OPERATING SEGMENTS (Last three years, segment information) (Details) $ in Thousands		12 Months Ended
		Oct. 31, 2025 USD ($) segment	Oct. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales		$ (4,485,044)	$ (3,857,669)	$ (2,968,105)
Cost of Revenue		2,698,580	2,355,943	1,814,617
Operating income		1,018,998	824,455	625,339
Capital expenditures		72,886	58,261	49,434
Depreciation	[1]	54,415	49,128	40,278
Amortization	[1]	$ 141,661	126,203	89,765
Number of Reportable Segments | segment		2
Flight Support Group [Member]
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales		$ (3,115,616)	(2,638,893)	(1,769,985)
Electronic Technologies Group [Member]
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales		(1,369,428)	(1,218,776)	(1,198,120)
Corporate Segment
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales	[2]	0	0	0
Intersegment Eliminations
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales	[3]	45,353	45,311	27,302
Cost of Revenue	[3]	(42,312)	(42,271)	(26,982)
Segment Reporting, Other Segment Item, Amount	[3],[4]	0	0	0
Operating income	[3]	(3,041)	(3,040)	(320)
Capital expenditures	[3]	0	0	0
Depreciation	[1],[3]	0	0	0
Amortization	[1],[3]	0	0	0
Intersegment Eliminations | Flight Support Group [Member]
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales		1,661	461	200
Intersegment Eliminations | Electronic Technologies Group [Member]
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales		43,692	44,850	27,102
Intersegment Eliminations | Corporate Segment
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales	[2]	0	0	0
Operating Segments [Member] | Flight Support Group [Member]
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales		(3,117,277)	(2,639,354)	(1,770,185)
Cost of Revenue		1,928,042	1,671,596	1,130,703
Segment Reporting, Other Segment Item, Amount	[4]	438,840	374,684	252,185
Operating income		750,395	593,074	387,297
Capital expenditures		32,342	27,498	22,775
Depreciation	[1]	26,901	25,153	18,699
Amortization	[1]	$ 83,799	73,640	36,957
Segment Reporting, Other Segment Item, Composition, Description		Represents SG&A expenses.
Operating Segments [Member] | Electronic Technologies Group [Member]
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales		$ (1,413,120)	(1,263,626)	(1,225,222)
Cost of Revenue		812,850	726,618	710,896
Segment Reporting, Other Segment Item, Amount	[4]	275,318	248,815	229,273
Operating income		324,952	288,193	285,053
Capital expenditures		25,078	29,864	26,493
Depreciation	[1]	25,536	22,731	20,478
Amortization	[1]	$ 56,293	50,994	51,296
Segment Reporting, Other Segment Item, Composition, Description		Represents SG&A expenses.
Operating Segments [Member] | Corporate Segment
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Net sales	[2]	$ 0	0	0
Cost of Revenue	[2]	0	0	0
Segment Reporting, Other Segment Item, Amount	[2],[4]	0	0	0
Operating income	[2]	(53,308)	(53,772)	(46,691)
Capital expenditures	[2]	15,466	899	166
Depreciation	[1],[2]	1,978	1,244	1,101
Amortization	[1],[2]	$ 1,569	$ 1,569	$ 1,512
Segment Reporting, Other Segment Item, Composition, Description		Represents SG&A expenses.
Operating Segments [Member] | Other Operating Segment
Segment Reporting, Reconciling Item For Operating Profit (Loss) and Capital Expenditure From Segment To Consolidated [Line Items]
Number of Operating Segments | segment		2

[1] Depreciation and amortization expense disclosed by reportable segment are included within cost of sales and other segment items.

[2] Corporate activity consists of unallocated corporate general and administrative expenses.

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

[4] Represents SG&A expenses.