v3.25.4
Income Taxes - Reconciliation of Income Taxes Computed at Federal Statutory Income Tax Rate and Provision for (Benefit from) Income Taxes (Detail) - USD ($)
$ in Millions
12 Months Ended
Jan. 31, 2026
Jan. 31, 2025
Jan. 31, 2024
Amount      
U.S. federal statutory tax rate $ 212    
State and local income taxes, net of federal income tax effect 34    
Intercompany transactions 26    
Other (1)    
Foreign-derived intangible income (24)    
Other 2    
Research and development tax credit (68)    
Share-based compensation 81    
Other 12    
Change in unrecognized tax benefits 32    
Provision for (benefit from) income taxes $ 316 $ 112 $ (1,025)
Percent      
Federal statutory rate 21.00% 21.00% 21.00%
State taxes, net of federal benefit 3.40% 3.10% 5.10%
Intercompany transactions 2.60%    
Changes in valuation allowance   0.00% (315.50%)
Other (0.10%) (0.10%) 1.20%
Other foreign jurisdictions   0.20% 10.90%
Foreign-derived intangible income (2.40%)    
Other 0.10%    
Research and development tax credit (6.70%) (15.40%) (26.30%)
Share-based compensation 8.10%    
Other 1.20%    
Change in unrecognized tax benefits 3.20%    
Intercompany transactions   (1.00%) (4.30%)
Share-based compensation   8.10% 19.10%
Permanent difference   1.60% 1.20%
Effective tax rate 31.30% 17.50% (287.60%)
Ireland      
Amount      
Intercompany transactions $ (97)    
Change in valuation allowance 115    
Other $ (14)    
Percent      
Intercompany transactions (9.60%)    
Changes in valuation allowance 11.40%    
Other (1.40%)    
Other foreign jurisdictions      
Amount      
Other foreign jurisdictions $ 6    
Percent      
Other foreign jurisdictions 0.50%