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Goodwill (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Dec. 27, 2014
Sep. 27, 2014
Goodwill [Abstract]    
Projection period for discounted cash flow analyses to estimate reporting unit fair value 10 years  
Goodwill [Line Items]    
Goodwill $ 1,087,429us-gaap_Goodwill $ 1,087,429us-gaap_Goodwill
Propane [Member]    
Goodwill [Line Items]    
Goodwill 1,075,091us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= sph_PropaneMember		 1,075,091us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= sph_PropaneMember
Fuel oil and refined fuels [Member]    
Goodwill [Line Items]    
Goodwill 4,438us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= sph_FuelOilAndRefinedFuelsMember		 4,438us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= sph_FuelOilAndRefinedFuelsMember
Natural gas and electricity [Member]    
Goodwill [Line Items]    
Goodwill $ 7,900us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= sph_NaturalGasAndElectricityMember		 $ 7,900us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= sph_NaturalGasAndElectricityMember