v3.26.1
Segments and Disaggregated Revenue - Schedule of Segment Reporting Information by Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Jan. 31, 2026
Segment Reporting [Line Items]          
Net sales $ 186,100 $ 175,750 $ 361,784 $ 339,731  
Membership and other income 1,837 1,652 3,904 3,280  
Total revenues 187,937 177,402 365,688 343,011  
Cost of sales 138,804 132,771 271,862 257,074  
Operating, selling, general and administrative expenses 39,750 37,345 76,950 71,516  
Operating income 9,383 7,286 16,876 14,421  
Interest, net 171 675 791 1,219  
Other (gains) and losses 1,200 (2,708) 925 (2,111)  
Income before income taxes 8,012 9,319 15,160 15,313  
Depreciation and amortization 3,925 3,487 7,746 6,856  
Capital expenditures 7,497 6,423 14,181 11,409  
Total assets 293,914 270,837 293,914 270,837 $ 284,668
Walmart U.S.          
Segment Reporting [Line Items]          
Net sales 125,189 120,911 242,358 233,074  
Walmart International          
Segment Reporting [Line Items]          
Net sales 35,198 31,201 70,307 60,955  
Sam's Club U.S.          
Segment Reporting [Line Items]          
Net sales 25,713 23,638 49,118 45,702  
Fuel-related expenses 3,400 2,300 6,100 4,500  
Operating Segments | Walmart U.S.          
Segment Reporting [Line Items]          
Net sales 125,189 120,911 242,358 233,074  
Membership and other income 750 649 1,676 1,285  
Total revenues 125,939 121,560 244,034 234,359  
Cost of sales 88,351 87,237 172,991 168,589  
Operating, selling, general and administrative expenses 29,468 27,591 57,026 53,342  
Operating income 8,120 6,732 14,017 12,428  
Depreciation and amortization 2,602 2,299 5,111 4,539  
Capital expenditures 5,442 4,775 10,453 8,547  
Total assets 172,301   172,301   165,627
Operating Segments | Walmart International          
Segment Reporting [Line Items]          
Net sales 35,198 31,201 70,308 60,955  
Membership and other income 426 381 851 760  
Total revenues 35,624 31,582 71,159 61,715  
Cost of sales 27,659 24,472 55,346 47,936  
Operating, selling, general and administrative expenses 6,526 5,876 12,772 11,252  
Operating income 1,439 1,234 3,041 2,527  
Depreciation and amortization 632 572 1,263 1,121  
Capital expenditures 991 746 1,812 1,227  
Total assets 87,968   87,968   86,093
Operating Segments | Sam's Club U.S.          
Segment Reporting [Line Items]          
Net sales 25,713 23,638 49,118 45,702  
Membership and other income 654 617 1,328 1,224  
Total revenues 26,367 24,255 50,446 46,926  
Cost of sales 22,794 21,062 43,525 40,549  
Operating, selling, general and administrative expenses 2,895 2,723 5,569 5,241  
Operating income 678 470 1,352 1,136  
Depreciation and amortization 205 195 408 384  
Capital expenditures 390 194 664 338  
Total assets 18,203   18,203   17,186
Corporate and support          
Segment Reporting [Line Items]          
Membership and other income 7 5 49 11  
Operating, selling, general and administrative expenses 861 1,155 1,583 1,681  
Operating income (854) (1,150) (1,534) (1,670)  
Depreciation and amortization 486 421 964 812  
Capital expenditures 674 $ 708 1,252 $ 1,297  
Total assets $ 15,442   $ 15,442   $ 15,762