Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

Amount of assets pledged to secure a debt instrument.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Description of debt redemption features under terms of the debt agreement.

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Weighted average interest rate of debt outstanding.

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Description of the conditions for borrowing under the credit facility including the nature of any restrictions.

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The effective interest rate at the end of the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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DEBT Narrative (Details) - USD ($) $ in Thousands		3 Months Ended
DEBT Narrative (Details) - USD ($) $ in Thousands	Mar. 04, 2020	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Debt Instrument [Line Items]
Amount repaid		$ 104,615	$ 63,600
Revolving Credit Agreement [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		1,000,000		$ 1,200,000
Long-term debt		$ 500,000
Interest rate at period end - Revolving Credit Agreement		3.00%
Covenant terms		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.
Current remaining borrowing capacity		$ 495,900
Receivables Financing Agreement [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		125,000
Long-term debt		$ 67,800
Weighted average interest rate		1.80%
Collateral amount		$ 105,900
GoZone Bonds [Member]
Debt Instrument [Line Items]
Long-term debt				$ 365,400
Debt instrument, redemption, description		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.
Amount repaid	$ 43,300