Employee Benefit Plans (Components Of Net Pension Expense) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Employee Benefit Plans [Abstract]
Service cost - benefits earned during the period	$ 14.3	$ 13.1	$ 42.9	$ 39.3
Interest cost on projected benefits	15.5	14.1	46.5	42.3
Expected return on plan assets	(24.4)	(22.1)	(73.2)	(66.3)
Net amortization and deferral	3.7	5.0	11.3	15.0
Net pension expense	$ 9.1	$ 10.1	$ 27.5	$ 30.3