NuStar Energy (NS) 10-Q 8 Aug 17 2017 Q2 Quarterly report Financial data

DEI Document

DEI Document - shares	6 Months Ended
	Jun. 30, 2017	Jul. 31, 2017
Document Information [Abstract]
Entity Registrant Name	NuStar Energy L.P.
Entity Central Index Key	1,110,805
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Trading Symbol	ns
Amendment Flag	false
Entity Partnership Units Outstanding		93,031,036

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 29,191	$ 35,942
Accounts receivable, net of allowance for doubtful accounts of $7,768 and $7,756 as of June 30, 2017 and December 31, 2016, respectively	147,548	170,293
Receivable from related party	86	317
Inventories	25,772	37,945
Other current assets	28,265	132,686
Total current assets	230,862	377,183
Property, plant and equipment, at cost	5,974,427	5,435,278
Accumulated depreciation and amortization	(1,827,094)	(1,712,995)
Property, plant and equipment, net	4,147,333	3,722,283
Intangible assets, net	857,616	127,083
Goodwill	1,023,359	696,637
Deferred income tax asset	1,359	2,051
Other long-term assets, net	98,795	105,308
Total assets	6,359,324	5,030,545
Current liabilities:
Accounts payable	92,668	118,686
Short-term debt	45,000	54,000
Current portion of long-term debt	403,075	0
Accrued interest payable	40,232	34,030
Accrued liabilities	55,986	60,485
Taxes other than income tax	16,709	15,685
Income tax payable	847	6,510
Total current liabilities	654,517	289,396
Long-term debt	3,073,864	3,014,364
Deferred income tax liability	22,863	22,204
Other long-term liabilities	107,031	92,964
Commitments and contingencies (Note 5)
Partners' equity:
Common limited partners (93,030,988 and 78,616,228 common units outstanding as of June 30, 2017 and December 31, 2016, respectively)	1,958,435	1,455,642
General partner	41,944	31,752
Accumulated other comprehensive loss	(89,283)	(94,177)
Total partners’ equity	2,501,049	1,611,617
Total liabilities and partners' equity	6,359,324	5,030,545
Series A Preferred Limited Partner [Member]
Partners' equity:
Preferred limited partners	218,340	218,400
Series B Preferred Limited Partner [Member]
Partners' equity:
Preferred limited partners	$ 371,613	$ 0

CONSOLIDATED BALANCE SHEETS Non

CONSOLIDATED BALANCE SHEETS Non-Printing - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Allowance for doubtful accounts	$ 7,768	$ 7,756
Series A Preferred Units outstanding (in units)	9,060,000	9,060,000
Series B Preferred Units outstanding (in units)	15,400,000	0
Limited partners common units outstanding (in units)	93,030,988	78,616,228

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Service revenues	$ 283,700	$ 270,403	$ 550,162	$ 536,969
Product sales	151,788	167,401	372,756	306,538
Total revenues	435,488	437,804	922,918	843,507
Costs and expenses:
Cost of product sales	144,479	157,617	352,285	286,607
Operating expenses:
Third parties	116,400	112,662	217,426	196,202
Related party	0	0	0	21,681
Total operating expenses	116,400	112,662	217,426	217,883
General and administrative expenses:
Third parties	33,604	22,657	58,199	35,949
Related party	0	0	0	10,493
Total general and administrative expenses	33,604	22,657	58,199	46,442
Depreciation and amortization expense	67,601	53,651	124,465	106,793
Total costs and expenses	362,084	346,587	752,375	657,725
Operating income	73,404	91,217	170,543	185,782
Interest expense, net	(45,612)	(34,229)	(82,026)	(68,352)
Other income (expense), net	88	(201)	228	(372)
Income before income tax expense	27,880	56,787	88,745	117,058
Income tax expense	1,630	4,270	4,555	7,140
Net income	$ 26,250	$ 52,517	$ 84,190	$ 109,918
Basic net income per common unit (Note 11)	$ 0.05	$ 0.52	$ 0.51	$ 1.09
Diluted net income per common unit (Note 11)	$ 0.05	$ 0.52	$ 0.51	$ 1.09
Basic weighted-average common units outstanding	90,345,469	77,886,219	84,526,506	77,886,148
Diluted weighted-average common units outstanding	90,345,469	77,939,279	84,526,506	77,943,702
Comprehensive income	$ 27,381	$ 29,178	$ 89,084	$ 71,801

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash Flows from Operating Activities:
Net income	$ 84,190	$ 109,918
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	124,465	106,793
Unit-based compensation expense	5,117	2,869
Amortization of debt related items	3,146	3,965
Gain from sale or disposition of assets	(36)	(2)
Deferred income tax expense	23	2,562
Changes in current assets and current liabilities (Note 12)	(15,344)	(15,274)
Other, net	7,427	4,202
Net cash provided by operating activities	208,988	215,033
Cash Flows from Investing Activities:
Capital expenditures	(108,849)	(95,361)
Change in accounts payable related to capital expenditures	6,851	(12,674)
Proceeds from sale or disposition of assets	1,966	0
Proceeds from Axeon term loan	110,000	0
Acquisitions	(1,476,719)	0
Net cash provided by (used in) investing activities	(1,466,751)	(108,035)
Cash Flows from Financing Activities:
Proceeds from long-term debt borrowings	1,037,161	348,904
Proceeds from short-term debt borrowings	565,000	279,000
Proceeds from note offering, net of issuance costs	543,313	0
Long-term debt repayments	(1,122,239)	(184,192)
Short-term debt repayments	(574,000)	(363,000)
Proceeds from issuance of preferred units, net of issuance costs	371,802	0
Proceeds from issuance of common units, net of issuance costs	643,858	0
Contributions from general partner	13,597	0
Distributions to preferred unitholders	(10,696)	0
Distributions to common unitholders and general partner	(216,139)	(196,102)
Increase (decrease) in cash book overdrafts	1,321	(11,166)
Other, net	(2,615)	(674)
Net cash provided by (used in) financing activities	1,250,363	(127,230)
Effect of foreign exchange rate changes on cash	649	4,389
Net increase (decrease) in cash and cash equivalents	(6,751)	(15,843)
Cash and cash equivalents as of the beginning of the period	35,942	118,862
Cash and cash equivalents as of the end of the period	$ 29,191	$ 103,019

ORGANIZATION AND BASIS OF PRESE

ORGANIZATION AND BASIS OF PRESENTATION	6 Months Ended
	Jun. 30, 2017
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 publicly held Delaware limited partnership engaged in the transportation of petroleum products and anhydrous ammonia, and the terminalling, storage and marketing of petroleum products. 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. NuStar GP Holdings, LLC (NuStar GP Holdings or NSH) (NYSE: NSH) owns our general partner, Riverwalk Logistics, L.P., and owns an approximate 11% common limited partner interest in us as of June 30, 2017 . 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 Navigator Acquisition and Financing Transactions. On May 4, 2017 , we completed the acquisition of Navigator Energy Services, LLC for approximately $1.5 billion (the Navigator Acquisition), subject to customary adjustments at and following closing. In order to fund the purchase price, we issued 14,375,000 common units for net proceeds of $657.5 million , issued $550.0 million of 5.625% senior notes for net proceeds of $543.3 million and issued 15,400,000 of our 7.625% Series B Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units (Series B Preferred Units) for net proceeds of $371.8 million . Please refer to Notes 3, 4 and 10 for further discussion. Axeon Term Loan. On February 22, 2017, we settled and terminated the $190.0 million term loan to Axeon Specialty Products, LLC (the Axeon Term Loan), pursuant to which we also provided credit support, such as guarantees, letters of credit and cash collateral, as applicable, of up to $125.0 million to Axeon Specialty Products, LLC (Axeon). We received $110.0 million in settlement of the Axeon Term Loan, and our obligation to provide ongoing credit support to Axeon ceased. Please refer to Note 6 for further discussion of the Axeon Term Loan and credit support. 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. Financial information for the three and six months ended June 30, 2017 and 2016 included in these Condensed Notes to Consolidated Financial Statements is derived from our unaudited condensed consolidated financial statements. Operating results for the three and six months ended June 30, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017 . The consolidated balance sheet as of December 31, 2016 has been derived from the audited consolidated financial statements as of that date. 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, 2016 .

NEW ACCOUNTING PRONOUNCEMENTS

NEW ACCOUNTING PRONOUNCEMENTS	6 Months Ended
	Jun. 30, 2017
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
NEW ACCOUNTING PRONOUNCEMENTS	NEW ACCOUNTING PRONOUNCEMENTS Unit-Based Payments In May 2017, the Financial Accounting Standards Board (FASB) issued amended guidance that clarifies when a change to the terms and conditions of a unit-based payment award is accounted for as a modification. Under the amended guidance, an entity will apply modification accounting if the value, vesting or classification of the unit-based payment award changes. The guidance is effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied prospectively. We will adopt these provisions January 1, 2018, and we do not expect the guidance to have a material impact on our financial position, results of operations or disclosures. Defined Benefit Plans In March 2017, the FASB issued amended guidance that changes the presentation of net periodic pension cost related to defined benefit plans. Under the amended guidance, the service cost component of net periodic benefit cost will be presented in the same income statement line items as other current employee compensation costs, but the remaining components of net periodic benefit cost will be presented outside of operating income. The changes are effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied retrospectively. We will adopt these provisions January 1, 2018, and we do not expect the guidance to have a material impact on our financial position, results of operations or disclosures. Goodwill In January 2017, the FASB issued amended guidance that simplifies the accounting for goodwill impairment by eliminating step 2 of the goodwill impairment test. Under the amended guidance, goodwill impairment will be measured as the excess of the reporting unit’s carrying value over its fair value, not to exceed the carrying amount of goodwill for that reporting unit. The changes are effective for annual and interim periods beginning after December 15, 2019, and amendments should be applied prospectively. Early adoption is permitted for any impairment tests performed after January 1, 2017, and we are currently evaluating whether we will adopt these provisions early. Regardless of our decision, we do not expect the guidance to have a material impact on our financial position, results of operations or disclosures. Definition of a Business In January 2017, the FASB issued amended guidance that clarifies the definition of a business used in evaluating whether a set of transferred assets and activities constitutes a business. Under the amended guidance, if substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, the set of transferred assets and activities would not represent a business. To be considered a business, the set of assets transferred is also required to include at least one substantive process that together significantly contribute to the ability to create outputs. In addition, the amended guidance narrows the definition of outputs to be consistent with how outputs are described in the new revenue recognition standard. The changes are effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied prospectively. We are currently evaluating whether we will early adopt these provisions. We do not expect the guidance to have a material impact on our financial position, results of operations or disclosures. Statement of Cash Flows In August 2016, the FASB issued amended guidance that clarifies how entities should present certain cash receipts and cash payments on the statement of cash flows, including but not limited to debt prepayment or debt extinguishment costs, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims and distributions received from equity method investees. The changes are effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied retrospectively. We will adopt these provisions January 1, 2018, and we do not expect the guidance to have a material impact on our statements of cash flows or disclosures. Credit Losses In June 2016, the FASB issued amended guidance that requires the use of a “current expected loss” model for financial assets measured at amortized cost and certain off-balance sheet credit exposures. Under this model, entities will be required to estimate the lifetime expected credit losses on such instruments based on historical experience, current conditions, and reasonable and supportable forecasts. This amended guidance also expands the disclosure requirements to enable users of financial statements to understand an entity’s assumptions, models and methods for estimating expected credit losses. The changes are effective for annual and interim periods beginning after December 15, 2019, and amendments should be applied using a modified retrospective approach. We currently expect to adopt the amended guidance on January 1, 2020 and are assessing the impact of this amended guidance on our financial position, results of operations and disclosures. We plan to provide additional information about the expected financial impact at a future date. Leases In February 2016, the FASB issued amended guidance that requires lessees to recognize the assets and liabilities that arise from most leases on the balance sheet. For lessors, this amended guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. The changes are effective for annual and interim periods beginning after December 15, 2018, and amendments should be applied using a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements, with the option to use certain expedients. We currently expect to adopt these provisions on January 1, 2019. We have initiated a project to assess the impact of this amended guidance on our financial position, results of operations, disclosures and internal controls and plan to provide additional information about the expected financial impact at a future date. Financial Instruments In January 2016, the FASB issued new guidance that addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. The changes are effective for annual and interim periods beginning after December 15, 2017, and amendments should be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. We will adopt these provisions January 1, 2018, and we do not expect the guidance to have a material impact on our financial position, results of operations or disclosures. Revenue Recognition In May 2014, the FASB and the International Accounting Standards Board jointly issued a comprehensive new revenue recognition standard. In August 2015, the FASB deferred the effective date by one year. The standard is now effective for public entities for annual and interim periods beginning after December 15, 2017, using one of two retrospective transition methods. Early adoption is permitted, but not before the original effective date. The FASB has subsequently issued several updates that amend and/or clarify the new revenue recognition standard. We expect to complete implementation of the new revenue recognition standard by the end of 2017. Based on our analysis completed to date, we do not believe the standard will significantly impact the amount or timing of revenues recognized under the vast majority of our revenue contracts. We currently expect to adopt the new guidance using the modified retrospective approach, under which the cumulative effect of initially applying the new guidance is recognized as an adjustment to the opening balance of retained earnings, in the first quarter of 2018. We are continuing to evaluate the impact of this new guidance on our financial position, results of operations and disclosures, including customer contracts associated with our recently closed Navigator Acquisition.

ACQUISITIONS

ACQUISITIONS	6 Months Ended
	Jun. 30, 2017
Business Combinations [Abstract]
ACQUISITIONS	ACQUISITIONS Navigator Acquisition On April 11, 2017, we entered into a Membership Interest Purchase and Sale Agreement (the Acquisition Agreement) with FR Navigator Holdings LLC to acquire all of the issued and outstanding limited liability company interests in Navigator Energy Services, LLC (Navigator) for approximately $1.5 billion , subject to customary adjustments at and following closing. We closed on the Navigator Acquisition on May 4, 2017 and funded the purchase price with the net proceeds of the equity and debt issuances described in Notes 4 and 10. We acquired crude oil transportation, pipeline gathering and storage assets located in the Midland Basin of West Texas consisting of: (i) more than 500 miles of crude oil gathering and transportation pipelines with approximately 92,000 barrels per day ship-or-pay volume commitments and deliverability of approximately 412,000 barrels per day; (ii) a pipeline gathering system with more than 200 connected producer tank batteries capable of more than 400,000 barrels per day of pumping capacity covering over 500,000 dedicated acres with fixed fee contracts; and (iii) approximately 1.0 million barrels of crude oil storage capacity with 440,000 barrels contracted to third parties. We collectively refer to the acquired assets as our Permian Crude System. The assets acquired are included in our pipeline segment. The Navigator Acquisition broadens our geographic footprint by marking our entry into the Permian Basin and complements our existing asset base. We believe the Permian Crude System will provide a strong growth platform that, when coupled with our assets in the Eagle Ford region, serve to solidify our presence in two of the most prolific basins in the United States. We accounted for the Navigator Acquisition using the acquisition method. The estimates of fair value of the assets acquired and liabilities assumed are based on preliminary assumptions, pending the completion of an independent appraisal and other evaluations as information becomes available to us. The following table reflects the preliminary purchase price allocation: Preliminary Purchase Price Allocation (Thousands of Dollars) Accounts receivable $ 4,916 Other current assets 2,476 Property, plant and equipment, net 396,603 Intangible assets (a) 750,000 Goodwill (b) 326,722 Other long-term assets, net 2,125 Current liabilities (26,971 ) Preliminary purchase price allocation, net of cash acquired 1,455,871 Pending closing adjustment 20,848 Cash disbursed at closing $ 1,476,719 (a) Intangible assets, which consist of customer contracts and relationships, are expected to be amortized over a weighted average period of 20 years . (b) The goodwill acquired represents the expected benefit from entering new geographic areas and the anticipated opportunities to generate future cash flows from the assets acquired and potential future projects. The values used in the purchase price allocation above and estimated useful lives are preliminary and subject to change after we finalize our review of the specific types, nature and condition of Navigator’s property, plant and equipment and intangible assets and pending the completion of an independent appraisal. A change in the value used for property, plant and equipment or intangible assets may be significant and would cause a corresponding increase or decrease in goodwill. The condensed statements of income include the results of operations for the Navigator commencing on May 4, 2017. For the three months ended June 30, 2017, we recognized $9.5 million in revenues and an operating loss of $3.4 million related to the Navigator Acquisition. Additionally, we incurred transaction costs of $10.2 million included in “General and administrative expenses” and $3.7 million included in “Interest expense, net” on the condensed consolidated statements of comprehensive income for the three months ended June 30, 2017. The unaudited pro forma information for the three and six months ended June 30, 2017 and 2016 presented below combines the historical financial information for Navigator and the Partnership for those periods. The information assumes we completed the Navigator Acquisition on January 1, 2016 and the following: • we issued approximately 14.4 million common units; • we received a contribution from our general partner of $13.6 million to maintain its 2% interest; • we issued 15.4 million Series B Preferred Units; • we issued $550.0 million of 5.625% senior notes; • additional depreciation and amortization that would have been incurred assuming the fair value adjustments to property, plant and equipment and intangible assets reflected in the preliminary purchase price allocation above have been applied; and • we satisfied Navigator’s outstanding obligations under its revolving credit agreement. Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (Thousands of Dollars, Except Per Unit Data) Revenues $ 439,933 $ 443,314 $ 937,317 $ 852,169 Net income $ 21,211 $ 33,378 $ 63,659 $ 70,118 Basic and diluted net (loss) income per common unit $ (0.03 ) $ 0.15 $ 0.16 $ 0.34 The pro forma information for the three and six months ended June 30, 2017 includes transaction costs of approximately $14.0 million , which were directly attributable to the Navigator Acquisition. The pro forma information is unaudited and is not necessarily indicative of the results of operations that actually would have resulted had the Navigator Acquisition occurred on January 1, 2016 or that may result in the future.

