Employee Benefit Plans (Components Of Net Pension (Income)/Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Retirement Benefits [Abstract]
Service cost – benefits earned during the year	$ 4.8	$ 5.7	$ 4.9
Interest cost on projected benefits	78.2	52.3	51.4
Expected return on plan assets	(127.5)	(127.9)	(121.3)
Net amortization and deferral	1.9	7.5	9.3
Special termination benefits, plan curtailments, and settlement charges	0.0	9.0	2.9
Net pension (income)/expense	$ (42.6)	$ (53.4)	$ (52.8)