Annual report pursuant to Section 13 and 15(d)

QUARTERLY FINANCIAL INFORMATION (Details)

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QUARTERLY FINANCIAL INFORMATION (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Jan. 28, 2012
Oct. 29, 2011
Jul. 30, 2011
Apr. 30, 2011
Jan. 29, 2011
Oct. 30, 2010
Jul. 31, 2010
May 01, 2010
Jan. 28, 2012
Jan. 29, 2011
Jan. 30, 2010
QUARTERLY FINANCIAL INFORMATION - (Details) [Abstract]                      
Net sales $ 1,945.6 $ 1,596.6 $ 1,542.4 $ 1,545.9 $ 1,725.3 $ 1,426.6 $ 1,377.9 $ 1,352.6 $ 6,630.5 $ 5,882.4 $ 5,231.2
Gross profit 734.5 560.6 542.4 540.8 647.9 506.0 483.5 450.2 2,378.3 2,087.6 1,856.8
Operating income 302.0 164.9 153.5 161.7 258.7 140.9 127.8 102.6 782.1 630.0 512.8
Net income $ 187.9 $ 104.5 $ 94.9 $ 101.0 $ 162.5 $ 93.2 $ 78.0 $ 63.6 $ 488.3 $ 397.3 $ 320.5
Diluted net income per share (in dollars per share) $ 1.60 $ 0.87 $ 0.77 $ 0.82 $ 1.29 $ 0.73 $ 0.61 $ 0.49 $ 4.03 $ 3.10 $ 2.37
Stores open at end of quarter 4,351 4,335 4,242 4,177 4,101 4,009 3,925 3,874      
Comparable store net sales change (in hundredths) 7.30% 4.80% 4.70% 7.10% 3.90% 8.70% 6.70% 6.50%