v3.26.3
Earnings per Common Share - Schedule of Calculations of Basic and Diluted Earnings (Loss) per Common Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Earnings Per Share [Abstract]    
Net income $ 162.5 $ 122.5
Dividends allocated to participating securities (0.1) 0.0
Earnings available for common stockholders used in calculation of basic earnings per common share $ 162.4 $ 122.5
Weighted average number of common shares outstanding, basic (in shares) 49.8 50.1
Basic earnings per common share (in dollars per share) $ 3.26 $ 2.45
Dividends allocated to participating securities $ (0.1) $ 0.0
Earnings available for common stockholders used in calculation of diluted earnings per common share $ 162.4 $ 122.5
Effect of shares issuable under share-based compensation plans (in shares) 0.2 0.3
Weighted average number of common shares outstanding, diluted (in shares) 50.0 50.4
Diluted earnings per common share (in dollars per share) $ 3.25 $ 2.43