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Derivative Financial Instruments (Details 2) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jul. 28, 2012
Jan. 28, 2012
Canada
   
Forward contracts designated as cash flow hedges    
U.S. dollar forward contracts purchased, total notional amount $ 11.2  
U.S. dollar forward contracts outstanding 27.0 41.5
U.S. dollar forward contracts outstanding, maximum remaining maturity period (in months) 9 months  
Europe
   
Forward contracts designated as cash flow hedges    
U.S. dollar forward contracts purchased, total notional amount 59.3  
U.S. dollar forward contracts outstanding $ 67.3 $ 90.0
U.S. dollar forward contracts outstanding, maximum remaining maturity period (in months) 9 months