Earnings per Common Share (Tables)

9 Months Ended

Mar. 31, 2025

Earnings Per Share [Abstract]

Schedule of Calculations of Basic and Diluted Earnings (Loss) per Common Share

The calculations of basic and diluted earnings per common share for the three and nine months ended March 31, 2025 and 2024 were as follows: 

	Three Months Ended March 31,				Nine Months Ended March 31,
(in millions, except per share data)	2025		2024		2025		2024
Net income	$	95.4	$	6.3	$	264.3	$	92.9
Dividends allocated to participating securities	—		(0.1)		(0.1)		(0.2)
Earnings available for common stockholders used in calculation of basic earnings per common share	$	95.4	$	6.2	$	264.2	$	92.7
Weighted average number of common shares outstanding, basic	50.2		49.7		50.2		49.5
Basic earnings per common share	$	1.90	$	0.12	$	5.27	$	1.87
Net income	$	95.4	$	6.3	$	264.3	$	92.9
Dividends allocated to participating securities	—		(0.1)		(0.1)		(0.2)
Earnings available for common stockholders used in calculation of diluted earnings per common share	$	95.4	$	6.2	$	264.2	$	92.7
Weighted average number of common shares outstanding, basic	50.2		49.7		50.2		49.5
Effect of shares issuable under share-based compensation plans	0.5		0.6		0.5		0.6
Weighted average number of common shares outstanding, diluted	50.7		50.3		50.7		50.1
Diluted earnings per common share	$	1.88	$	0.12	$	5.21	$	1.85