Employee Benefit Plans (Components Of Net Pension Expense) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Employee Benefit Plans [Abstract]
Service cost - benefits earned during the period	$ 14.3	$ 13.1	$ 28.6	$ 26.2
Interest cost on projected benefits	15.5	14.1	31.0	28.1
Expected return on plan assets	(24.4)	(22.1)	(48.8)	(44.1)
Net amortization and deferral	3.7	5.0	7.5	10.0
Net pension expense	$ 9.1	$ 10.1	$ 18.3	$ 20.2