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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% |

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