Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions	Mar. 29, 2020	Sep. 30, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 857.4	$ 913.9
Accumulated depreciation	(461.2)	(461.0)
Property, plant and equipment, net	396.2	452.9
Land, Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	130.2	161.4
Machinery, Equipment And Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	501.6	523.6
Finance Leases [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	198.6	197.2
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 27.0	$ 31.7