Quarterly report pursuant to Section 13 or 15(d)

NET INCOME PER SHARE (Details)

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NET INCOME PER SHARE (Details) (USD $)
In Millions, except Share data
3 Months Ended 6 Months Ended
Jul. 30, 2011
Jul. 31, 2010
Jul. 30, 2011
Jul. 31, 2010
Basic net income per share:        
Net income $ 94.9 $ 78.0 $ 195.9 $ 141.6
Weighted average number of shares outstanding (in shares) 122.3 127.3 122.4 128.3
Basic net income per share (in dollars per share) $ 0.78 $ 0.61 $ 1.60 $ 1.10
Diluted net income per share:        
Net income $ 94.9 $ 78.0 $ 195.9 $ 141.6
Weighted average number of shares outstanding (in shares) 122.3 127.3 122.4 128.3
Dilutive effect of stock options and restricted stock units (as determined by applying the treasury stock method) (in shares) 0.7 0.8 0.8 0.9
Weighted average number of shares and dilutive potential shares outstanding (in shares) 123.0 128.1 123.2 129.2
Diluted net income per share (in dollars per share) $ 0.77 $ 0.61 $ 1.59 $ 1.10