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Derivative Financial Instruments (Details 4)
 3 Months Ended 6 Months Ended
Jul. 28, 2012
Other income/expense
USD ($)
Jul. 30, 2011
Other income/expense
USD ($)
Jul. 28, 2012
Other income/expense
USD ($)
Jul. 30, 2011
Other income/expense
USD ($)
Jul. 28, 2012
Derivatives not designated as hedging instruments:
Euro
USD ($)
Jan. 28, 2012
Derivatives not designated as hedging instruments:
Euro
USD ($)
Jul. 28, 2012
Derivatives not designated as hedging instruments:
Canadian dollar
USD ($)
Jan. 28, 2012
Derivatives not designated as hedging instruments:
Canadian dollar
USD ($)
Jul. 28, 2012
Derivatives not designated as hedging instruments:
Swiss franc
USD ($)
Jan. 28, 2012
Derivatives not designated as hedging instruments:
Swiss franc
USD ($)
Jul. 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         $ 68,200,000 $ 88,000,000 $ 36,100,000 $ 50,500,000 $ 2,800,000 $ 14,000,000    
Notional amount of foreign exchange currency contracts                     5,300,000 5,000,000
Foreign currency forward contracts, maximum remaining maturity period         9 months   5 months   3 months   6 months  
Gain/(loss) on foreign exchange currency contracts recognized in other income/expense (before taxes) 8,474,000 3,270,000 6,220,000 (12,406,000)                
Derivatives not designated as hedging instruments                        
Gain/(loss) on interest rate swaps recognized in other income/expense (before taxes) $ (14,000) $ (163,000) $ 5,000 $ 0