Hess Midstream (HESM) 10-Q 2 Nov 23 2023 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2023	Oct. 31, 2023
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Trading Symbol	HESM
Entity Registrant Name	Hess Midstream LP
Entity Central Index Key	0001789832
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity File Number	001-39163
Entity Tax Identification Number	84-3211812
Entity Address, Address Line One	1501 McKinney Street
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77010
City Area Code	713
Local Phone Number	496-4200
Entity Common Stock, Shares Outstanding		68,358,493
Document Quarterly Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	DE
Title of 12(b) Security	Class A shares representing limited partner interests
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes

CONSOLIDATED BALANCE SHEETS (UN

CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Assets
Cash and cash equivalents	$ 3.3	$ 3.1
Accounts receivable-affiliate:
From contracts with customers	$ 122	$ 123
Accounts Receivable, after Allowance for Credit Loss, Current, Related Party, Type [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Other current assets	$ 12.4	$ 6.2
Total current assets	137.7	132.3
Equity investments	91.4	93.9
Property, plant and equipment, net	3,207.8	3,172.8
Long-term receivable—affiliate	0.4	0.7
Deferred tax asset	329	177.2
Other noncurrent assets	9.2	11.3
Total assets	3,775.5	3,588.2
Liabilities
Accounts payable—trade	27.7	35
Accounts payable-affiliate	$ 36.2	$ 27.7
Accounts Payable, Current, Related Party, Type [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Accrued liabilities	$ 89.2	$ 82.9
Current maturities of long-term debt	10	2.5
Other current liabilities	10.7	11.4
Total current liabilities	173.8	159.5
Long-term debt	3,138.3	2,883.1
Deferred tax liability	0.5	0.5
Other noncurrent liabilities	17.6	16.1
Total liabilities	3,330.2	3,059.2
Partners' capital
Total Class A and Class B partners' capital	367.4	245.1
Noncontrolling interest	77.9	283.9
Total partners' capital	445.3	529
Total liabilities and partners' capital	3,775.5	3,588.2
Class A Shares
Partners' capital
Common unitholders	$ 367.4	$ 245.1

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - shares	Sep. 30, 2023	Dec. 31, 2022
Class A Shares
Common units issued	68,358,493	44,002,846
Common units outstanding	68,358,493	44,002,846
Class B Shares
Common units issued	161,311,848	195,847,606
Common units outstanding	161,311,848	195,847,606

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues
Affiliate services	$ 361.3	$ 334.2	$ 986.6	$ 959.3
Type of Revenue [Extensible List]	us-gaap:ServiceMember	us-gaap:ServiceMember	us-gaap:ServiceMember	us-gaap:ServiceMember
Other income	$ 1.8	$ 0.6	$ 5.5	$ 1.3
Total revenues	363.1	334.8	992.1	960.6
Costs and expenses
Operating and maintenance expenses (exclusive of depreciation shown separately below)	89.4	79.6	225	213.9
Depreciation expense	47.7	45.5	142.1	134.9
General and administrative expenses	6	5.7	18.2	17
Total operating costs and expenses	143.1	130.8	385.3	365.8
Income from operations	220	204	606.8	594.8
Income from equity investments	2	2.8	5.3	4.2
Interest expense, net	45.8	39.9	131.2	108.6
Income before income tax expense	176.2	166.9	480.9	490.4
Income tax expense	11.4	7.5	26	19.6
Net income	164.8	159.4	454.9	470.8
Less: Net income attributable to noncontrolling interest	129.5	136.2	373.8	408.7
Net income attributable to Hess Midstream LP	$ 35.3	$ 23.2	$ 81.1	$ 62.1
Class A Shares
Net income attributable to Hess Midstream LP per Class A share:
Net income attributable to Hess Midstream LP per Class A share, Basic	$ 0.57	$ 0.53	$ 1.56	$ 1.54
Net income attributable to Hess Midstream LP per Class A share, Diluted	$ 0.57	$ 0.53	$ 1.54	$ 1.52
Weighted average Class A shares outstanding
Weighted average Class A shares outstanding, Basic	62.5	44	52.2	40.5
Weighted average Class A shares outstanding, Diluted	62.5	44.1	52.2	40.5

