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Share Repurchase Program (Details) (Common Stock, USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended 1 Months Ended 12 Months Ended
Jan. 28, 2012
2008 Share Repurchase Program
Jan. 29, 2011
2008 Share Repurchase Program
Jan. 30, 2010
2008 Share Repurchase Program
Mar. 31, 2011
2011 Share Repurchase Program
Jan. 28, 2012
2011 Share Repurchase Program
Share Repurchase Program          
Value of common stock authorized to be repurchased from the prior 2008 plan that is included in the newly issued authorized amount       $ 84.9  
Value of common stock authorized to be repurchased, maximum       250  
Number of shares repurchased   1,500,000 407,600   3,216,514
Shares repurchased, aggregate cost   49.3 5.3   92.0
Value of common stock remaining to be repurchased $ 158.0