Employee Benefit Plans (Components Of Net Pension Expense) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Employee Benefit Plans [Abstract]
Service cost - benefits earned during the period	$ 16.8	$ 14.3
Interest cost on projected benefits	13.8	15.5
Expected return on plan assets	(27.4)	(24.4)
Net amortization and deferral	7.7	3.8
Net pension expense	10.9	9.2
Employer contributions	127.3
Expected future employer contribution	$ 7.0