OPERATING SEGMENTS (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Segment Reporting Information [Line Items]
Revenues		$ 1,147,591	$ 992,246	$ 3,275,633	$ 2,844,004
Depreciation		14,149	12,640	40,365	36,239
Amortization		35,618	31,670	104,504	94,407
Operating Income (Loss)		265,019	216,446	739,976	605,809
Capital expenditures		12,739	15,850	46,038	42,175
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	(10,933)	(11,509)	(35,617)	(30,963)
Depreciation	[1]	497	312	1,496	921
Amortization	[1]	392	393	1,177	1,177
Operating Income (Loss)	[1]	(14,305)	(12,936)	(44,780)	(39,131)
Capital expenditures	[1]	62	84	69	667
Flight Support Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		802,661	681,626	2,282,905	1,947,574
Depreciation		7,096	6,683	20,283	18,612
Amortization		21,485	18,622	62,579	54,926
Operating Income (Loss)		198,326	153,594	549,422	438,561
Capital expenditures		7,224	7,925	26,238	20,639
Electronic Technologies Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		355,863	322,129	1,028,345	927,393
Depreciation		6,556	5,645	18,586	16,706
Amortization		13,741	12,655	40,748	38,304
Operating Income (Loss)		80,998	75,788	235,334	206,379
Capital expenditures		$ 5,453	$ 7,841	$ 19,731	$ 20,869

[1] Intersegment activity principally consists of net sales from the ETG to the FSG