Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
3 Months Ended
May 05, 2018
May 29, 2018
Document And Entity Information    
Entity Registrant Name Ulta Beauty, Inc.  
Entity Central Index Key 0001403568  
Document Type 10-Q  
Document Period End Date May 05, 2018  
Amendment Flag false  
Current Fiscal Year End Date --02-02  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   60,179,958
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1  
Trading Symbol ULTA