Balance Sheet Information - Summary of Inventories (Detail) - USD ($) $ in Millions	Jun. 26, 2020	Dec. 27, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 116.4	$ 99.9
Work in process	63.7	57.6
Finished goods	13.7	14.9
Total	$ 193.8	$ 172.4

No definition available.

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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