Earnings Per Share Data (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	May 04, 2013	Apr. 28, 2012
Basic:
Net income	$ 117,210	$ 94,983
Weighted average shares of common stock outstanding	46,936,000	49,380,000
Basic earnings per share (in dollars per share)	$ 2.50	$ 1.92
Diluted:
Net income	$ 117,210	$ 94,983
Weighted average shares of common stock outstanding	46,936,000	49,380,000
Dilutive effect of stock-based compensation (in shares)		930,000
Total weighted average equivalent shares	46,936,000	50,310,000
Diluted earnings per share (in dollars per share)	$ 2.50	$ 1.89
Total stock options outstanding (in shares)	0	2,145,000