Property and Equipment - Schedule of Property and Equipment (Detail) - USD ($) $ in Millions	Dec. 29, 2018	Dec. 30, 2017
Property, Plant and Equipment [Abstract]
Land	$ 31.7	$ 24.5
Buildings and improvements	368.6	357.4
Machinery, equipment and computer software	944.4	889.2
Property and equipment – gross	1,344.7	1,271.1
Accumulated depreciation and amortization	(849.6)	(786.7)
Property and equipment – net	$ 495.1	$ 484.4

Machinery, equipment and computer software.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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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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