RETIREMENT AND OTHER BENEFIT PLANS - Components of Net Periodic Benefit Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Pension Benefits
Retirement and Other Benefit Plans
Service cost	$ 2,005	$ 1,805	$ 6,412	$ 5,414
Interest cost	2,970	3,707	9,252	11,112
Expected return on assets	(8,330)	(6,933)	(23,205)	(20,792)
Actuarial loss (gain)	240	977	2,506	2,929
Prior service income	(324)	(372)	(1,031)	(1,115)
Settlement cost			222	0
Curtailment gain			(189)	0
Total net periodic benefit income	(3,439)	(816)	(6,033)	(2,452)
Other Postretirement Benefits
Retirement and Other Benefit Plans
Service cost	0	0	0	0
Interest cost	10	15	31	45
Expected return on assets	0	0	0	0
Actuarial loss (gain)	(27)	(27)	(82)	(81)
Prior service income	0	0	0	0
Settlement cost			0	0
Curtailment gain			0	0
Total net periodic benefit income	$ (17)	$ (12)	$ (51)	$ (36)