Earnings (Loss) Per Share (Tables)

6 Months Ended

Nov. 30, 2025

Earnings Per Share [Abstract]

Schedule of basic and diluted earnings per share

The following table summarizes the reconciliation of the numerators and denominators for the basic and diluted earnings (loss) per share computation for the periods indicated:

	Three months ended				Six months ended
	November 30,				November 30,
	2025		2024		2025		2024
Net income (loss) attributable to Class A and Common Stockholders	$	55.9	$	48.8	$	(15.2)	$	(13.7)
Weighted average Shares of Class A Stock and Common Stock outstanding for basic earnings (loss) per share (in millions)		25.4		28.2		25.3		28.3
Dilutive effect of Common Stock potentially issuable pursuant to stock-based compensation plans (in millions)*		0.4		0.4		—		—
Adjusted weighted average Shares of Class A Stock and Common Stock outstanding for diluted earnings (loss) per share (in millions)		25.8		28.6		25.3		28.3
Earnings (loss) per share of Class A Stock and Common Stock:
Basic	$	2.21	$	1.73	$	(0.60)	$	(0.48)
Diluted	$	2.17	$	1.71	$	(0.60)	$	(0.48)
Anti-dilutive shares pursuant to stock-based compensation plans (in millions)*		1.4		1.8		0.4		—

Schedule of stock option activity

The following table sets forth options outstanding pursuant to stock-based compensation plans as of the dates indicated: 

	November 30, 2025	November 30, 2024
Options outstanding pursuant to stock-based compensation plans (in millions)	2.4	2.8