Income Taxes (Schedule Of Unrecognized Tax Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefit beginning of year	$ 15.0	$ 13.7	$ 19.1
Tax positions related to current year:
Additions	1.3	2.2	1.0
Tax positions related to prior years:
Additions	0.8	0.3	1.8
Reductions	(3.0)	(0.1)	(6.3)
Settlements	0.0	(0.6)	(0.7)
Statute expirations	0.0	(0.5)	(1.2)
Unrecognized tax benefit end of year	$ 14.1	$ 15.0	$ 13.7