Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information (USD $)
3 Months Ended
Apr. 30, 2011
May 31, 2011
Jul. 31, 2010
Document and Entity Information [Abstract]      
Entity Registrant Name Ulta Salon, Cosmetics & Fragrance, Inc.    
Entity Central Index Key 0001403568    
Document Type 10-Q    
Document Period End Date Apr. 30, 2011
Amendment Flag false    
Document Fiscal Year Focus 2011    
Document Fiscal Period Focus Q1    
Current Fiscal Year End Date --01-28    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 1,120,326,000
Entity Common Stock, Shares Outstanding   61,197,344