v3.26.1
Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2024
Schedule of Earnings Per Share, Two Class Method [Line Items]      
Net income (loss) $ (138.7) $ (1,230.8) $ 744.0
Net income (loss) per common share (in dollars per share) $ (1.30) $ (11.57) $ 7.14
Net income (loss) per common share - assuming dilution (in dollars per share) $ (1.30) $ (11.57) $ 7.13
Two-class method [Member]      
Schedule of Earnings Per Share, Two Class Method [Line Items]      
Net income (loss) $ (138.7) $ (1,230.8) $ 744.0
Less: Net income (loss) allocated to participating securities 0.0 (0.1) 0.2
Net income (loss) allocated to common stockholders $ (138.7) $ (1,230.7) $ 743.8
Weighted-average common shares outstanding (in shares) 106.7 106.4 104.1
Add: Dilutive effect of stock options (in shares) 0.0 0.0 0.1
Weighted-average common shares outstanding – assuming dilution (in shares) 106.7 106.4 104.2
Net income (loss) per common share (in dollars per share) $ (1.30) $ (11.57) $ 7.14
Net income (loss) per common share - assuming dilution (in dollars per share) $ (1.30) $ (11.57) $ 7.14