Retirement and Other Benefit Plans - Components of Net Periodic Benefit Income (Details) - USD ($) $ in Thousands	3 Months Ended
	May 01, 2021	May 02, 2020
Pension Plan
Retirement and Other Benefit Plans
Service cost	$ 1,942	$ 2,160
Interest cost	2,813	3,154
Expected return on assets	(7,114)	(7,443)
Actuarial loss (gain)	615	1,083
Prior service credit	(125)	(350)
Total net periodic benefit income	(1,869)	(1,396)
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)	(27)	(39)
Prior service credit	0	0
Total net periodic benefit income	$ (17)	$ (29)