Document and Entity Information (USD $)
In Millions, except Share data, unless otherwise specified
6 Months Ended
Jun. 30, 2011
Aug. 05, 2011
Document and Entity Information [Abstract]    
Entity Registrant Name TESORO LOGISTICS LP  
Entity Central Index Key 0001507615  
Document Type 10-Q  
Document Period End Date Jun. 30, 2011  
Amendment Flag false  
Document Fiscal Year Focus 2011  
Document Fiscal Period Focus Q2  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status No  
Entity Filer Category Non-accelerated Filer  
Entity Public Float $ 363  
Entity Common Stock, Units Outstanding   14,950,000