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Goodwill and Other Intangible Assets - Narrative (Detail) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 29, 2019 | Jun. 30, 2018 | Jun. 29, 2019 | Jun. 30, 2018 | Dec. 29, 2018
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |
Goodwill | $ 907,000,000.0 |  | $ 907,000,000.0 |  | $ 902,200,000
Accumulated impairment losses | 0 |  | $ 0 |  |
Weighted-average amortization period (in years) |  |  | 12 years |  |
Aggregate amortization expense | 5,400,000 | $ 6,400,000 | $ 10,800,000 | $ 13,000,000.0 |
Estimated annual amortization expense for fiscal period 2019 | 21,200,000 |  | 21,200,000 |  |
Estimated annual amortization expense for fiscal period 2020 | 18,300,000 |  | 18,300,000 |  |
Estimated annual amortization expense for fiscal period 2021 | 16,100,000 |  | 16,100,000 |  |
Estimated annual amortization expense for fiscal period 2022 | 13,300,000 |  | 13,300,000 |  |
Estimated annual amortization expense for fiscal period 2023 | 12,200,000 |  | 12,200,000 |  |
Estimated annual amortization expense for fiscal period 2024 | 10,000,000.0 |  | 10,000,000.0 |  |
Power Hawk Technologies Inc |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |
Goodwill | 6,900,000 |  | 6,900,000 |  |
TMB GeoMarketing Limited |  |  |  |  |
Acquired Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |  |  |
Goodwill | $ 1,300,000 |  | $ 1,300,000 |  |
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 |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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