v3.19.3.a.u2

DEBT Narrative 3 (Details) - USD ($) |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
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 |  |

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