ACQUISITIONS ACQUISITIONS (Details 2) - USD ($) $ in Thousands	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Assets acquired:
Goodwill	$ 1,081,306	$ 865,717	$ 766,639
Electronic Technologies Group [Member]
Assets acquired:
Goodwill	692,700	$ 529,036	$ 429,132
Electronic Technologies Group [Member] | AAT [Member]
Assets acquired:
Goodwill	160,903
Accounts receivable	6,115
Inventories	5,923
Property, plant and equipment	1,246
Other assets	208
Total assets acquired, excluding cash	333,395
Liabilities assumed:
Accounts payable	1,290
Accrued expenses	1,456
Total liabilities assumed	2,746
Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	330,649
Customer Relationships [Member] | Electronic Technologies Group [Member] | AAT [Member]
Assets acquired:
Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	100,000
Intellectual Property [Member] | Electronic Technologies Group [Member] | AAT [Member]
Assets acquired:
Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	39,000
Trade Names [Member] | Electronic Technologies Group [Member] | AAT [Member]
Assets acquired:
Identifiable intangible assets	$ 20,000