v3.25.4
Summary of Significant Accounting Policies - Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Millions
Jan. 31, 2026
Jan. 31, 2025
Property, Plant and Equipment [Line Items]    
Property and equipment $ 256,421 $ 231,617
Accumulated depreciation (120,338) (111,624)
Property and equipment, net 136,083 119,993
Land    
Property, Plant and Equipment [Line Items]    
Property and equipment 20,754 19,342
Buildings and improvements    
Property, Plant and Equipment [Line Items]    
Property and equipment $ 128,472 117,973
Buildings and improvements | Minimum    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, useful life 3 years  
Buildings and improvements | Maximum    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, useful life 40 years  
Fixtures and equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment $ 85,539 76,226
Fixtures and equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, useful life 2 years  
Fixtures and equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, useful life 30 years  
Transportation equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment $ 2,928 2,673
Transportation equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, useful life 3 years  
Transportation equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, useful life 15 years  
Construction in progress    
Property, Plant and Equipment [Line Items]    
Property and equipment $ 18,728 $ 15,403