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (UNAUDITED) - USD ($) $ in Millions	Total	Limited Partner Class A Shares	Noncontrolling Interest
Balance, beginning of period at Dec. 31, 2021	$ 753.1	$ 204.1	$ 549
Net income	159.6	16.9	142.7
Equity-based compensation	0.5	0.5
Distributions to unitholders	(131)	(17.5)	(113.5)
Transaction costs	(0.4)	(0.1)	(0.3)
Balance, end of period at Mar. 31, 2022	781.8	203.9	577.9
Balance, beginning of period at Dec. 31, 2021	753.1	204.1	549
Net income	470.8
Balance, end of period at Sep. 30, 2022	513.9	247.8	266.1
Balance, beginning of period at Mar. 31, 2022	781.8	203.9	577.9
Net income	151.8	22	129.8
Equity-based compensation	0.4	0.4
Distributions to unitholders	(131.8)	(24.2)	(107.6)
Recognition of deferred tax asset	86.4	86.4
Sales of shares held by Sponsors		27	(27)
Class B unit repurchase	(400)	(66.6)	(333.4)
Transaction costs	(1.1)	(0.2)	(0.9)
Balance, end of period at Jun. 30, 2022	487.5	248.7	238.8
Net income	159.4	23.2	136.2
Equity-based compensation	0.4	0.4
Distributions to unitholders	(133.4)	(24.5)	(108.9)
Balance, end of period at Sep. 30, 2022	513.9	247.8	266.1
Balance, beginning of period at Dec. 31, 2022	529	245.1	283.9
Net income	142.2	20.7	121.5
Equity-based compensation	0.6	0.6
Distributions to unitholders	(136.7)	(25.1)	(111.6)
Recognition of deferred tax asset	4.3	4.3
Class B unit repurchase	(100)	(17.5)	(82.5)
Transaction costs	(0.9)	(0.2)	(0.7)
Balance, end of period at Mar. 31, 2023	438.5	227.9	210.6
Balance, beginning of period at Dec. 31, 2022	529	245.1	283.9
Net income	454.9
Balance, end of period at Sep. 30, 2023	445.3	367.4	77.9
Balance, beginning of period at Mar. 31, 2023	438.5	227.9	210.6
Net income	147.9	25.1	122.8
Equity-based compensation	0.4	0.4
Distributions to unitholders	(138.3)	(25.9)	(112.4)
Recognition of deferred tax asset	87.2	87.2
Sales of shares held by Sponsors		11	(11)
Class B unit repurchase	(100)	(23.4)	(76.6)
Transaction costs	(0.9)	(0.2)	(0.7)
Balance, end of period at Jun. 30, 2023	434.8	302.1	132.7
Net income	164.8	35.3	129.5
Equity-based compensation	0.3	0.3
Distributions to unitholders	(140.1)	(34.2)	(105.9)
Recognition of deferred tax asset	86.2	86.2
Sales of shares held by Sponsors		6.8	(6.8)
Class B unit repurchase	(100)	(28.9)	(71.1)
Transaction costs	(0.7)	(0.2)	(0.5)
Balance, end of period at Sep. 30, 2023	$ 445.3	$ 367.4	$ 77.9

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (UNAUDITED) (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022
Statement of Partners' Capital [Abstract]
Distributions to unitholders - per unit/share	$ 0.6011	$ 0.5851	$ 0.5696	$ 0.5559	$ 0.5492	$ 0.5167

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities
Net income	$ 454.9	$ 470.8
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation expense	142.1	134.9
(Income) loss from equity investments	(5.3)	(4.2)
Distributions from equity investments	7.8	7.5
Amortization of deferred financing costs	6.3	6.6
Equity-based compensation expense	1.3	1.3
Deferred income tax expense (benefit)	25.9	19.6
Changes in assets and liabilities:
Accounts receivable – affiliate	1.3	(10.3)
Other current and noncurrent assets	(5.7)	(3.9)
Accounts payable – trade	(7.6)	7.7
Accounts payable – affiliate	(0.6)	(1.7)
Accrued liabilities	0.8	8
Other current and noncurrent liabilities	(2.4)	2.2
Net cash provided by (used in) operating activities	618.8	638.5
Cash flows from investing activities
Additions to property, plant and equipment	(160)	(176.6)
Net cash provided by (used in) investing activities	(160)	(176.6)
Cash flows from financing activities
Net proceeds from (repayments of) bank borrowings with maturities of 90 days or less	258	(61)
Bank borrowings with maturities of greater than 90 days
Borrowings		20
Repayments		(10)
Proceeds from issuance of senior notes		400
Deferred financing costs		(13)
Transaction costs	(1.5)	(1.3)
Class B unit repurchase	(300)	(400)
Distributions to shareholders/unitholders	(85.2)	(66.2)
Distributions to noncontrolling interest	(329.9)	(330)
Net cash provided by (used in) financing activities	(458.6)	(461.5)
Increase (decrease) in cash and cash equivalents	0.2	0.4
Cash and cash equivalents, beginning of period	3.1	2.2
Cash and cash equivalents, end of period	3.3	2.6
Supplemental disclosure of non-cash investing and financing activities:
(Increase) decrease in accrued capital expenditures and related liabilities	(13.9)	7.2
Recognition of deferred tax asset	$ 177.7	$ 86.4

