Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 12, 2020	Apr. 14, 2019	Apr. 12, 2020	Apr. 14, 2019
Statement of Comprehensive Income [Abstract]
Net earnings	$ 11,463	$ 25,089	$ 19,360	$ 59,187
Net change in fair value of derivatives	0	(4,959)	0	(12,126)
Net loss reclassified to earnings	0	134	0	613
Cash flow hedges, before tax	0	(4,825)	0	(11,513)
Tax effect	0	1,244	0	2,967
Cash flow hedges, net	0	(3,581)	0	(8,546)
Actuarial losses arising during the period	(61,090)	0	(32,507)	0
Actuarial losses and prior service costs reclassified to earnings	1,362	904	41,672	2,109
Unrecognized periodic benefit costs	(59,728)	904	9,165	2,109
Tax effect	15,503	(234)	(2,379)	(545)
Unrecognized periodic benefit costs	(44,225)	670	6,786	1,564
Other comprehensive (loss) income, net of taxes	(44,225)	(2,911)	6,786	(6,982)
Comprehensive (loss) income	$ (32,762)	$ 22,178	$ 26,146	$ 52,205