DEBT

DEBT	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
DEBT	DEBT Issuance of 5.625% Senior Notes On April 28, 2017 , NuStar Logistics issued $550.0 million of 5.625% senior notes due April 28, 2027 . We used the net proceeds of $543.3 million from the offering to fund a portion of the purchase price for the Navigator Acquisition and to pay related fees and expenses. The interest on the 5.625% senior notes is payable semi-annually in arrears on April 28 and October 28 of each year beginning on October 28, 2017. The 5.625% senior notes do not have sinking fund requirements. These notes rank equally with existing senior unsecured indebtedness and senior to existing subordinated indebtedness of NuStar Logistics. The 5.625% senior notes contain restrictions on NuStar Logistics’ ability to incur secured indebtedness unless the same security is also provided for the benefit of holders of the senior notes. In addition, the senior notes limit NuStar Logistics’ ability to incur indebtedness secured by certain liens, engage in certain sale-leaseback transactions and engage in certain consolidations, mergers or asset sales. The 5.625% senior notes are fully and unconditionally guaranteed by NuStar Energy and NuPOP. At the option of NuStar Logistics, the 5.625% senior notes may be redeemed in whole or in part at any time at a redemption price, plus accrued and unpaid interest to the redemption date. If we undergo a change of control, followed by a ratings decline within 60 days of a change of control, each holder of the 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, plus any accrued and unpaid interest to the date of repurchase. Revolving Credit Agreement During the six months ended June 30, 2017 , the balance under our $1.5 billion five -year revolving credit agreement (the Revolving Credit Agreement) decreased by $74.2 million . The Revolving Credit Agreement matures on October 29, 2019 and bears interest, at our option, based on an alternative base rate, a LIBOR-based rate or a EURIBOR-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, 2017 , our weighted-average interest rate related to borrowings under the Revolving Credit Agreement was 2.8% , and we had $764.8 million outstanding. As of June 30, 2017 , our consolidated debt coverage ratio (as defined in the Revolving Credit Agreement) could not exceed 5.50-to-1.00 as a result of the Navigator Acquisition. The requirement not to exceed a maximum consolidated debt coverage ratio may limit the amount we can borrow under the Revolving Credit Agreement to an amount less than the total amount available for borrowing. As of June 30, 2017 , letters of credit issued under the Revolving Credit Agreement totaled $7.7 million , and we had $727.5 million available for borrowing. We believe that we are in compliance with the covenants in the Revolving Credit Agreement as of June 30, 2017 . Gulf Opportunity Zone Revenue Bonds In 2008, 2010 and 2011, the Parish of St. James, Louisiana issued, pursuant to the Gulf Opportunity Zone Act of 2005, an aggregate $365.4 million of tax-exempt revenue bonds (the GoZone Bonds) associated with our St. James, Louisiana terminal expansions. The GoZone Bonds bear interest based on a weekly tax-exempt bond market interest rate, and interest is paid monthly. The weighted-average interest rate was 0.9% as of June 30, 2017 . Following the issuances, the proceeds were deposited with a trustee and are disbursed to us upon our request for reimbursement of expenditures related to our St. James terminal expansions. We include the amount remaining in trust in “Other long-term assets, net,” and we include the amount of bonds issued in “Long-term debt” on the consolidated balance sheets. For the six months ended June 30, 2017 , we did not receive any proceeds from the trustee, and as of June 30, 2017 , the amount remaining in trust totaled $42.4 million . Receivables Financing Agreement NuStar Energy and NuStar Finance LLC (NuStar Finance), a special purpose entity and wholly owned subsidiary of NuStar Energy, are parties to a $125.0 million receivables financing agreement with third-party lenders (the Receivables Financing Agreement) and agreements with certain of NuStar Energy’s wholly owned subsidiaries (collectively with the Receivables Financing Agreement, the Securitization Program). NuStar Finance’s sole business consists of purchasing receivables from certain of NuStar Energy’s wholly owned subsidiaries and providing these receivables as collateral 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 either the applicable commercial paper rate or the applicable bank rate, each as defined under the Receivables Financing Agreement. The Securitization Program has an initial termination date of June 15, 2018, with the option to renew for additional 364-day periods thereafter. As of June 30, 2017 , $81.7 million of our accounts receivable are included in the Securitization Program. The amount of borrowings outstanding under the Receivables Financing Agreement totaled $53.3 million as of June 30, 2017 , which is included in “Current portion of long-term debt” on the consolidated balance sheet.

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	6 Months Ended
	Jun. 30, 2017
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 had an accrual of $1.7 million for contingent losses as of June 30, 2017 and none as of December 31, 2016 . The amount that will ultimately be paid may differ from the recorded accruals, and the timing of such payments is uncertain. In addition, due to the inherent uncertainty of litigation, there can be no assurance that the resolution of any particular claim or proceeding would not have a material adverse effect on our results of operations, financial position or liquidity.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS We segregate the inputs used in measuring fair value into three levels: Level 1, defined as observable inputs, such as quoted prices for identical assets or liabilities in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable, such as quoted prices for similar assets or liabilities in active markets or quoted prices for identical assets or liabilities in markets that are not active; and Level 3, defined as unobservable inputs for which little or no market data exists. We consider counterparty credit risk and our own credit risk in the determination of all estimated fair values. Recurring Fair Value Measurements The following assets and liabilities are measured at fair value on a recurring basis: June 30, 2017 Level 1 Level 2 Level 3 Total (Thousands of Dollars) Assets: Other current assets: Product imbalances $ 5,249 $ — $ — $ 5,249 Total $ 5,249 $ — $ — $ 5,249 Liabilities: Accrued liabilities: Product imbalances $ (3,031 ) $ — $ — $ (3,031 ) Commodity derivatives (451 ) — — (451 ) Interest rate swaps — (6,392 ) — (6,392 ) Other long-term liabilities: Interest rate swaps — (2,867 ) — (2,867 ) Total $ (3,482 ) $ (9,259 ) $ — $ (12,741 ) December 31, 2016 Level 1 Level 2 Level 3 Total (Thousands of Dollars) Assets: Other current assets: Product imbalances $ 1,551 $ — $ — $ 1,551 Commodity derivatives — 155 — 155 Other long-term assets, net: Interest rate swaps — 1,314 — 1,314 Total $ 1,551 $ 1,469 $ — $ 3,020 Liabilities: Accrued liabilities: Product imbalances $ (1,577 ) $ — $ — $ (1,577 ) Commodity derivatives (4,887 ) (165 ) — (5,052 ) Other long-term liabilities: Guarantee liability — — (1,230 ) (1,230 ) Interest rate swaps — (2,632 ) — (2,632 ) Total $ (6,464 ) $ (2,797 ) $ (1,230 ) $ (10,491 ) Product Imbalances. Since we value our assets and liabilities related to product imbalances using quoted market prices in active markets as of the reporting date, we include these product imbalances in Level 1 of the fair value hierarchy. Commodity Derivatives. We base the fair value of certain of our commodity derivative instruments on quoted prices on an exchange; accordingly, we include these items in Level 1 of the fair value hierarchy. We also have derivative instruments for which we determine fair value using industry pricing services and other observable inputs, such as quoted prices on an exchange for similar derivative instruments, and we include these derivative instruments in Level 2 of the fair value hierarchy. See Note 7 for a discussion of our derivative instruments. Interest Rate Swaps. Because we estimate the fair value of our forward-starting interest rate swaps using discounted cash flows, which use observable inputs such as time to maturity and market interest rates, we include these interest rate swaps in Level 2 of the fair value hierarchy. Guarantees. In 2014, we sold our remaining 50% ownership interest in Axeon and agreed to provide them with credit support, such as guarantees, letters of credit and cash collateral, as applicable, of up to $125.0 million . As of December 31, 2016 , we provided guarantees totaling $54.1 million , and one guarantee that did not specify a maximum amount. Our estimate of the fair value was based on significant inputs not observable in the market and thus fell within Level 3 of the fair value hierarchy. In conjunction with the termination of the Axeon Term Loan discussed in the following section, our obligation to provide credit support to Axeon ceased. Fair Value of Financial Instruments We recognize cash equivalents, receivables, payables and debt in our consolidated balance sheets at their carrying amounts. The fair values of these financial instruments, except for long-term debt, approximate their carrying amounts. The estimated fair values and carrying amounts of long-term debt, including the current portion, and the Axeon Term Loan were as follows: June 30, 2017 December 31, 2016 Long-term Debt Long-term Debt Axeon Term Loan (Thousands of Dollars) Fair value $ 3,591,708 $ 3,084,762 $ 110,000 Carrying amount $ 3,476,939 $ 3,014,364 $ 110,000 Long-term Debt. We estimated the fair value of our publicly traded senior notes based upon quoted prices in active markets; therefore, we determined that the fair value of our publicly traded senior notes falls in Level 1 of the fair value hierarchy. For our other debt, for which a quoted market price is not available, we 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. Axeon Term Loan. In December 2016, Lindsay Goldberg LLC, the private investment firm that owned Axeon, informed us that they entered into an agreement to sell Axeon’s retail asphalt sales and distribution business (the Axeon Sale), and we entered into an agreement with Axeon (the Axeon Letter Agreement) to settle and terminate the Axeon Term Loan for $110.0 million upon closing of the Axeon Sale. Therefore, we reduced the carrying amount of the Axeon Term Loan to $110.0 million and reclassified the Axeon Term Loan from “Other long-term assets, net” to “Other current assets” on the consolidated balance sheet as of December 31, 2016. The Axeon Sale closed on February 22, 2017, at which time we received the $110.0 million payment in accordance with the Axeon Letter Agreement. Furthermore, the Axeon Term Loan and our obligation to provide ongoing credit support to Axeon all terminated concurrently on February 22, 2017.

DERIVATIVES AND RISK MANAGEMENT

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES AND RISK MANAGEMENT ACTIVITIES	DERIVATIVES AND RISK MANAGEMENT ACTIVITIES 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. Interest Rate Risk We are a party to certain interest rate swap agreements to manage our exposure to changes in interest rates, which include forward-starting interest rate swap agreements related to forecasted debt issuances in 2018 and 2020. We entered into these swaps in order to hedge the risk of changes in the 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 pay a fixed rate and receive a rate based on the three-month USD LIBOR . These swaps qualify as cash flow hedges, and we designate them as such. We record the effective portion of mark-to-market adjustments as a component of “Accumulated other comprehensive income (loss)” (AOCI), and the amount in AOCI will be recognized in “Interest expense, net” as the forecasted interest payments occur or if the interest payments are probable not to occur. As of June 30, 2017 and December 31, 2016 , the aggregate notional amount of forward-starting interest rate swaps totaled $600.0 million . Commodity Price Risk We are exposed to market risks related to the volatility of crude oil and refined product prices. In order to reduce the risk of commodity price fluctuations with respect to our crude oil and refined product inventories and related firm commitments to purchase and/or sell such inventories, we utilize commodity futures and swap contracts, which qualify, and we designate, as fair value hedges. Derivatives that are intended to hedge our commodity price risk, but fail to qualify as fair value or cash flow hedges, are considered economic hedges, and we record associated gains and losses in net income. Our risk management committee oversees our trading controls and procedures and certain aspects of commodity and trading risk management. Our risk management committee also reviews all new commodity and trading risk management strategies in accordance with our risk management policy, as approved by our board of directors. The volume of commodity contracts is based on open derivative positions and represents the combined volume of our long and short open positions on an absolute basis, which totaled 2.3 million barrels and 4.7 million barrels as of June 30, 2017 and December 31, 2016 , respectively. We had $0.3 million and $1.8 million of margin deposits as of June 30, 2017 and December 31, 2016 , respectively. The fair values of our derivative instruments included in our consolidated balance sheets were as follows: Asset Derivatives Liability Derivatives Balance Sheet Location June 30, December 31, June 30, December 31, (Thousands of Dollars) Derivatives Designated as Hedging Instruments: Interest rate swaps Other long-term assets, net $ — $ 1,314 $ — $ — Commodity contracts Accrued liabilities 162 144 (188 ) (3,566 ) Interest rate swaps Accrued liabilities — — (6,392 ) — Interest rate swaps Other long-term liabilities — — (2,867 ) (2,632 ) Total 162 1,458 (9,447 ) (6,198 ) Derivatives Not Designated as Hedging Instruments: Commodity contracts Other current assets — 265 — (110 ) Commodity contracts Accrued liabilities 1,387 9,128 (1,812 ) (10,758 ) Total 1,387 9,393 (1,812 ) (10,868 ) Total Derivatives $ 1,549 $ 10,851 $ (11,259 ) $ (17,066 ) Certain of our derivative instruments are eligible for offset in the consolidated balance sheets and subject to master netting arrangements. Under our master netting arrangements, there is a legally enforceable right to offset amounts, and we intend to settle such amounts on a net basis. The following are the net amounts presented on the consolidated balance sheets: Commodity Contracts June 30, December 31, (Thousands of Dollars) Net amounts of assets presented in the consolidated balance sheets $ — $ 155 Net amounts of liabilities presented in the consolidated balance sheets $ (451 ) $ (5,052 ) We recognize the impact of our commodity contracts on earnings in “Cost of product sales” on the condensed consolidated statements of comprehensive income, and that impact was as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (Thousands of Dollars) Derivatives Designated as Fair Value Hedging Instruments: Gain (loss) recognized in income on derivative $ 364 $ (5,792 ) $ 2,461 $ (6,804 ) (Loss) gain recognized in income on hedged item (313 ) 6,938 (2,147 ) 9,804 Gain recognized in income for ineffective portion 51 1,146 314 3,000 Derivatives Not Designated as Hedging Instruments: Gain (loss) recognized in income on derivative $ 52 $ (724 ) $ (86 ) $ (4 ) Our interest rate swaps had the following impact on earnings: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (Thousands of Dollars) Derivatives Designated as Cash Flow Hedging Instruments: Loss recognized in other comprehensive income on derivative (effective portion) $ (7,980 ) $ (20,200 ) $ (7,941 ) $ (50,178 ) Loss reclassified from AOCI into interest expense, net (effective portion) $ (1,729 ) $ (2,158 ) $ (3,528 ) $ (4,380 ) As of June 30, 2017 , we expect to reclassify a loss of $5.8 million to “Interest expense, net” within the next twelve months associated with unwound forward-starting interest rate swaps.

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS	6 Months Ended
	Jun. 30, 2017
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS	RELATED PARTY TRANSACTIONS Employee Transfer from NuStar GP, LLC. On March 1, 2016, NuStar GP, LLC, the general partner of our general partner and a wholly owned subsidiary of NuStar GP Holdings, transferred and assigned to NuStar Services Company LLC (NuStar Services Co), a wholly owned subsidiary of NuStar Energy, all of NuStar GP, LLC’s employees and related benefit plans, programs, contracts and policies (the Employee Transfer). As a result of the Employee Transfer, we pay employee costs directly and sponsor the long-term incentive plan and other employee benefit plans. Please refer to Note 9 for a discussion of our employee benefit plans. GP Services Agreement. Prior to the Employee Transfer, our operations were managed by NuStar GP, LLC under a services agreement effective January 1, 2008, pursuant to which employees of NuStar GP, LLC performed services for our U.S. operations. Employees of NuStar GP, LLC provided services to us and NuStar GP Holdings; therefore, we reimbursed NuStar GP, LLC for all employee costs incurred prior to the Employee Transfer, other than the expenses allocated to NuStar GP Holdings. For the six months ended June 30, 2016, we reimbursed NuStar GP, LLC $21.7 million and $10.5 million for operating expenses and general and administrative expenses, respectively. In conjunction with the Employee Transfer, we entered into an Amended and Restated Services Agreement with NuStar GP, LLC, effective March 1, 2016 (the Amended GP Services Agreement). The Amended GP Services Agreement provides that we will furnish administrative services necessary to conduct the business of NuStar GP Holdings. NuStar GP Holdings will compensate us for these services through an annual fee of $1.0 million, subject to adjustment based on the annual merit increase percentage applicable to our employees for the most recently completed fiscal year and for changes in level of service. The Amended GP Services Agreement will terminate on March 1, 2020 and will automatically renew for successive two-year terms, unless terminated by either party.

