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Goodwill - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 26, 2015 | Sep. 27, 2014 | Sep. 28, 2013 | Sep. 29, 2012
Goodwill [Line Items] |  |  |  |
Additions in fiscal year | $ 856 | $ 2,477 | $ 3,242 |
Impairment losses in fiscal year |  |  | (7,709) |
Goodwill | 618,650 | 617,794 | 615,317 | $ 612,075
Accumulated impairment losses | (409,561) | (409,561) | (409,561) | (401,852)
Total goodwill | 209,089 | 208,233 | 205,756 | 210,223
Garden Products Segment [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Additions in fiscal year | 0 | 0 | 0 |
Impairment losses in fiscal year |  |  | (7,709) |
Goodwill | 213,583 | 213,583 | 213,583 | 213,583
Accumulated impairment losses | (213,583) | (213,583) | (213,583) | (205,874)
Total goodwill | 0 | 0 | 0 | 7,709
Pet Products Segment [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Additions in fiscal year | 856 | 2,477 | 3,242 |
Impairment losses in fiscal year |  |  | 0 |
Goodwill | 405,067 | 404,211 | 401,734 | 398,492
Accumulated impairment losses | (195,978) | (195,978) | (195,978) | (195,978)
Total goodwill | $ 209,089 | $ 208,233 | $ 205,756 | $ 202,514

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 3: 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 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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