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Goodwill and Other Intangibles - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 29, 2018 | Dec. 31, 2017
Finite Lived and Indefinite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 755,217 | $ 701,100
Accumulated Amortization | $ 502,383 | $ 472,705
Weighted-Average Amortization Period | 7 years | 7 years
Trademarks and In Process Research and Development [Member] |  |
Finite Lived and Indefinite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 13,827 | $ 13,923
Software Development [Member] |  |
Finite Lived and Indefinite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 455,312 | 438,652
Accumulated Amortization | $ 306,286 | $ 285,461
Weighted-Average Amortization Period | 5 years | 5 years
Purchased Intangibles [Member] |  |
Finite Lived and Indefinite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 203,170 | $ 169,870
Accumulated Amortization | $ 143,009 | $ 138,750
Weighted-Average Amortization Period | 11 years | 11 years
Licensing Agreements [Member] |  |
Finite Lived and Indefinite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 5,733 | $ 5,840
Accumulated Amortization | $ 4,901 | $ 4,628
Weighted-Average Amortization Period | 6 years | 6 years
Patents and Other Intangibles [Member] |  |
Finite Lived and Indefinite Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 77,175 | $ 72,815
Accumulated Amortization | $ 48,187 | $ 43,866
Weighted-Average Amortization Period | 8 years | 8 years

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before accumulated amortization of intangible assets, excluding goodwill. + References No definition available. + Details
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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. + Details
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