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS	6 Months Ended
	Jun. 30, 2017
Compensation and Retirement Disclosure [Abstract]
EMPLOYEE BENEFIT PLANS	EMPLOYEE BENEFIT PLANS Effective March 1, 2016, in connection with the Employee Transfer, we assumed sponsorship and responsibility for the defined benefit plans and defined contribution plans described below. Prior to the Employee Transfer, NuStar GP, LLC sponsored and maintained these employee benefit plans and we reimbursed all costs incurred by NuStar GP, LLC related to these employee benefit plans at cost. The NuStar Pension Plan (the Pension Plan) is a qualified non-contributory defined benefit pension plan that provides eligible U.S. employees with retirement income as calculated under a cash balance formula. The NuStar Excess Pension Plan (the Excess Pension Plan) is a nonqualified deferred compensation plan that provides benefits to a select group of management or other highly compensated employees. The Pension Plan and Excess Pension Plan are collectively referred to as the Pension Plans. We also sponsor a contributory medical benefits plan for U.S. employees that retired prior to April 1, 2014. For employees that retire on or after April 1, 2014, we provide partial reimbursement for eligible third-party health care premiums. The following table summarizes the components of net periodic benefit costs for the Pension Plans and other postretirement benefits on a combined basis for periods prior to the Employee Transfer and after the Employee Transfer: Pension Plans Other Postretirement Benefits 2017 2016 2017 2016 (Thousands of Dollars) For the three months ended June 30: Service cost $ 2,239 $ 1,926 $ 113 $ 105 Interest cost 1,127 1,006 108 100 Expected return on assets (1,602 ) (1,351 ) — — Amortization of prior service credit (516 ) (516 ) (286 ) (286 ) Amortization of net loss 371 273 48 45 Net periodic benefit cost (income) $ 1,619 $ 1,338 $ (17 ) $ (36 ) For the six months ended June 30: Service cost $ 4,478 $ 3,852 $ 226 $ 210 Interest cost 2,254 2,012 216 200 Expected return on assets (3,205 ) (2,703 ) — — Amortization of prior service credit (1,031 ) (1,033 ) (572 ) (572 ) Amortization of net loss 742 546 96 90 Net periodic benefit cost (income) $ 3,238 $ 2,674 $ (34 ) $ (72 )

PARTNERS' EQUITY

PARTNERS' EQUITY	6 Months Ended
	Jun. 30, 2017
Partners' Capital Notes [Abstract]
PARTNERS' EQUITY	PARTNERS’ EQUITY Amendment of Partnership Agreement Our general partner amended and restated our partnership agreement in connection with the issuance of the Series B Preferred Units as described below and the Navigator Acquisition to waive up to an aggregate $22.0 million of the quarterly incentive distributions to our general partner for any NS common units issued from the date of the Acquisition Agreement (other than those attributable to NS common units issued under any equity compensation plan) for ten consecutive quarters, starting with the distributions for the second quarter of 2017. Issuance of Common Units On April 18, 2017 , we issued 14,375,000 common units representing limited partner interests at a price of $46.35 per unit. We used the net proceeds from this offering of $657.5 million , including a contribution of $13.6 million from our general partner to maintain its 2% general partner interest, to fund a portion of the purchase price for the Navigator Acquisition. Issuance of Series B Preferred Units On April 28, 2017 , we issued 15,400,000 of our Series B Preferred Units representing limited partner interests at a price of $25.00 per unit. We used the net proceeds of $371.8 million from the issuance of the Series B Preferred Units to fund a portion of the purchase price for the Navigator Acquisition and to pay related fees and expenses. Distributions on the Series B Preferred Units are payable out of any legally available funds, accrue and are cumulative from the date of original issuance of the Series B Preferred Units and are payable on the 15 th day of each of March, June, September and December of each year (beginning on September 15, 2017) to holders of record on the first day of each payment month. The initial distribution rate on the Series B Preferred Units to, but not including, June 15, 2022 is 7.625% per annum of the $25.00 liquidation preference per unit (equal to $1.90625 per unit per annum). On and after June 15, 2022, distributions on the Series B Preferred Units accumulate at a percentage of the $25.00 liquidation preference equal to an annual floating rate of the three-month LIBOR plus a spread of 5.643% . The Series B Preferred Units rank equal to our Series A Preferred Units and senior to our common units with respect to distribution rights and rights upon liquidation. At any time on or after June 15, 2022, we may redeem our Series B Preferred Units, in whole or in part, at a redemption price of $25.00 per unit plus an amount equal to all accumulated and unpaid distributions to, but not including, the date of redemption, whether or not declared. We may also redeem the Series B Preferred Units upon the occurrence of certain rating events or a change of control as defined in our partnership agreement. In the case of the latter instance, if we choose not to redeem the Series B Preferred Units, the preferred unitholders may have the ability to convert the Series B Preferred Units to common units at the then applicable conversion rate. Holders of the Series B Preferred Units have no voting rights except for certain exceptions set forth in our partnership agreement. Partners’ Equity Activity The following table summarizes changes to our partners’ equity (in thousands of dollars): Balance as of January 1, 2017 $ 1,611,617 Net income 84,190 Unit-based compensation expense 2,564 Other comprehensive income 4,894 Distributions to partners (230,902 ) Issuance of preferred and common units, including contribution from general partner 1,029,257 Other (571 ) Balance as of June 30, 2017 $ 2,501,049 Accumulated Other Comprehensive Income (Loss) The balance of and changes in the components included in AOCI were as follows: Foreign Currency Translation Cash Flow Hedges Pension and Other Postretirement Benefits Total (Thousands of Dollars) Balance as of January 1, 2017 $ (69,069 ) $ (22,258 ) $ (2,850 ) $ (94,177 ) Other comprehensive income (loss): Other comprehensive income (loss) before reclassification adjustments 10,072 (7,941 ) — 2,131 Net gain on pension costs reclassified into operating expense — — (572 ) (572 ) Net gain on pension costs reclassified into general and administrative expense — — (193 ) (193 ) Net loss on cash flow hedges reclassified into interest expense, net — 3,528 — 3,528 Other comprehensive income (loss) 10,072 (4,413 ) (765 ) 4,894 Balance as of June 30, 2017 $ (58,997 ) $ (26,671 ) $ (3,615 ) $ (89,283 ) Allocations of Net Income Our partnership agreement sets forth the calculation to be used to determine the amount and priority of cash distributions that the unitholders and general partner will receive. The partnership agreement also contains provisions for the allocation of net income to the unitholders and the general partner. Our net income for each quarterly reporting period is first allocated to the preferred limited partner unitholders in an amount equal to the earned distributions for the respective reporting period and then to the general partner in an amount equal to the general partner’s incentive distribution calculated based upon the declared distribution for the respective reporting period. We allocate the remaining net income or loss among the common unitholders ( 98% ) and general partner ( 2% ), as set forth in our partnership agreement. The following table details the calculation of net income applicable to the general partner: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (Thousands of Dollars, Except Percentage Data) Net income attributable to NuStar Energy L.P. $ 26,250 $ 52,517 $ 84,190 $ 109,918 Less preferred limited partner interest 9,950 — 14,763 — Less general partner incentive distribution 10,912 10,805 23,824 21,610 Net income after general partner incentive distribution and preferred limited partner interest 5,388 41,712 45,603 88,308 General partner interest allocation 2 % 2 % 2 % 2 % General partner interest allocation of net income 108 834 912 1,766 General partner incentive distribution 10,912 10,805 23,824 21,610 Net income applicable to general partner $ 11,020 $ 11,639 $ 24,736 $ 23,376 Cash Distributions General and Common Limited Partners . The following table reflects the allocation of total cash distributions to the general partner and common limited partners applicable to the period in which the distributions were earned: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (Thousands of Dollars, Except Per Unit Data) General partner interest $ 2,302 $ 1,961 $ 4,645 $ 3,922 General partner incentive distribution 10,912 10,805 23,824 21,610 Total general partner distribution 13,214 12,766 28,469 25,532 Common limited partners’ distribution 101,869 85,285 203,782 170,570 Total cash distributions $ 115,083 $ 98,051 $ 232,251 $ 196,102 Cash distributions per unit applicable to common limited partners $ 1.095 $ 1.095 $ 2.190 $ 2.190 The following table summarizes information related to our quarterly cash distributions to our general partner and common limited partners: Quarter Ended Cash Distributions Per Unit Total Cash Distributions Record Date Payment Date (Thousands of Dollars) June 30, 2017 (a) $ 1.095 $ 115,083 August 7, 2017 August 11, 2017 March 31, 2017 $ 1.095 $ 117,168 May 8, 2017 May 12, 2017 December 31, 2016 $ 1.095 $ 98,971 February 8, 2017 February 13, 2017 (a) The distribution was announced on July 28, 2017 . Preferred Units. The following table summarizes information related to our quarterly cash distributions on our Series A and Series B Preferred Units: Period Cash Distributions Per Unit Total Cash Distributions Record Date Payment Date (Thousands of Dollars) Series A Preferred Units: June 15, 2017 - September 14, 2017 (a) $ 0.53125 $ 4,813 September 1, 2017 September 15, 2017 March 15, 2017 - June 14, 2017 $ 0.53125 $ 4,813 June 1, 2017 June 15, 2017 November 25, 2016 - March 14, 2017 $ 0.64930556 $ 5,883 March 1, 2017 March 15, 2017 Series B Preferred Units: April 28, 2017 - September 14, 2017 (a) $ 0.725434028 $ 11,172 September 1, 2017 September 15, 2017 (a) The distribution was announced on July 28, 2017 .

NET INCOME PER COMMON UNIT

NET INCOME PER COMMON UNIT	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
NET INCOME PER COMMON UNIT	NET INCOME PER COMMON UNIT Basic and diluted net income per common unit is determined pursuant to the two-class method. Under this method, all earnings are allocated to our common limited partners and participating securities based on their respective rights to receive distributions earned during the period. Participating securities include our general partner interest and restricted units awarded under our long-term incentive plan. We compute basic net income per common unit by dividing net income attributable to common units by the weighted-average number of common units outstanding during the period. We compute diluted net income per common unit by dividing net income attributable to our common limited partners 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 include contingently issuable performance units awarded under our long-term incentive plan. The following table details the calculation of net income per common unit: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (Thousands of Dollars, Except Unit and Per Unit Data) Net income attributable to NuStar Energy L.P. $ 26,250 $ 52,517 $ 84,190 $ 109,918 Less: Distributions to general partner (including incentive distribution rights) 13,214 12,766 28,469 25,532 Less: Distributions to common limited partners 101,869 85,285 203,782 170,570 Less: Distributions to preferred limited partners 9,950 — 14,763 — Less: Distribution equivalent rights to restricted units 712 657 1,427 1,319 Distributions in excess of earnings $ (99,495 ) $ (46,191 ) $ (164,251 ) $ (87,503 ) Net income attributable to common units: Distributions to common limited partners $ 101,869 $ 85,285 $ 203,782 $ 170,570 Allocation of distributions in excess of earnings (97,505 ) (45,267 ) (160,966 ) (85,752 ) Total $ 4,364 $ 40,018 $ 42,816 $ 84,818 Basic weighted-average common units outstanding 90,345,469 77,886,219 84,526,506 77,886,148 Diluted common units outstanding: Basic weighted-average common units outstanding 90,345,469 77,886,219 84,526,506 77,886,148 Effect of dilutive potential common units — 53,060 — 57,554 Diluted weighted-average common units outstanding 90,345,469 77,939,279 84,526,506 77,943,702 Basic and diluted net income per common unit $ 0.05 $ 0.52 $ 0.51 $ 1.09

STATEMENTS OF CASH FLOWS

STATEMENTS OF CASH FLOWS	6 Months Ended
	Jun. 30, 2017
Statement of Cash Flows [Abstract]
STATEMENTS OF CASH FLOWS	STATEMENTS OF CASH FLOWS Changes in current assets and current liabilities were as follows: Six Months Ended June 30, 2017 2016 (Thousands of Dollars) Decrease (increase) in current assets: Accounts receivable $ 48,875 $ (572 ) Receivable from related party 231 — Inventories 13,005 99 Other current assets (2,388 ) 5,064 Increase (decrease) in current liabilities: Accounts payable (57,822 ) (4,717 ) Payable to related party, net — 697 Accrued interest payable 6,234 (393 ) Accrued liabilities (14,703 ) (12,321 ) Taxes other than income tax (3,094 ) (348 ) Income tax payable (5,682 ) (2,783 ) Changes in current assets and current liabilities $ (15,344 ) $ (15,274 ) The above changes in current assets and current liabilities differ from changes between amounts reflected in the applicable consolidated balance sheets due to: • current assets and current liabilities acquired during the period; • the change in the amount accrued for capital expenditures; and • the effect of foreign currency translation. Cash flows related to interest and income taxes were as follows: Six Months Ended June 30, 2017 2016 (Thousands of Dollars) Cash paid for interest, net of amount capitalized $ 70,119 $ 70,280 Cash paid for income taxes, net of tax refunds received $ 9,556 $ 8,826

SEGMENT INFORMATION

SEGMENT INFORMATION	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION Our reportable business segments consist of pipeline, storage and fuels marketing. 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, 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. Our principal operations include the transportation of petroleum products and anhydrous ammonia, the terminalling and storage of petroleum products and the marketing of petroleum products. Intersegment revenues result from storage agreements with wholly owned subsidiaries of NuStar Energy at rates consistent with the rates charged to third parties for storage. Results of operations for the reportable segments were as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (Thousands of Dollars) Revenues: Pipeline $ 126,740 $ 121,575 $ 247,980 $ 240,448 Storage: Third parties 154,830 146,367 298,318 292,751 Intersegment 3,729 5,507 7,672 11,522 Total storage 158,559 151,874 305,990 304,273 Fuels marketing 153,918 169,862 376,620 310,308 Consolidation and intersegment eliminations (3,729 ) (5,507 ) (7,672 ) (11,522 ) Total revenues $ 435,488 $ 437,804 $ 922,918 $ 843,507 Operating income: Pipeline $ 52,868 $ 63,552 $ 117,896 $ 127,817 Storage 56,049 51,063 109,808 108,076 Fuels marketing 289 1,392 5,429 619 Consolidation and intersegment eliminations 1 1 1 1 Total segment operating income 109,207 116,008 233,134 236,513 General and administrative expenses 33,604 22,657 58,199 46,442 Other depreciation and amortization expense 2,199 2,134 4,392 4,289 Total operating income $ 73,404 $ 91,217 $ 170,543 $ 185,782 Total assets by reportable segment were as follows: June 30, December 31, (Thousands of Dollars) Pipeline $ 3,458,700 $ 2,024,633 Storage 2,605,122 2,522,586 Fuels marketing 103,623 168,347 Total segment assets 6,167,445 4,715,566 Other partnership assets 191,879 314,979 Total consolidated assets $ 6,359,324 $ 5,030,545

