NuStar Energy (NS) 10-Q 6 Aug 21 2021 Q2 Quarterly report Financial data

DEI Document

DEI Document - shares	6 Months Ended
	Jun. 30, 2021	Jul. 31, 2021
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	1-16417
Entity Registrant Name	NuStar Energy L.P.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	74-2956831
Entity Address, Street	19003 IH-10 West
Entity Address, City	San Antonio
Entity Address, State	TX
Entity Address, Zip Code	78257
City Area Code	210
Entity Local Phone Number	918-2000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Partnership Units Outstanding		109,532,470
Entity Central Index Key	0001110805
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Amendment Flag	false
Common Limited Partner [Member]
Document Information [Line Items]
Title of 12(b) Security	Common units
Trading Symbol	NS
Security Exchange Name	NYSE
Series A Preferred Limited Partner [Member]
Document Information [Line Items]
Title of 12(b) Security	Series A Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units
Trading Symbol	NSprA
Security Exchange Name	NYSE
Series B Preferred Limited Partner [Member]
Document Information [Line Items]
Title of 12(b) Security	Series B Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units
Trading Symbol	NSprB
Security Exchange Name	NYSE
Series C Preferred Limited Partner [Member]
Document Information [Line Items]
Title of 12(b) Security	Series C Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units
Trading Symbol	NSprC
Security Exchange Name	NYSE

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 23,500	$ 153,625
Accounts receivable, net	143,392	133,473
Inventories	12,812	11,059
Prepaid and other current assets	30,177	25,400
Total current assets	209,881	323,557
Property, plant and equipment, at cost	6,255,183	6,164,742
Accumulated depreciation and amortization	(2,323,020)	(2,207,230)
Property, plant and equipment, net	3,932,163	3,957,512
Intangible assets, net	604,497	630,209
Goodwill	766,416	766,416
Other long-term assets, net	133,023	139,324
Total assets	5,645,980	5,817,018
Current liabilities:
Accounts payable	70,484	71,731
Current portion of finance lease obligations	3,522	3,839
Accrued interest payable	39,161	50,847
Accrued liabilities	60,711	77,770
Taxes other than income tax	15,432	16,998
Total current liabilities	189,310	221,185
Long-term debt, less current portion	3,496,933	3,593,496
Deferred income tax liability	12,252	13,011
Other long-term liabilities	152,047	157,825
Total liabilities	3,850,542	3,985,517
Commitments and contingencies (Note 6)
Series D preferred limited partners (23,246,650 preferred units outstanding as of June 30, 2021 and December 31, 2020) (Note 8)	607,718	599,542
Partners’ equity (Note 9):
Common limited partners (109,532,026 and 109,468,127 common units outstanding as of June 30, 2021 and December 31, 2020, respectively)	523,711	572,314
Accumulated other comprehensive loss	(92,292)	(96,656)
Total partners’ equity	1,187,720	1,231,959
Total liabilities, mezzanine equity and partners’ equity	5,645,980	5,817,018
Series A Preferred Limited Partner [Member]
Partners’ equity (Note 9):
Preferred limited partners	218,307	218,307
Series B Preferred Limited Partner [Member]
Partners’ equity (Note 9):
Preferred limited partners	371,476	371,476
Series C Preferred Limited Partner [Member]
Partners’ equity (Note 9):
Preferred limited partners	$ 166,518	$ 166,518

CONSOLIDATED BALANCE SHEETS (pa

CONSOLIDATED BALANCE SHEETS (parenthetical) - shares	Jun. 30, 2021	Dec. 31, 2020
Series D preferred units outstanding	23,246,650	23,246,650
Limited partners common units outstanding	109,532,026	109,468,127
Series A Preferred Limited Partner [Member]
Preferred units outstanding	9,060,000	9,060,000
Series B Preferred Limited Partner [Member]
Preferred units outstanding	15,400,000	15,400,000
Series C Preferred Limited Partner [Member]
Preferred units outstanding	6,900,000	6,900,000

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues:
Total revenues	$ 427,093	$ 339,540	$ 788,739	$ 732,331
Costs and expenses:
Operating expenses (excluding depreciation and amortization expense)	100,493	101,078	187,780	201,260
Depreciation and amortization expense	68,964	69,214	137,382	137,275
Goodwill impairment loss	0	0	0	225,000
General and administrative expenses (excluding depreciation and amortization expense)	27,477	23,700	51,969	46,671
Other depreciation and amortization expense	1,913	2,171	3,960	4,357
Total costs and expenses	311,488	246,839	574,845	732,689
Operating income (loss)	115,605	92,701	213,894	(358)
Interest expense, net	(53,780)	(59,499)	(108,698)	(106,993)
Loss on extinguishment of debt	0	(3,842)	0	(3,842)
Other income (expense), net	2,896	2,216	3,294	(4,273)
Income (loss) before income tax expense	64,721	31,576	108,490	(115,466)
Income tax expense	1,338	1,810	2,850	2,409
Net income (loss)	$ 63,383	$ 29,766	$ 105,640	$ (117,875)
Basic net income (loss) per common unit (Note 10)	$ 0.25	$ (0.06)	$ 0.30	$ (1.74)
Diluted net income (loss) per common unit (Note 10)	$ 0.25	$ (0.06)	$ 0.30	$ (1.74)
Basic weighted-average common units outstanding	109,529,658	109,194,722	109,518,004	109,046,061
Diluted weighted-average common units outstanding	109,529,658	109,194,722	109,518,004	109,046,061
Comprehensive income (loss)	$ 65,627	$ 32,520	$ 110,004	$ (151,434)
Service [Member]
Revenues:
Total revenues	300,788	284,151	572,671	600,897
Costs and expenses:
Total costs associated with service revenues/Cost associated with product sales	169,457	170,292	325,162	338,535
Product [Member]
Revenues:
Total revenues	126,305	55,389	216,068	131,434
Costs and expenses:
Total costs associated with service revenues/Cost associated with product sales	$ 112,641	$ 50,676	$ 193,754	$ 118,126

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash Flows from Operating Activities:
Net income (loss)	$ 105,640	$ (117,875)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization expense	141,342	141,632
Amortization of unit-based compensation	7,154	5,193
Amortization of debt related items	6,025	3,976
Goodwill impairment loss	0	225,000
Changes in current assets and current liabilities (Note 11)	(43,333)	(6,174)
Decrease in other long-term assets	5,440	5,980
(Decrease) increase in other long-term liabilities	(6,162)	3,601
Other, net	(1,869)	9,108
Net cash provided by operating activities	214,237	270,441
Cash flows from investing activities:
Capital expenditures	(87,194)	(96,358)
Change in accounts payable related to capital expenditures	(5,345)	(15,509)
Proceeds from sale or disposition of assets	304	5,787
Net cash used in investing activities	(92,235)	(106,080)
Cash flows from financing activities:
Proceeds from Term Loan, net of discount and issuance costs	0	463,051
Proceeds from long-term debt borrowings	490,500	326,984
Proceeds from short-term debt borrowings	0	52,000
Long-term debt repayments	(588,300)	(704,715)
Short-term debt repayments	0	(57,500)
Distributions to preferred unitholders	(63,774)	(60,846)
Distributions to common unitholders	(87,623)	(108,846)
Payments for termination of interest rate swaps	0	(49,225)
Payment of tax withholding for unit-based compensation	(632)	(8,820)
Increase (decrease) in cash book overdrafts	458	(1,359)
Other, net	(3,482)	(13,043)
Net cash used in financing activities	(252,853)	(162,319)
Effect of foreign exchange rate changes on cash	727	(945)
Net (decrease) increase in cash, cash equivalents and restricted cash	(130,124)	1,097
Cash, cash equivalents and restricted cash as of the beginning of the period	162,426	24,980
Cash, cash equivalents and restricted cash as of the end of the period	$ 32,302	$ 26,077

