v3.25.1
Segments and Disaggregated Revenue - Revenue from Contract with Customer Excluding Assessed Tax, International (Details) - USD ($)
$ in Millions
3 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Revenue from External Customer [Line Items]    
Net sales $ 163,981 $ 159,938
Walmart International    
Revenue from External Customer [Line Items]    
Net sales 29,754 29,833
Walmart International | eCommerce    
Revenue from External Customer [Line Items]    
Net sales 7,700 6,400
Mexico and Central America | Walmart International    
Revenue from External Customer [Line Items]    
Net sales 11,714 13,232
China | Walmart International    
Revenue from External Customer [Line Items]    
Net sales 6,579 5,443
Canada | Walmart International    
Revenue from External Customer [Line Items]    
Net sales 5,145 5,328
Other | Walmart International    
Revenue from External Customer [Line Items]    
Net sales $ 6,316 $ 5,830