Revenue Recognition - Narrative (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 26, 2020	Sep. 26, 2020	Dec. 28, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue, performance obligation, description of timing		The remaining duration of these unsatisfied performance obligations range from one month up to 60 months.
Contract with customer, liability	$ 57.8	$ 57.8	$ 65.1
Contract with customer, liability, revenue recognized	$ 7.3	$ 49.7
Transferred at Point in Time \| Sales Revenue, Net \| Ship and Bill Performance Obligations
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Concentration risk, percentage		90.00%

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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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Description of timing for satisfying performance obligation in contract with customer. Includes, but is not limited to, as services are rendered, and upon shipment, delivery or completion of service.

+ References

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