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Investments in and Acquisitions and Dispositions of Businesses Additional Information (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 28, 2022 | Feb. 17, 2022 | Mar. 26, 2022 | Sep. 28, 2024 | Sep. 30, 2023 | Sep. 24, 2022
Business Acquisition [Line Items] |  |  |  |  |  |
Cash paid to acquire business |  |  |  | $ 25,152 | $ 130,124 | $ 56,083
Weighted average useful lives |  |  |  | 12 years |  |
Goodwill, Measurement Period Adjustment |  |  |  | $ 500 |  |
Business Combination, Acquisition Related Costs |  |  |  | 0 | 4,695 |
Proceeds from sale of business |  |  |  | $ 0 | $ 0 | $ 850
Customer Relationships [Member] | Sph All Other [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets | $ 42,924 |  |  |  |  |
Favorable Supply Contracts [Member] | Sph All Other [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Fair value of intangible assets | 5,100 |  |  |  |  |
Propane and Propane Retailer [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Proceeds from sale of business |  | $ 850 |  |  |  |
Gain on sale of assets |  |  | $ 363 |  |  |
Oberon |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of equity interest |  |  |  | 38.00% |  |
Independence Hydrogen, Inc. |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Percentage of equity interest |  |  |  | 25.00% |  |
RNG assets |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash paid to acquire business | $ 190,000 |  |  |  |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479405/805-10-25-23 + Details
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