GOODWILL AND OTHER INTANGIBLE ASSETS, Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Oct. 31, 2018	Oct. 31, 2017
Goodwill [Roll Forward]
Opening Balances	$ 1,081,306	$ 865,717
Goodwill acquired	38,320	209,863
Foreign currency translation adjustments	2,763	(5,726)
Adjustments to goodwill	(2,031)
Ending Balances	1,114,832	1,081,306
Flight Support Group [Member]
Goodwill [Roll Forward]
Opening Balances	388,606	336,681
Goodwill acquired	10,586	48,960
Foreign currency translation adjustments	1,470	(2,965)
Adjustments to goodwill	972
Ending Balances	398,694	388,606
Electronic Technologies Group [Member]
Goodwill [Roll Forward]
Opening Balances	692,700	529,036
Goodwill acquired	27,734	160,903
Foreign currency translation adjustments	1,293	(2,761)
Adjustments to goodwill	(3,003)
Ending Balances	$ 716,138	$ 692,700

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 increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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