Property, Plant and Equipment (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions	Jun. 29, 2018	Sep. 29, 2017
Property, Plant and Equipment
Total property, plant and equipment, gross	$ 2,383.6	$ 2,059.0
Accumulated depreciation	(1,349.0)	(1,176.7)
Total property, plant and equipment, net	1,034.6	882.3
Land and improvements [Member]
Property, Plant and Equipment
Total property, plant and equipment, gross	11.6	11.6
Building and improvements [Member]
Property, Plant and Equipment
Total property, plant and equipment, gross	219.7	137.8
Furniture and fixtures [Member]
Property, Plant and Equipment
Total property, plant and equipment, gross	31.9	29.5
Machinery and equipment [Member]
Property, Plant and Equipment
Total property, plant and equipment, gross	1,897.2	1,715.3
Construction in progress [Member]
Property, Plant and Equipment
Total property, plant and equipment, gross	$ 223.2	$ 164.8