v3.24.2.u1
Earnings per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Jul. 31, 2024
Jul. 31, 2023
Schedule of Earnings Per Share, Two Class Method [Line Items]    
Net income $ 185.0 $ 183.6
Net income per common share (in dollars per share) $ 1.74 $ 1.79
Net income per common share – assuming dilution $ 1.74 $ 1.79
Two-class method    
Schedule of Earnings Per Share, Two Class Method [Line Items]    
Net income $ 185.0 $ 183.6
Less: Net income allocated to participating securities 0.0 0.1
Net income allocated to common stockholders $ 185.0 $ 183.5
Weighted-average common shares outstanding 106.3 102.4
Add: Dilutive effect of stock options (in shares) 0.0 0.1
Weighted-average common shares outstanding – assuming dilution (in shares) 106.3 102.5
Net income per common share (in dollars per share) $ 1.74 $ 1.79
Net income per common share – assuming dilution $ 1.74 $ 1.79