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PROPERTY, PLANT AND EQUIPMENT - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2026	Mar. 30, 2025	Mar. 29, 2026	Mar. 30, 2025	Sep. 30, 2025
Property, Plant and Equipment [Line Items]
Finance leases	$ 137.5		$ 137.5		$ 138.0
Property, plant and equipment	754.2		754.2		756.9
Accumulated depreciation	(511.7)		(511.7)		(501.9)
Property, plant and equipment, net	242.5		242.5		255.0
Depreciation expense	13.9	$ 14.0	29.5	$ 28.0
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	92.0		92.0		91.3
Machinery, equipment and other
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	352.0		352.0		359.6
Computer software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	147.4		147.4		146.3
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 25.3		$ 25.3		$ 21.7