Retirement and Other Benefit Plans (Shedule of Net Benefit Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	May 04, 2019	May 05, 2018
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,854	$ 2,382
Interest cost	3,725	3,541
Expected return on assets	(6,892)	(7,232)
Amortization of:
Actuarial loss (gain)	928	1,013
Prior service income	(365)	(398)
Total net periodic benefit income	(750)	(694)
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Interest cost	15	15
Amortization of:
Actuarial loss (gain)	(30)	(30)
Total net periodic benefit income	$ (15)	$ (15)