CONSOLIDATED STATEMENTS OF PART

CONSOLIDATED STATEMENTS OF PARTNERS' EQUITY AND MEZZANINE EQUITY - USD ($) $ in Thousands	Total	AOCI [Member]	Preferred Limited Partner [Member]	Common Limited Partner [Member]	Series D Preferred Limited Partner [Member]
Partners' capital - beginning balance at Dec. 31, 2019	$ 1,776,210	$ (67,896)	$ 756,301	$ 1,087,805
Temporary equity - beginning balance at Dec. 31, 2019	581,935
Partners' capital and temporary equity - beginning balance at Dec. 31, 2019	2,358,145
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	(117,875)	0	32,066	(178,982)
Net income (loss) excluding portion attributable to temporary equity	(146,916)
Net income, temporary equity					$ 29,041
Other comprehensive income (loss)	(33,559)	(33,559)	0	0
Cash distributions to partners			(32,066)	(108,846)
Cash distributions to partners, temporary equity					(29,041)
Unit-based compensation	18,107	0	0	18,107
Series D Preferred Unit accretion, common	(9,966)			(9,966)
Series D Preferred Unit accretion, preferred					9,966
Series D Preferred Unit accretion, total	0
Other	0	0	0	0
Other, temporary equity					(6)
Other, including temporary equity	(6)
Partners' capital - ending balance at Jun. 30, 2020	1,462,964	(101,455)	756,301	808,118
Temporary equity - ending balance at Jun. 30, 2020	591,895
Partners' capital and temporary equity - ending balance at Jun. 30, 2020	2,054,859
Partners' capital - beginning balance at Mar. 31, 2020	1,507,814	(104,209)	756,301	855,722
Temporary equity - beginning balance at Mar. 31, 2020	586,837
Partners' capital and temporary equity - beginning balance at Mar. 31, 2020	2,094,651
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	29,766	0	16,033	(918)
Net income (loss) excluding portion attributable to temporary equity	15,115
Net income, temporary equity					14,651
Other comprehensive income (loss)	2,754	2,754	0	0
Cash distributions to partners			(16,033)	(43,677)
Cash distributions to partners, temporary equity					(14,651)
Unit-based compensation	2,056	0	0	2,056
Series D Preferred Unit accretion, common	(5,064)			(5,064)
Series D Preferred Unit accretion, preferred					5,064
Series D Preferred Unit accretion, total	0
Other	(1)	0	0	(1)
Other, temporary equity					(6)
Other, including temporary equity	(7)
Partners' capital - ending balance at Jun. 30, 2020	1,462,964	(101,455)	756,301	808,118
Temporary equity - ending balance at Jun. 30, 2020	591,895
Partners' capital and temporary equity - ending balance at Jun. 30, 2020	2,054,859
Partners' capital - beginning balance at Dec. 31, 2020	1,231,959	(96,656)	756,301	572,314
Temporary equity - beginning balance at Dec. 31, 2020	599,542
Partners' capital and temporary equity - beginning balance at Dec. 31, 2020	1,831,501
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	105,640	0	32,066	41,866
Net income (loss) excluding portion attributable to temporary equity	73,932
Net income, temporary equity					31,708
Other comprehensive income (loss)	4,364	4,364	0	0
Cash distributions to partners			(32,066)	(87,623)
Cash distributions to partners, temporary equity					(31,708)
Unit-based compensation	5,330	0	0	5,330
Series D Preferred Unit accretion, common	(8,176)			(8,176)
Series D Preferred Unit accretion, preferred					8,176
Series D Preferred Unit accretion, total	0
Partners' capital - ending balance at Jun. 30, 2021	1,187,720	(92,292)	756,301	523,711
Temporary equity - ending balance at Jun. 30, 2021	607,718
Partners' capital and temporary equity - ending balance at Jun. 30, 2021	1,795,438
Partners' capital - beginning balance at Mar. 31, 2021	1,199,302	(94,536)	756,301	537,537
Temporary equity - beginning balance at Mar. 31, 2021	603,563
Partners' capital and temporary equity - beginning balance at Mar. 31, 2021	1,802,865
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	63,383	0	16,033	31,496
Net income (loss) excluding portion attributable to temporary equity	47,529
Net income, temporary equity					15,854
Other comprehensive income (loss)	2,244	2,244	0	0
Cash distributions to partners			(16,033)	(43,812)
Cash distributions to partners, temporary equity					(15,854)
Unit-based compensation	2,652	0	0	2,652
Series D Preferred Unit accretion, common	(4,155)			(4,155)
Series D Preferred Unit accretion, preferred					4,155
Series D Preferred Unit accretion, total	0
Other	(7)	0	0	(7)
Other, temporary equity					$ 0
Other, including temporary equity	(7)
Partners' capital - ending balance at Jun. 30, 2021	1,187,720	$ (92,292)	$ 756,301	$ 523,711
Temporary equity - ending balance at Jun. 30, 2021	607,718
Partners' capital and temporary equity - ending balance at Jun. 30, 2021	$ 1,795,438

CONSOLIDATED STATEMENTS OF PA_2

CONSOLIDATED STATEMENTS OF PARTNERS' EQUITY AND MEZZANINE EQUITY (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Common Limited Partner [Member]
Cash distributions paid, per unit	$ 0.40	$ 0.40	$ 0.80	$ 1

ORGANIZATION AND BASIS OF PRESE

ORGANIZATION AND BASIS OF PRESENTATION	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ORGANIZATION AND BASIS OF PRESENTATION	ORGANIZATION AND BASIS OF PRESENTATION Organization and Operations NuStar Energy L.P. (NYSE: NS) is a Delaware limited partnership primarily engaged in the transportation, terminalling and storage of petroleum products and renewable fuels and the transportation of anhydrous ammonia. Unless otherwise indicated, the terms “NuStar Energy,” “NS,” “the Partnership,” “we,” “our” and “us” are used in this report to refer to NuStar Energy L.P., to one or more of our consolidated subsidiaries or to all of them taken as a whole. Our business is managed under the direction of the board of directors of NuStar GP, LLC, the general partner of our general partner, Riverwalk Logistics, L.P., both of which are indirectly wholly owned subsidiaries of ours. We conduct our operations through our subsidiaries, primarily NuStar Logistics, L.P. (NuStar Logistics) and NuStar Pipeline Operating Partnership L.P. (NuPOP). We have three business segments: pipeline, storage and fuels marketing. Recent Developments COVID-19. The coronavirus, or COVID-19, had a severe negative impact on global economic activity during 2020, significantly reducing demand for petroleum products and increasing the volatility of crude oil prices, beginning in March 2020. Amid signs of stabilization and improvement across the U.S. economy in 2021, ongoing uncertainty surrounding the COVID-19 pandemic has caused and may continue to cause volatility and could have a significant impact on management’s estimates and assumptions in 2021 and beyond. Senior Notes. On February 1, 2021, we repaid our $300.0 million of 6.75% senior notes at maturity with borrowings under our revolving credit agreement. Term Loan Credit Agreement. On February 16, 2021, we terminated an unsecured term loan credit agreement with certain lenders and Oaktree Fund Administration, LLC, as administrative agent for the lenders (the Term Loan). Please refer to Note 5 for further discussion about the Term Loan. Selby Terminal Fire. On October 15, 2019, our terminal facility in Selby, California experienced a fire that destroyed two storage tanks and temporarily shut down the terminal. For the six months ended June 30, 2021, we received insurance proceeds of $20.5 million and for the year ended December 31, 2020, we received insurance proceeds of $35.0 million, including $25.0 million for the six months ended June 30, 2020. Gains from business interruption insurance of $4.0 million and $3.1 million for the six months ended June 30, 2021 and June 30, 2020, respectively, are included in “Operating expenses” in the condensed consolidated statements of comprehensive income (loss). Insurance proceeds relate to cleanup costs and business interruption and are therefore included in “Cash flows from operating activities” in the consolidated statement of cash flows. We believe we have adequate insurance to offset additional costs. Basis of Presentation These unaudited condensed consolidated financial statements include the accounts of the Partnership and subsidiaries in which the Partnership has a controlling interest. Inter-partnership balances and transactions have been eliminated in consolidation. These unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim financial information and with the instructions to the Quarterly Report on Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934. Accordingly, they do not include all of the information and notes required by GAAP for complete consolidated financial statements. In the opinion of management, all adjustments considered necessary for a fair presentation have been included, and all disclosures are adequate. All such adjustments are of a normal recurring nature unless disclosed otherwise. Operating results for the six months ended June 30, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2020. We have reclassified certain previously reported amounts in the consolidated financial statements and notes to conform to current-period presentation.

NEW ACCOUNTING PRONOUNCEMENT

NEW ACCOUNTING PRONOUNCEMENT	6 Months Ended
	Jun. 30, 2021
Accounting Standards Update and Change in Accounting Principle [Abstract]
NEW ACCOUNTING PRONOUNCEMENT	NEW ACCOUNTING PRONOUNCEMENT Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity In August 2020, the Financial Accounting Standards Board (FASB) issued guidance intended to simplify the accounting for convertible instruments by eliminating certain accounting models for convertible debt instruments and convertible preferred stock, requiring the calculation of diluted earnings-per-unit to include the effect of potential unit settlement for any convertible instruments that may be settled in either cash or units, and amending the disclosure requirements for convertible instruments. The guidance is effective for annual periods beginning after December 15, 2021, and early adoption is permitted for annual periods beginning after December 15, 2020. Amendments may be applied using either a modified retrospective approach or a fully retrospective approach. We plan to adopt the amended guidance on January 1, 2022 using the modified retrospective approach. We are currently assessing the impact of this amended guidance on our financial position, results of operations and disclosures and plan to provide additional information about the expected impact at a future date.

