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Short term investment original maturity period description.

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Significant Accounting Policies [Line Items]

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of gain (loss) on sale of accounts receivable.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle.

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The cash inflow associated with the sale of receivables arising from the financing of goods and services.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 26, 2020 USD ($) Customer	Dec. 28, 2019 USD ($) Customer	Dec. 29, 2018 USD ($)	Jan. 31, 2020 USD ($)	Jan. 02, 2020
Significant Accounting Policies [Line Items]
Highly liquid short-term investments maturity date	three months or less
Sale of accounts receivable	$ 740.0	$ 676.4	$ 604.7
Factoring costs associated with the sales of accounts receivable	13.2	16.7	14.5
Long-term core inventory	19.6	22.8
Total book value of equity method investments with fair value	8.5	19.3
Income from equity method investments	1.3	$ 3.2	2.2
Carrying book value of cost method investments	$ 5.0
Number of largest customers \| Customer	4	4
Credit Concentration Risk [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage	82.00%	80.00%
Supplier Concentration Risk [Member]
Significant Accounting Policies [Line Items]
Concentration risk percentage	77.00%	79.00%
Selling, General and Administrative Expenses [Member]
Significant Accounting Policies [Line Items]
Research and development costs	$ 20.7	$ 21.0	$ 20.1
Power Train Industries, Inc. [Member]
Significant Accounting Policies [Line Items]
Total book value of equity method investments with fair value				$ 12.3
Business acquisition, percentage of outstanding stock acquired				60.00%	60.00%
Minimum [Member]
Significant Accounting Policies [Line Items]
Estimated useful life of Property, Plant and Equipment	3 years
Maximum [Member]
Significant Accounting Policies [Line Items]
Estimated useful life of Property, Plant and Equipment	39 years