Other (Income) Expense, Net - Schedule of Other Expense, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Other Income and Expenses [Abstract]
Unrealized gains on company-owned life insurance contracts and investments held in rabbi trusts	$ (2.5)	$ (1.8)
Interest income	(2.2)	(2.3)
Foreign exchange losses	0.3	0.3
Pension earnings, interest and deferrals	1.4	3.9
Total other (income) expense, net	$ (3.0)	$ 0.1