CONDENSED CONSOLIDATING FINANCI

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS	6 Months Ended
	Jun. 30, 2017
CONDENSED CONSOLIDATING FINANCIAL STATEMENTS [Abstract]
CONDENSED CONSOLIDATING FINANCIAL STATEMENTS	CONDENSED CONSOLIDATING FINANCIAL STATEMENTS NuStar Energy has no operations and its assets consist mainly of its 100% indirectly owned subsidiaries, NuStar Logistics and NuPOP. The senior and subordinated notes issued by NuStar Logistics are fully and unconditionally guaranteed by NuStar Energy and NuPOP. As a result, the following condensed consolidating financial statements are presented as an alternative to providing separate financial statements for NuStar Logistics and NuPOP. Condensed Consolidating Balance Sheets June 30, 2017 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Assets Cash and cash equivalents $ 867 $ 64 $ — $ 28,260 $ — $ 29,191 Receivables, net — 93 — 147,541 — 147,634 Inventories — 1,977 3,254 20,541 — 25,772 Other current assets 69 12,623 5,475 10,134 (36 ) 28,265 Intercompany receivable — 3,088,723 — — (3,088,723 ) — Total current assets 936 3,103,480 8,729 206,476 (3,088,759 ) 230,862 Property, plant and equipment, net — 1,911,890 578,504 1,656,939 — 4,147,333 Intangible assets, net — 63,163 — 794,453 — 857,616 Goodwill — 149,453 170,652 703,254 — 1,023,359 Investment in wholly owned subsidiaries 3,085,078 28,711 1,270,678 842,841 (5,227,308 ) — Deferred income tax asset — — — 1,359 — 1,359 Other long-term assets, net 378 60,588 28,039 9,790 — 98,795 Total assets $ 3,086,392 $ 5,317,285 $ 2,056,602 $ 4,215,112 $ (8,316,067 ) $ 6,359,324 Liabilities and Partners’ Equity Accounts payable $ 6,330 $ 21,064 $ 5,573 $ 59,701 $ — $ 92,668 Short-term debt — 45,000 — — — 45,000 Current portion of long-term debt — 350,021 — 53,054 — 403,075 Accrued interest payable — 40,206 — 26 — 40,232 Accrued liabilities 720 19,929 11,434 23,903 — 55,986 Taxes other than income tax 8 5,867 3,819 7,015 — 16,709 Income tax payable — — 2 881 (36 ) 847 Intercompany payable 489,002 — 1,182,082 1,417,639 (3,088,723 ) — Total current liabilities 496,060 482,087 1,202,910 1,562,219 (3,088,759 ) 654,517 Long-term debt — 3,073,864 — — — 3,073,864 Deferred income tax liability — 1,862 13 20,988 — 22,863 Other long-term liabilities — 43,538 10,973 52,520 — 107,031 Total partners’ equity 2,590,332 1,715,934 842,706 2,579,385 (5,227,308 ) 2,501,049 Total liabilities and partners’ equity $ 3,086,392 $ 5,317,285 $ 2,056,602 $ 4,215,112 $ (8,316,067 ) $ 6,359,324 Condensed Consolidating Balance Sheets December 31, 2016 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Assets Cash and cash equivalents $ 870 $ 5 $ — $ 35,067 $ — $ 35,942 Receivables, net — 3,040 — 167,570 — 170,610 Inventories — 2,216 2,005 33,724 — 37,945 Other current assets 61 120,350 1,829 10,446 — 132,686 Intercompany receivable — 1,308,415 — 57,785 (1,366,200 ) — Total current assets 931 1,434,026 3,834 304,592 (1,366,200 ) 377,183 Property, plant and equipment, net — 1,935,172 589,139 1,197,972 — 3,722,283 Intangible assets, net — 71,033 — 56,050 — 127,083 Goodwill — 149,453 170,652 376,532 — 696,637 Investment in wholly owned subsidiaries 1,964,736 34,778 1,221,717 874,649 (4,095,880 ) — Deferred income tax asset — — — 2,051 — 2,051 Other long-term assets, net 1,255 63,586 28,587 11,880 — 105,308 Total assets $ 1,966,922 $ 3,688,048 $ 2,013,929 $ 2,823,726 $ (5,462,080 ) $ 5,030,545 Liabilities and Partners’ Equity Accounts payable $ 2,436 $ 24,272 $ 7,124 $ 84,854 $ — $ 118,686 Short-term debt — 54,000 — — — 54,000 Accrued interest payable — 34,008 — 22 — 34,030 Accrued liabilities 1,070 7,118 10,766 41,531 — 60,485 Taxes other than income tax 125 6,854 3,253 5,453 — 15,685 Income tax payable — 1,326 5 5,179 — 6,510 Intercompany payable 257,497 — 1,108,703 — (1,366,200 ) — Total current liabilities 261,128 127,578 1,129,851 137,039 (1,366,200 ) 289,396 Long-term debt — 2,956,338 — 58,026 — 3,014,364 Deferred income tax liability — 1,862 13 20,329 — 22,204 Other long-term liabilities — 34,358 9,436 49,170 — 92,964 Total partners’ equity 1,705,794 567,912 874,629 2,559,162 (4,095,880 ) 1,611,617 Total liabilities and partners’ equity $ 1,966,922 $ 3,688,048 $ 2,013,929 $ 2,823,726 $ (5,462,080 ) $ 5,030,545 Condensed Consolidating Statements of Comprehensive Income (Loss) For the Three Months Ended June 30, 2017 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 128,895 $ 50,577 $ 256,363 $ (347 ) $ 435,488 Costs and expenses 486 83,096 37,781 241,068 (347 ) 362,084 Operating (loss) income (486 ) 45,799 12,796 15,295 — 73,404 Equity in earnings (loss) of subsidiaries 26,732 (7,177 ) 22,746 34,141 (76,442 ) — Interest income (expense), net 4 (46,390 ) (1,401 ) 2,175 — (45,612 ) Other income, net — 62 3 23 — 88 Income (loss) before income tax (benefit) expense 26,250 (7,706 ) 34,144 51,634 (76,442 ) 27,880 Income tax (benefit) expense — (365 ) 1 1,994 — 1,630 Net income (loss) $ 26,250 $ (7,341 ) $ 34,143 $ 49,640 $ (76,442 ) $ 26,250 Comprehensive income (loss) $ 26,250 $ (13,592 ) $ 34,143 $ 57,022 $ (76,442 ) $ 27,381 Condensed Consolidating Statements of Comprehensive Income (Loss) For the Three Months Ended June 30, 2016 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 125,562 $ 58,129 $ 254,489 $ (376 ) $ 437,804 Costs and expenses 434 73,505 35,986 237,038 (376 ) 346,587 Operating (loss) income (434 ) 52,057 22,143 17,451 — 91,217 Equity in earnings (loss) of subsidiaries 52,929 (2,203 ) 20,171 44,346 (115,243 ) — Interest (expense) income, net — (41,155 ) 2,026 549 4,351 (34,229 ) Other income (expense), net 22 21 7 (251 ) — (201 ) Income before income tax expense 52,517 8,720 44,347 62,095 (110,892 ) 56,787 Income tax expense — 347 3 3,920 — 4,270 Net income $ 52,517 $ 8,373 $ 44,344 $ 58,175 $ (110,892 ) $ 52,517 Comprehensive income (loss) $ 52,517 $ (9,669 ) $ 44,344 $ 52,878 $ (110,892 ) $ 29,178 Condensed Consolidating Statements of Comprehensive Income (Loss) For the Six Months Ended June 30, 2017 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 252,524 $ 102,818 $ 568,210 $ (634 ) $ 922,918 Costs and expenses 995 159,418 67,587 525,009 (634 ) 752,375 Operating (loss) income (995 ) 93,106 35,231 43,201 — 170,543 Equity in earnings (loss) of subsidiaries 85,177 (6,067 ) 48,961 81,494 (209,565 ) — Interest income (expense), net 8 (83,304 ) (2,705 ) 3,975 — (82,026 ) Other income, net — 83 9 136 — 228 Income before income tax (benefit) expense 84,190 3,818 81,496 128,806 (209,565 ) 88,745 Income tax (benefit) expense — (34 ) 2 4,587 — 4,555 Net income $ 84,190 $ 3,852 $ 81,494 $ 124,219 $ (209,565 ) $ 84,190 Comprehensive income (loss) $ 84,190 $ (561 ) $ 81,494 $ 133,526 $ (209,565 ) $ 89,084 Condensed Consolidating Statements of Comprehensive Income (Loss) For the Six Months Ended June 30, 2016 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 252,140 $ 106,114 $ 485,965 $ (712 ) $ 843,507 Costs and expenses 952 142,396 67,001 448,088 (712 ) 657,725 Operating (loss) income (952 ) 109,744 39,113 37,877 — 185,782 Equity in earnings (loss) of subsidiaries 110,851 (5,318 ) 45,454 88,089 (239,076 ) — Interest (expense) income, net — (80,787 ) 3,534 8,901 — (68,352 ) Other income (expense), net 22 22 (10 ) (406 ) — (372 ) Income before income tax expense 109,921 23,661 88,091 134,461 (239,076 ) 117,058 Income tax expense 3 693 5 6,439 — 7,140 Net income $ 109,918 $ 22,968 $ 88,086 $ 128,022 $ (239,076 ) $ 109,918 Comprehensive income (loss) $ 109,918 $ (22,830 ) $ 88,086 $ 135,703 $ (239,076 ) $ 71,801 Condensed Consolidating Statements of Cash Flows For the Six Months Ended June 30, 2017 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Net cash provided by operating activities $ 225,566 $ 85,203 $ 45,790 $ 192,692 $ (340,263 ) $ 208,988 Cash flows from investing activities: Capital expenditures — (19,639 ) (5,588 ) (83,622 ) — (108,849 ) Change in accounts payable related to capital expenditures — (2,823 ) (35 ) 9,709 — 6,851 Acquisitions — — — (1,476,719 ) — (1,476,719 ) Proceeds from sale or disposition of assets — 1,898 12 56 — 1,966 Investment in subsidiaries (1,262,000 ) — — (126 ) 1,262,126 — Proceeds from Axeon term loan — 110,000 — — — 110,000 Net cash (used in) provided by investing activities (1,262,000 ) 89,436 (5,611 ) (1,550,702 ) 1,262,126 (1,466,751 ) Cash flows from financing activities: Debt borrowings — 1,536,761 — 65,400 — 1,602,161 Debt repayments — (1,625,739 ) — (70,500 ) — (1,696,239 ) Note offering, net of issuance costs — 543,313 — — — 543,313 Issuance of preferred units, net of issuance costs 371,802 — — — — 371,802 Issuance of common units, net of issuance costs 643,858 — — — — 643,858 General partner contribution 13,597 — — — — 13,597 Distributions to preferred unitholders (10,696 ) (5,348 ) (5,348 ) (5,348 ) 16,044 (10,696 ) Distributions to common unitholders and general partner (216,139 ) (108,070 ) (108,069 ) (108,080 ) 324,219 (216,139 ) Contributions from affiliates — 1,262,000 — 126 (1,262,126 ) — Net intercompany activity 236,622 (1,778,816 ) 73,237 1,468,957 — — Other, net (2,613 ) 1,319 1 (1 ) — (1,294 ) Net cash provided by (used in) financing activities 1,036,431 (174,580 ) (40,179 ) 1,350,554 (921,863 ) 1,250,363 Effect of foreign exchange rate changes on cash — — — 649 — 649 Net (decrease) increase in cash and cash equivalents (3 ) 59 — (6,807 ) — (6,751 ) Cash and cash equivalents as of the beginning of the period 870 5 — 35,067 — 35,942 Cash and cash equivalents as of the end of the period $ 867 $ 64 $ — $ 28,260 $ — $ 29,191 Condensed Consolidating Statements of Cash Flows For the Six Months Ended June 30, 2016 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Net cash provided by operating activities $ 194,793 $ 58,160 $ 79,728 $ 201,026 $ (318,674 ) $ 215,033 Cash flows from investing activities: Capital expenditures — (47,672 ) (19,474 ) (28,215 ) — (95,361 ) Change in accounts payable related to capital expenditures — (12,230 ) 3,357 (3,801 ) — (12,674 ) Net cash used in investing activities — (59,902 ) (16,117 ) (32,016 ) — (108,035 ) Cash flows from financing activities: Debt borrowings — 610,504 — 17,400 — 627,904 Debt repayments — (532,992 ) — (14,200 ) — (547,192 ) Distributions to common unitholders and general partner (196,102 ) (98,051 ) (98,051 ) (98,062 ) 294,164 (196,102 ) Distributions to affiliates — — — (24,510 ) 24,510 — Net intercompany activity 1,755 24,561 34,440 (60,756 ) — — Other, net (668 ) (2,281 ) — (8,891 ) — (11,840 ) Net cash (used in) provided by financing activities (195,015 ) 1,741 (63,611 ) (189,019 ) 318,674 (127,230 ) Effect of foreign exchange rate changes on cash — — — 4,389 — 4,389 Net decrease in cash and cash equivalents (222 ) (1 ) — (15,620 ) — (15,843 ) Cash and cash equivalents as of the beginning of the period 885 4 — 117,973 — 118,862 Cash and cash equivalents as of the end of the period $ 663 $ 3 $ — $ 102,353 $ — $ 103,019

ACQUISITIONS (Tables)

ACQUISITIONS (Tables)	6 Months Ended
	Jun. 30, 2017
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The following table reflects the preliminary purchase price allocation: Preliminary Purchase Price Allocation (Thousands of Dollars) Accounts receivable $ 4,916 Other current assets 2,476 Property, plant and equipment, net 396,603 Intangible assets (a) 750,000 Goodwill (b) 326,722 Other long-term assets, net 2,125 Current liabilities (26,971 ) Preliminary purchase price allocation, net of cash acquired 1,455,871 Pending closing adjustment 20,848 Cash disbursed at closing $ 1,476,719
Business Acquisition, Pro Forma Information [Table Text Block]	The unaudited pro forma information for the three and six months ended June 30, 2017 and 2016 presented below combines the historical financial information for Navigator and the Partnership for those periods. The information assumes we completed the Navigator Acquisition on January 1, 2016 and the following: • we issued approximately 14.4 million common units; • we received a contribution from our general partner of $13.6 million to maintain its 2% interest; • we issued 15.4 million Series B Preferred Units; • we issued $550.0 million of 5.625% senior notes; • additional depreciation and amortization that would have been incurred assuming the fair value adjustments to property, plant and equipment and intangible assets reflected in the preliminary purchase price allocation above have been applied; and • we satisfied Navigator’s outstanding obligations under its revolving credit agreement. Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (Thousands of Dollars, Except Per Unit Data) Revenues $ 439,933 $ 443,314 $ 937,317 $ 852,169 Net income $ 21,211 $ 33,378 $ 63,659 $ 70,118 Basic and diluted net (loss) income per common unit $ (0.03 ) $ 0.15 $ 0.16 $ 0.34

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]	The following assets and liabilities are measured at fair value on a recurring basis: June 30, 2017 Level 1 Level 2 Level 3 Total (Thousands of Dollars) Assets: Other current assets: Product imbalances $ 5,249 $ — $ — $ 5,249 Total $ 5,249 $ — $ — $ 5,249 Liabilities: Accrued liabilities: Product imbalances $ (3,031 ) $ — $ — $ (3,031 ) Commodity derivatives (451 ) — — (451 ) Interest rate swaps — (6,392 ) — (6,392 ) Other long-term liabilities: Interest rate swaps — (2,867 ) — (2,867 ) Total $ (3,482 ) $ (9,259 ) $ — $ (12,741 ) December 31, 2016 Level 1 Level 2 Level 3 Total (Thousands of Dollars) Assets: Other current assets: Product imbalances $ 1,551 $ — $ — $ 1,551 Commodity derivatives — 155 — 155 Other long-term assets, net: Interest rate swaps — 1,314 — 1,314 Total $ 1,551 $ 1,469 $ — $ 3,020 Liabilities: Accrued liabilities: Product imbalances $ (1,577 ) $ — $ — $ (1,577 ) Commodity derivatives (4,887 ) (165 ) — (5,052 ) Other long-term liabilities: Guarantee liability — — (1,230 ) (1,230 ) Interest rate swaps — (2,632 ) — (2,632 ) Total $ (6,464 ) $ (2,797 ) $ (1,230 ) $ (10,491 )
Fair Value and Carrying Value of Debt and Note Receivable [Table Text Block]	The estimated fair values and carrying amounts of long-term debt, including the current portion, and the Axeon Term Loan were as follows: June 30, 2017 December 31, 2016 Long-term Debt Long-term Debt Axeon Term Loan (Thousands of Dollars) Fair value $ 3,591,708 $ 3,084,762 $ 110,000 Carrying amount $ 3,476,939 $ 3,014,364 $ 110,000

DERIVATIVES AND RISK MANAGEME22

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES (Tables)	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	The fair values of our derivative instruments included in our consolidated balance sheets were as follows: Asset Derivatives Liability Derivatives Balance Sheet Location June 30, December 31, June 30, December 31, (Thousands of Dollars) Derivatives Designated as Hedging Instruments: Interest rate swaps Other long-term assets, net $ — $ 1,314 $ — $ — Commodity contracts Accrued liabilities 162 144 (188 ) (3,566 ) Interest rate swaps Accrued liabilities — — (6,392 ) — Interest rate swaps Other long-term liabilities — — (2,867 ) (2,632 ) Total 162 1,458 (9,447 ) (6,198 ) Derivatives Not Designated as Hedging Instruments: Commodity contracts Other current assets — 265 — (110 ) Commodity contracts Accrued liabilities 1,387 9,128 (1,812 ) (10,758 ) Total 1,387 9,393 (1,812 ) (10,868 ) Total Derivatives $ 1,549 $ 10,851 $ (11,259 ) $ (17,066 )
Derivatives Assets And Liabilities Eligible for Offset Net [Table Text Block]	The following are the net amounts presented on the consolidated balance sheets: Commodity Contracts June 30, December 31, (Thousands of Dollars) Net amounts of assets presented in the consolidated balance sheets $ — $ 155 Net amounts of liabilities presented in the consolidated balance sheets $ (451 ) $ (5,052 )
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Text Block]	We recognize the impact of our commodity contracts on earnings in “Cost of product sales” on the condensed consolidated statements of comprehensive income, and that impact was as follows: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (Thousands of Dollars) Derivatives Designated as Fair Value Hedging Instruments: Gain (loss) recognized in income on derivative $ 364 $ (5,792 ) $ 2,461 $ (6,804 ) (Loss) gain recognized in income on hedged item (313 ) 6,938 (2,147 ) 9,804 Gain recognized in income for ineffective portion 51 1,146 314 3,000 Derivatives Not Designated as Hedging Instruments: Gain (loss) recognized in income on derivative $ 52 $ (724 ) $ (86 ) $ (4 ) Our interest rate swaps had the following impact on earnings: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (Thousands of Dollars) Derivatives Designated as Cash Flow Hedging Instruments: Loss recognized in other comprehensive income on derivative (effective portion) $ (7,980 ) $ (20,200 ) $ (7,941 ) $ (50,178 ) Loss reclassified from AOCI into interest expense, net (effective portion) $ (1,729 ) $ (2,158 ) $ (3,528 ) $ (4,380 )

EMPLOYEE BENEFIT PLANS (Tables)

EMPLOYEE BENEFIT PLANS (Tables)	6 Months Ended
	Jun. 30, 2017
Compensation and Retirement Disclosure [Abstract]
Schedule of Net Benefit Costs [Table Text Block]	The following table summarizes the components of net periodic benefit costs for the Pension Plans and other postretirement benefits on a combined basis for periods prior to the Employee Transfer and after the Employee Transfer: Pension Plans Other Postretirement Benefits 2017 2016 2017 2016 (Thousands of Dollars) For the three months ended June 30: Service cost $ 2,239 $ 1,926 $ 113 $ 105 Interest cost 1,127 1,006 108 100 Expected return on assets (1,602 ) (1,351 ) — — Amortization of prior service credit (516 ) (516 ) (286 ) (286 ) Amortization of net loss 371 273 48 45 Net periodic benefit cost (income) $ 1,619 $ 1,338 $ (17 ) $ (36 ) For the six months ended June 30: Service cost $ 4,478 $ 3,852 $ 226 $ 210 Interest cost 2,254 2,012 216 200 Expected return on assets (3,205 ) (2,703 ) — — Amortization of prior service credit (1,031 ) (1,033 ) (572 ) (572 ) Amortization of net loss 742 546 96 90 Net periodic benefit cost (income) $ 3,238 $ 2,674 $ (34 ) $ (72 )

PARTNERS' EQUITY (Tables)

