RETIREMENT AND BENEFIT PLANS Amounts Recognized in Balance Sheets (Details) - USD ($) $ in Millions	Jan. 29, 2017	Jan. 31, 2016
Pension Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Noncurrent assets	$ 32.6	$ 0.0
Current liabilities	0.0	0.0
Non-current liabilities	(0.6)	(84.3)
Net amount recognized	32.0	(84.3)
SERP Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Noncurrent assets	0.0	0.0
Current liabilities	(8.5)	(7.5)
Non-current liabilities	(79.1)	(81.1)
Net amount recognized	(87.6)	(88.6)
Postretirement Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Noncurrent assets	0.0	0.0
Current liabilities	(1.5)	(1.9)
Non-current liabilities	(9.9)	(13.9)
Net amount recognized	$ (11.4)	$ (15.8)