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Summary of Significant Accounting Policies - Estimated Useful Life of Property Plant and Equipment by Category (Details) | 12 Months Ended
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Sep. 26, 2015
Buildings [Member] |
Property Plant And Equipment [Line Items] |
Estimated useful life of the asset (in years) | 40 years
Building and land improvements [Member] |
Property Plant And Equipment [Line Items] |
Estimated useful life of the asset (in years) | 20 years
Transportation equipment [Member] | Minimum [Member] |
Property Plant And Equipment [Line Items] |
Estimated useful life of the asset (in years) | 3 years
Transportation equipment [Member] | Maximum [Member] |
Property Plant And Equipment [Line Items] |
Estimated useful life of the asset (in years) | 15 years
Storage facilities [Member] | Minimum [Member] |
Property Plant And Equipment [Line Items] |
Estimated useful life of the asset (in years) | 7 years
Storage facilities [Member] | Maximum [Member] |
Property Plant And Equipment [Line Items] |
Estimated useful life of the asset (in years) | 30 years
Office equipment [Member] | Minimum [Member] |
Property Plant And Equipment [Line Items] |
Estimated useful life of the asset (in years) | 5 years
Office equipment [Member] | Maximum [Member] |
Property Plant And Equipment [Line Items] |
Estimated useful life of the asset (in years) | 10 years
Tanks and cylinders [Member} | Minimum [Member] |
Property Plant And Equipment [Line Items] |
Estimated useful life of the asset (in years) | 10 years
Tanks and cylinders [Member} | Maximum [Member] |
Property Plant And Equipment [Line Items] |
Estimated useful life of the asset (in years) | 40 years
Computer software [Member] | Minimum [Member] |
Property Plant And Equipment [Line Items] |
Estimated useful life of the asset (in years) | 3 years
Computer software [Member] | Maximum [Member] |
Property Plant And Equipment [Line Items] |
Estimated useful life of the asset (in years) | 7 years

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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 No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=sph_BuildingAndLandImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_TransportationEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=sph_StorageFacilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_OfficeEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=sph_EquipmentPrimarilyTanksAndCylindersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerSoftwareIntangibleAssetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |