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Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Oct. 01, 2021	Oct. 02, 2020	Sep. 27, 2019	Sep. 28, 2018
Statement of Stockholders' Equity [Abstract]
Disposition of business, deferred taxes			$ 5,402
Deferred tax from ASC 606				$ (10,825)
Change in pension and retiree medical plan liabilities	$ 37,970	$ (13,357)	25,348
Gain (loss) on derivative deferred taxes	7,357	(7,285)	568
Foreign currency translation adjustment	$ 3,110	$ 3,722	$ 0

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