NET INCOME PER COMMON SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 28, 2012	Oct. 30, 2011	Oct. 28, 2012	Oct. 30, 2011
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income	$ 165,409	$ 112,239	$ 346,225	$ 236,635
Common stock dividends paid to holders of Series A convertible preferred stock	(78)	(157)	(287)	(471)
Allocation of income to Series A convertible preferred stock	(4,689)	(6,434)	(11,930)	(13,442)
Net income available to common stockholders for basic net income per common share	$ 160,642	$ 105,648	$ 334,008	$ 222,722
Weighted average common shares outstanding for basic net income per common share	70,586	67,225	69,843	67,051
Weighted average impact of dilutive securities	1,304	1,549	1,332	1,568
Weighted average impact of assumed convertible preferred stock conversion	2,095	4,189	2,555	4,189
Total shares for diluted net income per common share	73,985	72,963	73,730	72,808
Basic net income per common share (in dollars per share)	$ 2.28	$ 1.57	$ 4.78	$ 3.32
Diluted net income per common share (in dollars per share)	$ 2.24	$ 1.54	$ 4.70	$ 3.25
Weighted average antidilutive securities	329	426	350	356