CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Operating Activities:
Net income from consolidated operations	$ 444,383	$ 390,623	$ 329,758
Adjustments to reconcile net income from consolidated operations to net cash provided by operating activities:
Depreciation and amortization	130,043	96,333	93,019
Share-based compensation expense	15,475	12,646	9,058
Employer contributions to HEICO Savings and Investment Plan	15,276	12,180	10,091
Business Combination, Reversal of Remaining Contingent Consideration, Liability	(9,057)	0	0
Payment for Contingent Consideration Liability, Operating Activities	(6,299)	0	0
Change in accrued contingent consideration	(686)	(7,631)	1,246
Deferred Income Tax Expense (Benefit)	(26,531)	8,876	(15,635)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(65,595)	(29,272)	(27,300)
Contract assets	(11,642)	(4,148)	376
Inventories	(124,782)	(89,186)	(10,121)
Prepaid expenses and other current assets	5,599	(10,077)	(4,795)
Trade accounts payable	10,975	25,567	6,907
Accrued expenses and other current liabilities	72,589	34,122	33,634
Income taxes payable	(4,505)	11,597	2,821
Change in long-term liabilities and assets related to HEICO LCP	13,512	15,398	12,781
Other	(10,020)	828	2,244
Net cash provided by operating activities	448,735	467,856	444,084
Investing Activities:
Acquisitions, net of cash acquired	(2,421,788)	(347,308)	(136,500)
Capital expenditures	(49,434)	(31,982)	(36,183)
Net Investment Related to HEICO LCP	(18,892)	(15,300)	(14,000)
Other	5,647	(1,239)	3,229
Net cash used in investing activities	(2,484,467)	(395,829)	(183,454)
Financing Activities:
Proceeds from Issuance of Senior Long-Term Debt	1,189,452	0	0
Borrowings on revolving credit facility	1,964,000	262,000	0
Payments on revolving credit facility	(989,000)	(212,000)	(505,000)
Distributions to noncontrolling interests	(36,591)	(25,092)	(27,963)
Cash dividends paid	(27,370)	(24,466)	(23,002)
Redemption of common stock related to stop option exercises	(14,847)	(25,946)	(3,791)
Payment for Contingent Consideration Liability, Financing Activities	(12,610)	(320)	0
Revolving credit facility issuance costs	(10,060)	(1,010)	(1,468)
Acquisitions of noncontrolling interests	(2,733)	(8,735)	(2,336)
Proceeds from stock option exercises	6,713	2,352	5,344
Proceeds from Noncontrolling Interests	0	0	534
Other	(1,905)	(616)	(1,286)
Net cash (used in) provided by financing activities	2,065,049	(33,833)	(558,968)
Effect of exchange rate changes on cash	2,227	(6,988)	(216)
Net increase (decrease) in cash and cash equivalents	31,544	31,206	(298,554)
Cash and cash equivalents at beginning of year	139,504	108,298	406,852
Cash and cash equivalents at end of year	$ 171,048	$ 139,504	$ 108,298