Valuation And Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Contract Reserves
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	$ 81,180	$ 62,975	$ 66,288
Additions charged to expenses and other accounts	65,755	133,180	80,180
Deductions	62,146	114,880	83,421
Foreign exchange impact and other	(429)	(95)	(72)
Balance at end of year	84,360	81,180	62,975
Allowance for Credit Losses
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	3,073	4,010	4,608
Additions charged to expenses and other accounts	808	1,117	1,786
Deductions	1,316	2,145	2,200
Foreign exchange impact and other	38	91	(184)
Balance at end of year	2,603	3,073	4,010
Reserve for Inventory Valuation
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	149,114	141,799	140,605
Additions charged to expenses and other accounts	27,734	21,576	20,286
Deductions	31,218	16,903	21,336
Foreign exchange impact and other	501	2,642	2,244
Balance at end of year	146,131	149,114	141,799
Deferred Tax Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	10,905	6,430	8,650
Additions charged to expenses and other accounts	2,571	4,693	2,454
Deductions	1,159	218	4,254
Foreign exchange impact and other	0	0	(420)
Balance at end of year	$ 12,317	$ 10,905	$ 6,430