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ 35.3	$ 23.2	$ 81.1	$ 62.1

Insider Trading Arrangements

Insider Trading Arrangements	9 Months Ended
	Sep. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Note 1. Basis of Presentation Unless the context otherwise requires, references in this report to the “Company,” “we,” “our,” “us” or like terms, refer to Hess Midstream LP and its subsidiaries. The consolidated financial statements included in this report reflect all normal and recurring adjustments which, in the opinion of management, are necessary for a fair presentation of our consolidated financial position at September 30, 2023 and December 31, 2022, the consolidated results of operations for the three and nine months ended September 30, 2023 and 2022, and the consolidated cash flows for the nine months ended September 30, 2023 and 2022. The Company has no items of other comprehensive income (loss); therefore, net income (loss) is equal to comprehensive income (loss). The unaudited results of operations for the interim periods reported are not necessarily indicative of results to be expected for the full year. The consolidated financial statements were prepared in accordance with the requirements of the Securities and Exchange Commission (“SEC”) for interim reporting. As permitted under those rules, certain notes or other financial information that are normally required by U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted from these interim consolidated financial statements. These financial statements, therefore, should be read in conjunction with the financial statements and related notes included in the Company’s annual report on Form 10‑K for the year ended December 31, 2022. We consolidate the activities of Hess Midstream Operations LP (“the Partnership”), as a variable interest entity (“VIE”) under U.S. GAAP. We have concluded that we are the primary beneficiary of the VIE, as defined in the accounting standards, since we have the power, through our ownership, to direct those activities that most significantly impact the economic performance of the Partnership. This conclusion was based on a qualitative analysis that considered the Partnership’s governance structure and the delegation of control provisions, which provide us the ability to control the operations of the Partnership. All financial statement activities associated with the VIE are captured within gathering, processing and storage, and terminaling and export segments (see Note 11, Segments ). We currently do not have any independent assets or operations other than our interest in the Partnership. Our noncontrolling interest represents the approximate 70.2 % interest in the Partnership retained by Hess Corporation (“Hess”) and GIP II Blue Holding, L.P. (“GIP” and together with Hess, the “Sponsors”) at September 30, 2023 ( 81.7 % at December 31, 2022). See Note 2, Equity Transactions for a description of changes in noncontrolling interest related to the equity transactions.