PARTNERS' EQUITY (Tables)	6 Months Ended
	Jun. 30, 2017
Distribution Made to Limited Partner [Line Items]
Schedule of Changes in Partners' Equity	The following table summarizes changes to our partners’ equity (in thousands of dollars): Balance as of January 1, 2017 $ 1,611,617 Net income 84,190 Unit-based compensation expense 2,564 Other comprehensive income 4,894 Distributions to partners (230,902 ) Issuance of preferred and common units, including contribution from general partner 1,029,257 Other (571 ) Balance as of June 30, 2017 $ 2,501,049
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The balance of and changes in the components included in AOCI were as follows: Foreign Currency Translation Cash Flow Hedges Pension and Other Postretirement Benefits Total (Thousands of Dollars) Balance as of January 1, 2017 $ (69,069 ) $ (22,258 ) $ (2,850 ) $ (94,177 ) Other comprehensive income (loss): Other comprehensive income (loss) before reclassification adjustments 10,072 (7,941 ) — 2,131 Net gain on pension costs reclassified into operating expense — — (572 ) (572 ) Net gain on pension costs reclassified into general and administrative expense — — (193 ) (193 ) Net loss on cash flow hedges reclassified into interest expense, net — 3,528 — 3,528 Other comprehensive income (loss) 10,072 (4,413 ) (765 ) 4,894 Balance as of June 30, 2017 $ (58,997 ) $ (26,671 ) $ (3,615 ) $ (89,283 )
Schedule of Calculation of Net Income Applicable to General Partner [Text Block]	The following table details the calculation of net income applicable to the general partner: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (Thousands of Dollars, Except Percentage Data) Net income attributable to NuStar Energy L.P. $ 26,250 $ 52,517 $ 84,190 $ 109,918 Less preferred limited partner interest 9,950 — 14,763 — Less general partner incentive distribution 10,912 10,805 23,824 21,610 Net income after general partner incentive distribution and preferred limited partner interest 5,388 41,712 45,603 88,308 General partner interest allocation 2 % 2 % 2 % 2 % General partner interest allocation of net income 108 834 912 1,766 General partner incentive distribution 10,912 10,805 23,824 21,610 Net income applicable to general partner $ 11,020 $ 11,639 $ 24,736 $ 23,376
Schedule of Distributions To General and Limited Partners [Text Block]	The following table reflects the allocation of total cash distributions to the general partner and common limited partners applicable to the period in which the distributions were earned: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (Thousands of Dollars, Except Per Unit Data) General partner interest $ 2,302 $ 1,961 $ 4,645 $ 3,922 General partner incentive distribution 10,912 10,805 23,824 21,610 Total general partner distribution 13,214 12,766 28,469 25,532 Common limited partners’ distribution 101,869 85,285 203,782 170,570 Total cash distributions $ 115,083 $ 98,051 $ 232,251 $ 196,102 Cash distributions per unit applicable to common limited partners $ 1.095 $ 1.095 $ 2.190 $ 2.190
Distributions Made to Limited and General Partners, by Distribution [Table Text Block]	The following table summarizes information related to our quarterly cash distributions to our general partner and common limited partners: Quarter Ended Cash Distributions Per Unit Total Cash Distributions Record Date Payment Date (Thousands of Dollars) June 30, 2017 (a) $ 1.095 $ 115,083 August 7, 2017 August 11, 2017 March 31, 2017 $ 1.095 $ 117,168 May 8, 2017 May 12, 2017 December 31, 2016 $ 1.095 $ 98,971 February 8, 2017 February 13, 2017 (a) The distribution was announced on July 28, 2017 .
Distributions Made to Limited Partner, by Distribution [Table Text Block]	The following table summarizes information related to our quarterly cash distributions on our Series A and Series B Preferred Units: Period Cash Distributions Per Unit Total Cash Distributions Record Date Payment Date (Thousands of Dollars) Series A Preferred Units: June 15, 2017 - September 14, 2017 (a) $ 0.53125 $ 4,813 September 1, 2017 September 15, 2017 March 15, 2017 - June 14, 2017 $ 0.53125 $ 4,813 June 1, 2017 June 15, 2017 November 25, 2016 - March 14, 2017 $ 0.64930556 $ 5,883 March 1, 2017 March 15, 2017 Series B Preferred Units: April 28, 2017 - September 14, 2017 (a) $ 0.725434028 $ 11,172 September 1, 2017 September 15, 2017 (a) The distribution was announced on July 28, 2017 .

NET INCOME PER COMMON UNIT (Tab

NET INCOME PER COMMON UNIT (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Schedule of Net Income Per Common Unit	The following table details the calculation of net income per common unit: Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 (Thousands of Dollars, Except Unit and Per Unit Data) Net income attributable to NuStar Energy L.P. $ 26,250 $ 52,517 $ 84,190 $ 109,918 Less: Distributions to general partner (including incentive distribution rights) 13,214 12,766 28,469 25,532 Less: Distributions to common limited partners 101,869 85,285 203,782 170,570 Less: Distributions to preferred limited partners 9,950 — 14,763 — Less: Distribution equivalent rights to restricted units 712 657 1,427 1,319 Distributions in excess of earnings $ (99,495 ) $ (46,191 ) $ (164,251 ) $ (87,503 ) Net income attributable to common units: Distributions to common limited partners $ 101,869 $ 85,285 $ 203,782 $ 170,570 Allocation of distributions in excess of earnings (97,505 ) (45,267 ) (160,966 ) (85,752 ) Total $ 4,364 $ 40,018 $ 42,816 $ 84,818 Basic weighted-average common units outstanding 90,345,469 77,886,219 84,526,506 77,886,148 Diluted common units outstanding: Basic weighted-average common units outstanding 90,345,469 77,886,219 84,526,506 77,886,148 Effect of dilutive potential common units — 53,060 — 57,554 Diluted weighted-average common units outstanding 90,345,469 77,939,279 84,526,506 77,943,702 Basic and diluted net income per common unit $ 0.05 $ 0.52 $ 0.51 $ 1.09

STATEMENTS OF CASH FLOWS (Table

STATEMENTS OF CASH FLOWS (Tables)	6 Months Ended
	Jun. 30, 2017
Statement of Cash Flows [Abstract]
Schedule of Changes in Current Assets and Liabilities [Text Block]	Changes in current assets and current liabilities were as follows: Six Months Ended June 30, 2017 2016 (Thousands of Dollars) Decrease (increase) in current assets: Accounts receivable $ 48,875 $ (572 ) Receivable from related party 231 — Inventories 13,005 99 Other current assets (2,388 ) 5,064 Increase (decrease) in current liabilities: Accounts payable (57,822 ) (4,717 ) Payable to related party, net — 697 Accrued interest payable 6,234 (393 ) Accrued liabilities (14,703 ) (12,321 ) Taxes other than income tax (3,094 ) (348 ) Income tax payable (5,682 ) (2,783 ) Changes in current assets and current liabilities $ (15,344 ) $ (15,274 )
Schedule of Supplemental Cash Flow Information [Text Block]	Cash flows related to interest and income taxes were as follows: Six Months Ended June 30, 2017 2016 (Thousands of Dollars) Cash paid for interest, net of amount capitalized $ 70,119 $ 70,280 Cash paid for income taxes, net of tax refunds received $ 9,556 $ 8,826

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	6 Months Ended
	Jun. 30, 2017
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, 2017 2016 2017 2016 (Thousands of Dollars) Revenues: Pipeline $ 126,740 $ 121,575 $ 247,980 $ 240,448 Storage: Third parties 154,830 146,367 298,318 292,751 Intersegment 3,729 5,507 7,672 11,522 Total storage 158,559 151,874 305,990 304,273 Fuels marketing 153,918 169,862 376,620 310,308 Consolidation and intersegment eliminations (3,729 ) (5,507 ) (7,672 ) (11,522 ) Total revenues $ 435,488 $ 437,804 $ 922,918 $ 843,507 Operating income: Pipeline $ 52,868 $ 63,552 $ 117,896 $ 127,817 Storage 56,049 51,063 109,808 108,076 Fuels marketing 289 1,392 5,429 619 Consolidation and intersegment eliminations 1 1 1 1 Total segment operating income 109,207 116,008 233,134 236,513 General and administrative expenses 33,604 22,657 58,199 46,442 Other depreciation and amortization expense 2,199 2,134 4,392 4,289 Total operating income $ 73,404 $ 91,217 $ 170,543 $ 185,782
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	Total assets by reportable segment were as follows: June 30, December 31, (Thousands of Dollars) Pipeline $ 3,458,700 $ 2,024,633 Storage 2,605,122 2,522,586 Fuels marketing 103,623 168,347 Total segment assets 6,167,445 4,715,566 Other partnership assets 191,879 314,979 Total consolidated assets $ 6,359,324 $ 5,030,545

CONDENSED CONSOLIDATING FINAN28

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS (Tables)	6 Months Ended
	Jun. 30, 2017
CONDENSED CONSOLIDATING FINANCIAL STATEMENTS [Abstract]
Condensed Consolidating Balance Sheets [Text Block]	Condensed Consolidating Balance Sheets June 30, 2017 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Assets Cash and cash equivalents $ 867 $ 64 $ — $ 28,260 $ — $ 29,191 Receivables, net — 93 — 147,541 — 147,634 Inventories — 1,977 3,254 20,541 — 25,772 Other current assets 69 12,623 5,475 10,134 (36 ) 28,265 Intercompany receivable — 3,088,723 — — (3,088,723 ) — Total current assets 936 3,103,480 8,729 206,476 (3,088,759 ) 230,862 Property, plant and equipment, net — 1,911,890 578,504 1,656,939 — 4,147,333 Intangible assets, net — 63,163 — 794,453 — 857,616 Goodwill — 149,453 170,652 703,254 — 1,023,359 Investment in wholly owned subsidiaries 3,085,078 28,711 1,270,678 842,841 (5,227,308 ) — Deferred income tax asset — — — 1,359 — 1,359 Other long-term assets, net 378 60,588 28,039 9,790 — 98,795 Total assets $ 3,086,392 $ 5,317,285 $ 2,056,602 $ 4,215,112 $ (8,316,067 ) $ 6,359,324 Liabilities and Partners’ Equity Accounts payable $ 6,330 $ 21,064 $ 5,573 $ 59,701 $ — $ 92,668 Short-term debt — 45,000 — — — 45,000 Current portion of long-term debt — 350,021 — 53,054 — 403,075 Accrued interest payable — 40,206 — 26 — 40,232 Accrued liabilities 720 19,929 11,434 23,903 — 55,986 Taxes other than income tax 8 5,867 3,819 7,015 — 16,709 Income tax payable — — 2 881 (36 ) 847 Intercompany payable 489,002 — 1,182,082 1,417,639 (3,088,723 ) — Total current liabilities 496,060 482,087 1,202,910 1,562,219 (3,088,759 ) 654,517 Long-term debt — 3,073,864 — — — 3,073,864 Deferred income tax liability — 1,862 13 20,988 — 22,863 Other long-term liabilities — 43,538 10,973 52,520 — 107,031 Total partners’ equity 2,590,332 1,715,934 842,706 2,579,385 (5,227,308 ) 2,501,049 Total liabilities and partners’ equity $ 3,086,392 $ 5,317,285 $ 2,056,602 $ 4,215,112 $ (8,316,067 ) $ 6,359,324 Condensed Consolidating Balance Sheets December 31, 2016 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Assets Cash and cash equivalents $ 870 $ 5 $ — $ 35,067 $ — $ 35,942 Receivables, net — 3,040 — 167,570 — 170,610 Inventories — 2,216 2,005 33,724 — 37,945 Other current assets 61 120,350 1,829 10,446 — 132,686 Intercompany receivable — 1,308,415 — 57,785 (1,366,200 ) — Total current assets 931 1,434,026 3,834 304,592 (1,366,200 ) 377,183 Property, plant and equipment, net — 1,935,172 589,139 1,197,972 — 3,722,283 Intangible assets, net — 71,033 — 56,050 — 127,083 Goodwill — 149,453 170,652 376,532 — 696,637 Investment in wholly owned subsidiaries 1,964,736 34,778 1,221,717 874,649 (4,095,880 ) — Deferred income tax asset — — — 2,051 — 2,051 Other long-term assets, net 1,255 63,586 28,587 11,880 — 105,308 Total assets $ 1,966,922 $ 3,688,048 $ 2,013,929 $ 2,823,726 $ (5,462,080 ) $ 5,030,545 Liabilities and Partners’ Equity Accounts payable $ 2,436 $ 24,272 $ 7,124 $ 84,854 $ — $ 118,686 Short-term debt — 54,000 — — — 54,000 Accrued interest payable — 34,008 — 22 — 34,030 Accrued liabilities 1,070 7,118 10,766 41,531 — 60,485 Taxes other than income tax 125 6,854 3,253 5,453 — 15,685 Income tax payable — 1,326 5 5,179 — 6,510 Intercompany payable 257,497 — 1,108,703 — (1,366,200 ) — Total current liabilities 261,128 127,578 1,129,851 137,039 (1,366,200 ) 289,396 Long-term debt — 2,956,338 — 58,026 — 3,014,364 Deferred income tax liability — 1,862 13 20,329 — 22,204 Other long-term liabilities — 34,358 9,436 49,170 — 92,964 Total partners’ equity 1,705,794 567,912 874,629 2,559,162 (4,095,880 ) 1,611,617 Total liabilities and partners’ equity $ 1,966,922 $ 3,688,048 $ 2,013,929 $ 2,823,726 $ (5,462,080 ) $ 5,030,545
Condensed Consolidating Statements of Comprehensive Income (Loss) [Table Text Block]	Condensed Consolidating Statements of Comprehensive Income (Loss) For the Three Months Ended June 30, 2017 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 128,895 $ 50,577 $ 256,363 $ (347 ) $ 435,488 Costs and expenses 486 83,096 37,781 241,068 (347 ) 362,084 Operating (loss) income (486 ) 45,799 12,796 15,295 — 73,404 Equity in earnings (loss) of subsidiaries 26,732 (7,177 ) 22,746 34,141 (76,442 ) — Interest income (expense), net 4 (46,390 ) (1,401 ) 2,175 — (45,612 ) Other income, net — 62 3 23 — 88 Income (loss) before income tax (benefit) expense 26,250 (7,706 ) 34,144 51,634 (76,442 ) 27,880 Income tax (benefit) expense — (365 ) 1 1,994 — 1,630 Net income (loss) $ 26,250 $ (7,341 ) $ 34,143 $ 49,640 $ (76,442 ) $ 26,250 Comprehensive income (loss) $ 26,250 $ (13,592 ) $ 34,143 $ 57,022 $ (76,442 ) $ 27,381 Condensed Consolidating Statements of Comprehensive Income (Loss) For the Three Months Ended June 30, 2016 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 125,562 $ 58,129 $ 254,489 $ (376 ) $ 437,804 Costs and expenses 434 73,505 35,986 237,038 (376 ) 346,587 Operating (loss) income (434 ) 52,057 22,143 17,451 — 91,217 Equity in earnings (loss) of subsidiaries 52,929 (2,203 ) 20,171 44,346 (115,243 ) — Interest (expense) income, net — (41,155 ) 2,026 549 4,351 (34,229 ) Other income (expense), net 22 21 7 (251 ) — (201 ) Income before income tax expense 52,517 8,720 44,347 62,095 (110,892 ) 56,787 Income tax expense — 347 3 3,920 — 4,270 Net income $ 52,517 $ 8,373 $ 44,344 $ 58,175 $ (110,892 ) $ 52,517 Comprehensive income (loss) $ 52,517 $ (9,669 ) $ 44,344 $ 52,878 $ (110,892 ) $ 29,178 Condensed Consolidating Statements of Comprehensive Income (Loss) For the Six Months Ended June 30, 2017 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 252,524 $ 102,818 $ 568,210 $ (634 ) $ 922,918 Costs and expenses 995 159,418 67,587 525,009 (634 ) 752,375 Operating (loss) income (995 ) 93,106 35,231 43,201 — 170,543 Equity in earnings (loss) of subsidiaries 85,177 (6,067 ) 48,961 81,494 (209,565 ) — Interest income (expense), net 8 (83,304 ) (2,705 ) 3,975 — (82,026 ) Other income, net — 83 9 136 — 228 Income before income tax (benefit) expense 84,190 3,818 81,496 128,806 (209,565 ) 88,745 Income tax (benefit) expense — (34 ) 2 4,587 — 4,555 Net income $ 84,190 $ 3,852 $ 81,494 $ 124,219 $ (209,565 ) $ 84,190 Comprehensive income (loss) $ 84,190 $ (561 ) $ 81,494 $ 133,526 $ (209,565 ) $ 89,084 Condensed Consolidating Statements of Comprehensive Income (Loss) For the Six Months Ended June 30, 2016 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Revenues $ — $ 252,140 $ 106,114 $ 485,965 $ (712 ) $ 843,507 Costs and expenses 952 142,396 67,001 448,088 (712 ) 657,725 Operating (loss) income (952 ) 109,744 39,113 37,877 — 185,782 Equity in earnings (loss) of subsidiaries 110,851 (5,318 ) 45,454 88,089 (239,076 ) — Interest (expense) income, net — (80,787 ) 3,534 8,901 — (68,352 ) Other income (expense), net 22 22 (10 ) (406 ) — (372 ) Income before income tax expense 109,921 23,661 88,091 134,461 (239,076 ) 117,058 Income tax expense 3 693 5 6,439 — 7,140 Net income $ 109,918 $ 22,968 $ 88,086 $ 128,022 $ (239,076 ) $ 109,918 Comprehensive income (loss) $ 109,918 $ (22,830 ) $ 88,086 $ 135,703 $ (239,076 ) $ 71,801
Condensed Consolidating Statements of Cash Flows [Text Block]	Condensed Consolidating Statements of Cash Flows For the Six Months Ended June 30, 2017 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Net cash provided by operating activities $ 225,566 $ 85,203 $ 45,790 $ 192,692 $ (340,263 ) $ 208,988 Cash flows from investing activities: Capital expenditures — (19,639 ) (5,588 ) (83,622 ) — (108,849 ) Change in accounts payable related to capital expenditures — (2,823 ) (35 ) 9,709 — 6,851 Acquisitions — — — (1,476,719 ) — (1,476,719 ) Proceeds from sale or disposition of assets — 1,898 12 56 — 1,966 Investment in subsidiaries (1,262,000 ) — — (126 ) 1,262,126 — Proceeds from Axeon term loan — 110,000 — — — 110,000 Net cash (used in) provided by investing activities (1,262,000 ) 89,436 (5,611 ) (1,550,702 ) 1,262,126 (1,466,751 ) Cash flows from financing activities: Debt borrowings — 1,536,761 — 65,400 — 1,602,161 Debt repayments — (1,625,739 ) — (70,500 ) — (1,696,239 ) Note offering, net of issuance costs — 543,313 — — — 543,313 Issuance of preferred units, net of issuance costs 371,802 — — — — 371,802 Issuance of common units, net of issuance costs 643,858 — — — — 643,858 General partner contribution 13,597 — — — — 13,597 Distributions to preferred unitholders (10,696 ) (5,348 ) (5,348 ) (5,348 ) 16,044 (10,696 ) Distributions to common unitholders and general partner (216,139 ) (108,070 ) (108,069 ) (108,080 ) 324,219 (216,139 ) Contributions from affiliates — 1,262,000 — 126 (1,262,126 ) — Net intercompany activity 236,622 (1,778,816 ) 73,237 1,468,957 — — Other, net (2,613 ) 1,319 1 (1 ) — (1,294 ) Net cash provided by (used in) financing activities 1,036,431 (174,580 ) (40,179 ) 1,350,554 (921,863 ) 1,250,363 Effect of foreign exchange rate changes on cash — — — 649 — 649 Net (decrease) increase in cash and cash equivalents (3 ) 59 — (6,807 ) — (6,751 ) Cash and cash equivalents as of the beginning of the period 870 5 — 35,067 — 35,942 Cash and cash equivalents as of the end of the period $ 867 $ 64 $ — $ 28,260 $ — $ 29,191 Condensed Consolidating Statements of Cash Flows For the Six Months Ended June 30, 2016 (Thousands of Dollars) NuStar Energy NuStar Logistics NuPOP Non-Guarantor Subsidiaries Eliminations Consolidated Net cash provided by operating activities $ 194,793 $ 58,160 $ 79,728 $ 201,026 $ (318,674 ) $ 215,033 Cash flows from investing activities: Capital expenditures — (47,672 ) (19,474 ) (28,215 ) — (95,361 ) Change in accounts payable related to capital expenditures — (12,230 ) 3,357 (3,801 ) — (12,674 ) Net cash used in investing activities — (59,902 ) (16,117 ) (32,016 ) — (108,035 ) Cash flows from financing activities: Debt borrowings — 610,504 — 17,400 — 627,904 Debt repayments — (532,992 ) — (14,200 ) — (547,192 ) Distributions to common unitholders and general partner (196,102 ) (98,051 ) (98,051 ) (98,062 ) 294,164 (196,102 ) Distributions to affiliates — — — (24,510 ) 24,510 — Net intercompany activity 1,755 24,561 34,440 (60,756 ) — — Other, net (668 ) (2,281 ) — (8,891 ) — (11,840 ) Net cash (used in) provided by financing activities (195,015 ) 1,741 (63,611 ) (189,019 ) 318,674 (127,230 ) Effect of foreign exchange rate changes on cash — — — 4,389 — 4,389 Net decrease in cash and cash equivalents (222 ) (1 ) — (15,620 ) — (15,843 ) Cash and cash equivalents as of the beginning of the period 885 4 — 117,973 — 118,862 Cash and cash equivalents as of the end of the period $ 663 $ 3 $ — $ 102,353 $ — $ 103,019

