SHARE-BASED COMPENSATION (Restricted Stock Unit Activity) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Feb. 03, 2018		Jan. 28, 2017	Jan. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options	$ 2.8		$ 7.0	$ 5.9
Weighted-Average Grant Date Fair Value [Roll Forward]
Target percentage of equity awards earned	100.00%
Service-based restricted stock units with $1.00 net income requirement [Member]
Number of Underlying Shares Outstanding [Roll Forward]
Number of Underlying Shares, Outstanding, Ending Balance (in shares)	704,703
Market-based Restricted Stock Units (RSUs) [Member]
Number of Underlying Shares Outstanding [Roll Forward]
Number of Underlying Shares, Outstanding, Ending Balance (in shares)	383,980		184,892
Number of Underlying Shares, Granted (in shares)	236,872
Number of Underlying Shares, Change due to performance criteria achievement (in shares)	0
Number of Underlying Shares, Vested (in shares)	0
Number of Underlying Shares, Forfeited (in shares)	(37,784)
Weighted-Average Grant Date Fair Value [Roll Forward]
Weighted-Average Grant Date Fair Value, Granted (in dollars per share)	$ 11.79
Weighted-Average Grant Date Fair Value, Change due to performance achievement criteria (in dollars per share)	0.00
Weighted-Average Grant Date Fair Value, Vested (in dollars per share)	0.00
Weighted-Average Grant Date Fair Value, Forfeited (in dollars per share)	26.14
Weighted-Average Grant Date Fair Value, Unvested, Outstanding (in dollars per share)	$ 16.50		$ 26.89
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 3.2
Service-based Restricted Stock Unit (RSUs) [Member]
Number of Underlying Shares Outstanding [Roll Forward]
Number of Underlying Shares, Outstanding, Ending Balance (in shares)	2,520,160	[1]	1,915,461
Number of Underlying Shares, Granted (in shares)	1,698,803
Number of Underlying Shares, Change due to performance criteria achievement (in shares)	0
Number of Underlying Shares, Vested (in shares)	(746,118)
Number of Underlying Shares, Forfeited (in shares)	(347,986)
Weighted-Average Grant Date Fair Value [Roll Forward]
Weighted-Average Grant Date Fair Value, Granted (in dollars per share)	$ 9.96
Weighted-Average Grant Date Fair Value, Change due to performance achievement criteria (in dollars per share)	0.00
Weighted-Average Grant Date Fair Value, Vested (in dollars per share)	25.62
Weighted-Average Grant Date Fair Value, Forfeited (in dollars per share)	22.20
Weighted-Average Grant Date Fair Value, Unvested, Outstanding (in dollars per share)	$ 15.35		$ 25.47
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 24.6
Performance-based Restricted Stock Units (RSUs) [Member]
Number of Underlying Shares Outstanding [Roll Forward]
Number of Underlying Shares, Outstanding, Ending Balance (in shares)	690,174	[1]	203,923
Number of Underlying Shares, Granted (in shares)	524,030
Number of Underlying Shares, Change due to performance criteria achievement (in shares)	0
Number of Underlying Shares, Vested (in shares)	0
Number of Underlying Shares, Forfeited (in shares)	(37,779)
Weighted-Average Grant Date Fair Value [Roll Forward]
Weighted-Average Grant Date Fair Value, Granted (in dollars per share)	$ 9.11
Weighted-Average Grant Date Fair Value, Change due to performance achievement criteria (in dollars per share)	0.00
Weighted-Average Grant Date Fair Value, Vested (in dollars per share)	0.00
Weighted-Average Grant Date Fair Value, Forfeited (in dollars per share)	21.75
Weighted-Average Grant Date Fair Value, Unvested, Outstanding (in dollars per share)	$ 11.82		$ 22.53
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 5.2
Minimum [Member] | Performance-based Restricted Stock Units (RSUs) [Member]
Weighted-Average Grant Date Fair Value [Roll Forward]
Target percentage of equity awards earned	0.00%
Maximum [Member] | Performance-based Restricted Stock Units (RSUs) [Member]
Weighted-Average Grant Date Fair Value [Roll Forward]
Target percentage of equity awards earned	200.00%
Market Vesting Conditions [Member] | Market-based Restricted Stock Units (RSUs) [Member]
Weighted-Average Grant Date Fair Value [Roll Forward]
Weighted-Average Grant Date Fair Value, Granted (in dollars per share)	$ 11.79		$ 31.01	$ 19.04

[1] Unvested shares related to restricted stock units with performance-based vesting conditions can achieve up to 200% of their target vesting amount and are reflected at 100% of their target vesting amount in the table above.