GOODWILL IMPAIRMENT

GOODWILL IMPAIRMENT	6 Months Ended
	Jun. 30, 2021
Goodwill, Impaired [Abstract]
GOODWILL IMPAIRMENT	GOODWILL IMPAIRMENT In March 2020, the COVID-19 pandemic and actions taken by the Organization of Petroleum Exporting Countries and other oil-producing nations (OPEC+) resulted in severe disruptions in the capital and commodities markets, which led to significant decline in our unit price. As a result, our equity market capitalization fell significantly. The decline in crude oil prices and demand for petroleum products also led to a decline in expected earnings from some of our goodwill reporting units. These factors and others related to COVID-19 and OPEC+ caused us to conclude there were triggering events that occurred in March 2020 that required us to perform a goodwill impairment test as of March 31, 2020. We recognized a goodwill impairment charge of $225.0 million in the first quarter of 2020, which is reported in the pipeline segment. Our assessment did not identify any other reporting units at risk of a goodwill impairment. We calculated the estimated fair value of each of our reporting units using a weighted-average of values determined from an income approach and a market approach. The income approach involves estimating the fair value of each reporting unit by discounting its estimated future cash flows using a discount rate that would be consistent with a market participant’s assumption. The market approach bases the fair value measurement on information obtained from observed stock prices of public companies and recent merger and acquisition transaction data of comparable entities. In order to estimate the fair value of goodwill, management must make certain estimates and assumptions that affect the total fair value of the reporting unit including, among other things, an assessment of market conditions, projected cash flows, discount rates and growth rates. Management’s estimates of projected cash flows related to the reporting unit include, but are not limited to, future earnings of the reporting unit, assumptions about the use or disposition of assets included in the reporting unit, estimated remaining lives of those assets, and future expenditures necessary to maintain the asset’s existing service potential. The assumptions in the fair value measurement reflect the current market environment, industry-specific factors and company-specific factors. We assess goodwill for impairment annually on October 1, or more frequently if events or changes in circumstances indicate it might be impaired, and completed our most recent quantitative assessment on October 1, 2020. Although we determined that no impairment charges resulted from our October 1, 2020 impairment assessment, the fair value of the crude oil pipelines reporting unit, which is included in the pipeline reporting segment, exceeded its carrying value by approximately 4.0%. The goodwill associated with the crude oil pipelines reporting unit totaled $308.6 million as of June 30, 2021 and October 1, 2020. Considering that the carrying value of the reporting unit was written down to its fair value with the first quarter of 2020 impairment charge discussed above, changes to certain assumptions used in our estimate could cause the fair value to be less than the carrying value of the crude oil pipelines reporting unit, resulting in an impairment. We did not identify any factors that warrant an interim goodwill impairment test or an evaluation of the recoverability of the carrying value of our long-lived assets as of June 30, 2021. Management’s estimates are based on numerous assumptions about future operations and market conditions, which we believe to be reasonable but are inherently uncertain. The uncertainties underlying our assumptions and estimates, including uncertainty surrounding the COVID-19 pandemic, could differ significantly from actual results and lead to a different determination of the fair value of our assets.

REVENUE FROM CONTRACTS WITH CUS

REVENUE FROM CONTRACTS WITH CUSTOMERS	6 Months Ended
	Jun. 30, 2021
Revenue from Contract with Customer [Abstract]
REVENUE FROM CONTRACTS WITH CUSTOMERS	REVENUE FROM CONTRACTS WITH CUSTOMERS Contract Assets and Contract Liabilities The following table provides information about contract assets and contract liabilities from contracts with customers: 2021 2020 Contract Assets Contract Liabilities Contract Assets Contract Liabilities (Thousands of Dollars) Balances as of January 1: Current portion $ 2,694 $ (22,019) $ 2,140 $ (21,083) Noncurrent portion 932 (47,537) 1,003 (40,289) Total 3,626 (69,556) 3,143 (61,372) Activity: Additions 1,898 (19,401) 2,670 (34,156) Transfer to accounts receivable (2,055) — (2,258) — Transfer to revenues (250) 25,987 (125) 29,848 Total (407) 6,586 287 (4,308) Balances as of June 30: Current portion 2,590 (17,002) 2,218 (20,235) Noncurrent portion 629 (45,968) 1,212 (45,445) Total $ 3,219 $ (62,970) $ 3,430 $ (65,680) Remaining Performance Obligations The following table presents our estimated revenue from contracts with customers for remaining performance obligations that has not yet been recognized, representing our contractually committed revenue as of June 30, 2021 (in thousands of dollars): 2021 (remaining) $ 245,634 2022 399,345 2023 280,095 2024 189,149 2025 130,697 Thereafter 176,403 Total $ 1,421,323 Our contractually committed revenue, for purposes of the tabular presentation above, is generally limited to customer service contracts that have fixed pricing and fixed volume terms and conditions, generally including contracts with payment obligations for take-or-pay minimum volume commitments. Disaggregation of Revenues The following table disaggregates our revenues: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (Thousands of Dollars) Pipeline segment: Crude oil pipelines $ 82,034 $ 79,110 $ 156,622 $ 170,832 Refined products and ammonia pipelines (excluding lessor revenues) 110,872 86,173 205,512 189,307 Total pipeline segment revenues from contracts with customers 192,906 165,283 362,134 360,139 Lessor revenues — 825 — 1,650 Total pipeline segment revenues 192,906 166,108 362,134 361,789 Storage segment: Throughput terminals 35,143 32,199 59,937 70,922 Storage terminals (excluding lessor revenues) 73,742 76,880 147,158 151,046 Total storage segment revenues from contracts with customers 108,885 109,079 207,095 221,968 Lessor revenues 10,363 10,328 20,727 20,656 Total storage segment revenues 119,248 119,407 227,822 242,624 Fuels marketing segment: Revenues from contracts with customers 114,939 54,025 198,794 127,927 Consolidation and intersegment eliminations — — (11) (9) Total revenues $ 427,093 $ 339,540 $ 788,739 $ 732,331

DEBT

DEBT	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
DEBT	DEBT Revolving Credit Agreement On February 16, 2021, NuStar Logistics amended its $1.0 billion revolving credit agreement due October 27, 2023 (the Revolving Credit Agreement) to, among other things, expand certain adjustments related to our maximum consolidated debt coverage ratio and minimum consolidated interest coverage ratio. As of June 30, 2021, we had $185.0 million of borrowings outstanding and $809.8 million available for borrowing under the Revolving Credit Agreement. Letters of credit issued under the Revolving Credit Agreement totaled $5.2 million as of June 30, 2021 and limit the amount we can borrow under the Revolving Credit Agreement. Obligations under the Revolving Credit Agreement are guaranteed by NuStar Energy and NuPOP. 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. As of June 30, 2021, our weighted-average interest rate related to borrowings under the Revolving Credit Agreement was 2.6%. The Revolving Credit Agreement is subject to maximum consolidated debt coverage ratio and minimum consolidated interest coverage ratio requirements, which may limit the amount we can borrow under the Revolving Credit Agreement to an amount less than the total amount available for borrowing. For the rolling period of four quarters ended June 30, 2021, 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. As of June 30, 2021, we believe that we are in compliance with the covenants in the Revolving Credit Agreement. NuStar Logistics Senior Notes Senior Note Repayment. We repaid our $300.0 million of 6.75% senior notes due February 1, 2021 with borrowings under our Revolving Credit Agreement. Current Maturities. We expect to fund senior note maturities in February 2022 by utilizing borrowings under our Revolving Credit Agreement. Therefore, these senior note maturities are classified as long-term debt. Term Loan Credit Agreement On April 19, 2020, NuStar Energy and NuStar Logistics entered into an unsecured term loan credit agreement with certain lenders and Oaktree Fund Administration, LLC, as administrative agent for the lenders. The Term Loan provided for an aggregate commitment of up to $750.0 million pursuant to a three-year unsecured term loan credit facility. NuStar Logistics drew $500.0 million on April 21, 2020, which we repaid on September 16, 2020. On February 16, 2021, we terminated the Term Loan. 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 $100.0 million receivables financing agreement with a third-party lender (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 Energy provides a performance guarantee in connection with the Securitization Program. NuStar Finance’s sole activity consists of purchasing receivables from NuStar Energy’s 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 June 30, 2021 was 2.3%. As of June 30, 2021, $125.4 million of our accounts receivable was included in the Securitization Program. The amount of borrowings outstanding under the Receivables Financing Agreement totaled $74.2 million as of June 30, 2021. Fair Value of Long-Term Debt The estimated fair values and carrying amounts of long-term debt, excluding finance leases, were as follows: June 30, 2021 December 31, 2020 (Thousands of Dollars) Fair value $ 3,793,490 $ 3,799,378 Carrying amount $ 3,443,530 $ 3,539,258 We have estimated the fair value of our publicly traded notes based upon quoted prices in active markets; therefore, we determined that the fair value of our publicly traded notes falls in Level 1 of the fair value hierarchy. With regard to our other debt, for which a quoted market price is not available, we have estimated the fair value using a discounted cash flow analysis using current incremental borrowing rates for similar types of borrowing arrangements and determined that the fair value falls in Level 2 of the fair value hierarchy. The carrying amount includes net fair value adjustments, unamortized discounts and unamortized debt issuance costs.

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES We have contingent liabilities resulting from various litigation, claims and commitments. We record accruals for loss contingencies when losses are considered probable and can be reasonably estimated. Legal fees associated with defending the Partnership in legal matters are expensed as incurred. We accrued $0.1 million and $2.6 million for contingent losses as of June 30, 2021 and December 31, 2020, respectively. The amount that will ultimately be paid related to such matters may differ from the recorded accruals, and the timing of such payments is uncertain. We evaluate each contingent loss at least quarterly, and more frequently as each matter progresses and develops over time, and we do not believe that the resolution of any particular claim or proceeding, or all matters in the aggregate, would have a material adverse effect on our results of operations, financial position or liquidity.

