Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jul. 28, 2012 Pending or Threatened Litigation [Member]	Aug. 03, 2013 Rivera Matter [Member]	May 04, 2013 Rivera Matter [Member]
Loss Contingencies [Line Items]
Loss Contingency, Loss in Period, Before Post-Judgment Interest			$ 1.5
Loss Contingency, Loss in Period		(0.7)	5.1
Litigation Settlement, Gross		$ 4.4
Number of Shareholder Derivative Lawsuits	3