v3.25.1
Cover
May 30, 2025
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date May 30, 2025
Securities Act File Number 001-14129
Entity Registrant Name STAR GROUP, L.P.
Entity Central Index Key 0001002590
Entity Tax Identification Number 06-1437793
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 9 West Broad Street
Entity Address, Address Line Two Suite 310
Entity Address, City or Town Stamford
Entity Address, State or Province CT
Entity Address, Postal Zip Code 06902
City Area Code (203)
Local Phone Number 328-7310
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Information, Former Legal or Registered Name Not Applicable
Common Units  
Document Information [Line Items]  
Title of 12(b) Security Common Units
Trading Symbol SGU
Security Exchange Name NYSE
Common Unit Purchase Rights  
Document Information [Line Items]  
Title of 12(b) Security Common Unit Purchase Rights
No Trading Symbol Flag true
Security Exchange Name NYSE