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Cover Page - USD ($)
 12 Months Ended
Jan. 31, 2024
Mar. 13, 2024
Jul. 31, 2023
Document Type 10-K    
Document Annual Report true    
Document Period End Date Jan. 31, 2024    
Current Fiscal Year End Date --01-31    
Document Transition Report false    
Entity File Number 001-06991    
Entity Registrant Name WALMART INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 71-0415188    
Entity Address, Address Line One 702 S.W. 8th Street    
Entity Address, Postal Zip Code 72716    
Entity Address, City or Town Bentonville,    
Entity Address, State or Province AR    
City Area Code 479    
Local Phone Number 273-4000    
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    
Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 228,694,206,501
Entity Common Stock, Shares Outstanding   8,058,048,674  
Documents Incorporated by Reference
Document  Parts Into Which Incorporated
Portions of the registrant's Proxy Statement for the Annual Meeting of Shareholders to be held June 5, 2024 (the "Proxy Statement")
  Part III
    
Entity Central Index Key 0000104169    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false    
Common Stock, par value $0.10 per share      
Title of 12(b) Security Common Stock, par value $0.10 per share    
Trading Symbol WMT    
Security Exchange Name NYSE    
2.550% Notes Due 2026      
Title of 12(b) Security 2.550% Notes due 2026    
Trading Symbol WMT26    
Security Exchange Name NYSE    
1.050% Notes Due 2026      
Title of 12(b) Security 1.050% Notes due 2026    
Trading Symbol WMT26A    
Security Exchange Name NYSE    
1.500% Notes Due 2028      
Title of 12(b) Security 1.500% Notes due 2028    
Trading Symbol WMT28C    
Security Exchange Name NYSE    
4.875% Notes Due 2029      
Title of 12(b) Security 4.875% Notes due 2029    
Trading Symbol WMT29B    
Security Exchange Name NYSE    
5.750% Notes Due 2030      
Title of 12(b) Security 5.750% Notes due 2030    
Trading Symbol WMT30B    
Security Exchange Name NYSE    
1.800% Notes Due 2031      
Title of 12(b) Security 1.800% Notes due 2031    
Trading Symbol WMT31A    
Security Exchange Name NYSE    
5.625% Notes Due 2034      
Title of 12(b) Security 5.625% Notes due 2034    
Trading Symbol WMT34    
Security Exchange Name NYSE    
5.250% Notes Due 2035      
Title of 12(b) Security 5.250% Notes due 2035    
Trading Symbol WMT35A    
Security Exchange Name NYSE    
4.875% Notes Due 2039      
Title of 12(b) Security 4.875% Notes due 2039    
Trading Symbol WMT39    
Security Exchange Name NYSE