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Goodwill and Other Intangible Assets - Narrative (Detail) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 29, 2018 | Jun. 30, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017 | Dec. 30, 2017
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill | $ 913,900,000 |  |  | $ 913,900,000 |  | $ 924,100,000
Goodwill impairment |  | $ 0 |  |  |  |
Accumulated impairment losses | 0 |  |  | $ 0 |  |
Weighted-average amortization period (in years) |  |  |  | 11 years |  |
Aggregate amortization expense | 6,200,000 |  | $ 7,100,000 | $ 19,200,000 | $ 20,700,000 |
Estimated annual amortization expense for fiscal period 2018 | 25,400,000 |  |  | 25,400,000 |  |
Estimated annual amortization expense for fiscal period 2019 | 23,200,000 |  |  | 23,200,000 |  |
Estimated annual amortization expense for fiscal period 2020 | 19,300,000 |  |  | 19,300,000 |  |
Estimated annual amortization expense for fiscal period 2021 | 16,000,000 |  |  | 16,000,000 |  |
Estimated annual amortization expense for fiscal period 2022 | 14,400,000 |  |  | 14,400,000 |  |
Estimated annual amortization expense for fiscal period 2023 | 12,500,000 |  |  | $ 12,500,000 |  |
Customer relationships |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Weighted-average amortization period (in years) |  |  |  | 15 years |  |
Customer relationship contractual term, minimum (in years) |  |  |  | 3 years |  |
Customer relationship contractual term, maximum (in years) |  |  |  | 5 years |  |
Norbar |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill | 25,100,000 |  |  | $ 25,100,000 |  |
Fastorq |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill | 2,600,000 |  |  | 2,600,000 |  |
TCS |  |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |  |
Goodwill | $ 2,000,000 |  |  | $ 2,000,000 |  |

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