Organization and Basis of Presentation (Fiscal Year) (Details)	3 Months Ended
	Apr. 30, 2017 weeks week	May 01, 2016 weeks
52 Week Fiscal Year [Member]
Organization And Basis Of Presentation [Line Items]
Number of weeks in the fiscal year reporting period	52
Number of weeks in a quarter for 52 week fiscal period	13	13
53 Week Fiscal Year [Member]
Organization And Basis Of Presentation [Line Items]
Number of weeks in the fiscal year reporting period	53
Number of weeks in the 4th quarter for 53 week fiscal period | week	14