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Commitments and Contingencies - Additional Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Dec. 30, 2017 USD ($) Employees | Dec. 31, 2016 USD ($) | Jan. 02, 2016 USD ($)
Commitments And Contingencies [Line Items] |  |  |
Rent expense, net of sub-lease rental income | $ | $ 35.2 | $ 31.2 | $ 29.4
Collective bargaining agreements expiration | 5 years |  |
Accrued legal matters | $ | $ 45.9 |  |
Judgment in Patent Related Litigation Matter [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Accrued legal matters | $ | 30.9 |  |
Judgment in Employment Related Litigation Matter [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Accrued legal matters | $ | $ 15.0 |  |
Workforce Subject to Collective Bargaining Arrangements [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of employees covered under collective bargaining agreements | 2,700 |  |
Percentage of employees covered under collective bargaining agreements | 21.00% |  |
Workforce Subject to Collective Bargaining Agreements Expiring in 2018 [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of employees covered under collective bargaining agreements | 1,450 |  |
Collective bargaining agreements year of expiration | 2018 |  |
Workforce Subject to Collective Bargaining Arrangements Expiring in 2019 [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of employees covered under collective bargaining agreements | 225 |  |
Collective bargaining agreements year of expiration | 2019 |  |
Workforce Subject to Collective Bargaining Arrangements Expiring in 2020 [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of employees covered under collective bargaining agreements | 825 |  |
Collective bargaining agreements year of expiration | 2020 |  |
Workforce Subject to Collective Bargaining Arrangements Expiring in 2021 [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of employees covered under collective bargaining agreements | 125 |  |
Collective bargaining agreements year of expiration | 2021 |  |
Workforce Subject to Collective Bargaining Arrangements Expiring in 2022 [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of employees covered under collective bargaining agreements | 25 |  |
Collective bargaining agreements year of expiration | 2022 |  |

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