Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	4 Months Ended
	Apr. 23, 2022	Apr. 24, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 85,589	$ 71,655
Pension and postretirement plans:
Amortization of prior service cost included in net income	(41)	13
Amortization of actuarial loss included in net income	66	123
Pension and postretirement plans, net of tax	25	136
Derivative instruments:
Net change in fair value of derivatives	11,220	4,745
(Gain) loss reclassified to net income	(969)	220
Derivative instruments, net of tax	10,251	4,965
Other comprehensive income, net of tax	10,276	5,101
Comprehensive income	$ 95,865	$ 76,756