Income Taxes (Schedule Of Unrecognized Tax Benefit) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefit beginning of year	$ 13.7	$ 19.1	$ 16.2
Tax positions related to current year:
Additions	2.2	1.0	3.4
Tax positions related to prior years:
Additions	0.3	1.8	1.4
Reductions	(0.1)	(6.3)	(0.5)
Settlements	(0.6)	(0.7)	0
Statute expirations	(0.5)	(1.2)	(1.4)
Unrecognized tax benefit end of year	$ 15.0	$ 13.7	$ 19.1