v2.4.0.6
Document and Entity Information
3 Months Ended
Mar. 31, 2012
Entity Information [Line Items]  
Document Type 10-Q
Amendment Flag false
Document Period End Date Mar. 31, 2012
Document Fiscal Year Focus 2012
Document Fiscal Period Focus Q1
Trading Symbol ns
Entity Registrant Name NuStar Energy L.P.
Entity Central Index Key 0001110805
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Entity Common Stock, Shares Outstanding 70,756,078