 222	$ 231

GOODWILL AND OTHER INTANGIBLE_5

GOODWILL AND OTHER INTANGIBLE ASSETS (Details Textuals) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense related to intangible assets	$ 15.2	$ 13.7
Estimated Amortization Expense, remainder of fiscal year	44.7
Estimated Amortization Expense, for fiscal 2022	53.1
Estimated Amortization Expense, for fiscal 2023	47.5
Estimated Amortization Expense, for fiscal 2024	42.6
Estimated Amortization Expense, for fiscal 2025	38.2
Estimated Amortization Expense, for fiscal 2026	33.8
Estimated Amortization Expense, thereafter	$ 138.8

LONG-TERM DEBT (Details)

LONG-TERM DEBT (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Oct. 31, 2020
Borrowings under revolving credit facility	$ 660,000	$ 730,000
Finance leases and note payable	9,684	9,831
Total debt and capital leases	669,684	739,831
Current maturities of long-term debt	(1,089)	(1,045)
Long-term debt, net of current maturities	$ 668,595	$ 738,786

LONG-TERM DEBT (Details Textual

LONG-TERM DEBT (Details Textuals)	Jan. 31, 2021	Oct. 31, 2020
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Weighted average interest rate	1.20%	1.30%

REVENUE (Contract Assets and Li

REVENUE (Contract Assets and Liabilities) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2021	Oct. 31, 2020
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Contract assets	$ 57,876	$ 60,429
Contract liabilities	30,004	25,631
Net contract assets	27,872	$ 34,798
Decrease in contract assets, net	(2,553)
Increase (Decrease) in Customer Deposits	4,373
Contract with Customer, Billings in Excess of Unbilled Receivable and New Deposits in Excess of Deposits Recognized as Revenue	$ (6,926)

REVENUE (Disaggregation of Reve

REVENUE (Disaggregation of Revenue, by Product Line) (Details) - USD ($) $ in Thousands		3 Months Ended
		Jan. 31, 2021	Jan. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 417,902	$ 506,275
Flight Support Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		199,334	301,067
Flight Support Group [Member] | Aftermarket Replacement Parts [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	118,434	168,267
Flight Support Group [Member] | Repair and Overhaul Parts and Services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[2]	42,412	69,287
Flight Support Group [Member] | Specialty Products [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[3]	38,488	63,513
Electronic Technologies Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		223,550	208,411
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]	167,089	160,713
Electronic Technologies Group [Member] | Other Electronic Components [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[5]	56,461	47,698
Corporate And Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ (4,982)	$ (3,203)
[1]	Includes various jet engine and aircraft component replacement parts.
[2]	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.
[3]	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.
[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, three-dimensional microelectronic and stacked memory products, crashworthy and ballistically self-sealing auxiliary fuel systems, radio frequency (RF) and microwave amplifiers, transmitters and receivers, high performance communications and electronic intercept receivers and tuners, high performance active antenna systems, and technical surveillance countermeasures (TSCM) equipment.
[5]	Includes various component parts such as electromagnetic and radio 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.

REVENUE (Disaggregation of Re_2

REVENUE (Disaggregation of Revenue, by Industry) (Details) - USD ($) $ in Thousands		3 Months Ended
		Jan. 31, 2021	Jan. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 417,902	$ 506,275
Flight Support Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		199,334	301,067
Flight Support Group [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		135,056	239,923
Flight Support Group [Member] | Defense and Space [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		54,044	50,253
Flight Support Group [Member] | Other Industries [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	10,234	10,891
Electronic Technologies Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		223,550	208,411
Electronic Technologies Group [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		17,551	20,338
Electronic Technologies Group [Member] | Defense and Space [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		142,092	133,110
Electronic Technologies Group [Member] | Other Industries [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[2]	63,907	54,963
Corporate And Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ (4,982)	$ (3,203)
[1]	Principally industrial products.
[2]	Principally other electronics and medical products.

REVENUE (Details Textuals)

REVENUE (Details Textuals) $ in Millions	3 Months Ended
	Jan. 31, 2021USD ($)
REVENUE [Abstract]
Contract with Customer, Liability, Revenue Recognized	$ 11.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-02-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Amount	$ 486.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-02-02
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	9 months
Revenue, Remaining Performance Obligation, Amount	$ 286.5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-11-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	9 months 1 day
Revenue, Remaining Performance Obligation, Amount	$ 199.7

INCOME TAXES (Details Textuals)

INCOME TAXES (Details Textuals) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ (2,300)	$ 22,900
Tax benefit from stock option exercises recognized in the period	$ 13,500	47,600
Change in tax benefit for stock option exercises		$ 34,100

FAIR VALUE MEASUREMENTS (Fair V

FAIR VALUE MEASUREMENTS (Fair Value Hierarchy, by Category) (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Oct. 31, 2020
Deferred Compensation Plans [Abstract]
Deferred compensation plans	$ 214,195	$ 180,139
Liabilities:
Contingent consideration	42,819	41,974
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	4,322	11
Liabilities:
Contingent consideration	0	0
Significant Other Observable Inputs (Level 2) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	209,873	180,128
Liabilities:
Contingent consideration	0	0
Significant Unobservable Inputs (Level 3) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	0	0
Liabilities:
Contingent consideration	42,819	41,974
Corporate Owned Life Insurance [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	209,873	180,128
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	209,873	180,128
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	4,322	11
Money Market Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Deferred Compensation Plans [Abstract]
Deferred compensation plans	4,322	11
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 (Level

