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Quarterly Financial Data - Unaudited - Schedule of Quarterly Financial Data - Unaudited (Parenthetical) (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 26, 2015 | Sep. 27, 2014 | Jun. 28, 2014 | Sep. 26, 2015 | Sep. 27, 2014 | Sep. 28, 2013
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |
Non-cash impairment charge to indefinite-lived intangible assets | $ 7,300,000 |  |  | $ 7,300,000 | $ 0 | $ 0
Charge related to new products |  |  |  |  | $ 16,900,000 | $ 11,200,000
Gain on sale of manufacturing plant assets |  | $ 2,900,000 | $ 2,000,000 |  |  |

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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- Definition Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 + Details
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