GOODWILL AND OTHER INTANGIBLE ASSETS, Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Oct. 31, 2020	Oct. 31, 2019
Goodwill [Roll Forward]
Opening Balances	$ 1,268,703	$ 1,114,832
Goodwill acquired	114,380	156,177
Foreign currency translation adjustments	(4,618)	2,345
Deconsolidation of subsidiary	(4,249)
Adjustments to goodwill	(285)	39
Ending Balances	1,383,167	1,268,703
Flight Support Group [Member]
Goodwill [Roll Forward]
Opening Balances	410,044	398,694
Goodwill acquired	14,979	12,891
Foreign currency translation adjustments	(2,542)	1,580
Adjustments to goodwill		39
Ending Balances	427,565	410,044
Electronic Technologies Group [Member]
Goodwill [Roll Forward]
Opening Balances	858,659	716,138
Goodwill acquired	99,401	143,286
Foreign currency translation adjustments	(2,076)	765
Deconsolidation of subsidiary	(4,249)
Adjustments to goodwill	(285)
Ending Balances	$ 955,602	$ 858,659

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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