FAIR VALUE MEASUREMENTS (Level 3 Valuation Inputs) (Details) - Fair Value, Inputs, Level 3 [Member] $ in Thousands		Jan. 31, 2021USD ($)	Oct. 31, 2020USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		$ 42,819	$ 41,974
FY2020 Acquisition Subsidiary 1
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		10,193
FY2020 Acquisition Subsidiary 2
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		14,357
FY 2017 Acquisition [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value		$ 18,269
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]	0.070
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
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		0.19
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2020 Acquisition Subsidiary 2
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	[1]	0.130
Measurement Input, Long-term Revenue Growth Rate [Member] | FY2020 Acquisition Subsidiary 2 | 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] | FY2020 Acquisition Subsidiary 2 | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.18
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]	0.060
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		(0.03)
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		0.10
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]	0.044
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		0.043
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		0.045
Measurement Input, Discount Rate [Member] | FY2020 Acquisition Subsidiary 2
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	[1]	0.045
Measurement Input, Discount Rate [Member] | FY2020 Acquisition Subsidiary 2 | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.045
Measurement Input, Discount Rate [Member] | FY2020 Acquisition Subsidiary 2 | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.045
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]	0.034
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		0.034
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		0.034
[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) - Significant Unobservable Inputs (Level 3) [Member] $ in Thousands	3 Months Ended
	Jan. 31, 2021USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening balance, Liabilities	$ 41,974
Change in accrued contingent consideration	432
Ending balance, Liabilities	42,819
Foreign Currency Gain (Loss)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss)	$ 413

FAIR VALUE MEASUREMENTS (Detail

FAIR VALUE MEASUREMENTS (Details Textuals) $ in Thousands, $ in Thousands	Jan. 31, 2021USD ($)	Jan. 31, 2021CAD ($)	Oct. 31, 2020USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	$ 42,819		$ 41,974
FY2020 Acquisition Subsidiary 1 | Heico Electronic Technologies Corp
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	10,200
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 21,100
Business Acquisition, Percentage of Voting Interests Acquired	89.99%	89.99%
FY2020 Acquisition Subsidiary 1 | Heico Electronic Technologies Corp | Canada, Dollars
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities		$ 13,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		27,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low		$ 13,500
FY2020 Acquisition Subsidiary 2 | Heico Electronic Technologies Corp
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	$ 14,400
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 35,000
Business Acquisition, Percentage of Voting Interests Acquired	75.00%	75.00%
FY 2017 Acquisition [Member] | Heico Electronic Technologies Corp
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	$ 18,300
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	20,000
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	$ 212,200		$ 178,300

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
	Jan. 31, 2021	Jan. 31, 2020
Numerator:
Net income attributable to HEICO	$ 70,596	$ 121,888
Denominator:
Weighted Average Number of Shares Outstanding, Basic	135,210	134,523
Effect of dilutive stock options	2,532	2,898
Weighted Average Number of Shares Outstanding, Diluted	137,742	137,421
Earnings Per Share, Basic	$ 0.52	$ 0.91
Earnings Per Share, Diluted	$ 0.51	$ 0.89
Anti-dilutive stock options excluded	28	117

OPERATING SEGMENTS (Details)

OPERATING SEGMENTS (Details) - USD ($) $ in Thousands		3 Months Ended
		Jan. 31, 2021	Jan. 31, 2020
Segment Reporting Information [Line Items]
Revenues		$ 417,902	$ 506,275
Depreciation		6,755	6,800
Amortization		16,248	14,783
Operating income		80,285	110,990
Capital expenditures		15,509	6,850
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	(4,982)	(3,203)
Depreciation	[1]	246	255
Amortization	[1]	274	246
Operating income	[1]	(5,665)	(8,546)
Capital expenditures	[1]	0	5
Flight Support Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		199,334	301,067
Depreciation		3,450	3,617
Amortization		5,136	4,859
Operating income		25,822	62,045
Capital expenditures		1,988	4,118
Electronic Technologies Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		223,550	208,411
Depreciation		3,059	2,928
Amortization		10,838	9,678
Operating income		60,128	57,491
Capital expenditures		$ 13,521	$ 2,727
[1]	Intersegment activity principally consists of net sales from the ETG to the FSG.

OPERATING SEGMENTS (Details 1)

OPERATING SEGMENTS (Details 1) - USD ($) $ in Thousands	Jan. 31, 2021	Oct. 31, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 3,565,584	$ 3,547,711
Other Primarily Corporate and Intersegment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	548,912	523,374
Flight Support Group [Member] | Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,122,774	1,127,666
Electronic Technologies Group [Member] | Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,893,898	$ 1,896,671

COMMITMENTS AND CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Schedule of Product Warranties [Line Items]
Balances as of beginning of fiscal year	$ 3,015	$ 2,810
Accruals for warranties	175	1,007
Acquired warranty liabilities	0	50
Warranty claims settled	(323)	(459)
Balances as of end of period	$ 2,867	$ 3,408

COMMITMENTS AND CONTINGENCIES_3

COMMITMENTS AND CONTINGENCIES (Details Textuals) $ in Millions	Jan. 31, 2021USD ($)
Commitments and Contingencies Disclosure [Abstract]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 15.6