v2.4.0.6
Document and Entity Information (USD $)
12 Months Ended
Jul. 28, 2012
Sep. 20, 2012
Jan. 28, 2012
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Jul. 28, 2012    
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus FY    
Trading Symbol ASNA    
Entity Registrant Name ASCENA RETAIL GROUP, INC.    
Entity Central Index Key 0001498301    
Current Fiscal Year End Date --07-28    
Entity Well-known Seasoned Issuer Yes    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Large Accelerated Filer    
Entity Common Stock, Shares Outstanding   155,213,311  
Entity Public Float     $ 2,200,000,000