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ACQUISITIONS ACQUISITIONS (Details 2) - USD ($) $ in Thousands	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Assets acquired:
Goodwill	$ 1,114,832	$ 1,081,306	$ 865,717
Inventories	8,306
Electronic Technologies Group [Member]
Assets acquired:
Goodwill	716,138	$ 692,700	$ 529,036
Electronic Technologies Group [Member] \| AAT [Member]
Assets acquired:
Goodwill	157,901
Accounts receivable	6,115
Property, plant and equipment	1,893
Other assets	208
Total assets acquired, excluding cash	333,423
Liabilities assumed:
Accounts payable	1,299
Accrued expenses	1,151
Total liabilities assumed	2,450
Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	330,973
Electronic Technologies Group [Member] \| AAT [Member] \| Trade Names [Member]
Assets acquired:
Identifiable intangible assets, indefinite-lived	20,000
Electronic Technologies Group [Member] \| AAT [Member] \| Customer Relationships [Member]
Assets acquired:
Identifiable intangible assets, finite-lived	100,000
Electronic Technologies Group [Member] \| AAT [Member] \| Intellectual Property [Member]
Assets acquired:
Identifiable intangible assets, finite-lived	$ 39,000