EMPLOYEE BENEFIT PLANS (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Employee benefit plans
Accumulated benefit obligation	$ 220,537	$ 198,360
Other changes in plan assets and benefit obligations recognized in OCI before taxes:
Actuarial net loss (gain)	33,212	(18,077)	5,270
Recognition of net actuarial (loss) gain	(3,255)	(6,203)	(6,384)
Pension Benefits
Net periodic benefit expense (income):
Interest cost	7,990	7,993	8,468
Expected return on plan assets	(9,959)	(8,942)	(8,628)
Recognition of net actuarial loss (gain)	3,774	6,566	6,758
Net periodic benefit expense (income)	1,805	5,617	6,598
Other changes in plan assets and benefit obligations recognized in OCI before taxes:
Actuarial net loss (gain)	33,261	(17,013)	5,374
Recognition of net actuarial (loss) gain	(3,774)	(6,566)	(6,758)
Total recognized in OCI before taxes	29,487	(23,579)	(1,384)
Total recognized in net periodic cost and OCI before taxes	31,292	(17,962)	5,214
Estimated amount that will be amortized from AOCI to net periodic cost
Net actuarial loss (gain)	6,792
Medical and Life Insurance Benefits
Net periodic benefit expense (income):
Interest cost	89	122	142
Recognition of net actuarial loss (gain)	(519)	(363)	(374)
Net periodic benefit expense (income)	(430)	(241)	(232)
Other changes in plan assets and benefit obligations recognized in OCI before taxes:
Actuarial net loss (gain)	(49)	(1,064)	(104)
Recognition of net actuarial (loss) gain	519	363	374
Total recognized in OCI before taxes	470	(701)	270
Total recognized in net periodic cost and OCI before taxes	40	(942)	38
Estimated amount that will be amortized from AOCI to net periodic cost
Net actuarial loss (gain)	$ (426)