SELECTED FINANCIAL STATEMENT INFORMATION

12 Months Ended

Oct. 31, 2025

Selected Financial Statement Information [Abstract]

Additional Financial Information Disclosure [Text Block]

SELECTED FINANCIAL STATEMENT INFORMATION

Accounts Receivable

	As of October 31,
(in thousands)	2025	2024
Accounts receivable	$647,864	$550,281
Less: Allowance for doubtful accounts	(10,249)	(11,794)
Accounts receivable, net	$637,615	$538,487

Inventories

	As of October 31,
(in thousands)	2025	2024
Finished products	$715,286	$684,578
Work in process	119,611	99,107
Materials, parts, assemblies and supplies	460,439	387,264
Inventories, net of valuation reserves	$1,295,336	$1,170,949

Property, Plant and Equipment

	As of October 31,
(in thousands)	2025	2024
Land	$85,134	$19,974
Buildings and improvements	255,776	217,554
Machinery, equipment and tooling	476,735	422,500
Construction in progress	21,812	35,432
	839,457	695,460
Less: Accumulated depreciation and amortization	(407,747)	(356,426)
Property, plant and equipment, net	$431,710	$339,034

The amounts set forth above include tooling costs having a net book value of $7.6 million and $7.0 million as of October 31, 2025 and 2024, respectively. Amortization expense on capitalized tooling was $2.2 million, $2.3 million and $2.3 million in fiscal 2025, 2024 and 2023, respectively.

Depreciation and amortization expense, exclusive of tooling, on property, plant and equipment was $54.4 million, $49.1 million and $40.3 million in fiscal 2025, 2024 and 2023, respectively.

Accrued Expenses and Other Current Liabilities

	As of October 31,
(in thousands)	2025	2024
Accrued employee compensation and related payroll taxes	$240,546	$196,503
Leadership Compensation Plan short-term liabilities	103,520	5,770
Contract liabilities	79,529	83,903
Accrued customer rebates and credits	30,695	24,291
Current operating lease liabilities	25,736	23,422
Accrued interest	16,690	17,462
Other	80,908	76,430
Accrued expenses and other current liabilities	$577,624	$427,781

The increase in accrued employee compensation and related payroll taxes principally reflects higher employer payroll tax obligations arising from withholding requirements on stock option exercises and a higher level of accrued performance-based compensation resulting from improved consolidated operating results. The increase in the HEICO Corporation Leadership Compensation Plan (the "LCP") short-term liabilities primarily reflects the reclassification from other long-term liabilities of amounts expected to be distributed to certain participants in fiscal 2026 as a result of participant-related events during fiscal 2025 and prior participant distribution elections. See “Other Long-Term Assets and Liabilities” below for additional information regarding the LCP. The total customer rebates and credits deducted within net sales for fiscal 2025, 2024, and 2023 were $15.9 million, $12.0 million, and $9.4 million, respectively.

Other Long-Term Assets and Liabilities

The Company provides eligible employees, officers and directors of the Company the opportunity to voluntarily defer base salary, bonus payments, commissions, long-term incentive awards and director fees, as applicable, on a pre-tax basis through the LCP, a nonqualified deferred compensation plan that conforms to Section 409A of the Internal Revenue Code. The Company matches 50% of the first 6% of base salary deferred by each participant. Director fees that would otherwise be payable in Company common stock may be deferred into the LCP, and, when distributable, are distributed in actual shares of Company common stock. The deferred compensation obligation associated with Company common stock is recorded as a component of shareholders’ equity at cost and subsequent changes in fair value are not reflected in operations or shareholders’ equity of the Company. Further, while the Company has no obligation to do so, the LCP also provides the Company the opportunity to make discretionary contributions. The Company’s matching contributions and any discretionary contributions are subject to vesting and forfeiture provisions set forth in the LCP. Company contributions to the LCP charged to income in fiscal 2025, 2024 and 2023 totaled $7.0 million, $11.1 million and $9.2 million, respectively. The aggregate liabilities of the LCP were $385.7 million and $315.0 million as of October 31, 2025 and 2024, respectively, and are classified within other long-term liabilities and accrued expenses and other current liabilities in the Company’s Consolidated Balance Sheets. The assets of the LCP, totaling $390.9 million and $317.2 million as of October 31, 2025 and 2024, respectively, are classified within other assets in the Company's Consolidated Balance Sheets and principally represent cash surrender values of life insurance policies that are held within an irrevocable trust that may be used to satisfy the obligations of the LCP. Additional information regarding the assets of the LCP may be found in Note 8, Fair Value Measurements.

Research and Development Expenses

The amount of new product research and development ("R&D") expenses included in cost of sales is as follows (in thousands):

	Year ended October 31,
	2025	2024	2023
R&D expenses	$120,942	$111,265	$95,773

Accumulated Other Comprehensive Income (Loss)

Changes in the components of accumulated other comprehensive income (loss) during fiscal 2025 and 2024 are as follows (in thousands):

	Foreign Currency Translation	Defined Benefit Pension Plan	Accumulated Other Comprehensive Income (Loss)
Balances as of October 31, 2023	($39,165)	($1,015)	($40,180)
Unrealized gain	13,498	554	14,052
Amortization of unrealized loss	—	52	52
Balances as of October 31, 2024	(25,667)	(409)	(26,076)
Unrealized gain (loss)	31,854	(200)	31,654
Amortization of unrealized loss	—	3	3
Balances as of October 31, 2025	$6,187	($606)	$5,581