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Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |
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Sep. 27, 2019 | Sep. 28, 2018
Finite-Lived Intangible Assets [Line Items] |  |
Accumulated amortization | $ 247,724 | $ 260,522
Acquired technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Accumulated amortization | $ 134,800 | 140,000
Weighted average useful life | 7 years |
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Accumulated amortization | $ 112,900 | $ 120,500
Weighted average useful life | 9 years |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + 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 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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- Details
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- Details
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