XML 13 R1.htm IDEA: XBRL DOCUMENT v3.7.0.1
Document And Entity Information - shares
6 Months Ended
Jun. 30, 2017
Aug. 04, 2017
Document Information [Line Items]    
Entity Registrant Name SUNOCO LP  
Entity Central Index Key 0001552275  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Document Type 10-Q  
Document Period End Date Jun. 30, 2017  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Common Units [Member]    
Document Information [Line Items]    
Entity Partnership Units Outstanding   99,468,884
Common Class C [Member]    
Document Information [Line Items]    
Entity Partnership Units Outstanding   16,410,780
Preferred Units, Class [Domain]    
Document Information [Line Items]    
Entity Partnership Units Outstanding   12,000,000