XML 13 R1.htm IDEA: XBRL DOCUMENT v3.19.2
Document and Entity Information - shares
 3 Months Ended
May 05, 2019
Jun. 02, 2019
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date May 05, 2019  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q1  
Entity Registrant Name WILLIAMS SONOMA INC  
Entity Central Index Key 0000719955  
Current Fiscal Year End Date --02-02  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Trading Symbol WSM  
Entity Shell Company false  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Common Stock, Shares Outstanding   78,603,366