Employee Benefit Plans (Components Of Net Pension (Income)/Expense) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Retirement Benefits [Abstract]
Service cost – benefits earned during the period	$ 1.3	$ 1.2
Interest cost on projected benefits	21.2	19.5
Expected return on plan assets	(29.0)	(31.9)
Net amortization and deferral	0.7	0.5
Settlement charges and special termination benefits	0.0	1.4
Net pension (income)/expense	$ (5.8)	$ (9.3)