Earnings per Common Share (Tables)

12 Months Ended

Jun. 30, 2025

Earnings Per Share [Abstract]

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

The calculations of basic and diluted earnings per common share for the years ended June 30, 2025, 2024 and 2023 were as follows:

	Years Ended June 30,
(in millions, except per share data)	2025		2024		2023
Net income	$	376.0	$	186.5	$	56.4
Dividends allocated to participating securities	(0.2)		(0.3)		(0.4)
Earnings available for common stockholders used in calculation of basic earnings per common share	$	375.8	$	186.2	$	56.0
Weighted average number of common shares outstanding, basic	50.2		49.7		48.8
Basic earnings per common share	$	7.50	$	3.75	$	1.15
Net income	$	376.0	$	186.5	$	56.4
Dividends allocated to participating securities	(0.2)		(0.3)		(0.4)
Earnings available for common stockholders used in calculation of diluted earnings per common share	$	375.8	$	186.2	$	56.0
Weighted average number of common shares outstanding, basic	50.2		49.7		48.8
Effect of shares issuable under share-based compensation plans	0.5		0.6		0.4
Weighted average number of common shares outstanding, diluted	50.7		50.3		49.2
Diluted earnings per common share	$	7.42	$	3.70	$	1.14

Schedule of Awards Issued Under Share-Based Compensation Plans Excluded from the Calculations of Diluted Earnings per Share

The following awards issued under share-based compensation plans were excluded from the calculations of diluted earnings per share above because their effects were anti-dilutive:

	Years Ended June 30,
(in millions)	2025	2024	2023
Stock options	—	—	0.7