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Business Segments and Geographic Information - Revenues by Geography (Detail) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 01, 2017 | Jun. 25, 2016 | Jul. 01, 2017 | Jun. 25, 2016
Schedule Of Geographical Segments [Line Items] |  |  |  |
Revenues | 100.00% | 100.00% | 100.00% | 100.00%
United States |  |  |  |
Schedule Of Geographical Segments [Line Items] |  |  |  |
Revenues | 76.70% | 78.70% | 78.10% | 78.70%
Europe |  |  |  |
Schedule Of Geographical Segments [Line Items] |  |  |  |
Revenues | 9.40% | 10.60% | 9.90% | 10.30%
Asia-Pacific |  |  |  |
Schedule Of Geographical Segments [Line Items] |  |  |  |
Revenues | 8.70% | 7.50% | 7.90% | 7.60%
All others |  |  |  |
Schedule Of Geographical Segments [Line Items] |  |  |  |
Revenues | 5.20% | 3.20% | 4.10% | 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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- Details
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