Document and Entity Information - shares	3 Months Ended
	Dec. 26, 2015	Feb. 01, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	SUBURBAN PROPANE PARTNERS LP
Entity Central Index Key	0001005210
Current Fiscal Year End Date	--09-26
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		60,744,727
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1
Document Type	10-Q
Trading Symbol	SPH
Amendment Flag	false
Document Period End Date	Dec. 26, 2015