Derivatives - Additional Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	May 02, 2015	May 03, 2014	Jan. 31, 2015
Derivative [Line Items]
Derivative, notional amount in gold	77,000	39,000	81,000
Interest rate swaps
Derivative [Line Items]
Derivative, notional amount	$ 300.0
Foreign currency contracts | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount	8.0	39.7	40.3
Cash Flow Hedging
Derivative [Line Items]
Cash flow hedge loss to be reclassified within twelve months	(3.8)
Cash Flow Hedging | Foreign currency contracts
Derivative [Line Items]
Derivative, notional amount	$ 16.8	$ 40.4	$ 23.5
Derivative, Remaining Maturity	0 years 9 months 0 days	0 years 12 months 0 days	0 years 12 months 0 days
Cash Flow Hedging | Commodity contracts
Derivative [Line Items]
Derivative, Remaining Maturity	0 years 12 months 0 days	0 years 10 months 0 days	0 years 11 months 0 days