v2.3.0.11
Basis of Presentation (Details)
3 Months Ended 6 Months Ended
Jul. 30, 2011
Jul. 31, 2010
Jul. 30, 2011
Jul. 31, 2010
Basis of Presentation Disclosure [Abstract]        
Number of weeks in first quarter (in weeks) P13W P13W    
Number of weeks in second quarter (in weeks)     P26W P26W