Organization and Basis of Presentation (Fiscal Year) (Details)	6 Months Ended
	Jul. 29, 2012 weeks
52-Week Fiscal Year [Member]
Organization And Basis Of Presentation [Line Items]
Number of weeks in a fiscal year	52
Number of weeks in a quarter for 52 week fiscal period	13
53-Week Fiscal Year [Member]
Organization And Basis Of Presentation [Line Items]
Number of weeks in a fiscal year	53
Number of weeks for the fourth quarter for a 53-week fiscal year	14