Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2022	Oct. 03, 2021	Sep. 27, 2020
Statement of Comprehensive Income [Abstract]
Net earnings	$ 115,781	$ 165,755	$ 89,764
Other comprehensive income:
Actuarial gains (losses) arising during the period	24,249	44,134	(4,875)
Actuarial losses and prior service cost reclassified to earnings	3,238	4,931	44,616
Other comprehensive income, before tax	27,487	49,065	39,741
Tax effect	(7,215)	(12,714)	(10,340)
Other comprehensive income, net of taxes	20,272	36,351	29,401
Comprehensive income	$ 136,053	$ 202,106	$ 119,165