RETIREMENT AND BENEFIT PLANS (Details) $ in Millions	12 Months Ended
	Jan. 31, 2016 USD ($) plans	Feb. 01, 2015 USD ($)	Feb. 02, 2014 USD ($)
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Health care cost trend rate assumed for next fiscal year	6.74%
Assumed annual reduction in health care cost trend rate until ultimate trend rate	0.19%
Ultimate health care cost trend rate	4.48%
Defined benefit plan, one percentage point change in assumed health care cost trend rates	1.00%
Company contributions to supplemental savings plan and defined contribution plan	$ 18.2	$ 20.3	$ 21.8
Pension Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of Noncontributory Defined Benefit Pension Plans | plans	5
Non-contributory defined benefit pension plans, vesting period	5 years
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost, including plan expenses	$ 30.6	20.0	19.2
Interest cost	27.8	28.5	26.4
Actuarial (gain) loss	(10.1)	121.8	(51.4)
Expected return on plan assets	(42.5)	(43.5)	(39.5)
Amortization of prior service cost (credit)	0.0	0.0	0.0
Curtailment gain	0.0	0.0	0.0
Total	5.8	126.8	(45.3)
Estimated future employer contributions to its pension plans in 2016	$ 6.4
SERP Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of Noncontributory Defined Benefit Pension Plans | plans	3
Plan Benefit Payment Period	10 years
Plan benefit payment activation age	65
Minimum age prior to employment termination	55
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost, including plan expenses	$ 5.6	4.5	4.4
Interest cost	3.7	4.0	3.6
Actuarial (gain) loss	(9.1)	13.9	2.1
Expected return on plan assets	0.0	0.0	0.0
Amortization of prior service cost (credit)	(0.1)	(0.1)	(0.1)
Curtailment gain	0.0	0.0	0.0
Total	$ 0.1	22.3	10.0
Minimum Number of Years of Employment	10 years
Postretirement Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Minimum age prior to employment termination	55
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost, including plan expenses	$ 0.0	0.0	0.1
Interest cost	0.6	0.8	0.9
Actuarial (gain) loss	(1.0)	3.2	(1.0)
Expected return on plan assets	0.0	0.0	0.0
Amortization of prior service cost (credit)	(0.4)	(0.8)	(0.8)
Curtailment gain	0.0	0.0	(2.2)
Total	$ (0.8)	$ 3.2	$ (3.0)
Minimum Number of Years of Employment	10 years
United States Equities [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Target allocation percentage of assets, equity securities	40.00%
International Equities [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Target allocation percentage of assets, equity securities	20.00%
Fixed Income Securities [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Target allocation percentage of assets, equity securities	40.00%