RETIREMENT AND BENEFIT PLANS (Details) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 31, 2016 USD ($) plans	Aug. 02, 2015 USD ($)	Jul. 31, 2016 USD ($) plans	Aug. 02, 2015 USD ($)	Jan. 29, 2017 USD ($)
SERP Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of Noncontributory Defined Benefit Pension Plans	3		3
Plan Benefit Payment Activation Age	65		65
Plan Benefit Payment Period	10 years
Minimum Number of Years of Employment	10 years
Minimum Age Prior to Employment Termination	55		55
Service cost, including plan expenses	$ 0.9	$ 1.5	$ 2.2	$ 2.8
Interest cost	0.9	0.9	1.9	1.8
Total	$ 1.8	2.4	$ 4.1	4.6
Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of Noncontributory Defined Benefit Pension Plans | plans	5		5
Service cost, including plan expenses	$ 6.1	8.2	$ 12.6	15.3
Interest cost	7.4	6.8	14.9	13.9
Defined Benefit Plan, Expected Return on Plan Assets	(8.9)	(10.4)	(17.9)	(21.2)
Total	$ 4.6	4.6	$ 9.6	8.0
Pension Contributions					$ 6.9
Vesting Period Non-Contributory Defined Benefit Pension Plans	5 years
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of Noncontributory Defined Benefit Pension Plans	2		2
Minimum Number of Years of Employment	10 years
Minimum Age Prior to Employment Termination	55		55
Interest cost	$ 0.1	0.1	$ 0.3	0.3
Amortization of prior service cost (credit)	(0.1)	(0.1)	(0.2)	(0.2)
Total	$ 0.0	$ 0.0	$ 0.1	$ 0.1