RETIREMENT PLANS - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Jul. 10, 2022		Jul. 04, 2021		Jul. 10, 2022		Jul. 04, 2021
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 3,388		$ 3,398		$ 11,292		$ 11,328
Expected return on plan assets	(4,179)		(4,463)		(13,926)		(14,877)
Actuarial loss (gain)	890	[1]	1,212	[1]	2,968	[1]	4,041
Amortization of unrecognized prior service cost	5	[1]	5	[1]	15	[1]	15
Net periodic benefit cost	104		152		349		507
Postretirement Healthcare Plans
Defined Benefit Plan Disclosure [Line Items]
Interest cost	113		130		376		433
Actuarial loss (gain)	(147)	[1]	(78)	[1]	(492)	[1]	(262)
Net periodic benefit cost	$ (34)		$ 52		$ (116)		$ 171

[1] Amounts were reclassified from accumulated other comprehensive income into net earnings as a component of “Other pension and post-retirement expenses, net