ORGANIZATION AND BASIS OF PRE29

ORGANIZATION AND BASIS OF PRESENTATION Narrative (Details) $ in Thousands	May 04, 2017USD ($)	Feb. 22, 2017USD ($)	Jun. 30, 2017USD ($)shares	Jun. 30, 2017USD ($)shares	Jun. 30, 2016USD ($)	Dec. 31, 2016USD ($)	Feb. 26, 2014USD ($)
Organization and Operations [Abstract]
Common limited partner ownership interest held by general partner			11.00%	11.00%
Number of business segments				3
Class of Stock [Line Items]
Net proceeds from issuance of units				$ 1,029,257
Financing Receivable, Impaired [Line Items]
Cash collection on Axeon Term Loan				110,000	$ 0
Debt Instrument [Line Items]
Proceeds from note offering, net of issuance costs				$ 543,313	$ 0
Common Limited Partner [Member]
Class of Stock [Line Items]
Issuance of units (units) | shares			14,375,000	14,375,000
Proceeds from common unit issuance including general partner contribution			$ 657,500
Series B Preferred Limited Partner [Member]
Class of Stock [Line Items]
Issuance of units (units) | shares			15,400,000	15,400,000
Preferred units distribution percentage			7.625%
Net proceeds from issuance of units			$ 371,800
Logistics Notes Due 2027 [Member]
Debt Instrument [Line Items]
Senior notes issued			$ 550,000	$ 550,000
Stated interest rate			5.625%	5.625%
Proceeds from note offering, net of issuance costs			$ 543,300
Axeon [Member]
Financing Receivable, Impaired [Line Items]
Axeon Term Loan Receivable							$ 190,000
Maximum amount of guarantees						$ 125,000
Cash collection on Axeon Term Loan		$ 110,000
Navigator Acquisition [Member]
Business Acquisition [Line Items]
Purchase price of Navigator Acquisition	$ 1,500,000

ACQUISITIONS Narrative (Details

ACQUISITIONS Narrative (Details) - Navigator Acquisition [Member] $ in Billions	May 04, 2017USD ($)
Business Acquisition [Line Items]
Purchase price of Navigator Acquisition	$ 1.5
Description of Navigator Acquisition	We acquired crude oil transportation, pipeline gathering and storage assets located in the Midland Basin of West Texas consisting of: (i) more than 500 miles of crude oil gathering and transportation pipelines with approximately 92,000 barrels per day ship-or-pay volume commitments and deliverability of approximately 412,000 barrels per day; (ii) a pipeline gathering system with more than 200 connected producer tank batteries capable of more than 400,000 barrels per day of pumping capacity covering over 500,000 dedicated acres with fixed fee contracts; and (iii) approximately 1.0 million barrels of crude oil storage capacity with 440,000 barrels contracted to third parties. We collectively refer to the acquired assets as our Permian Crude System. The assets acquired are included in our pipeline segment.

ACQUISITIONS Table 1 (Details)

ACQUISITIONS Table 1 (Details) - USD ($) $ in Thousands	May 04, 2017	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill		$ 1,023,359		$ 696,637
Cash disbursed at closing		$ 1,476,719	$ 0
Navigator Acquisition [Member]
Business Acquisition [Line Items]
Accounts receivable	$ 4,916
Other current assets	2,476
Property, plant and equipment, net	396,603
Intangible assets	750,000
Goodwill	326,722
Other long-term assets, net	2,125
Current liabilities	(26,971)
Preliminary purchase price allocation, net of cash acquired	1,455,871
Pending closing adjustment	20,848
Cash disbursed at closing	$ 1,476,719

ACQUISITIONS Narrative 2 (Detai

ACQUISITIONS Narrative 2 (Details) - USD ($) $ in Thousands	May 04, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Business Acquisition [Line Items]
Revenues		$ 435,488	$ 437,804	$ 922,918	$ 843,507
Operating (loss) income		$ 73,404	$ 91,217	170,543	$ 185,782
Net proceeds from issuance of units				$ 1,029,257
General partner ownership interest		2.00%	2.00%	2.00%	2.00%
Navigator Acquisition [Member]
Business Acquisition [Line Items]
Intangible assets, weighted average useful life (years)	20 years
Revenues		$ 9,500
Operating (loss) income		$ (3,400)
Business acquisition, transaction costs	$ 14,000
Navigator Acquisition [Member] | General and administrative expense
Business Acquisition [Line Items]
Business acquisition, transaction costs	10,200
Navigator Acquisition [Member] | Interest expense, net
Business Acquisition [Line Items]
Business acquisition, transaction costs	$ 3,700
Common Limited Partner [Member]
Business Acquisition [Line Items]
Issuance of units (units)		14,375,000		14,375,000
General Partner [Member]
Business Acquisition [Line Items]
Net proceeds from issuance of units		$ 13,600		$ 13,600
General partner ownership interest		2.00%		2.00%
Series B Preferred Limited Partner [Member]
Business Acquisition [Line Items]
Issuance of units (units)		15,400,000		15,400,000
Net proceeds from issuance of units		$ 371,800
Logistics Notes Due 2027 [Member]
Business Acquisition [Line Items]
Senior notes issued		$ 550,000		$ 550,000
Stated interest rate		5.625%		5.625%

ACQUISITIONS Table 2 (Details)

ACQUISITIONS Table 2 (Details) - Navigator Acquisition [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Business Acquisition [Line Items]
Revenues	$ 439,933	$ 443,314	$ 937,317	$ 852,169
Net income	$ 21,211	$ 33,378	$ 63,659	$ 70,118
Basic net income per common unit	$ (0.03)	$ 0.15	$ 0.16	$ 0.34
Diluted net income per common unit	$ (0.03)	$ 0.15	$ 0.16	$ 0.34

ACQUISITIONS Narrative 3 (Detai

ACQUISITIONS Narrative 3 (Details) $ in Millions	May 04, 2017USD ($)
Navigator Acquisition [Member]
Business Acquisition [Line Items]
Business acquisition, transaction costs	$ 14

DEBT Narrative (Details)

DEBT Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Debt Instrument [Line Items]
Proceeds from note offering, net of issuance costs		$ 543,313	$ 0
Long-term debt	$ 3,476,939	3,476,939		$ 3,014,364
Current portion of long-term debt	$ 403,075	$ 403,075		$ 0
Logistics Notes Due 2027 [Member]
Debt Instrument [Line Items]
Stated interest rate	5.625%	5.625%
Proceeds from note offering, net of issuance costs	$ 543,300
Senior notes issued	550,000	$ 550,000
Redemption description		If we undergo a change of control, followed by a ratings decline within 60 days of a change of control, each holder of the 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, plus any accrued and unpaid interest to the date of repurchase.
$1.5 billion revolving credit agreement
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,500,000	$ 1,500,000
Term		5 years
Line of credit facility, decrease, net		$ 74,200
Interest rate at period end	2.80%	2.80%
Long-term debt	$ 764,800	$ 764,800
Covenant terms		our consolidated debt coverage ratio (as defined in the Revolving Credit Agreement) could not exceed 5.50-to-1.00 as a result of the Navigator Acquisition.
Letters of credit issued	7,700	$ 7,700
Current remaining borrowing capacity	727,500	727,500
GoZone Bonds
Debt Instrument [Line Items]
Long-term debt	$ 365,400	$ 365,400
Interest rate at period end	0.90%	0.90%
Amount received from trustee		$ 0
Amount remaining in trust	$ 42,400	42,400
Receivables Financing Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity	125,000	$ 125,000
Borrowing capacity, description		The amount available for borrowing is based on the availability of eligible receivables and other customary factors and conditions.
Maturity date description		The Securitization Program has an initial termination date of June 15, 2018, with the option to renew for additional 364-day periods thereafter.
Collateral amount	81,700	$ 81,700
Current portion of long-term debt	$ 53,300	$ 53,300

COMMITMENTS AND CONTINGENCIES N

COMMITMENTS AND CONTINGENCIES Narrative 1 (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Loss contingency accrual, at carrying value	$ 1.7	$ 0

FAIR VALUE MEASUREMENTS Table 1

FAIR VALUE MEASUREMENTS Table 1 (Details) - Recurring Fair Value Measurements - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets:
Total assets	$ 5,249	$ 3,020
Liabilities:
Total liabilities	(12,741)	(10,491)
Fair Value Level 1
Assets:
Total assets	5,249	1,551
Liabilities:
Total liabilities	(3,482)	(6,464)
Fair Value Level 2
Assets:
Total assets	0	1,469
Liabilities:
Total liabilities	(9,259)	(2,797)
Fair Value Level 3
Assets:
Total assets	0	0
Liabilities:
Total liabilities	0	(1,230)
Other current assets
Assets:
Product imbalances - asset	5,249	1,551
Commodity derivatives - assets		155
Other current assets | Fair Value Level 1
Assets:
Product imbalances - asset	5,249	1,551
Commodity derivatives - assets		0
Other current assets | Fair Value Level 2
Assets:
Product imbalances - asset	0	0
Commodity derivatives - assets		155
Other current assets | Fair Value Level 3
Assets:
Product imbalances - asset	0	0
Commodity derivatives - assets		0
Other long-term assets, net
Assets:
Interest rate swaps - assets		1,314
Other long-term assets, net | Fair Value Level 1
Assets:
Interest rate swaps - assets		0
Other long-term assets, net | Fair Value Level 2
Assets:
Interest rate swaps - assets		1,314
Other long-term assets, net | Fair Value Level 3
Assets:
Interest rate swaps - assets		0
Accrued liabilities
Liabilities:
Product imbalances - liability	(3,031)	(1,577)
Commodity derivatives - liabilities	(451)	(5,052)
Interest rate swaps - liabilities	(6,392)
Accrued liabilities | Fair Value Level 1
Liabilities:
Product imbalances - liability	(3,031)	(1,577)
Commodity derivatives - liabilities	(451)	(4,887)
Interest rate swaps - liabilities	0
Accrued liabilities | Fair Value Level 2
Liabilities:
Product imbalances - liability	0	0
Commodity derivatives - liabilities	0	(165)
Interest rate swaps - liabilities	(6,392)
Accrued liabilities | Fair Value Level 3
Liabilities:
Product imbalances - liability	0	0
Commodity derivatives - liabilities	0	0
Interest rate swaps - liabilities	0
Other long-term liabilities
Liabilities:
Guarantee liability		(1,230)
Interest rate swaps - liabilities	(2,867)	(2,632)
Other long-term liabilities | Fair Value Level 1
Liabilities:
Guarantee liability		0
Interest rate swaps - liabilities	0	0
Other long-term liabilities | Fair Value Level 2
Liabilities:
Guarantee liability		0
Interest rate swaps - liabilities	(2,867)	(2,632)
Other long-term liabilities | Fair Value Level 3
Liabilities:
Guarantee liability		(1,230)
Interest rate swaps - liabilities	$ 0	$ 0

FAIR VALUE MEASUREMENTS Narrati

FAIR VALUE MEASUREMENTS Narrative (Details) $ in Millions	Dec. 31, 2016USD ($)	Feb. 26, 2014
Axeon [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Maximum amount of guarantees	$ 125
Axeon [Member] | Financial Guarantee [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Amount of guarantees provided	$ 54.1
Number of guarantees with unlimited exposure	1
Axeon [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Ownership percentage of entity sold		50.00%

FAIR VALUE MEASUREMENTS Table 2

FAIR VALUE MEASUREMENTS Table 2 (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value and Carrying Value of Debt and Note Receivable from Counterparty [Line Items]
Fair value, long-term debt	$ 3,591,708	$ 3,084,762
Carrying amount, long-term debt	$ 3,476,939	3,014,364
Axeon [Member]
Fair Value and Carrying Value of Debt and Note Receivable from Counterparty [Line Items]
Fair value, Axeon Term Loan		110,000
Carrying amount, Axeon Term Loan		$ 110,000

FAIR VALUE MEASUREMENTS Narra40

FAIR VALUE MEASUREMENTS Narrative 2 (Details) - USD ($) $ in Thousands	Feb. 22, 2017	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Cash collection on Axeon Term Loan		$ 110,000	$ 0
Axeon [Member]
Financing Receivable, Impaired [Line Items]
Cash collection on Axeon Term Loan	$ 110,000
Carrying amount, Axeon Term Loan				$ 110,000

DERIVATIVES AND RISK MANAGEME41

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Narrative (Details) bbl in Millions	Jun. 30, 2017USD ($)bbl	Dec. 31, 2016USD ($)bbl	Jun. 30, 2017USD ($)
Derivative [Line Items]
Margin deposit	$ 300,000	$ 1,800,000	$ 300,000
Interest rate swaps | Cash Flow Hedges
Derivative [Line Items]
Interest rate swaps interest rate received			receive a rate based on the three-month USD LIBOR
Notional amount of forward-starting interest rate swaps	$ 600,000,000	$ 600,000,000	$ 600,000,000
Commodity contracts
Derivative [Line Items]
Notional amount of commodity contracts, volume (in barrels) | bbl	2.3	4.7

DERIVATIVES AND RISK MANAGEME42

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Table 1 (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value
Asset Derivatives	$ 1,549	$ 10,851
Liability Derivatives	(11,259)	(17,066)
Designated as Hedging Instruments
Derivatives, Fair Value
Asset Derivatives	162	1,458
Liability Derivatives	(9,447)	(6,198)
Designated as Hedging Instruments | Commodity contracts | Accrued liabilities
Derivatives, Fair Value
Asset Derivatives	162	144
Liability Derivatives	(188)	(3,566)
Designated as Hedging Instruments | Interest rate swaps | Other long-term assets, net
Derivatives, Fair Value
Asset Derivatives	0	1,314
Liability Derivatives	0	0
Designated as Hedging Instruments | Interest rate swaps | Accrued liabilities
Derivatives, Fair Value
Asset Derivatives	0	0
Liability Derivatives	(6,392)	0
Designated as Hedging Instruments | Interest rate swaps | Other long-term liabilities
Derivatives, Fair Value
Asset Derivatives	0	0
Liability Derivatives	(2,867)	(2,632)
Not Designated as Hedging Instruments
Derivatives, Fair Value
Asset Derivatives	1,387	9,393
Liability Derivatives	(1,812)	(10,868)
Not Designated as Hedging Instruments | Commodity contracts | Other current assets
Derivatives, Fair Value
Asset Derivatives	0	265
Liability Derivatives	0	(110)
Not Designated as Hedging Instruments | Commodity contracts | Accrued liabilities
Derivatives, Fair Value
Asset Derivatives	1,387	9,128
Liability Derivatives	$ (1,812)	$ (10,758)

DERIVATIVES AND RISK MANAGEME43

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Table 2 (Details) - Commodity contracts - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Derivative Assets and Liabilities Eligible for Offset, Net [Line Items]
Net amounts of assets presented in the consolidated balance sheets	$ 0	$ 155
Net amounts of liabilities presented in the consolidated balance sheets	$ (451)	$ (5,052)

DERIVATIVES AND RISK MANAGEME44

DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Table 3 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative Instruments, Gain (Loss)
Gain (loss) to be reclassified during next 12 months, forward-starting interest rate swaps	$ (5,800)		$ (5,800)
Designated as Hedging Instruments | Fair Value Hedges | Commodity contracts | Cost of product sales
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income on derivative	364	$ (5,792)	2,461	$ (6,804)
Gain (loss) recognized in income on hedged item	(313)	6,938	(2,147)	9,804
Gain (loss) recognized in income for ineffective portion	51	1,146	314	3,000
Designated as Hedging Instruments | Cash Flow Hedges | Interest rate swaps | Other comprehensive income
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in other comprehensive income on derivative (effective portion)	(7,980)	(20,200)	(7,941)	(50,178)
Designated as Hedging Instruments | Cash Flow Hedges | Interest rate swaps | Interest expense, net
Derivative Instruments, Gain (Loss)
Gain (loss) reclassified from AOCI into interest expense, net (effective portion)	(1,729)	(2,158)	(3,528)	(4,380)
Not Designated as Hedging Instruments | Commodity contracts | Cost of product sales
Derivative Instruments, Gain (Loss)
Gain (loss) recognized in income on derivative	$ 52	$ (724)	$ (86)	$ (4)

RELATED PARTY TRANSACTIONS Narr

RELATED PARTY TRANSACTIONS Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Related Party Transactions [Abstract]
Related party operating expenses	$ 0	$ 0	$ 0	$ 21,681
Related party general and administrative expenses	$ 0	$ 0	$ 0	$ 10,493
Administrative fees, description			The Amended GP Services Agreement provides that we will furnish administrative services necessary to conduct the business of NuStar GP Holdings. NuStar GP Holdings will compensate us for these services through an annual fee of $1.0 million, subject to adjustment based on the annual merit increase percentage applicable to our employees for the most recently completed fiscal year and for changes in level of service. The Amended GP Services Agreement will terminate on March 1, 2020 and will automatically renew for successive two-year terms, unless terminated by either party.