DERIVATIVES

DERIVATIVES	6 Months Ended
	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES	DERIVATIVES We utilize various derivative instruments to manage our exposure to interest rate risk and commodity price risk. Our risk management policies and procedures are designed to monitor interest rates, futures and swap positions and over-the-counter positions, as well as physical commodity volumes, grades, locations and delivery schedules, to help ensure that our hedging activities address our market risks. Derivative financial instruments associated with commodity price risk with respect to our petroleum product inventories and related firm commitments to purchase and/or sell such inventories were not material for any periods presented. We were a party to certain interest rate swap agreements to manage our exposure to changes in interest rates, which consisted of forward-starting interest rate swap agreements related to a forecasted debt issuance in 2020. We entered into these swaps in order to hedge the risk of fluctuations in the required interest payments attributable to changes in the benchmark interest rate during the period from the effective date of the swap to the issuance of the forecasted debt. Under the terms of the swaps, we paid a weighted-average fixed rate and received a rate based on the three-month USD LIBOR. These swaps qualified as cash flow hedges, and we designated them as such. We recorded mark-to-market adjustments as a component of “Accumulated other comprehensive loss” (AOCI), and the amount in AOCI is recognized in “Interest expense, net” as the forecasted interest payments occur or if the interest payments are probable not to occur. In June 2020, we terminated forward-starting interest rate swaps with an aggregate notional amount of $250.0 million and paid $49.2 million, which is amortized into “Interest expense, net” as the related forecasted interest payments occur. Our forward-starting interest rate swaps had the following impact on earnings: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (Thousands of Dollars) Loss recognized in other comprehensive loss on derivative $ — $ (461) $ — $ (30,291) Loss reclassified from AOCI into interest expense, net $ (1,335) $ (878) $ (2,683) $ (1,525) As of June 30, 2021, we expect to reclassify a loss of $4.0 million to “Interest expense, net” within the next twelve months associated with unwound forward-starting interest rate swaps.

SERIES D CUMULATIVE CONVERTIBLE

SERIES D CUMULATIVE CONVERTIBLE PREFERRED UNITS	6 Months Ended
	Jun. 30, 2021
Temporary Equity Disclosure [Abstract]
SERIES D CUMULATIVE COVERTIBLE PREFERRED UNITS	SERIES D CUMULATIVE CONVERTIBLE PREFERRED UNITS Distributions on the Series D Cumulative Convertible Preferred Units (Series D Preferred Units) are payable out of any legally available funds, accrue and are cumulative from the original issuance dates, and are payable on the 15th day (or next business day) of each of March, June, September and December, to holders of record on the first business day of each payment month. The distribution rates on the Series D Preferred Units are as follows: (i) 9.75%, or $57.6 million, per annum ($0.619 per unit per distribution period) for the first two years (beginning with the September 17, 2018 distribution); (ii) 10.75%, or $63.4 million, per annum ($0.682 per unit per distribution period) for years three through five; and (iii) the greater of 13.75%, or $81.1 million, per annum ($0.872 per unit per distribution period) or the distribution per common unit thereafter. While the Series D Preferred Units are outstanding, the Partnership will be prohibited from paying distributions on any junior securities, including the common units, unless full cumulative distributions on the Series D Preferred Units (and any parity securities) have been, or contemporaneously are being, paid or set aside for payment through the most recent Series D Preferred Unit distribution payment date. Any Series D Preferred Unit distributions in excess of $0.635 per unit may be paid, in the Partnership’s sole discretion, in additional Series D Preferred Units, with the remainder paid in cash. In July 2021, our board of directors declared distributions of $0.682 per Series D Preferred Unit to be paid on September 15, 2021.

PARTNERS' EQUITY

PARTNERS' EQUITY	6 Months Ended
	Jun. 30, 2021
Partners' Capital Notes [Abstract]
PARTNERS' EQUITY	PARTNERS' EQUITY Series A, B and C Preferred Units We allocate net income to our 8.50% Series A, 7.625% Series B and 9.00% Series C Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units (collectively, the Series A, B and C Preferred Units) equal to the amount of distributions earned during the period. Distributions on our Series A, B and C Preferred Units are payable out of any legally available funds, accrue and are cumulative from the original issuance dates, and are payable on the 15th day (or next business day) of each of March, June, September and December of each year to holders of record on the first business day of each payment month as follows (until the distribution rate changes to a floating rate): Units Fixed Distribution Rate Per Unit Per Quarter Fixed Distribution Date at Which Distribution (Thousands of Dollars) Series A Preferred Units $ 0.53125 $ 4,813 December 15, 2021 Series B Preferred Units $ 0.47657 $ 7,339 June 15, 2022 Series C Preferred Units $ 0.56250 $ 3,881 December 15, 2022 In July 2021, our board of directors declared distributions with respect to the Series A, B and C Preferred Units to be paid on September 15, 2021. Common Limited Partners We make quarterly distributions to common unitholders of 100% of our “Available Cash,” generally defined as cash receipts less cash disbursements, including distributions to our preferred units , and cash reserves established by the general partner, in its sole discretion. These quarterly distributions are declared and paid within 45 days subsequent to each quarter-end. The common unitholders receive a distribution each quarter as determined by the board of directors, subject to limitation by the distributions in arrears, if any, on our preferred units. The following table summarizes information about quarterly cash distributions declared for our common limited partners: Quarter Ended Cash Distributions Total Cash Record Date Payment Date (Thousands of Dollars) June 30, 2021 $ 0.40 $ 43,814 August 6, 2021 August 12, 2021 March 31, 2021 $ 0.40 $ 43,834 May 10, 2021 May 14, 2021 December 31, 2020 $ 0.40 $ 43,787 February 8, 2021 February 12, 2021 Accumulated Other Comprehensive Income (Loss) The balance of and changes in the components included in AOCI were as follows: Three Months Ended June 30, 2021 2020 Foreign Currency Translation Cash Flow Hedges Pension and Other Postretirement Benefits Total Foreign Currency Translation Cash Flow Hedges Pension and Other Postretirement Benefits Total (Thousands of Dollars) Balance as of March 31 $ (41,405) $ (40,802) $ (12,329) $ (94,536) $ (50,600) $ (45,307) $ (8,302) $ (104,209) Other comprehensive income (loss): Other comprehensive income (loss) before reclassification adjustments 1,094 — — 1,094 2,638 (461) — 2,177 Net gain on pension costs reclassified into other income, net — — (187) (187) — — (305) (305) Net loss on cash flow hedges reclassified into interest expense, net — 1,335 — 1,335 — 878 — 878 Other — — 2 2 — — 4 4 Other comprehensive income (loss) 1,094 1,335 (185) 2,244 2,638 417 (301) 2,754 Balance as of June 30 $ (40,311) $ (39,467) $ (12,514) $ (92,292) $ (47,962) $ (44,890) $ (8,603) $ (101,455) Six Months Ended June 30, 2021 2020 Foreign Cash Flow Pension and Total Foreign Cash Flow Pension and Total (Thousands of Dollars) Balance as of January 1 $ (42,362) $ (42,150) $ (12,144) $ (96,656) $ (43,772) $ (16,124) $ (8,000) $ (67,896) Other comprehensive income (loss): Other comprehensive income (loss) before reclassification adjustments 2,051 — — 2,051 (4,190) (30,291) — (34,481) Net gain on pension costs reclassified into other income, net — — (374) (374) — — (610) (610) Net loss on cash flow hedges reclassified into interest expense, net — 2,683 — 2,683 — 1,525 — 1,525 Other — — 4 4 — — 7 7 Other comprehensive income (loss) 2,051 2,683 (370) 4,364 (4,190) (28,766) (603) (33,559) Balance as of June 30 $ (40,311) $ (39,467) $ (12,514) $ (92,292) $ (47,962) $ (44,890) $ (8,603) $ (101,455)

