DEBT	3 Months Ended
Mar. 31, 2020
Debt Disclosure [Abstract]
DEBT	DEBT Revolving Credit Agreement On March 6, 2020, NuStar Logistics amended its revolving credit agreement (the Revolving Credit Agreement) to, among other things, extend the maturity date from October 29, 2021 to October 27, 2023, reduce the total amount available for borrowing from $1.2 billion to $1.0 billion and increase the rates included in the definition of Applicable Rate contained in the Revolving Credit Agreement. On April 6, 2020, NuStar Logistics amended the Revolving Credit Agreement to allow for certain transactions related to the GoZone Bonds, as defined below. As of March 31, 2020, we had $500.0 million outstanding under the Revolving Credit Agreement. The Revolving Credit Agreement provides for U.S. dollar borrowings, which bear interest, at our option, based on an alternative base rate or a LIBOR-based rate. The interest rate on the Revolving Credit Agreement is subject to adjustment if our debt rating is downgraded (or upgraded) by certain credit rating agencies. In March 2020, S&P Global Ratings changed our rating outlook from stable to negative, and back to stable in April 2020. In April 2020, Fitch, Inc. downgraded our credit rating from BB to BB- and placed our rating on Rating Watch Negative and Moody’s Investor Service Inc. placed our rating under review for downgrade. These actions did not impact the interest rate on our Revolving Credit Agreement, which is the only debt arrangement with an interest rate that is subject to adjustment if our debt rating is downgraded (or upgraded) by certain credit rating agencies. As of March 31, 2020, our weighted-average interest rate related to borrowings under the Revolving Credit Agreement was 3.0%. For the rolling period of four quarters ending March 31, 2020, the consolidated debt coverage ratio (as defined in the Revolving Credit Agreement) could not exceed 5.00-to-1.00 and the consolidated interest coverage ratio (as defined in the Revolving Credit Agreement) must not be less than 1.75-to-1.00. The maximum consolidated debt coverage ratio and minimum consolidated interest coverage ratio requirements may limit the amount we can borrow under the Revolving Credit Agreement to an amount less than the total amount available for borrowing. As of March 31, 2020, we had $495.9 million available for borrowing, and we believe that we are in compliance with the covenants in the Revolving Credit Agreement. Receivables Financing Agreement NuStar Energy and NuStar Finance LLC (NuStar Finance), a special purpose entity and wholly owned subsidiary of NuStar Energy, are parties to a $125.0 million receivables financing agreement with third-party lenders (the Receivables Financing Agreement) and agreements with certain of NuStar Energy’s wholly owned subsidiaries (collectively with the Receivables Financing Agreement, the Securitization Program). NuStar Finance’s sole activity consists of purchasing receivables from NuStar Energy’s wholly owned subsidiaries that participate in the Securitization Program and providing these receivables as collateral for NuStar Finance’s revolving borrowings under the Securitization Program. NuStar Finance is a separate legal entity and the assets of NuStar Finance, including these accounts receivable, are not available to satisfy the claims of creditors of NuStar Energy, its subsidiaries selling receivables under the Securitization Program or their affiliates. The amount available for borrowing is based on the availability of eligible receivables and other customary factors and conditions. Borrowings by NuStar Finance under the Receivables Financing Agreement bear interest at the applicable bank rate, as defined under the Receivables Financing Agreement. The weighted average interest rate related to outstanding borrowings under the Securitization Program as of March 31, 2020 was 1.8%. As of March 31, 2020, $105.9 million of our accounts receivable is included in the Securitization Program. The amount of borrowings outstanding under the Receivables Financing Agreement totaled $67.8 million as of March 31, 2020, which is included in “Long-term debt, less current portion” on the consolidated balance sheet. Gulf Opportunity Zone Revenue Bonds In 2008, 2010 and 2011, the Parish of St. James, Louisiana issued Revenue Bonds Series 2008, Series 2010, Series 2010A, Series 2010B and Series 2011 associated with our St. James terminal expansions pursuant to the Gulf Opportunity Zone Act of 2005 (collectively, GoZone Bonds) for an aggregate $365.4 million. The interest rates on these bonds are currently based on a weekly tax-exempt bond market interest rate. Following the issuances, the proceeds were deposited with a trustee and were disbursed to us upon our request for reimbursement of expenditures related to our St. James terminal expansions. At the option of NuStar Logistics, during any period when the bonds bear interest at a daily or weekly rate, the GoZone Bonds may be redeemed in whole or in part on any interest payment date for 100% of the outstanding principal amount plus accrued interest to the redemption date. On March 4, 2020, NuStar Logistics repaid $43.3 million of GoZone Bonds with amounts that had not been used on our St. James terminal expansions and remained in trust. In addition, the holders of the GoZone Bonds may periodically require that the GoZone Bonds be repurchased, in whole or in part, requiring us to remarket the bonds. Current Maturities We expect to fund senior note maturities in 2020 and 2021 by utilizing senior note issuances in the capital markets, borrowings under our Revolving Credit Agreement or the Term Loan we entered into in April 2020, which is defined and described in Note 14. Therefore, the senior note maturities in 2020 and 2021 are classified as long-term debt. Although the Term Loan provides us the financial flexibility to fund these maturities in the near term, we plan to continue to monitor the debt capital markets for opportunities to raise additional capital at favorable terms.

