v3.25.4
Employee Incentive Plans - Schedule of Stock Option Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 12 Months Ended
Jan. 31, 2026
Jan. 31, 2025
Number of Options  (in thousands)    
Number of options, outstanding beginning of period (in shares) 2,199  
Number of options, exercised (in shares) (1,128)  
Number of options, expired (in shares) (1)  
Number of options, outstanding end of period (in shares) 1,070 2,199
Vested and expected to vest, number of options (in shares) 1,070  
Vested and exercisable, number of options (in shares) 1,070  
Weighted-Average Exercise Price     
Options outstanding, weighted average exercise price beginning of period (in dollars per share) $ 57.98  
Options exercised, weighted average exercise price (in dollars per share) 10.11  
Options expired, weighted average exercise price (in dollars per share) 30.56  
Options outstanding, weighted average exercise price end of period (in dollars per share) 108.43 $ 57.98
Vested and expected to vest, weighted average exercise price (in dollars per share) 108.43  
Vested and exercisable, weighted average exercise price (in dollars per share) $ 108.43  
Additional Disclosures    
Options outstanding, weighted average remaining contractual term 3 years 1 month 6 days 2 years 9 months 18 days
Vested and expected to vest, weighted average remaining contractual term 3 years 1 month 6 days  
Vested and exercisable, weighted average remaining contractual term 3 years 1 month 6 days  
Options outstanding, aggregate intrinsic value $ 36 $ 137
Vested and expected to vest, aggregate intrinsic value 36  
Vested and exercisable, aggregate intrinsic value $ 36