Other Expense (Income), Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Other Income and Expenses [Abstract]
Unrealized gains on company-owned life insurance contracts and investments held in rabbi trusts	$ (1.6)	$ (2.4)	$ (0.6)	$ (2.2)
Foreign exchange loss	1.2	0.3	1.2	0.6
Interest income	(0.1)	0.0	(0.2)	0.0
Pension earnings, interest and deferrals expense (income)	2.5	(4.5)	4.9	(9.1)
Other	(0.1)	0.0
Other			0.1	0.0
Total other expense (income), net	$ 1.9	$ (6.6)	$ 5.4	$ (10.7)