v3.22.4
Document and Entity Information - shares
 3 Months Ended
Dec. 24, 2022
Jan. 30, 2023
Cover [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 Small Business false  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   63,489,392
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus Q1  
Document Type 10-Q  
Trading Symbol SPH  
Amendment Flag false  
Document Period End Date Dec. 24, 2022  
Security Exchange Name NYSE  
Title of 12(g) Security Common Units  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity File Number 1-14222  
Entity Interactive Data Current Yes  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 22-3410353  
Entity Address, Address Line One 240 Route 10 West  
Entity Address, City or Town Whippany  
Entity Address, State or Province NJ  
Entity Address, Postal Zip Code 07981  
City Area Code 973  
Local Phone Number 887-5300  
Document Quarterly Report true  
Document Transition Report false