Property, Plant, and Equipment, Net (Details) - USD ($) $ in Millions	Dec. 27, 2024	Sep. 27, 2024
Property, Plant and Equipment [Line Items]
Total property, plant, and equipment, gross	$ 4,218.1	$ 4,210.1
Accumulated depreciation	(2,971.1)	(2,929.8)
Total property, plant, and equipment, net	1,247.0	1,280.3
Land and improvements
Property, Plant and Equipment [Line Items]
Total property, plant, and equipment, gross	11.9	11.9
Buildings and improvements
Property, Plant and Equipment [Line Items]
Total property, plant, and equipment, gross	621.4	610.2
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property, plant, and equipment, gross	90.1	81.3
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property, plant, and equipment, gross	3,419.7	3,418.0
Construction in progress
Property, Plant and Equipment [Line Items]
Total property, plant, and equipment, gross	$ 75.0	$ 88.7