NET INCOME (LOSS) PER COMMON UN

NET INCOME (LOSS) PER COMMON UNIT	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
NET INCOME (LOSS) PER COMMON UNIT	NET INCOME (LOSS) PER COMMON UNIT Basic net income (loss) per common unit is determined pursuant to the two-class method. Under this method, all earnings are allocated to our limited partners and participating securities based on their respective rights to receive distributions earned during the period. Participating securities include restricted units awarded under our long-term incentive plans. We compute basic net income (loss) per common unit by dividing net income (loss) attributable to common units by the weighted-average number of common units outstanding during the period. We compute diluted net income (loss) per common unit by dividing net income (loss) attributable to common units by the sum of (i) the weighted average number of common units outstanding during the period and (ii) the effect of dilutive potential common units outstanding during the period. Dilutive potential common units may include contingently issuable performance unit awards and the Series D Preferred Units. The Series D Preferred Units are convertible into common units at the option of the holder at any time on or after June 29, 2020. As such, we calculated the dilutive effect of the Series D Preferred Units using the if-converted method. The effect of the assumed conversion of the Series D Preferred Units outstanding as of the end of each period presented was antidilutive; therefore, we did not include such conversion in the computation of diluted net income (loss) per common unit. Contingently issuable performance units are included as dilutive potential common units if it is probable that that performance measures will be achieved, unless to do so would be antidilutive. There were no dilutive potential common units outstanding related to the performance units for all periods presented. The following table details the calculation of net income (loss) per common unit: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (Thousands of Dollars, Except Unit and Per Unit Data) Net income (loss) $ 63,383 $ 29,766 $ 105,640 $ (117,875) Distributions to preferred limited partners (31,887) (30,684) (63,774) (61,107) Distributions to common limited partners (43,814) (43,678) (87,648) (87,408) Distribution equivalent rights to restricted units (586) (502) (1,184) (1,008) Distributions in excess of income (loss) $ (12,904) $ (45,098) $ (46,966) $ (267,398) Distributions to common limited partners $ 43,814 $ 43,678 $ 87,648 $ 87,408 Allocation of distributions in excess of income (loss) (12,904) (45,098) (46,966) (267,398) Series D Preferred Unit accretion (4,155) (5,064) (8,176) (9,966) Net income (loss) attributable to common units $ 26,755 $ (6,484) $ 32,506 $ (189,956) Basic and diluted weighted-average common units outstanding 109,529,658 109,194,722 109,518,004 109,046,061 Basic and diluted net income (loss) per common unit $ 0.25 $ (0.06) $ 0.30 $ (1.74)

SUPPLEMENTAL CASH FLOW INFORMAT

SUPPLEMENTAL CASH FLOW INFORMATION	6 Months Ended
	Jun. 30, 2021
Supplemental Cash Flow Information [Abstract]
SUPPLEMENTAL CASH FLOW INFORMATION	SUPPLEMENTAL CASH FLOW INFORMATION Changes in current assets and current liabilities were as follows: Six Months Ended June 30, 2021 2020 (Thousands of Dollars) Decrease (increase) in current assets: Accounts receivable $ (9,942) $ 25,386 Inventories (1,744) 4,176 Other current assets (4,752) (8,781) Increase (decrease) in current liabilities: Accounts payable 3,588 (15,197) Accrued interest payable (11,686) (177) Accrued liabilities (17,222) (11,625) Taxes other than income tax (1,575) 44 Changes in current assets and current liabilities $ (43,333) $ (6,174) The above changes in current assets and current liabilities differ from changes between amounts reflected in the applicable consolidated balance sheets due to: • the change in the amount accrued for capital expenditures; • the effect of foreign currency translation; • payments for the termination of interest rate swaps included in cash flows from financing activities; and • the effect of accrued compensation expense paid with fully vested common unit awards. Cash flows related to interest and income taxes were as follows: Six Months Ended June 30, 2021 2020 (Thousands of Dollars) Cash paid for interest, net of amount capitalized $ 114,339 $ 103,034 Cash paid for income taxes, net of tax refunds received $ 5,882 $ 4,661 As of June 30, 2021 and December 31, 2020, restricted cash, representing legally restricted funds that are unavailable for general use, is included in "Other long-term assets, net" on the consolidated balance sheets. “Cash, cash equivalents and restricted cash” on the consolidated statements of cash flows was included in the consolidated balance sheets as follows: June 30, 2021 December 31, 2020 (Thousands of Dollars) Cash and cash equivalents $ 23,500 $ 153,625 Other long-term assets, net 8,802 8,801 Cash, cash equivalents and restricted cash $ 32,302 $ 162,426

SEGMENT INFORMATION

SEGMENT INFORMATION	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION Our reportable business segments consist of the pipeline, storage and fuels marketing segments. Our segments represent strategic business units that offer different services and products. We evaluate the performance of each segment based on its respective operating income (loss), before general and administrative expenses and certain non-segmental depreciation and amortization expense. General and administrative expenses are not allocated to the operating segments since those expenses relate primarily to the overall management at the entity level. Results of operations for the reportable segments were as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (Thousands of Dollars) Revenues: Pipeline $ 192,906 $ 166,108 $ 362,134 $ 361,789 Storage 119,248 119,407 227,822 242,624 Fuels marketing 114,939 54,025 198,794 127,927 Consolidation and intersegment eliminations — — (11) (9) Total revenues $ 427,093 $ 339,540 $ 788,739 $ 732,331 Operating income (loss): Pipeline $ 96,512 $ 71,981 $ 175,891 $ (50,943) Storage 46,185 43,242 88,903 91,821 Fuels marketing 2,298 3,349 5,029 9,792 Total segment operating income 144,995 118,572 269,823 50,670 General and administrative expenses 27,477 23,700 51,969 46,671 Other depreciation and amortization expense 1,913 2,171 3,960 4,357 Total operating income (loss) $ 115,605 $ 92,701 $ 213,894 $ (358) Total assets by reportable segment were as follows: June 30, 2021 December 31, 2020 (Thousands of Dollars) Pipeline $ 3,540,298 $ 3,609,508 Storage 1,918,515 1,897,167 Fuels marketing 43,537 31,967 Total segment assets 5,502,350 5,538,642 Other partnership assets 143,630 278,376 Total consolidated assets $ 5,645,980 $ 5,817,018

SUBSEQUENT EVENT

SUBSEQUENT EVENT	6 Months Ended
	Jun. 30, 2021
Subsequent Events [Abstract]
SUBSEQUENT EVENT	SUBSEQUENT EVENT On August 1, 2021, we entered into an agreement to sell our storage facilities at eight locations, including all our North East Terminals and our one terminal in Florida to Sunoco LP for $250.0 million, subject to adjustment. During July 2021, sale negotiations with the potential buyer progressed significantly and management with appropriate authority agreed to the sale. The terminals have an aggregate storage capacity of 14.8 million barrels and are included in the storage segment. We expect to complete the sale by the beginning of the fourth quarter and will utilize the sales proceeds to improve our debt metrics. The book value at closing, including an allocation of goodwill for the terminal reporting unit, is expected to exceed the agreed purchase price and result in an estimated non-cash loss in the range of $130.0 million to $140.0 million in the third quarter of 2021.

REVENUE FROM CONTRACTS WITH C_2

REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)	6 Months Ended
	Jun. 30, 2021
Revenue from Contract with Customer [Abstract]
Contract with Customer, Asset and Liability [Table Text Block]	The following table provides information about contract assets and contract liabilities from contracts with customers: 2021 2020 Contract Assets Contract Liabilities Contract Assets Contract Liabilities (Thousands of Dollars) Balances as of January 1: Current portion $ 2,694 $ (22,019) $ 2,140 $ (21,083) Noncurrent portion 932 (47,537) 1,003 (40,289) Total 3,626 (69,556) 3,143 (61,372) Activity: Additions 1,898 (19,401) 2,670 (34,156) Transfer to accounts receivable (2,055) — (2,258) — Transfer to revenues (250) 25,987 (125) 29,848 Total (407) 6,586 287 (4,308) Balances as of June 30: Current portion 2,590 (17,002) 2,218 (20,235) Noncurrent portion 629 (45,968) 1,212 (45,445) Total $ 3,219 $ (62,970) $ 3,430 $ (65,680)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]	The following table presents our estimated revenue from contracts with customers for remaining performance obligations that has not yet been recognized, representing our contractually committed revenue as of June 30, 2021 (in thousands of dollars): 2021 (remaining) $ 245,634 2022 399,345 2023 280,095 2024 189,149 2025 130,697 Thereafter 176,403 Total $ 1,421,323
Disaggregation of Revenue [Table Text Block]	The following table disaggregates our revenues: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (Thousands of Dollars) Pipeline segment: Crude oil pipelines $ 82,034 $ 79,110 $ 156,622 $ 170,832 Refined products and ammonia pipelines (excluding lessor revenues) 110,872 86,173 205,512 189,307 Total pipeline segment revenues from contracts with customers 192,906 165,283 362,134 360,139 Lessor revenues — 825 — 1,650 Total pipeline segment revenues 192,906 166,108 362,134 361,789 Storage segment: Throughput terminals 35,143 32,199 59,937 70,922 Storage terminals (excluding lessor revenues) 73,742 76,880 147,158 151,046 Total storage segment revenues from contracts with customers 108,885 109,079 207,095 221,968 Lessor revenues 10,363 10,328 20,727 20,656 Total storage segment revenues 119,248 119,407 227,822 242,624 Fuels marketing segment: Revenues from contracts with customers 114,939 54,025 198,794 127,927 Consolidation and intersegment eliminations — — (11) (9) Total revenues $ 427,093 $ 339,540 $ 788,739 $ 732,331

DEBT (Tables)

DEBT (Tables)	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Fair Value and Carrying Value of Debt [Table Text Block]	The estimated fair values and carrying amounts of long-term debt, excluding finance leases, were as follows: June 30, 2021 December 31, 2020 (Thousands of Dollars) Fair value $ 3,793,490 $ 3,799,378 Carrying amount $ 3,443,530 $ 3,539,258

