Earnings per Common Share (Tables)

3 Months Ended

Sep. 30, 2024

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 months ended September 30, 2024 and 2023 were as follows: 

	Three Months Ended September 30,
(in millions, except per share data)	2024		2023
Net income	$	84.8	$	43.9
Dividends allocated to participating securities	(0.1)		(0.1)
Earnings available for common stockholders used in calculation of basic earnings per common share	$	84.7	$	43.8
Weighted average number of common shares outstanding, basic	50.1		49.2
Basic earnings per common share	$	1.69	$	0.89
Net income	$	84.8	$	43.9
Dividends allocated to participating securities	(0.1)		(0.1)
Earnings available for common stockholders used in calculation of diluted earnings per common share	$	84.7	$	43.8
Weighted average number of common shares outstanding, basic	50.1		49.2
Effect of shares issuable under share-based compensation plans	0.6		0.7
Weighted average number of common shares outstanding, diluted	50.7		49.9
Diluted earnings per common share	$	1.67	$	0.88