OPERATING SEGMENTS (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024
Segment Reporting Information [Line Items]
Revenues		$ 1,097,820	$ 955,395	$ 2,128,042	$ 1,851,758
Depreciation		13,168	11,269	26,216	23,599
Amortization		35,709	31,562	68,886	62,737
Operating Income (Loss)		248,152	209,153	474,957	389,363
Capital expenditures		15,964	12,948	33,299	26,325
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	(11,417)	(11,159)	(24,684)	(19,454)
Depreciation	[1]	498	305	999	609
Amortization	[1]	393	392	785	784
Operating Income (Loss)	[1]	(14,708)	(14,986)	(30,475)	(26,195)
Capital expenditures	[1]	7	112	7	583
Flight Support Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		767,070	647,232	1,480,244	1,265,948
Depreciation		6,609	5,442	13,187	11,929
Amortization		21,840	18,447	41,094	36,304
Operating Income (Loss)		184,980	148,876	351,096	284,967
Capital expenditures		8,768	5,982	19,014	12,714
Electronic Technologies Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		342,167	319,322	672,482	605,264
Depreciation		6,061	5,522	12,030	11,061
Amortization		13,476	12,723	27,007	25,649
Operating Income (Loss)		77,880	75,263	154,336	130,591
Capital expenditures		$ 7,189	$ 6,854	$ 14,278	$ 13,028

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