XML 16 R1.htm IDEA: XBRL DOCUMENT v3.19.1
Document and Entity Information - USD ($)
 12 Months Ended
Feb. 03, 2019
Mar. 31, 2019
Jul. 29, 2018
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Feb. 03, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Entity Registrant Name WILLIAMS SONOMA INC    
Entity Central Index Key 0000719955    
Current Fiscal Year End Date --02-03    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 4,678,185,000
Trading Symbol WSM    
Entity Common Stock, Shares Outstanding   78,563,968  
Entity Shell Company false    
Entity Emerging Growth Company false    
Entity Small Business false