v3.26.3
Capital Stock - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Aug. 31, 2025
Aug. 31, 2026
Aug. 31, 2025
May 08, 2026
Feb. 28, 2026
May 08, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock Repurchase Program, Number of Shares Authorized to be Repurchased       26,800,000   27,900,000
Percentage of Entity Public Float as of May 5, 2025       4.58%   4.70%
Stock Repurchased During Period, Shares   2,600,000        
Common shares repurchased (note 6) $ (20.0) $ (10.0) $ (30.0)      
Common shares or awards outstanding   587,032,279     587,431,120  
Capital Stock and Additional Paid-in Capital            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock Repurchased During Period, Shares   2,587,000        
Share repurchase 25.1 $ 12.9 37.9      
Common shares or awards outstanding   587,032,000     587,431,000  
Treasury stock - shares repurchase   $ (12.9)        
Deficit            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock repurchased and charged against retained earnings $ 5.1 $ 2.9 $ 7.9