DERIVATIVES (Tables)

DERIVATIVES (Tables)	6 Months Ended
	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Text Block]	Our forward-starting interest rate swaps had the following impact on earnings: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (Thousands of Dollars) Loss recognized in other comprehensive loss on derivative $ — $ (461) $ — $ (30,291) Loss reclassified from AOCI into interest expense, net $ (1,335) $ (878) $ (2,683) $ (1,525)

PARTNERS' EQUITY (Tables)

PARTNERS' EQUITY (Tables)	6 Months Ended
	Jun. 30, 2021
Distribution Made to Preferred Limited Partner [Line Items]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The balance of and changes in the components included in AOCI were as follows: Three Months Ended June 30, 2021 2020 Foreign Currency Translation Cash Flow Hedges Pension and Other Postretirement Benefits Total Foreign Currency Translation Cash Flow Hedges Pension and Other Postretirement Benefits Total (Thousands of Dollars) Balance as of March 31 $ (41,405) $ (40,802) $ (12,329) $ (94,536) $ (50,600) $ (45,307) $ (8,302) $ (104,209) Other comprehensive income (loss): Other comprehensive income (loss) before reclassification adjustments 1,094 — — 1,094 2,638 (461) — 2,177 Net gain on pension costs reclassified into other income, net — — (187) (187) — — (305) (305) Net loss on cash flow hedges reclassified into interest expense, net — 1,335 — 1,335 — 878 — 878 Other — — 2 2 — — 4 4 Other comprehensive income (loss) 1,094 1,335 (185) 2,244 2,638 417 (301) 2,754 Balance as of June 30 $ (40,311) $ (39,467) $ (12,514) $ (92,292) $ (47,962) $ (44,890) $ (8,603) $ (101,455) Six Months Ended June 30, 2021 2020 Foreign Cash Flow Pension and Total Foreign Cash Flow Pension and Total (Thousands of Dollars) Balance as of January 1 $ (42,362) $ (42,150) $ (12,144) $ (96,656) $ (43,772) $ (16,124) $ (8,000) $ (67,896) Other comprehensive income (loss): Other comprehensive income (loss) before reclassification adjustments 2,051 — — 2,051 (4,190) (30,291) — (34,481) Net gain on pension costs reclassified into other income, net — — (374) (374) — — (610) (610) Net loss on cash flow hedges reclassified into interest expense, net — 2,683 — 2,683 — 1,525 — 1,525 Other — — 4 4 — — 7 7 Other comprehensive income (loss) 2,051 2,683 (370) 4,364 (4,190) (28,766) (603) (33,559) Balance as of June 30 $ (40,311) $ (39,467) $ (12,514) $ (92,292) $ (47,962) $ (44,890) $ (8,603) $ (101,455)
Preferred Limited Partner [Member]
Distribution Made to Preferred Limited Partner [Line Items]
Distributions Made to Limited Partner, by Distribution [Table Text Block]	Distributions on our Series A, B and C Preferred Units are payable out of any legally available funds, accrue and are cumulative from the original issuance dates, and are payable on the 15th day (or next business day) of each of March, June, September and December of each year to holders of record on the first business day of each payment month as follows (until the distribution rate changes to a floating rate): Units Fixed Distribution Rate Per Unit Per Quarter Fixed Distribution Date at Which Distribution (Thousands of Dollars) Series A Preferred Units $ 0.53125 $ 4,813 December 15, 2021 Series B Preferred Units $ 0.47657 $ 7,339 June 15, 2022 Series C Preferred Units $ 0.56250 $ 3,881 December 15, 2022
Common Limited Partner [Member]
Distribution Made to Preferred Limited Partner [Line Items]
Distributions Made to Limited Partner, by Distribution [Table Text Block]	The following table summarizes information about quarterly cash distributions declared for our common limited partners: Quarter Ended Cash Distributions Total Cash Record Date Payment Date (Thousands of Dollars) June 30, 2021 $ 0.40 $ 43,814 August 6, 2021 August 12, 2021 March 31, 2021 $ 0.40 $ 43,834 May 10, 2021 May 14, 2021 December 31, 2020 $ 0.40 $ 43,787 February 8, 2021 February 12, 2021

NET INCOME (LOSS) PER COMMON _2

NET INCOME (LOSS) PER COMMON UNIT (Tables)	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Schedule of Net Income (Loss) Per Common Unit	The following table details the calculation of net income (loss) per common unit: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (Thousands of Dollars, Except Unit and Per Unit Data) Net income (loss) $ 63,383 $ 29,766 $ 105,640 $ (117,875) Distributions to preferred limited partners (31,887) (30,684) (63,774) (61,107) Distributions to common limited partners (43,814) (43,678) (87,648) (87,408) Distribution equivalent rights to restricted units (586) (502) (1,184) (1,008) Distributions in excess of income (loss) $ (12,904) $ (45,098) $ (46,966) $ (267,398) Distributions to common limited partners $ 43,814 $ 43,678 $ 87,648 $ 87,408 Allocation of distributions in excess of income (loss) (12,904) (45,098) (46,966) (267,398) Series D Preferred Unit accretion (4,155) (5,064) (8,176) (9,966) Net income (loss) attributable to common units $ 26,755 $ (6,484) $ 32,506 $ (189,956) Basic and diluted weighted-average common units outstanding 109,529,658 109,194,722 109,518,004 109,046,061 Basic and diluted net income (loss) per common unit $ 0.25 $ (0.06) $ 0.30 $ (1.74)

SUPPLEMENTAL CASH FLOW INFORM_2

SUPPLEMENTAL CASH FLOW INFORMATION (Tables)	6 Months Ended
	Jun. 30, 2021
Supplemental Cash Flow Information [Abstract]
Schedule of Changes in Current Assets and Liabilities [Table Text Block]	Changes in current assets and current liabilities were as follows: Six Months Ended June 30, 2021 2020 (Thousands of Dollars) Decrease (increase) in current assets: Accounts receivable $ (9,942) $ 25,386 Inventories (1,744) 4,176 Other current assets (4,752) (8,781) Increase (decrease) in current liabilities: Accounts payable 3,588 (15,197) Accrued interest payable (11,686) (177) Accrued liabilities (17,222) (11,625) Taxes other than income tax (1,575) 44 Changes in current assets and current liabilities $ (43,333) $ (6,174)
Schedule of Supplemental Cash Flow Information [Table Text Block]	Cash flows related to interest and income taxes were as follows: Six Months Ended June 30, 2021 2020 (Thousands of Dollars) Cash paid for interest, net of amount capitalized $ 114,339 $ 103,034 Cash paid for income taxes, net of tax refunds received $ 5,882 $ 4,661
Schedule of Cash and Cash Equivalents [Table Text Block]	“Cash, cash equivalents and restricted cash” on the consolidated statements of cash flows was included in the consolidated balance sheets as follows: June 30, 2021 December 31, 2020 (Thousands of Dollars) Cash and cash equivalents $ 23,500 $ 153,625 Other long-term assets, net 8,802 8,801 Cash, cash equivalents and restricted cash $ 32,302 $ 162,426

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Results of operations for the reportable segments were as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (Thousands of Dollars) Revenues: Pipeline $ 192,906 $ 166,108 $ 362,134 $ 361,789 Storage 119,248 119,407 227,822 242,624 Fuels marketing 114,939 54,025 198,794 127,927 Consolidation and intersegment eliminations — — (11) (9) Total revenues $ 427,093 $ 339,540 $ 788,739 $ 732,331 Operating income (loss): Pipeline $ 96,512 $ 71,981 $ 175,891 $ (50,943) Storage 46,185 43,242 88,903 91,821 Fuels marketing 2,298 3,349 5,029 9,792 Total segment operating income 144,995 118,572 269,823 50,670 General and administrative expenses 27,477 23,700 51,969 46,671 Other depreciation and amortization expense 1,913 2,171 3,960 4,357 Total operating income (loss) $ 115,605 $ 92,701 $ 213,894 $ (358)
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	Total assets by reportable segment were as follows: June 30, 2021 December 31, 2020 (Thousands of Dollars) Pipeline $ 3,540,298 $ 3,609,508 Storage 1,918,515 1,897,167 Fuels marketing 43,537 31,967 Total segment assets 5,502,350 5,538,642 Other partnership assets 143,630 278,376 Total consolidated assets $ 5,645,980 $ 5,817,018

ORGANIZATION AND BASIS OF PRE_2

ORGANIZATION AND BASIS OF PRESENTATION Narrative 1 (Details)	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of business segments	3

ORGANIZATION AND BASIS OF PRE_3

ORGANIZATION AND BASIS OF PRESENTATION Narrative 2 - Senior Notes (Details) - Logistics Notes due 2021 $ in Thousands	Jan. 31, 2021USD ($)
Debt Instrument [Line Items]
Long-term debt	$ 300,000
Long-term debt, rate	6.75%

