Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Sep. 30, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 804.3		$ 804.3		$ 778.0
Accumulated depreciation	(309.5)		(309.5)		(274.1)
Property, plant and equipment, net	494.8		494.8		503.9
Depreciation expense	17.9	$ 17.3	55.7	$ 48.3
Land, Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	148.7		148.7		146.6
Machinery, Equipment And Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	406.1		406.1		380.8
Capital Leases [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	211.7		211.7		210.2
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 37.8		$ 37.8		$ 40.4