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Property, Plant And Equipment Property, Plant And Equipment (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended	9 Months Ended		12 Months Ended
	Jun. 28, 2025	Jun. 29, 2024	Mar. 30, 2024	Mar. 30, 2024	Jun. 28, 2025	Jun. 29, 2024	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges	$ 3,000	$ 112	$ 6,750	$ 6,750	$ 3,000	$ 6,862	$ 5,374	$ 22,149	$ 14,628
Accrued Liabilities
Government Assistance [Line Items]
Government Assistance, Liability							1,117
Property, Plant and Equipment
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Asset Impairment Charges							2,374	806	$ 5,301
Government Assistance [Line Items]
Government Assistance, Award Amount							2,222	$ 6,243
Government Assistance, Asset, Decrease							$ 1,105