Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions	Jun. 28, 2020	Sep. 30, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 872.4	$ 913.9
Accumulated depreciation	(477.8)	(461.0)
Property, plant and equipment, net	394.6	452.9
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment	131.3	161.4
Machinery, equipment and other
Property, Plant and Equipment [Line Items]
Property, plant and equipment	511.0	523.6
Finance leases
Property, Plant and Equipment [Line Items]
Property, plant and equipment	198.9	197.2
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 31.2	$ 31.7