Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
3 Months Ended
May 04, 2019
May 24, 2019
Document And Entity Information    
Entity Registrant Name Ulta Beauty, Inc.  
Entity Central Index Key 0001403568  
Document Type 10-Q  
Document Period End Date May 04, 2019  
Amendment Flag false  
Current Fiscal Year End Date --02-01  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   58,457,743
Entity Small Business false  
Entity Emerging Growth Company false  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1  
Trading Symbol ULTA