REVENUE (Disaggregation of Revenue, by Industry) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		$ 532,324	$ 465,825	$ 1,514,118	$ 1,300,837
Flight Support Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		320,016	285,126	915,480	807,683
Flight Support Group [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		258,157	230,633	742,555	660,307
Flight Support Group [Member] | Defense and Space [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		49,769	43,009	137,272	114,103
Flight Support Group [Member] | Other Industries [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	[1]	12,090	11,484	35,653	33,273
Electronic Technologies Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		216,129	186,370	615,009	510,750
Electronic Technologies Group [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		20,729	16,146	62,900	46,604
Electronic Technologies Group [Member] | Defense and Space [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		138,875	125,375	390,046	331,587
Electronic Technologies Group [Member] | Other Industries [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	[2]	56,525	44,849	162,063	132,559
Corporate And Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		$ (3,821)	$ (5,671)	$ (16,371)	$ (17,596)

[1] ⁽¹⁾  Principally industrial products.

[2] ⁽²⁾  Principally other electronics and medical products.