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Derivative Financial Instruments (Details 4)
 3 Months Ended
Apr. 28, 2012
USD ($)
Apr. 30, 2011
USD ($)
Apr. 28, 2012
Derivatives not designated as hedging instruments:
Euro
USD ($)
Jan. 28, 2012
Derivatives not designated as hedging instruments:
Euro
USD ($)
Apr. 28, 2012
Derivatives not designated as hedging instruments:
Canadian dollar
USD ($)
Jan. 28, 2012
Derivatives not designated as hedging instruments:
Canadian dollar
USD ($)
Apr. 28, 2012
Derivatives not designated as hedging instruments:
Swiss franc
USD ($)
Jan. 28, 2012
Derivatives not designated as hedging instruments:
Swiss franc
USD ($)
Apr. 28, 2012
Derivatives not designated as hedging instruments:
Sale of GBP to purchase euros
GBP (£)
Jan. 28, 2012
Derivatives not designated as hedging instruments:
Sale of GBP to purchase euros
GBP (£)
Forward contracts not designated as cash flow hedges                    
Notional amount of foreign exchange currency sales contracts     $ 84,600,000 $ 88,000,000 $ 48,300,000 $ 50,500,000 $ 7,500,000 $ 14,000,000    
Notional amount of foreign exchange currency contracts                 2,600,000 5,000,000
Foreign currency forward contracts, maximum remaining maturity period (in months)     10 months   8 months   6 months   4 months  
Gain/(loss) on foreign exchange currency contracts recognized in other income/expense (before taxes) (2,254,000) (15,676,000)                
Gain/(loss) on interest rate swaps recognized in other income/expense (before taxes) $ 19,000 $ 163,000