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Business Segments and Geographic Information - Revenues by Geography (Detail) | 12 Months Ended
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Sep. 28, 2019 | Sep. 29, 2018 | Sep. 30, 2017
Schedule Of Geographical Segments [Line Items] |  |  |
Revenues | 100.00% | 100.00% | 100.00%
United States |  |  |
Schedule Of Geographical Segments [Line Items] |  |  |
Revenues | 75.30% | 75.10% | 77.60%
Europe |  |  |
Schedule Of Geographical Segments [Line Items] |  |  |
Revenues | 11.80% | 11.70% | 10.00%
Asia-Pacific |  |  |
Schedule Of Geographical Segments [Line Items] |  |  |
Revenues | 8.50% | 8.60% | 8.10%
Rest of world |  |  |
Schedule Of Geographical Segments [Line Items] |  |  |
Revenues | 4.40% | 4.60% | 4.30%

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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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Namespace Prefix: |
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Balance Type: |
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- Details
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Namespace Prefix: |
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Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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