On March 6, 2020, NuStar Logistics amended its revolving credit agreement (the Revolving Credit Agreement) to, among other things, extend the maturity date from October 29, 2021 to October 27, 2023, reduce the total amount available for borrowing from $1.2 billion to $1.0 billion and increase the rates included in the definition of Applicable Rate contained in the Revolving Credit Agreement. On April 6, 2020, NuStar Logistics amended the Revolving Credit Agreement to allow for certain transactions related to the GoZone Bonds, as defined below.

As of March 31, 2020, we had $500.0 million outstanding under the Revolving Credit Agreement. The Revolving Credit Agreement provides for U.S. dollar borrowings, which bear interest, at our option, based on an alternative base rate or a LIBOR-based rate. The interest rate on the Revolving Credit Agreement is subject to adjustment if our debt rating is downgraded (or upgraded) by certain credit rating agencies. In March 2020, S&P Global Ratings changed our rating outlook from stable to negative, and back to stable in April 2020. In April 2020, Fitch, Inc. downgraded our credit rating from BB to BB- and placed our rating on Rating Watch Negative and Moody’s Investor Service Inc. placed our rating under review for downgrade. These actions did not impact the interest rate on our Revolving Credit Agreement, which is the only debt arrangement with an interest rate that is subject to adjustment if our debt rating is downgraded (or upgraded) by certain credit rating agencies. As of March 31, 2020, our weighted-average interest rate related to borrowings under the Revolving Credit Agreement was 3.0%.

For the rolling period of four quarters ending March 31, 2020, the consolidated debt coverage ratio (as defined in the Revolving Credit Agreement) could not exceed 5.00-to-1.00 and the consolidated interest coverage ratio (as defined in the Revolving Credit Agreement) must not be less than 1.75-to-1.00. The maximum consolidated debt coverage ratio and minimum consolidated interest coverage ratio requirements may limit the amount we can borrow under the Revolving Credit Agreement to an amount less than the total amount available for borrowing. As of March 31, 2020, we had $495.9 million available for borrowing, and we believe that we are in compliance with the covenants in the Revolving Credit Agreement.

NuStar Energy and NuStar Finance LLC (NuStar Finance), a special purpose entity and wholly owned subsidiary of NuStar Energy, are parties to a $125.0 million receivables financing agreement with third-party lenders (the Receivables Financing Agreement) and agreements with certain of NuStar Energy’s wholly owned subsidiaries (collectively with the Receivables Financing Agreement, the Securitization Program). NuStar Finance’s sole activity consists of purchasing receivables from NuStar Energy’s wholly owned subsidiaries that participate in the Securitization Program and providing these receivables as collateral for NuStar Finance’s revolving borrowings under the Securitization Program. NuStar Finance is a separate legal entity and the assets of NuStar Finance, including these accounts receivable, are not available to satisfy the claims of creditors of NuStar Energy, its subsidiaries selling receivables under the Securitization Program or their affiliates. The amount available for borrowing is based on the availability of eligible receivables and other customary factors and conditions.

Borrowings by NuStar Finance under the Receivables Financing Agreement bear interest at the applicable bank rate, as defined under the Receivables Financing Agreement. The weighted average interest rate related to outstanding borrowings under the Securitization Program as of March 31, 2020 was 1.8%. As of March 31, 2020, $105.9 million of our accounts receivable is included in the Securitization Program. The amount of borrowings outstanding under the Receivables Financing Agreement totaled $67.8 million as of March 31, 2020, which is included in “Long-term debt, less current portion” on the consolidated balance sheet.

In 2008, 2010 and 2011, the Parish of St. James, Louisiana issued Revenue Bonds Series 2008, Series 2010, Series 2010A, Series 2010B and Series 2011 associated with our St. James terminal expansions pursuant to the Gulf Opportunity Zone Act of 2005 (collectively, GoZone Bonds) for an aggregate $365.4 million. The interest rates on these bonds are currently based on a weekly tax-exempt bond market interest rate. Following the issuances, the proceeds were deposited with a trustee and were disbursed to us upon our request for reimbursement of expenditures related to our St. James terminal expansions. At the option of NuStar Logistics, during any period when the bonds bear interest at a daily or weekly rate, the GoZone Bonds may be redeemed in whole or in part on any interest payment date for 100% of the outstanding principal amount plus accrued interest to the redemption date. On March 4, 2020, NuStar Logistics repaid $43.3 million of GoZone Bonds with amounts that had not been used on our St. James terminal expansions and remained in trust. In addition, the holders of the GoZone Bonds may periodically require that the GoZone Bonds be repurchased, in whole or in part, requiring us to remarket the bonds.

We expect to fund senior note maturities in 2020 and 2021 by utilizing senior note issuances in the capital markets, borrowings under our Revolving Credit Agreement or the Term Loan we entered into in April 2020, which is defined and described in Note 14. Therefore, the senior note maturities in 2020 and 2021 are classified as long-term debt. Although the Term Loan provides us the financial flexibility to fund these maturities in the near term, we plan to continue to monitor the debt capital markets for opportunities to raise additional capital at favorable terms.