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Business Segments and Geographic Information - Revenues by Geography (Detail) | 3 Months Ended | 9 Months Ended
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Jun. 26, 2021 | Jun. 27, 2020 | Jun. 26, 2021 | Jun. 27, 2020
Schedule Of Geographical Segments [Line Items] |  |  |  |
Revenues | 100.00% | 100.00% | 100.00% | 100.00%
United States |  |  |  |
Schedule Of Geographical Segments [Line Items] |  |  |  |
Revenues | 64.20% | 80.30% | 68.40% | 76.90%
Europe |  |  |  |
Schedule Of Geographical Segments [Line Items] |  |  |  |
Revenues | 24.70% | 12.40% | 22.30% | 13.30%
Asia-Pacific |  |  |  |
Schedule Of Geographical Segments [Line Items] |  |  |  |
Revenues | 7.70% | 5.30% | 6.20% | 6.40%
Rest of World |  |  |  |
Schedule Of Geographical Segments [Line Items] |  |  |  |
Revenues | 3.40% | 2.00% | 3.10% | 3.40%

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- Definition Percentage of revenues. + References No definition available. + Details
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- Definition Schedule Of Geographical Segments [Line Items] + References No definition available. + Details
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- Details
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- Details
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- Details
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