Retirement and Other Benefit Plans (Shedule of Net Benefit Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 03, 2018	Oct. 28, 2017	Nov. 03, 2018	Oct. 28, 2017
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2,240	$ 2,426	$ 6,717	$ 7,276
Interest cost	3,546	3,736	10,636	11,210
Expected return on assets	(7,253)	(6,896)	(21,757)	(20,689)
Amortization of:
Actuarial loss (gain)	1,030	1,090	3,092	3,238
Prior service income	(392)	(439)	(1,176)	(1,335)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment		36		36
Total net periodic benefit income	(829)	(47)	(2,488)	(264)
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Interest cost	15	17	44	51
Amortization of:
Actuarial loss (gain)	(31)	(36)	(93)	(109)
Total net periodic benefit income	$ (16)	$ (19)	$ (49)	$ (58)