ORGANIZATION AND BASIS OF PRE_4

ORGANIZATION AND BASIS OF PRESENTATION Narrative 3 - Selby Fire (Details) - USD ($) $ in Thousands	Oct. 15, 2019	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Unusual or Infrequent Item, or Both [Line Items]
Impact of fire at Selby, CA terminal	our terminal facility in Selby, California experienced a fire that destroyed two storage tanks and temporarily shut down the terminal
Insurance proceeds received		$ 20,500	$ 25,000	$ 35,000
Business Interruption Insurance from Selby, California Fire [Member] | Operating Expense [Member]
Unusual or Infrequent Item, or Both [Line Items]
Insurance proceeds received		$ 4,000	$ 3,100

GOODWILL IMPAIRMENT Narrative (

GOODWILL IMPAIRMENT Narrative (Details) - USD ($) $ in Thousands	Oct. 01, 2020	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Goodwill [Line Items]
Goodwill impairment loss	$ 0	$ 0	$ 0		$ 0	$ 225,000
Goodwill		766,416			766,416		$ 766,416
Crude Oil Pipelines [Member] | Pipeline Segment
Goodwill [Line Items]
Goodwill impairment loss				$ 225,000
Reporting unit, percentage of fair value in excess of carrying amount	4.00%
Goodwill	$ 308,600	$ 308,600			$ 308,600

REVENUE FROM CONTRACTS WITH C_3

REVENUE FROM CONTRACTS WITH CUSTOMERS Table 1 - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Contract assets
Current portion	$ 2,590	$ 2,218	$ 2,694	$ 2,140
Noncurrent portion	629	1,212	932	1,003
Total	3,219	3,430	3,626	3,143
Additions	1,898	2,670
Transfer to accounts receivable	(2,055)	(2,258)
Transfer to revenues, contract assets	(250)	(125)
Total activity	(407)	287
Contract liabilities
Current portion	(17,002)	(20,235)	(22,019)	(21,083)
Noncurrent portion	(45,968)	(45,445)	(47,537)	(40,289)
Total	(62,970)	(65,680)	$ (69,556)	$ (61,372)
Additions	(19,401)	(34,156)
Transfer to revenues, contract liabilities	25,987	29,848
Total activity	$ 6,586	$ (4,308)

REVENUE FROM CONTRACTS WITH C_4

REVENUE FROM CONTRACTS WITH CUSTOMERS Table 2 - Expected Timing of Satisfaction of Performance Obligations (Details) $ in Thousands	Jun. 30, 2021USD ($)
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, amount	$ 1,421,323
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, amount	$ 245,634
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, amount	$ 399,345
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, amount	$ 280,095
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, amount	$ 189,149
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, amount	$ 130,697
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation, amount	$ 176,403
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period

REVENUE FROM CONTRACTS WITH C_5

REVENUE FROM CONTRACTS WITH CUSTOMERS Table 3 - Disaggregation of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Total revenues	$ 427,093	$ 339,540	$ 788,739	$ 732,331
Intersegment Eliminations [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	(11)	(9)
Pipeline Segment
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	192,906	165,283	362,134	360,139
Lessor revenues	0	825	0	1,650
Total revenues	192,906	166,108	362,134	361,789
Pipeline Segment | Crude Oil Pipelines [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	82,034	79,110	156,622	170,832
Pipeline Segment | Refined Products and Ammonia Pipelines [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	110,872	86,173	205,512	189,307
Storage Segment
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	108,885	109,079	207,095	221,968
Lessor revenues	10,363	10,328	20,727	20,656
Total revenues	119,248	119,407	227,822	242,624
Storage Segment | Throughput Terminal [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	35,143	32,199	59,937	70,922
Storage Segment | Storage Terminal [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	73,742	76,880	147,158	151,046
Fuels Marketing Segment
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	114,939	54,025	198,794	127,927
Total revenues	$ 114,939	$ 54,025	$ 198,794	$ 127,927

DEBT Narrative 1 - Revolving Cr

DEBT Narrative 1 - Revolving Credit Agreement (Details) - Revolving Credit Agreement [Member] $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,000,000
Long-term debt	185,000
Current remaining borrowing capacity	809,800
Letters of credit outstanding, amount	$ 5,200
Line of credit facility, interest rate description	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.
Line of credit facility, weighted-average interest rate	2.60%
Line of credit facility, covenant terms	For the rolling period of four quarters ended June 30, 2021, 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.

DEBT Narrative 2 - Senior Notes

DEBT Narrative 2 - Senior Notes (Details) - Logistics Notes due 2021 $ in Thousands	Jan. 31, 2021USD ($)
Debt Instrument [Line Items]
Long-term debt	$ 300,000
Long-term debt, rate	6.75%

DEBT - Narrative 3 - Term Loan

DEBT - Narrative 3 - Term Loan (Details) - Unsecured Term Loan Credit Agreement [Member] - USD ($) $ in Millions	Sep. 15, 2020	Apr. 21, 2020
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 750
The Term Loan, Initial Loan	$ 500	$ 500
Long-term debt, term		3 years

DEBT - Narrative 4 - Receivable

DEBT - Narrative 4 - Receivables Financing Agreement (Details) - Receivables Financing Agreement [Member] $ in Millions	Jun. 30, 2021USD ($)
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 100
Weighted average interest rate	2.30%
Debt instrument, collateral amount	$ 125.4
Long-term debt	$ 74.2

DEBT Table 1 - Fair Value of Lo

DEBT Table 1 - Fair Value of Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Fair value, long-term debt	$ 3,793,490	$ 3,799,378
Long-term debt, excluding finance leases	$ 3,443,530	$ 3,539,258

COMMITMENTS AND CONTINGENCIES N

COMMITMENTS AND CONTINGENCIES Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Loss contingency accrual, at carrying value	$ 0.1	$ 2.6

DERIVATIVES Narrative 1 (Detail

DERIVATIVES Narrative 1 (Details) - USD ($) $ in Millions	1 Months Ended	5 Months Ended
	Jun. 30, 2020	May 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Cash paid from termination of interest rate swaps	$ 49.2
Interest rate swaps | Cash Flow Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate swaps, interest rate received		received a rate based on the three-month USD LIBOR.
Notional amount of forward-starting interest rate swaps terminated		$ 250

DERIVATIVES Table - Impact of D

DERIVATIVES Table - Impact of Derivatives on Earnings (Details) - Interest rate swaps - Designated as Hedging Instruments - Cash Flow Hedges - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other comprehensive income
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in other comprehensive income (loss) on derivative	$ 0	$ (461)	$ 0	$ (30,291)
Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into interest expense, net	$ (1,335)	$ (878)	$ (2,683)	$ (1,525)

DERIVATIVES Narrative 2 (Detail

DERIVATIVES Narrative 2 (Details) $ in Millions	Jun. 30, 2021USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Loss to be reclassified during next 12 months	$ (4)

SERIES D CUMULATIVE CONVERTIB_2

SERIES D CUMULATIVE CONVERTIBLE PREFERRED UNITS Narrative (Details) - Series D Preferred Limited Partner [Member] - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
	Sep. 30, 2021	Jun. 30, 2021
Class of Stock [Line Items]
Required amount of per unit cash dividends to permit dividend paid in kind		$ 0.635
Preferred Stock, Distributions, Period - June 29, 2018 to June 28, 2020 [Member]
Class of Stock [Line Items]
Preferred units distribution percentage, per annum		9.75%
Preferred units, distribution rate, per annum		$ 57.6
Preferred stock, dividend amount, per unit, per distribution period		$ 0.619
Preferred Stock, Distributions, Period - June 29, 2020 to June 28, 2023 [Member]
Class of Stock [Line Items]
Preferred units distribution percentage, per annum		10.75%
Preferred units, distribution rate, per annum		$ 63.4
Preferred stock, dividend amount, per unit, per distribution period		$ 0.682
Preferred Stock, Distributions, Period - June 29, 2023 and thereafter [Member]
Class of Stock [Line Items]
Preferred units, dividend payment rate, variable		the greater of 13.75%, or $81.1 million, per annum ($0.872 per unit per distribution period) or the distribution per common unit thereafter
Preferred Stock, Distributions, Period - June 29, 2023 and thereafter [Member] | Minimum [Member]
Class of Stock [Line Items]
Preferred units distribution percentage, per annum		13.75%
Preferred units, distribution rate, per annum		$ 81.1
Preferred stock, dividend amount, per unit, per distribution period		$ 0.872
Subsequent Event [Member]
Class of Stock [Line Items]
Preferred unit distribution	$ 0.682

PARTNERS' EQUITY Table 1 - Cash

PARTNERS' EQUITY Table 1 - Cash Distributions - Preferred Units (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021
Series A Preferred Limited Partner [Member]
Distribution Made to Preferred Limited Partner [Line Items]
Preferred units distribution percentage, per annum		8.50%
Preferred unit distribution	$ 0.53125
Fixed distribution per quarter	$ 4,813
Series B Preferred Limited Partner [Member]
Distribution Made to Preferred Limited Partner [Line Items]
Preferred units distribution percentage, per annum		7.625%
Preferred unit distribution	$ 0.47657
Fixed distribution per quarter	$ 7,339
Series C Preferred Limited Partner [Member]
Distribution Made to Preferred Limited Partner [Line Items]
Preferred units distribution percentage, per annum		9.00%
Preferred unit distribution	$ 0.56250
Fixed distribution per quarter	$ 3,881

