Employee Benefit Plans (Components Of Net Pension Expense) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Employee Benefit Plans [Abstract]
Service cost - benefits earned during the period	$ 16.8	$ 14.3	$ 33.6	$ 28.6
Interest cost on projected benefits	13.8	15.5	27.5	31.0
Expected return on plan assets	(27.4)	(24.4)	(54.8)	(48.8)
Net amortization and deferral	7.7	3.7	15.5	7.5
Net pension expense	10.9	9.1	21.8	18.3
Employer contributions			130.1
Expected future employer contribution	$ 4.2		$ 4.2