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Investments in and Acquisitions and Dispositions of Businesses - Summary of Acquisition and Purchase Price Allocation (Parenthetical) (Details) | 12 Months Ended
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Sep. 28, 2024 Business
Texas ,Florida And Nevada [Member] |
Business Acquisition [Line Items] |
Number of propane assets and operations acquired | 3
New Mexico [Member] |
Business Acquisition [Line Items] |
Number of propane assets and operations acquired | 1
Washington [Member] |
Business Acquisition [Line Items] |
Number of propane assets and operations acquired | 1

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-5 + Details
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Period Type: | duration

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- Definition The number of businesses acquired by the entity during the period. + References No definition available. + Details
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- Details
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- Details
Name: | us-gaap_BusinessAcquisitionAxis=sph_PropaneRetailerHeadquarteredInNewMexicoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_BusinessAcquisitionAxis=sph_PropaneRetailerHeadquarteredInWashingtonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |