Derivative Financial Instruments (Details 4) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2015	Nov. 01, 2014	Oct. 31, 2015	Nov. 01, 2014	Jan. 31, 2015
Other income/expense
Derivative instruments not designated as hedging instruments
Gain on foreign exchange currency contracts recognized in earnings before taxes	$ 286	$ 6,262	$ 2,445	$ 7,457
Gain on interest rate swaps recognized in earnings before taxes	44	$ 54	$ 140	$ 186
Derivatives not designated as hedging instruments: | Euro
Derivative instruments not designated as hedging instruments
U.S. dollar forward contracts outstanding, maximum remaining maturity period (in months)			11 months
Derivatives not designated as hedging instruments: | Canadian dollar
Derivative instruments not designated as hedging instruments
U.S. dollar forward contracts outstanding, maximum remaining maturity period (in months)			10 months
Foreign exchange currency contracts | Derivatives not designated as hedging instruments: | Euro
Derivative instruments not designated as hedging instruments
U.S. dollar forward contracts outstanding	67,500		$ 67,500		$ 59,300
Foreign exchange currency contracts | Derivatives not designated as hedging instruments: | Canadian dollar
Derivative instruments not designated as hedging instruments
U.S. dollar forward contracts outstanding	$ 19,900		$ 19,900		$ 19,900