Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Sep. 30, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 911.7	$ 882.4
Accumulated depreciation	(446.8)	(382.4)
Property, plant and equipment, net	464.9	500.0
Land, Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	162.7	161.2
Machinery, Equipment And Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	519.1	489.3
Capital Leases [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	197.8	199.6
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 32.1	$ 32.3