v3.26.1
Share-based Compensation Plans - Schedule of Stock Option Activity (Details) - 2019 Plan - USD ($)
$ / shares in Units, $ in Millions
6 Months Ended 12 Months Ended
Jul. 31, 2026
Jan. 31, 2026
Number of Shares    
Balances, beginning (shares) 12,089  
Granted (in shares) 0  
Exercised (in shares) 0  
Forfeited (in shares) (3,482)  
Balances, ending (in shares) 8,607 12,089
Exercisable (in shares) 8,607  
Weighted Average Exercise Price    
Balances, beginning (in usd per share) $ 175.64  
Granted (in usd per share) 0  
Exercised (in usd per share) 0  
Forfeited (in usd per share) 144.31  
Balances, ending (in usd per share) 188.32 $ 175.64
Exercisable (in usd per share) $ 188.32  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]    
Weighted average remaining contractual term, outstanding (in years) 2 years 7 months 28 days 2 years 6 months 18 days
Exercisable, weighted average remaining contractual term, outstanding (in years) 2 years 7 months 28 days  
Aggregate intrinsic value $ 0.0 $ 0.0
Exercisable, aggregate intrinsic value $ 0.0