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Derivative Financial Instruments (Details 2) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Apr. 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 42.2 41.5
U.S. dollar forward contracts outstanding, maximum remaining maturity period (in months) 10 months  
Europe
   
Forward contracts designated as cash flow hedges    
U.S. dollar forward contracts purchased, total notional amount 55.3  
U.S. dollar forward contracts outstanding $ 129.3 $ 90.0
U.S. dollar forward contracts outstanding, maximum remaining maturity period (in months) 10 months