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Goodwill and Other Intangible Assets - Carrying Values of Goodwill Assigned to Partnership's Operating Segments (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Sep. 24, 2016
--- | --- | ---
Goodwill [Line Items] |  |
Goodwill | $ 1,101,097 | $ 1,101,097
Accumulated adjustments | (6,462) | (6,462)
Goodwill, net | 1,094,635 | 1,094,635
Propane [Member] |  |
Goodwill [Line Items] |  |
Goodwill | 1,082,297 | 1,082,297
Accumulated adjustments | 0 | 0
Goodwill, net | 1,082,297 | 1,082,297
Fuel Oil and Refined Fuels [Member] |  |
Goodwill [Line Items] |  |
Goodwill | 10,900 | 10,900
Accumulated adjustments | (6,462) | (6,462)
Goodwill, net | 4,438 | 4,438
Natural Gas and Electricity [Member] |  |
Goodwill [Line Items] |  |
Goodwill | 7,900 | 7,900
Accumulated adjustments | 0 | 0
Goodwill, net | $ 7,900 | $ 7,900

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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 -Subparagraph (a) -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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + 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 accumulated impairment loss for 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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- Details
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- Details
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- Details
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