Employee Benefit Plans (Components Of Net Pension Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Retirement Benefits [Abstract]
Service cost - benefits earned during the period	$ 59.8	$ 74.6	$ 80.8
Interest cost on projected benefits	78.6	65.4	60.0
Expected return on plan assets	(131.8)	(137.5)	(135.8)
Net amortization and deferral	0.1	8.4	19.1
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment	48.7	319.5	0.1
Net pension expense	$ 55.4	$ 330.4	$ 24.2