EMPLOYEE BENEFIT PLANS Table 1

EMPLOYEE BENEFIT PLANS Table 1 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Pension Plans (The Pension Plan and Excess Pension Plan)
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2,239	$ 1,926	$ 4,478	$ 3,852
Interest cost	1,127	1,006	2,254	2,012
Expected return on assets	(1,602)	(1,351)	(3,205)	(2,703)
Amortization of prior service credit	(516)	(516)	(1,031)	(1,033)
Amortization of net loss	371	273	742	546
Net periodic benefit cost (income)	1,619	1,338	3,238	2,674
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	113	105	226	210
Interest cost	108	100	216	200
Expected return on assets	0	0	0	0
Amortization of prior service credit	(286)	(286)	(572)	(572)
Amortization of net loss	48	45	96	90
Net periodic benefit cost (income)	$ (17)	$ (36)	$ (34)	$ (72)

PARTNERS' EQUITY Narrative 1 (D

PARTNERS' EQUITY Narrative 1 (Details) $ in Millions	3 Months Ended
	Jun. 30, 2017USD ($)
Partners' Capital Notes [Abstract]
Incentive distribution waiver	$ 22
Number of periods covered by waiver	10

PARTNERS' EQUITY Narrative 2 (D

PARTNERS' EQUITY Narrative 2 (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Apr. 18, 2017
Class of Stock [Line Items]
Net proceeds from issuance of units			$ 1,029,257
General partner ownership interest	2.00%	2.00%	2.00%	2.00%
Common Limited Partner [Member]
Class of Stock [Line Items]
Issuance of units (units)	14,375,000		14,375,000
Units issued, price per unit					$ 46.35
Proceeds from common unit issuance including general partner contribution	$ 657,500
General Partner [Member]
Class of Stock [Line Items]
Net proceeds from issuance of units	$ 13,600		$ 13,600
General partner ownership interest	2.00%		2.00%

PARTNERS' EQUITY Narrative 3 (D

PARTNERS' EQUITY Narrative 3 (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Apr. 28, 2017
Class of Stock [Line Items]
Net proceeds from issuance of units		$ 1,029,257
Series B Preferred Limited Partner [Member]
Class of Stock [Line Items]
Issuance of units (units)	15,400,000	15,400,000
Preferred units distribution percentage	7.625%
Preferred units liquidation preference	$ 25	$ 25
Per unit distribution	$ 1.90625
Units issued, price per unit			$ 25
Net proceeds from issuance of units	$ 371,800
Preferred unit, distribution payment rate, variable description	three-month LIBOR plus a spread of 5.643%
Preferred units, description	At any time on or after June 15, 2022, we may redeem our Series B Preferred Units, in whole or in part, at a redemption price of $25.00 per unit plus an amount equal to all accumulated and unpaid distributions to, but not including, the date of redemption, whether or not declared. We may also redeem the Series B Preferred Units upon the occurrence of certain rating events or a change of control as defined in our partnership agreement. In the case of the latter instance, if we choose not to redeem the Series B Preferred Units, the preferred unitholders may have the ability to convert the Series B Preferred Units to common units at the then applicable conversion rate. Holders of the Series B Preferred Units have no voting rights except for certain exceptions set forth in our partnership agreement.

PARTNERS' EQUITY Table 1 (Detai

PARTNERS' EQUITY Table 1 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Increase (Decrease) in Partners' Capital [Roll Forward]
Balance as of January 1, 2017			$ 1,611,617
Net income	$ 26,250	$ 52,517	84,190	$ 109,918
Unit-based compensation expense			2,564
Other comprehensive income			4,894
Distributions to partners			(230,902)
Issuance of preferred and common units, including contribution from general partner			1,029,257
Other			(571)
Balance as of June 30, 2017	$ 2,501,049		$ 2,501,049

PARTNERS' EQUITY Table 2 (Detai

PARTNERS' EQUITY Table 2 (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2017	$ (94,177)
Other comprehensive income (loss)	4,894
Balance as of June 30, 2017	(89,283)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2017	(69,069)
Other comprehensive income (loss) before reclassification adjustments	10,072
Other comprehensive income (loss)	10,072
Balance as of June 30, 2017	(58,997)
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2017	(22,258)
Other comprehensive income (loss) before reclassification adjustments	(7,941)
Other comprehensive income (loss)	(4,413)
Balance as of June 30, 2017	(26,671)
Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2017	(2,850)
Other comprehensive income (loss) before reclassification adjustments	0
Other comprehensive income (loss)	(765)
Balance as of June 30, 2017	(3,615)
Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of January 1, 2017	(94,177)
Other comprehensive income (loss) before reclassification adjustments	2,131
Other comprehensive income (loss)	4,894
Balance as of June 30, 2017	(89,283)
Operating expense | Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	0
Operating expense | Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	0
Operating expense | Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	(572)
Operating expense | Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	(572)
General and administrative expense | Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	0
General and administrative expense | Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	0
General and administrative expense | Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	(193)
General and administrative expense | Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	(193)
Interest expense, net | Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	0
Interest expense, net | Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	3,528
Interest expense, net | Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	0
Interest expense, net | Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from accumulated other comprehensive income, current period, net of tax	$ 3,528

PARTNERS' EQUITY Narrative 4 (D

PARTNERS' EQUITY Narrative 4 (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
General partner ownership interest	2.00%	2.00%	2.00%	2.00%
Common Limited Partner [Member]
Common unitholders ownership interest			98.00%
General Partner [Member]
General partner ownership interest	2.00%		2.00%

PARTNERS' EQUITY Table 3 (Detai

PARTNERS' EQUITY Table 3 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net Income Allocation [Abstract]
Net income attributable to NuStar Energy L.P.	$ 26,250	$ 52,517	$ 84,190	$ 109,918
Less preferred limited partner interest	9,950	0	14,763	0
Less general partner incentive distribution	10,912	10,805	23,824	21,610
Net income after general partner incentive distribution and preferred limited partner interest	$ 5,388	$ 41,712	$ 45,603	$ 88,308
General partner interest allocation	2.00%	2.00%	2.00%	2.00%
General partner interest allocation of net income	$ 108	$ 834	$ 912	$ 1,766
General partner incentive distribution	10,912	10,805	23,824	21,610
Net income applicable to general partner	$ 11,020	$ 11,639	$ 24,736	$ 23,376

PARTNERS' EQUITY Table 4 (Detai

PARTNERS' EQUITY Table 4 (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Distributions Made to Common Limited Partners and General Partner [Line Items]
General partner interest	$ 2,302			$ 1,961	$ 4,645	$ 3,922
General partner incentive distribution	10,912			10,805	23,824	21,610
Total general partner distribution	13,214			12,766	28,469	25,532
Common limited partners’ distribution	101,869			85,285	203,782	170,570
Total cash distributions applicable to common limited partners and general partner	$ 115,083	$ 117,168	$ 98,971	$ 98,051	$ 232,251	$ 196,102
Common Limited Partner [Member]
Distributions Made to Common Limited Partners and General Partner [Line Items]
Cash distributions per unit applicable to common limited partners	$ 1.095	$ 1.095	$ 1.095	$ 1.095	$ 2.190	$ 2.190

PARTNERS' EQUITY Table 5 (Detai

PARTNERS' EQUITY Table 5 (Details) - USD ($) $ / shares in Units, $ in Thousands	Jul. 28, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Distribution Made to General and Common Limited Partners [Line Items]
Cash distributions applicable to common limited partners and general partner (distribution earned)		$ 115,083	$ 117,168	$ 98,971	$ 98,051	$ 232,251	$ 196,102
Distribution date of record (distribution earned)		Aug. 7, 2017	May 8, 2017	Feb. 8, 2017
Distribution payment date (distribution earned)		Aug. 11, 2017	May 12, 2017	Feb. 13, 2017
Subsequent Event [Member]
Distribution Made to General and Common Limited Partners [Line Items]
Distribution announcement date (distribution earned)	Jul. 28, 2017
Common Limited Partner [Member]
Distribution Made to General and Common Limited Partners [Line Items]
Cash distributions per unit applicable to common limited partners		$ 1.095	$ 1.095	$ 1.095	$ 1.095	$ 2.190	$ 2.190

PARTNERS' EQUITY Table 6 (Detai

PARTNERS' EQUITY Table 6 (Details) - USD ($) $ / shares in Units, $ in Thousands	Jul. 28, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Distribution Made to Limited Partner [Line Items]
Distribution date of record			Aug. 7, 2017	May 8, 2017	Feb. 8, 2017
Distribution payment date			Aug. 11, 2017	May 12, 2017	Feb. 13, 2017
Series A Preferred Limited Partner [Member]
Distribution Made to Limited Partner [Line Items]
Preferred unit distribution paid			$ 0.53125	$ 0.64930556
Cash distributions applicable to preferred limited partners			$ 4,813	$ 5,883
Distribution date of record			Jun. 1, 2017	Mar. 1, 2017
Distribution payment date			Jun. 15, 2017	Mar. 15, 2017
Subsequent Event [Member]
Distribution Made to Limited Partner [Line Items]
Distribution announcement date (distribution earned)	Jul. 28, 2017
Subsequent Event [Member] | Series A Preferred Limited Partner [Member]
Distribution Made to Limited Partner [Line Items]
Preferred unit distribution declared		$ 0.53125
Cash distributions applicable to preferred limited partners		$ 4,813
Distribution date of record		Sep. 1, 2017
Distribution payment date		Sep. 15, 2017
Subsequent Event [Member] | Series B Preferred Limited Partner [Member]
Distribution Made to Limited Partner [Line Items]
Preferred unit distribution declared		$ 0.725434028
Cash distributions applicable to preferred limited partners		$ 11,172
Distribution date of record		Sep. 1, 2017
Distribution payment date		Sep. 15, 2017

NET INCOME PER COMMON UNIT Tabl

NET INCOME PER COMMON UNIT Table (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Net income attributable to NuStar Energy L.P.	$ 26,250	$ 52,517	$ 84,190	$ 109,918
Less: Distributions to general partner (including incentive distribution rights)	13,214	12,766	28,469	25,532
Common limited partners’ distribution	101,869	85,285	203,782	170,570
Less: Distributions to preferred limited partners	9,950	0	14,763	0
Less: Distribution equivalents rights to restricted units	712	657	1,427	1,319
Distributions in excess of earnings	(99,495)	(46,191)	(164,251)	(87,503)
Net income attributable to common units:
Common limited partners’ distribution	101,869	85,285	203,782	170,570
Allocation of distributions in excess of earnings	(97,505)	(45,267)	(160,966)	(85,752)
Total	$ 4,364	$ 40,018	$ 42,816	$ 84,818
Basic weighted-average common units outstanding	90,345,469	77,886,219	84,526,506	77,886,148
Diluted common units outstanding:
Basic weighted-average common units outstanding	90,345,469	77,886,219	84,526,506	77,886,148
Effect of dilutive potential common units	0	53,060	0	57,554
Diluted weighted-average common units outstanding	90,345,469	77,939,279	84,526,506	77,943,702
Basic net income per common unit	$ 0.05	$ 0.52	$ 0.51	$ 1.09
Diluted net income per common unit	$ 0.05	$ 0.52	$ 0.51	$ 1.09

STATEMENTS OF CASH FLOWS Table

STATEMENTS OF CASH FLOWS Table 1 (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Decrease (increase) in current assets:
Accounts receivable	$ 48,875	$ (572)
Receivable from related party	231	0
Inventories	13,005	99
Other current assets	(2,388)	5,064
Increase (decrease) in current liabilities:
Accounts payable	(57,822)	(4,717)
Payable to related party, net	0	697
Accrued interest payable	6,234	(393)
Accrued liabilities	(14,703)	(12,321)
Taxes other than income tax	(3,094)	(348)
Income tax payable	(5,682)	(2,783)
Changes in current assets and current liabilities	$ (15,344)	$ (15,274)

STATEMENTS OF CASH FLOWS Tabl59

STATEMENTS OF CASH FLOWS Table 2 (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Statement of Cash Flows [Abstract]
Cash paid for interest, net of amount capitalized	$ 70,119	$ 70,280
Cash paid for income taxes, net of tax refunds received	$ 9,556	$ 8,826

SEGMENT INFORMATION Table 1 (De

SEGMENT INFORMATION Table 1 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Revenues	$ 435,488	$ 437,804	$ 922,918	$ 843,507
Operating income:
General and administrative expenses	33,604	22,657	58,199	46,442
Other depreciation and amortization expense	67,601	53,651	124,465	106,793
Operating income	73,404	91,217	170,543	185,782
Pipeline Segment
Revenues:
Revenues	126,740	121,575	247,980	240,448
Storage Segment
Revenues:
Revenues	158,559	151,874	305,990	304,273
Storage Segment | Third Party Revenue [Member]
Revenues:
Revenues	154,830	146,367	298,318	292,751
Storage Segment | Intersegment Revenue [Member]
Revenues:
Revenues	3,729	5,507	7,672	11,522
Fuels Marketing Segment
Revenues:
Revenues	153,918	169,862	376,620	310,308
Operating Segments [Member]
Operating income:
Operating income	109,207	116,008	233,134	236,513
Operating Segments [Member] | Pipeline Segment
Operating income:
Operating income	52,868	63,552	117,896	127,817
Operating Segments [Member] | Storage Segment
Operating income:
Operating income	56,049	51,063	109,808	108,076
Operating Segments [Member] | Fuels Marketing Segment
Operating income:
Operating income	289	1,392	5,429	619
Intersegment Eliminations [Member]
Revenues:
Revenues	(3,729)	(5,507)	(7,672)	(11,522)
Operating income:
Operating income	1	1	1	1
Corporate, Non-Segment [Member]
Operating income:
General and administrative expenses	33,604	22,657	58,199	46,442
Other depreciation and amortization expense	$ 2,199	$ 2,134	$ 4,392	$ 4,289

SEGMENT INFORMATION Table 2 (De

SEGMENT INFORMATION Table 2 (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Segment Information
Total assets	$ 6,359,324	$ 5,030,545
Operating Segments [Member]
Segment Information
Total assets	6,167,445	4,715,566
Operating Segments [Member] | Pipeline Segment
Segment Information
Total assets	3,458,700	2,024,633
Operating Segments [Member] | Storage Segment
Segment Information
Total assets	2,605,122	2,522,586
Operating Segments [Member] | Fuels Marketing Segment
Segment Information
Total assets	103,623	168,347
Operating Segments [Member] | Other partnership assets
Segment Information
Total assets	$ 191,879	$ 314,979

