v3.26.1
Capital Stock - Changes in Issued and Outstanding Common Shares (Details) - USD ($)
$ in Millions
 12 Months Ended
Feb. 28, 2026
Feb. 28, 2025
Feb. 29, 2024
Common Stock [Roll Forward]      
Capital stock outstanding, Shares, Beginning Balance 596,230,655    
Stock Repurchased During Period, Shares 15,600,000    
Capital stock outstanding, Shares, Ending Balance 587,431,120 596,230,655  
Common Stock, Amount [Roll Forward]      
Exercise of stock options     $ 0.3
Stock-based compensation $ 23.1 $ 25.6 33.1
Deferred Shared Unit     0.9
Employee share purchase plan $ 2.5 $ 3.1 $ 4.8
Capital Stock and Additional Paid-In Capital [Member]      
Common Stock [Roll Forward]      
Capital stock outstanding, Shares, Beginning Balance 596,231,000 589,233,000 582,157,000
Exercised during the year, Number 28,000 12,000 106,000
Stock Issued During Period, Shares, Restricted Stock Award, Gross 6,142,000 5,823,000 5,636,000
Common shares issued on the redemption of deferred share units     297,000
Common shares issued for employee share purchase plan 580,000 1,163,000 1,037,000
Treasury stock - share repurchase $ (77.6)    
Stock Repurchased During Period, Shares (15,550,000)    
Capital stock outstanding, Shares, Ending Balance 587,431,000 596,231,000 589,233,000
Common Stock, Amount [Roll Forward]      
Capital stock outstanding, Value, Beginning Balance $ (2,976.4) $ (2,947.7) $ (2,908.6)
Exercise of stock options 0.0 0.0 0.3
Stock-based compensation 23.1 25.6 33.1
Deferred Shared Unit     0.9
Share repurchases 77.6    
Employee share purchase plan 2.5 3.1 4.8
Capital stock outstanding, Value, Ending Balance $ (2,924.4) $ (2,976.4) $ (2,947.7)