Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions	Sep. 28, 2018	Sep. 29, 2017
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 2,549.7	$ 2,059.0
Accumulated depreciation and amortization	(1,408.8)	(1,176.7)
Total property, plant and equipment, net	1,140.9	882.3
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	11.6	11.6
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	238.0	137.8
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	31.5	29.5
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	2,089.6	1,715.3
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 179.0	$ 164.8