CONDENSED CONSOLIDATING FINAN62

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Table 1 (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents	$ 29,191	$ 35,942	$ 103,019	$ 118,862
Receivables, net	147,634	170,610
Inventories	25,772	37,945
Other current assets	28,265	132,686
Intercompany receivable	0	0
Total current assets	230,862	377,183
Property, plant and equipment, net	4,147,333	3,722,283
Intangible assets, net	857,616	127,083
Goodwill	1,023,359	696,637
Investment in wholly owned subsidiaries	0	0
Deferred income tax asset	1,359	2,051
Other long-term assets, net	98,795	105,308
Total assets	6,359,324	5,030,545
Liabilities and Partners' Equity
Accounts payable	92,668	118,686
Short-term debt	45,000	54,000
Current portion of long-term debt	403,075	0
Accrued interest payable	40,232	34,030
Accrued liabilities	55,986	60,485
Taxes other than income tax	16,709	15,685
Income tax payable	847	6,510
Intercompany payable	0	0
Total current liabilities	654,517	289,396
Long-term debt	3,073,864	3,014,364
Deferred income tax liability	22,863	22,204
Other long-term liabilities	107,031	92,964
Total partners' equity	2,501,049	1,611,617
Total liabilities and partners' equity	6,359,324	5,030,545
Eliminations
Assets
Cash and cash equivalents	0	0	0	0
Receivables, net	0	0
Inventories	0	0
Other current assets	(36)	0
Intercompany receivable	(3,088,723)	(1,366,200)
Total current assets	(3,088,759)	(1,366,200)
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Goodwill	0	0
Investment in wholly owned subsidiaries	(5,227,308)	(4,095,880)
Deferred income tax asset	0	0
Other long-term assets, net	0	0
Total assets	(8,316,067)	(5,462,080)
Liabilities and Partners' Equity
Accounts payable	0	0
Short-term debt	0	0
Current portion of long-term debt	0
Accrued interest payable	0	0
Accrued liabilities	0	0
Taxes other than income tax	0	0
Income tax payable	(36)	0
Intercompany payable	(3,088,723)	(1,366,200)
Total current liabilities	(3,088,759)	(1,366,200)
Long-term debt	0	0
Deferred income tax liability	0	0
Other long-term liabilities	0	0
Total partners' equity	(5,227,308)	(4,095,880)
Total liabilities and partners' equity	(8,316,067)	(5,462,080)
NuStar Energy
Assets
Cash and cash equivalents	867	870	663	885
Receivables, net	0	0
Inventories	0	0
Other current assets	69	61
Intercompany receivable	0	0
Total current assets	936	931
Property, plant and equipment, net	0	0
Intangible assets, net	0	0
Goodwill	0	0
Investment in wholly owned subsidiaries	3,085,078	1,964,736
Deferred income tax asset	0	0
Other long-term assets, net	378	1,255
Total assets	3,086,392	1,966,922
Liabilities and Partners' Equity
Accounts payable	6,330	2,436
Short-term debt	0	0
Current portion of long-term debt	0
Accrued interest payable	0	0
Accrued liabilities	720	1,070
Taxes other than income tax	8	125
Income tax payable	0	0
Intercompany payable	489,002	257,497
Total current liabilities	496,060	261,128
Long-term debt	0	0
Deferred income tax liability	0	0
Other long-term liabilities	0	0
Total partners' equity	2,590,332	1,705,794
Total liabilities and partners' equity	3,086,392	1,966,922
NuStar Logistics
Assets
Cash and cash equivalents	64	5	3	4
Receivables, net	93	3,040
Inventories	1,977	2,216
Other current assets	12,623	120,350
Intercompany receivable	3,088,723	1,308,415
Total current assets	3,103,480	1,434,026
Property, plant and equipment, net	1,911,890	1,935,172
Intangible assets, net	63,163	71,033
Goodwill	149,453	149,453
Investment in wholly owned subsidiaries	28,711	34,778
Deferred income tax asset	0	0
Other long-term assets, net	60,588	63,586
Total assets	5,317,285	3,688,048
Liabilities and Partners' Equity
Accounts payable	21,064	24,272
Short-term debt	45,000	54,000
Current portion of long-term debt	350,021
Accrued interest payable	40,206	34,008
Accrued liabilities	19,929	7,118
Taxes other than income tax	5,867	6,854
Income tax payable	0	1,326
Intercompany payable	0	0
Total current liabilities	482,087	127,578
Long-term debt	3,073,864	2,956,338
Deferred income tax liability	1,862	1,862
Other long-term liabilities	43,538	34,358
Total partners' equity	1,715,934	567,912
Total liabilities and partners' equity	5,317,285	3,688,048
NuPOP
Assets
Cash and cash equivalents	0	0	0	0
Receivables, net	0	0
Inventories	3,254	2,005
Other current assets	5,475	1,829
Intercompany receivable	0	0
Total current assets	8,729	3,834
Property, plant and equipment, net	578,504	589,139
Intangible assets, net	0	0
Goodwill	170,652	170,652
Investment in wholly owned subsidiaries	1,270,678	1,221,717
Deferred income tax asset	0	0
Other long-term assets, net	28,039	28,587
Total assets	2,056,602	2,013,929
Liabilities and Partners' Equity
Accounts payable	5,573	7,124
Short-term debt	0	0
Current portion of long-term debt	0
Accrued interest payable	0	0
Accrued liabilities	11,434	10,766
Taxes other than income tax	3,819	3,253
Income tax payable	2	5
Intercompany payable	1,182,082	1,108,703
Total current liabilities	1,202,910	1,129,851
Long-term debt	0	0
Deferred income tax liability	13	13
Other long-term liabilities	10,973	9,436
Total partners' equity	842,706	874,629
Total liabilities and partners' equity	2,056,602	2,013,929
Non-Guarantor Subsidiaries
Assets
Cash and cash equivalents	28,260	35,067	$ 102,353	$ 117,973
Receivables, net	147,541	167,570
Inventories	20,541	33,724
Other current assets	10,134	10,446
Intercompany receivable	0	57,785
Total current assets	206,476	304,592
Property, plant and equipment, net	1,656,939	1,197,972
Intangible assets, net	794,453	56,050
Goodwill	703,254	376,532
Investment in wholly owned subsidiaries	842,841	874,649
Deferred income tax asset	1,359	2,051
Other long-term assets, net	9,790	11,880
Total assets	4,215,112	2,823,726
Liabilities and Partners' Equity
Accounts payable	59,701	84,854
Short-term debt	0	0
Current portion of long-term debt	53,054
Accrued interest payable	26	22
Accrued liabilities	23,903	41,531
Taxes other than income tax	7,015	5,453
Income tax payable	881	5,179
Intercompany payable	1,417,639	0
Total current liabilities	1,562,219	137,039
Long-term debt	0	58,026
Deferred income tax liability	20,988	20,329
Other long-term liabilities	52,520	49,170
Total partners' equity	2,579,385	2,559,162
Total liabilities and partners' equity	$ 4,215,112	$ 2,823,726

CONDENSED CONSOLIDATING FINAN63

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Table 2 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Condensed Financial Statements, Captions [Line Items]
Revenues	$ 435,488	$ 437,804	$ 922,918	$ 843,507
Costs and expenses	362,084	346,587	752,375	657,725
Operating (loss) income	73,404	91,217	170,543	185,782
Equity in earnings (loss) of subsidiaries	0	0	0	0
Interest (expense) income, net	(45,612)	(34,229)	(82,026)	(68,352)
Other income (expense), net	88	(201)	228	(372)
Income before income tax expense	27,880	56,787	88,745	117,058
Income tax expense (benefit)	1,630	4,270	4,555	7,140
Net income	26,250	52,517	84,190	109,918
Comprehensive income (loss)	27,381	29,178	89,084	71,801
Eliminations
Condensed Financial Statements, Captions [Line Items]
Revenues	(347)	(376)	(634)	(712)
Costs and expenses	(347)	(376)	(634)	(712)
Operating (loss) income	0	0	0	0
Equity in earnings (loss) of subsidiaries	(76,442)	(115,243)	(209,565)	(239,076)
Interest (expense) income, net	0	4,351	0	0
Other income (expense), net	0	0	0	0
Income before income tax expense	(76,442)	(110,892)	(209,565)	(239,076)
Income tax expense (benefit)	0	0	0	0
Net income	(76,442)	(110,892)	(209,565)	(239,076)
Comprehensive income (loss)	(76,442)	(110,892)	(209,565)	(239,076)
NuStar Energy
Condensed Financial Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and expenses	486	434	995	952
Operating (loss) income	(486)	(434)	(995)	(952)
Equity in earnings (loss) of subsidiaries	26,732	52,929	85,177	110,851
Interest (expense) income, net	4	0	8	0
Other income (expense), net	0	22	0	22
Income before income tax expense	26,250	52,517	84,190	109,921
Income tax expense (benefit)	0	0	0	3
Net income	26,250	52,517	84,190	109,918
Comprehensive income (loss)	26,250	52,517	84,190	109,918
NuStar Logistics
Condensed Financial Statements, Captions [Line Items]
Revenues	128,895	125,562	252,524	252,140
Costs and expenses	83,096	73,505	159,418	142,396
Operating (loss) income	45,799	52,057	93,106	109,744
Equity in earnings (loss) of subsidiaries	(7,177)	(2,203)	(6,067)	(5,318)
Interest (expense) income, net	(46,390)	(41,155)	(83,304)	(80,787)
Other income (expense), net	62	21	83	22
Income before income tax expense	(7,706)	8,720	3,818	23,661
Income tax expense (benefit)	(365)	347	(34)	693
Net income	(7,341)	8,373	3,852	22,968
Comprehensive income (loss)	(13,592)	(9,669)	(561)	(22,830)
NuPOP
Condensed Financial Statements, Captions [Line Items]
Revenues	50,577	58,129	102,818	106,114
Costs and expenses	37,781	35,986	67,587	67,001
Operating (loss) income	12,796	22,143	35,231	39,113
Equity in earnings (loss) of subsidiaries	22,746	20,171	48,961	45,454
Interest (expense) income, net	(1,401)	2,026	(2,705)	3,534
Other income (expense), net	3	7	9	(10)
Income before income tax expense	34,144	44,347	81,496	88,091
Income tax expense (benefit)	1	3	2	5
Net income	34,143	44,344	81,494	88,086
Comprehensive income (loss)	34,143	44,344	81,494	88,086
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Revenues	256,363	254,489	568,210	485,965
Costs and expenses	241,068	237,038	525,009	448,088
Operating (loss) income	15,295	17,451	43,201	37,877
Equity in earnings (loss) of subsidiaries	34,141	44,346	81,494	88,089
Interest (expense) income, net	2,175	549	3,975	8,901
Other income (expense), net	23	(251)	136	(406)
Income before income tax expense	51,634	62,095	128,806	134,461
Income tax expense (benefit)	1,994	3,920	4,587	6,439
Net income	49,640	58,175	124,219	128,022
Comprehensive income (loss)	$ 57,022	$ 52,878	$ 133,526	$ 135,703

CONDENSED CONSOLIDATING FINAN64

CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Table 3 (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net cash provided by operating activities	$ 208,988	$ 215,033
Cash flows from investing activities:
Capital expenditures	(108,849)	(95,361)
Change in accounts payable related to capital expenditures	6,851	(12,674)
Acquisitions	(1,476,719)	0
Proceeds from sale or disposition of assets	1,966	0
Investment in subsidiaries	0
Proceeds from Axeon term loan	110,000	0
Net cash provided by (used in) investing activities	(1,466,751)	(108,035)
Cash flows from financing activities:
Debt borrowings	1,602,161	627,904
Debt repayments	(1,696,239)	(547,192)
Note offering, net of issuance costs	543,313	0
Issuance of preferred units, net of issuance costs	371,802	0
Issuance of common units, net of issuance costs	643,858	0
General partner contribution	13,597	0
Distributions to preferred unitholders	(10,696)	0
Distributions to common unitholders and general partner	(216,139)	(196,102)
Contributions from (distributions to) affiliates	0	0
Net intercompany activity	0	0
Other, net	(1,294)	(11,840)
Net cash provided by (used in) financing activities	1,250,363	(127,230)
Effect of foreign exchange rate changes on cash	649	4,389
Net increase (decrease) in cash and cash equivalents	(6,751)	(15,843)
Cash and cash equivalents as of the beginning of the period	35,942	118,862
Cash and cash equivalents as of the end of the period	29,191	103,019
Eliminations
Cash flows from operating activities:
Net cash provided by operating activities	(340,263)	(318,674)
Cash flows from investing activities:
Capital expenditures	0	0
Change in accounts payable related to capital expenditures	0	0
Acquisitions	0
Proceeds from sale or disposition of assets	0
Investment in subsidiaries	1,262,126
Proceeds from Axeon term loan	0
Net cash provided by (used in) investing activities	1,262,126	0
Cash flows from financing activities:
Debt borrowings	0	0
Debt repayments	0	0
Note offering, net of issuance costs	0
Issuance of preferred units, net of issuance costs	0
Issuance of common units, net of issuance costs	0
General partner contribution	0
Distributions to preferred unitholders	16,044
Distributions to common unitholders and general partner	324,219	294,164
Contributions from (distributions to) affiliates	(1,262,126)	24,510
Net intercompany activity	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	(921,863)	318,674
Effect of foreign exchange rate changes on cash	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents as of the beginning of the period	0	0
Cash and cash equivalents as of the end of the period	0	0
NuStar Energy
Cash flows from operating activities:
Net cash provided by operating activities	225,566	194,793
Cash flows from investing activities:
Capital expenditures	0	0
Change in accounts payable related to capital expenditures	0	0
Acquisitions	0
Proceeds from sale or disposition of assets	0
Investment in subsidiaries	(1,262,000)
Proceeds from Axeon term loan	0
Net cash provided by (used in) investing activities	(1,262,000)	0
Cash flows from financing activities:
Debt borrowings	0	0
Debt repayments	0	0
Note offering, net of issuance costs	0
Issuance of preferred units, net of issuance costs	371,802
Issuance of common units, net of issuance costs	643,858
General partner contribution	13,597
Distributions to preferred unitholders	(10,696)
Distributions to common unitholders and general partner	(216,139)	(196,102)
Contributions from (distributions to) affiliates	0	0
Net intercompany activity	236,622	1,755
Other, net	(2,613)	(668)
Net cash provided by (used in) financing activities	1,036,431	(195,015)
Effect of foreign exchange rate changes on cash	0	0
Net increase (decrease) in cash and cash equivalents	(3)	(222)
Cash and cash equivalents as of the beginning of the period	870	885
Cash and cash equivalents as of the end of the period	867	663
NuStar Logistics
Cash flows from operating activities:
Net cash provided by operating activities	85,203	58,160
Cash flows from investing activities:
Capital expenditures	(19,639)	(47,672)
Change in accounts payable related to capital expenditures	(2,823)	(12,230)
Acquisitions	0
Proceeds from sale or disposition of assets	1,898
Investment in subsidiaries	0
Proceeds from Axeon term loan	110,000
Net cash provided by (used in) investing activities	89,436	(59,902)
Cash flows from financing activities:
Debt borrowings	1,536,761	610,504
Debt repayments	(1,625,739)	(532,992)
Note offering, net of issuance costs	543,313
Issuance of preferred units, net of issuance costs	0
Issuance of common units, net of issuance costs	0
General partner contribution	0
Distributions to preferred unitholders	(5,348)
Distributions to common unitholders and general partner	(108,070)	(98,051)
Contributions from (distributions to) affiliates	1,262,000	0
Net intercompany activity	(1,778,816)	24,561
Other, net	1,319	(2,281)
Net cash provided by (used in) financing activities	(174,580)	1,741
Effect of foreign exchange rate changes on cash	0	0
Net increase (decrease) in cash and cash equivalents	59	(1)
Cash and cash equivalents as of the beginning of the period	5	4
Cash and cash equivalents as of the end of the period	64	3
NuPOP
Cash flows from operating activities:
Net cash provided by operating activities	45,790	79,728
Cash flows from investing activities:
Capital expenditures	(5,588)	(19,474)
Change in accounts payable related to capital expenditures	(35)	3,357
Acquisitions	0
Proceeds from sale or disposition of assets	12
Investment in subsidiaries	0
Proceeds from Axeon term loan	0
Net cash provided by (used in) investing activities	(5,611)	(16,117)
Cash flows from financing activities:
Debt borrowings	0	0
Debt repayments	0	0
Note offering, net of issuance costs	0
Issuance of preferred units, net of issuance costs	0
Issuance of common units, net of issuance costs	0
General partner contribution	0
Distributions to preferred unitholders	(5,348)
Distributions to common unitholders and general partner	(108,069)	(98,051)
Contributions from (distributions to) affiliates	0	0
Net intercompany activity	73,237	34,440
Other, net	1	0
Net cash provided by (used in) financing activities	(40,179)	(63,611)
Effect of foreign exchange rate changes on cash	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents as of the beginning of the period	0	0
Cash and cash equivalents as of the end of the period	0	0
Non-Guarantor Subsidiaries
Cash flows from operating activities:
Net cash provided by operating activities	192,692	201,026
Cash flows from investing activities:
Capital expenditures	(83,622)	(28,215)
Change in accounts payable related to capital expenditures	9,709	(3,801)
Acquisitions	(1,476,719)
Proceeds from sale or disposition of assets	56
Investment in subsidiaries	(126)
Proceeds from Axeon term loan	0
Net cash provided by (used in) investing activities	(1,550,702)	(32,016)
Cash flows from financing activities:
Debt borrowings	65,400	17,400
Debt repayments	(70,500)	(14,200)
Note offering, net of issuance costs	0
Issuance of preferred units, net of issuance costs	0
Issuance of common units, net of issuance costs	0
General partner contribution	0
Distributions to preferred unitholders	(5,348)
Distributions to common unitholders and general partner	(108,080)	(98,062)
Contributions from (distributions to) affiliates	126	(24,510)
Net intercompany activity	1,468,957	(60,756)
Other, net	(1)	(8,891)
Net cash provided by (used in) financing activities	1,350,554	(189,019)
Effect of foreign exchange rate changes on cash	649	4,389
Net increase (decrease) in cash and cash equivalents	(6,807)	(15,620)
Cash and cash equivalents as of the beginning of the period	35,067	117,973
Cash and cash equivalents as of the end of the period	$ 28,260	$ 102,353