v3.25.4
Taxes - Schedule of Income Tax Rate (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 31, 2026
Jan. 31, 2025
Jan. 31, 2024
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]      
U.S. federal statutory tax rate $ 6,188    
State and local income tax, net of federal (national) income tax effect 760    
Other foreign jurisdictions 498    
Effect of cross-border tax laws 400    
Foreign tax credits (586)    
Research and development tax credits (323)    
Other, tax credits (167)    
Share based compensation (373)    
Other, nontaxable or nondeductible items 132    
Changes in unrecognized tax benefits 301    
Total provision for income taxes $ 7,199 $ 6,152 $ 5,578
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
U.S. statutory tax rate 21.00% 21.00% 21.00%
U.S. state income taxes, net of federal income tax benefit 2.60% 2.80% 3.00%
Other, net   (0.40%) 1.50%
Valuation allowance   0.40% 1.20%
Other foreign jurisdictions 1.70% 1.30% 0.10%
Effect of cross-border tax laws 1.40%    
Foreign tax credits (2.00%)    
Research and development tax credits (1.10%)    
Other, tax credits (0.60%)    
Share based compensation (1.30%)    
Other, nontaxable or nondeductible items 0.40%    
Changes in unrecognized tax benefits 1.00% 0.30% 0.60%
Effective income tax rate 24.40% 23.40% 25.50%
India      
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Changes in valuation allowances $ 461    
Other $ (93)    
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Other, net (0.30%)    
Valuation allowance 1.60%    
Luxembourg      
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Changes in valuation allowances $ (1,811)    
Other 83    
Internal reorganization $ 1,814    
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Other, net 0.30%    
Valuation allowance (6.10%)    
Internal reorganization 6.20%    
U.S.      
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Changes in valuation allowances $ 374    
Other (110)    
Internal reorganization $ (349)    
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Other, net (0.50%)    
Valuation allowance 1.30%    
Internal reorganization (1.20%)