XML 12 R1.htm IDEA: XBRL DOCUMENT v3.6.0.2
Document and Entity Information - shares
 3 Months Ended
Dec. 24, 2016
Jan. 30, 2017
Document And Entity Information [Abstract]    
Entity Registrant Name SUBURBAN PROPANE PARTNERS LP  
Entity Central Index Key 0001005210  
Current Fiscal Year End Date --09-30  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   61,057,973
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q1  
Document Type 10-Q  
Trading Symbol SPH  
Amendment Flag false  
Document Period End Date Dec. 24, 2016