v3.24.1.1.u2
Document and Entity Information
May 31, 2024
Document And Entity Information [Line Items]  
Amendment Flag false
Entity Central Index Key 0001110805
Document Type 8-K
Document Period End Date May 31, 2024
Entity Registrant Name NuStar Energy L.P.
Entity Incorporation State Country Code DE
Entity File Number 001-16417
Entity Tax Identification Number 74-2956831
Entity Address, Address Line One 8111 Westchester Drive
Entity Address, Address Line Two Suite 400
Entity Address, City or Town Dallas
Entity Address, State or Province TX
Entity Address, Postal Zip Code 75225
City Area Code (214)
Local Phone Number 981-0700
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Series A Fixedto Floating Rate Cumulative Redeemable Perpetual Preferred Units [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 8.50% Series A Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units
Trading Symbol NSprA
Security Exchange Name NYSE
Series B Fixedto Floating Rate Cumulative Redeemable Perpetual Preferred Units [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 7.625% Series B Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units
Trading Symbol NSprB
Security Exchange Name NYSE
Series C Fixedto Floating Rate Cumulative Redeemable Perpetual Preferred Units [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 9.00% Series C Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units
Trading Symbol NSprC
Security Exchange Name NYSE