Document and Entity Information - USD ($)	12 Months Ended
	Sep. 26, 2015	Mar. 28, 2015
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 Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float		$ 2,600,814,000
Entity Common Stock, Shares Outstanding	60,531,070
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Document Type	10-K
Trading Symbol	SPH
Amendment Flag	false
Document Period End Date	Sep. 26, 2015