NET INCOME PER COMMON SHARE - DILUTED (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 29, 2012	Jan. 30, 2011	Jan. 31, 2010
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income available to common stockholders for basic net income per common share (add back section)	$ 299,219	$ 51,263	$ 161,910
Common stock dividends paid to holders of Series A convertible preferred stock	628	471	0
Allocation of income to Series A convertible preferred stock	18,034	2,071	0
Net income available to common stockholders for diluted net income per common share	$ 317,881	$ 53,805	$ 161,910
Number Of Dilutive Shares Issued Upon Vesting	590	611	89