Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 05, 2020	Jul. 07, 2019	Jul. 05, 2020	Jul. 07, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 32,555	$ 13,189	$ 51,915	$ 72,376
Net change in fair value of derivatives	0	(11,499)	0	(23,625)
Net loss reclassified to earnings	0	23,715	0	24,328
Cash flow hedges, before tax	0	12,216	0	703
Tax effect	0	(6,132)	0	(3,165)
Cash flow hedges, net	0	6,084	0	(2,462)
Actuarial income (losses) arising during the period	19,666	0	(12,841)	0
Actuarial losses and prior service costs reclassified to earnings	1,494	904	43,166	3,013
Unrecognized periodic benefit costs	21,160	904	30,325	3,013
Tax effect	(5,493)	(232)	(7,872)	(777)
Unrecognized periodic benefit costs	15,667	672	22,453	2,236
Other comprehensive income (loss), net of taxes	15,667	6,756	22,453	(226)
Comprehensive income	$ 48,222	$ 19,945	$ 74,368	$ 72,150