v3.26.1
Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Net income (loss) $ 324.3 $ (43.9)
Net income (loss) per common share (in dollars per share) $ 3.04 $ (0.41)
Net income (loss) per common share – assuming dilution $ 3.03 $ (0.41)
Treasury Stock Method [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Net income (loss) $ 324.3 $ (43.9)
Weighted-average common shares outstanding 106.8 106.6
Weighted-average common shares outstanding – assuming dilution (in shares) 107.1 106.6
Net income (loss) per common share (in dollars per share) $ 3.04 $ (0.41)
Net income (loss) per common share – assuming dilution $ 3.03 $ (0.41)
Employee stock options | Treasury Stock Method [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Dilutive effect (in shares) 0.0 0.0
Restricted shares, restricted stock units, and performance units | Treasury Stock Method [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Dilutive effect (in shares) 0.3 0.0