GOODWILL AND OTHER INTANGIBLE ASSETS (Goodwill) (Details) $ in Thousands	9 Months Ended
Jul. 31, 2019 USD ($)
Goodwill [Line Items]
Opening Balance	$ 1,114,832
Goodwill acquired	151,157
Foreign currency translation adjustments	(2,391)
Adjustments to goodwill	(125)
Ending Balance	1,263,473
Flight Support Group [Member]
Goodwill [Line Items]
Opening Balance	398,694
Goodwill acquired	12,912
Foreign currency translation adjustments	(1,535)
Adjustments to goodwill	(125)
Ending Balance	409,946
Electronic Technologies Group [Member]
Goodwill [Line Items]
Opening Balance	716,138
Goodwill acquired	138,245
Foreign currency translation adjustments	(856)
Ending Balance	$ 853,527

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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