Other (Income) Expense, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Other Income and Expenses [Abstract]
Unrealized losses (gains) on company-owned life insurance contracts and investments held in rabbi trusts	$ 0.2	$ (1.4)
Foreign exchange loss	0.3	2.7
Pension earnings, interest and deferrals	(4.5)	1.0
Other	(0.1)	0.0
Total other (income) expense, net	$ (4.1)	$ 2.3