Equity Transactions

Equity Transactions	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Equity Transactions	Note 2. Equity Transactions Equity Offering Transactions On April 4, 2022, the Sponsors sold an aggregate of 10,235,000 of our Class A shares representing limited partner interests (the “Class A Shares”), inclusive of the underwriters’ option to purchase up to 1,335,000 of additional shares, which was fully exercised, in an underwritten public offering at a price of $ 29.50 per Class A Share, less underwriting discounts. The Sponsors received net proceeds from the offering of approximately $ 291.7 million, after deducting underwriting discounts. On May 19, 2023, the Sponsors sold an aggregate of 12,765,000 of our Class A Shares, inclusive of the underwriters’ option to purchase up to 1,665,000 of additional shares, which was fully exercised, in an underwritten public offering at a price of $ 27.00 per Class A Share, less underwriting discounts. The Sponsors received net proceeds from the offering of approximately $ 333.4 million, after deducting underwriting discounts. On August 17, 2023, GIP sold an aggregate of 10,000,000 of our Class A Shares in an underwritten public offering at a price of $ 28.80 per Class A Share, less underwriting discounts. GIP also granted the underwriter an option to purchase up to an additional 1,500,000 Class A Shares at the same price per Class A Share, less underwriting discounts, which was exercised in full on August 22, 2023. GIP received net proceeds from the offering of approximately $ 328.8 million, after deducting underwriting discounts. The Company did no t receive any proceeds in the equity offering transactions. The above equity offering transactions were conducted pursuant to a registration rights agreement among us and the Sponsors. The Class A Shares sold in the offerings were obtained by the Sponsors by exchanging to us the respective number of their Class B units representing limited partner interests in the Partnership (the “Class B Units”), together with an equal number of Class B shares representing limited partner interests in the Company (the “Class B Shares”) held by the Company’s general partner. As a result, the total number of Class A and Class B Shares did not change. The Company retained control in the Partnership based on the delegation of control provisions, as described in Note 1, Basis of Presentation . As a result of the equity offering transactions described above, we recognized adjustments increasing the carrying amount of the Class A shareholders’ capital balance by $ 17.8 million (nine months ended September 30, 2022: $ 27.0 million) and decreasing the carrying amount of noncontrolling interest by an equal amount to reflect the change in ownership interest. Class B Unit Repurchases On March 29, 2022, the Company, the Partnership and our Sponsors entered into a unit repurchase agreement pursuant to which the Partnership agreed to purchase from the Sponsors, subject to the 2022 secondary equity offering transaction described above, an aggregate number of Class B Units to be determined by dividing (a) $ 400.0 million by (b) the public offering price of the Class A Shares to be set in the secondary offering. On April 4, 2022, the repurchase transaction closed, and the Partnership purchased directly from the Sponsors 13,559,322 Class B Units at a purchase price per Class B Unit of $ 29.50 , which is equal to the public offering price per Class A Share in the 2022 equity offering transaction described above. The 2022 repurchase transaction was funded using borrowings under the Partnership’s revolving credit facility, which were subsequently repaid with proceeds from a $ 400.0 million senior unsecured notes offering (see Note 6, Debt and Interest Expense ). On March 27, 2023, the Company, the Partnership and our Sponsors entered into a unit repurchase agreement pursuant to which the Partnership agreed to purchase from the Sponsors 3,619,254 Class B Units for an aggregate purchase price of approximately $ 100.0 million. The repurchase transaction was consummated on March 30, 2023. The purchase price per Class B Unit was $ 27.63 , the closing price of the Class A Shares on March 27, 2023. On June 26, 2023, the Company, the Partnership and our Sponsors entered into a unit repurchase agreement pursuant to which the Partnership agreed to purchase from the Sponsors 3,350,084 Class B Units for an aggregate purchase price of approximately $ 100.0 million. The repurchase transaction was consummated on June 29, 2023. The purchase price per Class B Unit was $ 29.85 , the closing price of the Class A Shares on June 26, 2023. On September 19, 2023, the Company, the Partnership and our Sponsors entered into a unit repurchase agreement pursuant to which the Partnership agreed to purchase from the Spons ors 3,301,420 Class B Units for an aggregate purchase price of approximately $ 100.0 million. The repurchase transaction was consummated on S eptember 22, 2023. The purchase price per Class B Unit was $ 30.29 , the closing price of the Class A Shares on September 19, 20 23. The 2023 repurchase transactions were funded using borrowings under the Partnership’s existing revolving credit facility (see Note 6, Debt and Interest Expense ). Pursuant to the terms of the repurchase agreements described above, immediately following each purchase of the Class B Units from the Sponsors, the Partnership cancelled the repurchased units, and the Company cancelled, for no consideration, an equal number of its Class B Shares. The repurchase transactions were accounted for in accordance with ASC 810 whereby changes in a parent’s ownership interest while the parent retains its controlling financial interest in its subsidiary are accounted for as equity transactions. The carrying amounts of the noncontrolling interest were adjusted to reflect the changes in the ownership interest with the difference between the