v3.26.1
Stockholders' Equity - Schedule of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Apr. 30, 2026
Jan. 31, 2026
Number of shares    
Options outstanding, beginning balance (in shares) 15,134,876  
Options granted (in shares) 97,300  
Options exercised (in shares) (19,448)  
Options forfeited/cancelled (in shares) (91,993)  
Options outstanding, ending balance (in shares) 15,120,735 15,134,876
Options vested and exercisable (in shares) 9,444,451  
Options vested and exercisable and expected to vest thereafter (in shares) 15,120,735  
Weighted average exercise price    
Options outstanding, beginning balance (in usd per share) $ 181.99  
Options granted (in usd per share) 175.42  
Options exercised (in usd per share) 151.04  
Options forfeited/cancelled (in usd per share) 216.62  
Options outstanding, ending balance (in usd per share) 181.78 $ 181.99
Options vested and exercisable (in usd per share) 159.56  
Options vested and exercisable and expected to vest thereafter (in usd per share) $ 181.78  
Weighted average remaining contractual term (in years), options outstanding 6 years 6 years 3 months 18 days
Weighted average remaining contractual term (in years), options vested and exercisable 4 years 9 months 18 days  
Weighted average remaining contractual term (in years), options vested and exercisable and expected to vest thereafter 6 years  
Aggregate intrinsic value (in millions)    
Options outstanding $ 291 $ 523
Options vested and exercisable 291  
Options vested and exercisable and expected to vest thereafter $ 291