Employee Benefit Plans (Components Of Net Pension Expense) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Compensation and Retirement Disclosure [Abstract]
Service cost – benefits earned during the period	$ 18.6	$ 20.2
Interest cost on projected benefits	16.3	15.1
Expected return on plan assets	(34.3)	(34.0)
Net amortization and deferral	2.1	4.8
Net pension expense	$ 2.7	$ 6.1