REVENUE (Disaggregation of Revenue, by Industry) (Details) - USD ($) $ in Thousands		12 Months Ended
		Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		$ 2,055,647	$ 1,777,721	$ 1,524,813
Flight Support Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		1,240,183	1,097,937	967,540
Flight Support Group [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		1,004,088	890,059	781,344
Flight Support Group [Member] | Defense and Space [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		190,076	163,330	146,708
Flight Support Group [Member] | Other Industries [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	[1]	46,019	44,548	39,488
Electronic Technologies Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		834,522	701,827	574,261
Electronic Technologies Group [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		85,604	71,235	48,832
Electronic Technologies Group [Member] | Defense and Space [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		531,029	452,714	368,234
Electronic Technologies Group [Member] | Other Industries [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	[2]	217,889	177,878	157,195
Corporate And Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer		$ (19,058)	$ (22,043)	$ (16,988)

[1] ⁽¹⁾  Principally industrial products.

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