Employee Benefit Plans (Components Of Net Pension Expense) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Retirement Benefits [Abstract]
Service cost – benefits earned during the period	$ 14.9	$ 14.9	$ 44.8	$ 44.9
Interest cost on projected benefits	15.5	19.7	46.3	59.0
Expected return on plan assets	(29.5)	(32.9)	(88.4)	(98.9)
Net amortization and deferral	1.9	0.0	4.8	0.1
Settlement charges, special termination benefits and plan curtailment	17.0	(7.8)	22.1	(35.9)
Net pension expense	$ (14.2)	$ 9.5	$ (14.6)	$ 41.0