Valuation And Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Contract Reserves
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	$ 72,412	$ 60,914	$ 48,818
Additions charged to expenses and other accounts	41,572	76,747	45,464
Deductions	55,377	66,885	35,714
Foreign exchange impact and other	250	1,636	2,346
Balance at end of year	58,857	72,412	60,914
Allowance for Credit Losses
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	6,313	5,402	4,959
Additions charged to expenses and other accounts	2,245	3,774	1,522
Deductions	4,238	3,144	891
Foreign exchange impact and other	31	281	(188)
Balance at end of year	4,351	6,313	5,402
Reserve for Inventory Valuation
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	153,311	134,185	125,316
Additions charged to expenses and other accounts	26,513	52,956	23,227
Deductions	25,151	35,747	12,716
Foreign exchange impact and other	982	1,917	(1,642)
Balance at end of year	155,655	153,311	134,185
Deferred Tax Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	14,784	13,137	15,181
Additions charged to expenses and other accounts	2,513	2,003	274
Deductions	3,729	860	1,808
Foreign exchange impact and other	328	504	(510)
Balance at end of year	$ 13,896	$ 14,784	$ 13,137