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Investments in and Acquisitions and Dispositions of Businesses Additional Information (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Mar. 09, 2022 | Feb. 17, 2022 | Mar. 26, 2022 | Sep. 24, 2022 | Sep. 25, 2021 | Sep. 26, 2020
Business Acquisition [Line Items] |  |  |  |  |  |
Investment plus direct transaction costs |  |  |  | $ 56,083 | $ 8,716 | $ 25,636
Proceeds from sale of business |  |  |  | $ 850 | $ 0 | $ 0
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] |  |  |  |  |  |
Investment plus direct transaction costs | $ 30,000 |  |  |  |  |
Percentage of equity interest | 25.00% |  |  |  |  |

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