XML 12 R1.htm IDEA: XBRL DOCUMENT v3.6.0.2
Document and Entity Information - shares
 3 Months Ended
Dec. 31, 2016
Jan. 31, 2017
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Dec. 31, 2016  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q1  
Trading Symbol SGU  
Entity Registrant Name STAR GAS PARTNERS LP  
Entity Central Index Key 0001002590  
Current Fiscal Year End Date --09-30  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   55,887,832