XML 23 R1.htm IDEA: XBRL DOCUMENT v3.20.4
Document And Entity Information - USD ($)
12 Months Ended
Jan. 30, 2021
Mar. 12, 2021
Jul. 31, 2020
Document Information [Line Items]      
Entity Central Index Key 0001531152    
Entity Registrant Name BJ's Wholesale Club Holdings, Inc.    
Amendment Flag false    
Current Fiscal Year End Date --01-30    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2020    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Jan. 30, 2021    
Document Transition Report false    
Entity File Number 001-38559    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 45-2936287    
Entity Address, Address Line One 25 Research Drive    
Entity Address, City or Town Westborough    
Entity Address, State or Province MA    
Entity Address, Postal Zip Code 01581    
City Area Code 774    
Local Phone Number 512-7400    
Title of 12(b) Security Common Stock, par value $0.01    
Trading Symbol BJ    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 5,500,000,000
Entity Common Stock, Shares Outstanding   137,238,091