PARTNERS' EQUITY Narrative (Det

PARTNERS' EQUITY Narrative (Details)	6 Months Ended
	Jun. 30, 2021
Partners' Capital Notes [Abstract]
Percent of available cash distributed	100.00%
Number of days within which distribution is paid to common unitholders	45

PARTNERS' EQUITY Table 2 - Cash

PARTNERS' EQUITY Table 2 - Cash Distributions Declared - Common Limited Partners (Details) - Common Limited Partner [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Distribution Made to Common Limited Partners [Line Items]
Cash distributions per unit	$ 0.40	$ 0.40	$ 0.40
Cash distributions applicable to common unitholders	$ 43,814	$ 43,834	$ 43,787
Distribution date of record	Aug. 6, 2021	May 10, 2021	Feb. 8, 2021
Distribution payment date	Aug. 12, 2021	May 14, 2021	Feb. 12, 2021

PARTNERS' EQUITY Table 3 - Bala

PARTNERS' EQUITY Table 3 - Balance of and Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$ (96,656)
Ending balance	$ (92,292)		(92,292)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(41,405)	$ (50,600)	(42,362)	$ (43,772)
Other comprehensive income (loss) before reclassification adjustments	1,094	2,638	2,051	(4,190)
Other	0	0	0	0
Other comprehensive income (loss)	1,094	2,638	2,051	(4,190)
Ending balance	(40,311)	(47,962)	(40,311)	(47,962)
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(40,802)	(45,307)	(42,150)	(16,124)
Other comprehensive income (loss) before reclassification adjustments	0	(461)	0	(30,291)
Other	0	0	0	0
Other comprehensive income (loss)	1,335	417	2,683	(28,766)
Ending balance	(39,467)	(44,890)	(39,467)	(44,890)
Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(12,329)	(8,302)	(12,144)	(8,000)
Other comprehensive income (loss) before reclassification adjustments	0	0	0	0
Other	2	4	4	7
Other comprehensive income (loss)	(185)	(301)	(370)	(603)
Ending balance	(12,514)	(8,603)	(12,514)	(8,603)
Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(94,536)	(104,209)	(96,656)	(67,896)
Other comprehensive income (loss) before reclassification adjustments	1,094	2,177	2,051	(34,481)
Other	2	4	4	7
Other comprehensive income (loss)	2,244	2,754	4,364	(33,559)
Ending balance	(92,292)	(101,455)	(92,292)	(101,455)
Other income, net | Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net (gain) loss reclassified from AOCI	0	0	0	0
Other income, net | Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net (gain) loss reclassified from AOCI	0	0	0	0
Other income, net | Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net (gain) loss reclassified from AOCI	(187)	(305)	(374)	(610)
Other income, net | Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net (gain) loss reclassified from AOCI	(187)	(305)	(374)	(610)
Interest expense, net | Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net (gain) loss reclassified from AOCI	0	0	0	0
Interest expense, net | Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net (gain) loss reclassified from AOCI	1,335	878	2,683	1,525
Interest expense, net | Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net (gain) loss reclassified from AOCI	0	0	0	0
Interest expense, net | Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net (gain) loss reclassified from AOCI	$ 1,335	$ 878	$ 2,683	$ 1,525

NET INCOME (LOSS) PER COMMON _3

NET INCOME (LOSS) PER COMMON UNIT Narrative (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Diluted weighted-average common units outstanding	109,529,658	109,194,722	109,518,004	109,046,061
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Diluted weighted-average common units outstanding	0	0	0	0

NET INCOME (LOSS) PER COMMON _4

NET INCOME (LOSS) PER COMMON UNIT Table - Net Income (Loss) per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Net income (loss)	$ 63,383	$ 29,766	$ 105,640	$ (117,875)
Distributions to preferred limited partners	(31,887)	(30,684)	(63,774)	(61,107)
Distributions to common limited partners	(43,814)	(43,678)	(87,648)	(87,408)
Distribution equivalent rights to restricted units	(586)	(502)	(1,184)	(1,008)
Distributions in excess of income (loss)	(12,904)	(45,098)	(46,966)	(267,398)
Distributions to common limited partners	43,814	43,678	87,648	87,408
Allocation of distributions in excess of income (loss)	(12,904)	(45,098)	(46,966)	(267,398)
Series D Preferred Unit accretion	(4,155)	(5,064)	(8,176)	(9,966)
Net income (loss) attributable to common units	$ 26,755	$ (6,484)	$ 32,506	$ (189,956)
Basic weighted-average common units outstanding	109,529,658	109,194,722	109,518,004	109,046,061
Diluted weighted-average common units outstanding	109,529,658	109,194,722	109,518,004	109,046,061
Basic net income (loss) per common unit	$ 0.25	$ (0.06)	$ 0.30	$ (1.74)
Diluted net income (loss) per common unit	$ 0.25	$ (0.06)	$ 0.30	$ (1.74)

SUPPLEMENTAL CASH FLOW INFORM_3

SUPPLEMENTAL CASH FLOW INFORMATION - Table 1 - Changes in Current Assets and Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Supplemental Cash Flow Information [Abstract]
Decrease (increase) in accounts receivable	$ (9,942)	$ 25,386
Decrease (increase) in inventories	(1,744)	4,176
Decrease (increase) in other currrent assets	(4,752)	(8,781)
Increase (decrease) in accounts payable	3,588	(15,197)
Increase (decrease) in accrued interest payable	(11,686)	(177)
Increase (decrease) in accrued liabilities	(17,222)	(11,625)
Increase (decrease) in taxes other than income tax	(1,575)	44
Changes in current assets and current liabilities	$ (43,333)	$ (6,174)

SUPPLEMENTAL CASH FLOW INFORM_4

SUPPLEMENTAL CASH FLOW INFORMATION - Table 2 - Cash Flows Related to Interest and Income Taxes (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Supplemental Cash Flow Information [Abstract]
Cash paid for interest, net of amount capitalized	$ 114,339	$ 103,034
Cash paid for income taxes, net of tax refunds received	$ 5,882	$ 4,661

SUPPLEMENTAL CASH FLOW INFORM_5

SUPPLEMENTAL CASH FLOW INFORMATION - Table 3 - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 23,500	$ 153,625
Cash, cash equivalents and restricted cash	32,302	162,426	$ 26,077	$ 24,980
Cash and cash equivalents [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	23,500	153,625
Other long-term assets, net [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents and restricted cash	$ 8,802	$ 8,801

SEGMENT INFORMATION Table 1 - R

SEGMENT INFORMATION Table 1 - Results of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues:
Total revenues	$ 427,093	$ 339,540	$ 788,739	$ 732,331
Operating income (loss):
General and administrative expenses	27,477	23,700	51,969	46,671
Other depreciation and amortization expense	1,913	2,171	3,960	4,357
Operating income (loss)	115,605	92,701	213,894	(358)
Pipeline Segment
Revenues:
Total revenues	192,906	166,108	362,134	361,789
Storage Segment
Revenues:
Total revenues	119,248	119,407	227,822	242,624
Fuels Marketing Segment
Revenues:
Total revenues	114,939	54,025	198,794	127,927
Total segment
Operating income (loss):
Operating income (loss)	144,995	118,572	269,823	50,670
Total segment | Pipeline Segment
Operating income (loss):
Operating income (loss)	96,512	71,981	175,891	(50,943)
Total segment | Storage Segment
Operating income (loss):
Operating income (loss)	46,185	43,242	88,903	91,821
Total segment | Fuels Marketing Segment
Operating income (loss):
Operating income (loss)	2,298	3,349	5,029	9,792
Intersegment Eliminations [Member]
Revenues:
Total revenues	$ 0	$ 0	$ (11)	$ (9)

SEGMENT INFORMATION Table 2 - A

SEGMENT INFORMATION Table 2 - Assets by Reportable Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Segment Information
Total assets	$ 5,645,980	$ 5,817,018
Total segment assets
Segment Information
Total assets	5,502,350	5,538,642
Total segment assets | Pipeline Segment
Segment Information
Total assets	3,540,298	3,609,508
Total segment assets | Storage Segment
Segment Information
Total assets	1,918,515	1,897,167
Total segment assets | Fuels Marketing Segment
Segment Information
Total assets	43,537	31,967
Other partnership assets
Segment Information
Total assets	$ 143,630	$ 278,376

SUBSEQUENT EVENT Narrative (Det

SUBSEQUENT EVENT Narrative (Details) - Forecast [Member] $ in Thousands, bbl in Millions	Aug. 01, 2021USD ($)bbl
Subsequent Event [Line Items]
Description of assets to be sold	storage facilities at eight locations, including all our North East Terminals and our one terminal in Florida
Proceeds from expected sale of business	$ 250,000
Minimum [Member]
Subsequent Event [Line Items]
Loss on expected sale of business	(130,000)
Maximum [Member]
Subsequent Event [Line Items]
Loss on expected sale of business	$ (140,000)
Storage Segment
Subsequent Event [Line Items]
Storage capacity of terminals expected to be sold | bbl	14.8