BASIS OF PRESENTATION (Details) shares in Millions, $ in Millions		3 Months Ended		12 Months Ended
	Feb. 02, 2016 USD ($) store	Apr. 30, 2016 USD ($) store shares	May. 02, 2015	Jan. 28, 2017	Jan. 30, 2016	Mar. 31, 2016 USD ($)
Acquisition
Duration period of fiscal year		91 days	91 days	364 days	364 days
Share Repurchase Program
Common stock share repurchase authorized amount						$ 200.0
Number of shares repurchased | shares		2.3
Value of shares repurchased		$ 59.3
Remaining amount under share repurchase program		$ 140.7
Minimum
Acquisition
Duration period of fiscal year		364 days
Maximum
Acquisition
Duration period of fiscal year		371 days
Lamrite
Acquisition
Purchase contract amount	$ 150.0
Number of stores | store	32	33