Employee Benefit Plans (Components Of Net Pension (Income)/Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Retirement Benefits [Abstract]
Service cost – benefits earned during the period	$ 4.9	$ 59.7	$ 59.8
Interest cost on projected benefits	51.4	61.8	78.6
Expected return on plan assets	(121.3)	(117.9)	(131.8)
Net amortization and deferral	9.3	6.8	0.1
Special termination benefits, plan curtailments, and settlement charges	2.9	(22.0)	48.7
Net pension (income)/expense	$ (52.8)	$ (11.6)	$ 55.4