GOODWILL AND OTHER INTANGIBLE ASSETS (Goodwill) (Details) $ in Thousands	9 Months Ended
	Jul. 31, 2025 USD ($)
Goodwill [Line Items]
Opening Balance	$ 3,380,295
Goodwill acquired	252,172
Foreign currency translation adjustments	13,584
Adjustments to goodwill	55
Ending Balance	3,646,106
Flight Support Group [Member]
Goodwill [Line Items]
Opening Balance	1,882,558
Goodwill acquired	110,301
Foreign currency translation adjustments	2,378
Adjustments to goodwill	24
Ending Balance	1,995,261
Electronic Technologies Group [Member]
Goodwill [Line Items]
Opening Balance	1,497,737
Goodwill acquired	141,871
Foreign currency translation adjustments	11,206
Adjustments to goodwill	31
Ending Balance	$ 1,650,845

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

HEICO CORP 10-Q