Retirement and Other Benefit Plans - Components of Net Periodic Benefit Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2022	May 01, 2021
Pension Plan
Retirement and Other Benefit Plans
Service cost	$ 1,762	$ 1,942
Interest cost	2,971	2,813
Expected return on assets	(6,984)	(7,114)
Actuarial loss (gain)	681	615
Prior service income	(75)	(125)
Total net periodic benefit income	(1,645)	(1,869)
Other Postretirement Benefits Plan
Retirement and Other Benefit Plans
Service cost	0	0
Interest cost	10	10
Expected return on assets	0	0
Actuarial loss (gain)	(25)	(27)
Prior service income	0	0
Total net periodic benefit income	$ (15)	$ (17)