Revenue Recognition - Narrative (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 29, 2019	Jun. 29, 2019	Dec. 29, 2018
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	$ 68.8	$ 68.8	$ 63.8
Contract with customer, liability, revenue recognized	$ 8.2	$ 35.2
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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- Definition

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

+ References

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-Publisher FASB
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- Definition

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.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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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