CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2023
Operating Activities:
Net income from consolidated operations	$ 745,554	$ 559,086	$ 444,383
Adjustments to reconcile net income from consolidated operations to net cash provided by operating activities:
Depreciation and amortization	196,076	175,331	130,043
Share-based compensation expense	34,381	18,775	15,475
Employer contributions to HEICO Savings and Investment Plan	20,441	17,617	15,276
Change in accrued contingent consideration	12,920	(9,884)	(686)
Impairment of Intangible Assets	0	7,500	0
Amendment and termination of contingent consideration agreement	0	0	(9,057)
Payment for Contingent Consideration Liability, Operating Activities	(2,190)	(6,203)	(6,299)
Deferred Income Tax Expense (Benefit)	(48,565)	(22,002)	(26,531)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(75,576)	(20,815)	(65,595)
Contract assets	(6,510)	1,294	(11,642)
Inventories	(44,850)	(132,934)	(124,782)
Prepaid expenses and other current assets	15,423	(23,029)	5,599
Trade accounts payable	27,593	(9,823)	10,975
Accrued expenses and other current liabilities	44,605	22,095	72,589
Income taxes payable	(19,427)	20,220	(4,505)
Change in long-term liabilities and assets related to HEICO LCP	23,533	21,618	13,512
Other	10,858	53,524	(10,020)
Net cash provided by operating activities	934,266	672,370	448,735
Investing Activities:
Acquisitions, net of cash acquired	(629,828)	(219,293)	(2,421,788)
Capital expenditures	(72,886)	(58,261)	(49,434)
Net Investment Related to HEICO LCP	(32,958)	(19,910)	(18,892)
Other	3,981	4,264	5,647
Net cash used in investing activities	(731,691)	(293,200)	(2,484,467)
Financing Activities:
Payments on revolving credit facility	(550,000)	(365,000)	(989,000)
Proceeds from Issuance of Senior Long-Term Debt	0	0	1,189,452
Borrowings on revolving credit facility	495,000	130,000	1,964,000
Distributions to noncontrolling interests	(38,484)	(34,318)	(36,591)
Cash dividends paid	(31,968)	(29,069)	(27,370)
Redemption of common stock related to stop option exercises	(22,386)	(29,912)	(14,847)
Payment for Contingent Consideration Liability, Financing Activities	(5,954)	(24,797)	(12,610)
Acquisitions of noncontrolling interests	(5,773)	(26,567)	(2,733)
Payments on short-term debt, net	0	(13,924)	(1,593)
Debt issuance costs	0	0	(10,060)
Proceeds from stock option exercises	13,212	7,951	6,713
Other	(4,324)	(3,757)	(312)
Net cash (used in) provided by financing activities	(150,677)	(389,393)	2,065,049
Effect of exchange rate changes on cash	3,780	1,278	2,227
Net increase (decrease) in cash and cash equivalents	55,678	(8,945)	31,544
Cash and cash equivalents at beginning of year	162,103	171,048	139,504
Cash and cash equivalents at end of year	$ 217,781	$ 162,103	$ 171,048