Retirement And Other Benefit Plans (Schedule Of Reconciliation Of Benefit Obligation) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Net benefit obligation at beginning of year	$ 87.2	$ 97.1
Service cost	0	0.1	0.1
Interest cost	4.0	3.6	3.8
Actuarial (gain) loss	5.1	(9.7)
Settlements	0	(0.3)
Gross benefits paid	(3.8)	(3.6)
Net benefit obligation at end of year	$ 92.5	$ 87.2	$ 97.1