Proceeds from bond issuances held by third party trustees pursuant to the terms of the bonds.

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

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- Definition

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.

+ References

No definition available.

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

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- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
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- Definition

Amount of cash inflow from debt classified as other.

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-SubTopic 10
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DEBT Narrative 3 (Details) - USD ($)				12 Months Ended
DEBT Narrative 3 (Details) - USD ($)	May 22, 2019	Jan. 15, 2018	Apr. 28, 2017	Dec. 31, 2019	Dec. 31, 2018	Mar. 04, 2020	Apr. 15, 2018	Jan. 14, 2018
6.00% senior notes
Debt Instrument [Line Items]
Long-term debt	$ 500,000,000.0			$ 500,000,000	$ 0
Stated interest rate				6.00%
Proceeds from debt, net of issuance costs	$ 491,600,000
Debt instrument, redemption, description				If we undergo a change of control, as defined in the supplemental indentures for the 6.75% senior notes, the 6.0% senior notes or the 5.625% senior notes, each holder of the 6.75% senior notes, the 6.0% senior notes or the 5.625% senior notes may require us to repurchase all or a portion of its notes at a price equal to 101% of the principal amount of the notes repurchased, plus any accrued and unpaid interest to the date of repurchase.
5.625% senior notes
Debt Instrument [Line Items]
Long-term debt			$ 550,000,000.0	$ 550,000,000.0	550,000,000
Stated interest rate			5.625%	5.625%
Proceeds from debt, net of issuance costs			$ 543,300,000
Debt instrument, redemption, description				If we undergo a change of control, as defined in the supplemental indentures for the 6.75% senior notes, the 6.0% senior notes or the 5.625% senior notes, each holder of the 6.75% senior notes, the 6.0% senior notes or the 5.625% senior notes may require us to repurchase all or a portion of its notes at a price equal to 101% of the principal amount of the notes repurchased, plus any accrued and unpaid interest to the date of repurchase.
4.80% senior notes
Debt Instrument [Line Items]
Long-term debt				$ 450,000,000	450,000,000
Stated interest rate				4.80%
6.75% senior notes
Debt Instrument [Line Items]
Long-term debt				$ 300,000,000	300,000,000
Stated interest rate				6.75%
Debt instrument, redemption, description				If we undergo a change of control, as defined in the supplemental indentures for the 6.75% senior notes, the 6.0% senior notes or the 5.625% senior notes, each holder of the 6.75% senior notes, the 6.0% senior notes or the 5.625% senior notes may require us to repurchase all or a portion of its notes at a price equal to 101% of the principal amount of the notes repurchased, plus any accrued and unpaid interest to the date of repurchase.
4.75% senior notes
Debt Instrument [Line Items]
Long-term debt				$ 250,000,000	250,000,000
Stated interest rate				4.75%
7.65% senior notes
Debt Instrument [Line Items]
Long-term debt							$ 350,000,000.0
Stated interest rate							7.65%
Subordinated Notes
Debt Instrument [Line Items]
Long-term debt				$ 402,500,000	402,500,000
Stated interest rate				8.70%				7.625%
Interest rate terms				an annual rate equal to the sum of the three-month LIBOR for the related quarterly interest period, plus 6.734% payable quarterly, commencing April 15, 2018, unless payment is deferred in accordance with the terms of the notes. NuStar Logistics may elect to defer interest payments on the Subordinated Notes on one or more occasions for up to five consecutive years.
Debt instrument redemption price, percentage		100.00%
Gulf Opportunity Zone revenue bonds
Debt Instrument [Line Items]
Long-term debt				$ 365,440,000	365,440,000
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 received from trustee				$ 0	$ 0
Amount remaining in trust				$ 43,232,000
Subsequent Event [Member] \| Gulf Opportunity Zone revenue bonds
Debt Instrument [Line Items]
Amount remaining in trust						$ 43,300,000