Other Financial Information - Components of Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Oct. 02, 2020	Sep. 27, 2019
Property, Plant and Equipment [Line Items]
Finance leases	$ 11.5	$ 0.0
Property, plant and equipment and finance lease, gross	860.3	785.8
Accumulated depreciation and amortization	(515.4)	(474.3)
Total property, plant and equipment, net	344.9	311.5
Land and Land Improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	44.4	44.2
Buildings and Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	264.1	242.5
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	490.4	456.2
Construction in Progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 49.9	$ 42.9

Amount, before accumulated amortization, of right-of-use asset from finance lease.

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Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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