Employee Benefit Plans (Components Of Net Pension Expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Service cost – benefits earned during the period	$ 20.2	$ 17.6	$ 60.6	$ 52.8
Interest cost on projected benefits	14.9	16.8	45.0	50.6
Expected return on plan assets	(33.9)	(32.8)	(101.9)	(98.5)
Net amortization and deferral	4.8	2.8	14.4	8.3
Net pension expense	$ 6.0	$ 4.4	$ 18.1	$ 13.2