CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED - USD ($) $ in Thousands	6 Months Ended
	Apr. 30, 2025	Apr. 30, 2024
Operating Activities:
Net income from consolidated operations	$ 352,089	$ 260,383
Adjustments to reconcile net income from consolidated operations to net cash provided by (used in) operating activities:
Depreciation and amortization	95,102	86,336
Share-based compensation expense	10,671	9,463
Employer contributions to HEICO Savings and Investment Plan	8,500	8,802
Change in value of contingent consideration	6,766	(5,326)
Deferred income tax provision (benefit)	(17,940)	(11,532)
Payment for Contingent Consideration Liability, Operating Activities	(2,190)	(6,203)
Changes in operating assets and liabilities, net of acquisitions:
Change in accounts receivable	(40,361)	5,309
Change in contract assets	(12,319)	3,172
Change in inventories	(46,134)	(71,103)
Change in prepaid expenses and other current assets	4,535	(9,243)
Change in trade accounts payable	29,193	(11,406)
Change in accrued expenses and other current liabilities	(39,266)	(58,102)
Change in income taxes payable	10,599	(6,830)
Change in other long-term liabilities and assets related to HEICO Leadership Compensation Plan	16,555	17,319
Other	31,929	41,753
Net cash provided by operating activities	407,729	252,792
Investing Activities:
Acquisitions, net of cash acquired	(286,161)	(46,208)
Capital expenditures	(33,299)	(26,325)
Net Investment Related to Deferred Compensation Plan	(17,700)	(14,410)
Other	(2,599)	1,657
Net cash used in investing activities	(339,759)	(85,286)
Financing Activities:
Borrowings on revolving credit facility	145,000	50,000
Payments on revolving credit facility	(95,000)	(125,000)
Distributions to noncontrolling interests	(17,563)	(15,372)
Cash dividends paid	(15,272)	(13,831)
Payment for Contingent Consideration Liability, Financing Activities	(5,954)	(13,797)
Payments to Noncontrolling Interests	(4,205)	(3,165)
Common Stock Issued Repurchased and Retired Related To Stock Option Exercises	(1,415)	(2,352)
Repayments of Short-Term Debt	0	(13,924)
Proceeds from stock option exercises	5,786	4,151
Other	(2,114)	(1,905)
Net cash (used in) provided by financing activities	9,263	(135,195)
Effect of exchange rate changes on cash	2,973	802
Net (decrease) increase in cash and cash equivalents	80,206	33,113
Cash and cash equivalents at beginning of year	162,103	171,048
Cash and cash equivalents at end of period	$ 242,309	$ 204,161