amounts of consideration paid and the amounts by which the noncontrolling interest were adjusted recognized as a reduction in equity attributable to Class A shareholders. We incurred approximately $ 2.5 million of costs directly attributable to the repurchase transactions that were charged to equity (nine months ended September 30, 2022: $ 1.5 million). As a result of the equity offering and the unit repurchase transactions described above, we also recognized an additional deferred tax asset of $ 177.7 million (nine months ended September 30, 2022: $ 86.4 million ) related to the change in the temporary difference between the carrying amount and the tax basis of our investment in the Partnership. The effect of recognizing the additional deferred tax asset was included in Class A shareholders’ equity balance in the accompanying consolidated statement of changes in partners’ capital due to the transactions being characterized as transactions among or with shareholders.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2023
Related Party Transactions [Abstract]
Related Party Transactions	Note 3. Related Party Transactions In addition to the Class B Unit repurchase transactions and distributions to the Sponsors disclosed elsewhere in the Notes to consolidated financial statements, we had the following related party transactions: Commercial Agreements Effective January 1, 2014, we entered into long-term fee-based (i) gas gathering, (ii) crude oil gathering, (iii) gas processing and fractionation, (iv) storage services, and (v) terminal and export services agreements with certain subsidiaries of Hess. Effective January 1, 2019, we entered into long-term fee-based water services agreements with a subsidiary of Hess. For the services performed under these commercial agreements, we receive a fee per barrel of crude oil, barrel of water, Mcf of natural gas, or Mcf equivalent of NGLs, as applicable, delivered during each month, and Hess is obligated to provide us with minimum volumes of crude oil, water, natural gas and NGLs. Minimum volume commitments (“MVCs”) are equal to 80 % of Hess’ nominations in each development plan that apply on a three-year rolling basis such that MVCs are set for the three years following the most recent nomination. Without our consent, the MVCs resulting from the nominated volumes for any quarter or year contained in any prior development plan shall not be reduced by any updated development plan unless dedicated production is released by us. The applicable MVCs may, however, be increased as a result of the nominations contained in any such updated development plan. Except for the water services agreements and except for a certain gathering sub-system as described below, each of our commercial agreements with Hess has an initial 10 -year term effective January 1, 2014 (“Initial Term”). For this gathering sub-system, the Initial Term is 15 years effective January 1, 2014 and for the water services agreements the Initial Term is 14 years effective January 1, 2019. Each of our commercial agreements other than our storage services agreement includes an inflation escalator and a fee recalculation mechanism that allows fees to be adjusted annually during the Initial Term for updated estimates of cumulative throughput volumes and our capital and operating expenditures in order to target a return on capital deployed over the Initial Term of the applicable commercial agreement (or, with respect to the crude oil services fee under our terminal and export services agreement, the 20 -year period commencing on the effective date of the agreement). We have the unilateral right, exercisable by the delivery of a written notice on or before the date that is three years prior to the expiration of the Initial Term, to extend each commercial agreement for one additional 10 -year term (“Secondary Term”). For a certain gathering sub-system, the Secondary Term is 5 -years and for the water services agreements the Secondary Term is 10 years. On December 30, 2020, we exercised our renewal options to extend the terms of certain crude oil gathering, terminaling, storage, gas processing and gas gathering commercial agreements with Hess for the Secondary Term through December 31, 2033. There were no changes to any provisions of the existing commercial agreements as a result of the exercise of the renewal options. For the remaining water gathering and disposal agreements as well as the remaining gas gathering agreement, we have the sole option to renew these agreements for an additional term that is exercisable at a later date. During the Secondary Term of each of our commercial agreements other than our storage services agreement and terminal and export services agreement (with respect to crude oil terminaling services), the fee recalculation model under each applicable agreement will be replaced by an inflation-based fee structure. The initial fee for the first year of the Secondary Term will be determined based on the average fees paid by Hess under the applicable agreement during the last three years of the Initial Term (with such fees adjusted for inflation through the first year of the Secondary Term). For each year following the first year of the Secondary Term, the applicable fee will be adjusted annually based on the percentage change in the consumer price index, provided that we may not increase any fee by more than 3 % in any calendar year solely by reason of an increase in the consumer price index, and no fee will ever be reduced below the amount of the applicable fee payable by Hess in the prior year as a result of a decrease in the consumer price index. During the Secondary Term of our commercial agreements, Hess will continue to have MVCs equal to 80 % of Hess’ nominations in each development plan that apply on a three-year rolling basis through the Secondary Term. For the three and nine months ended September 30, 2023 and 2022 , approximately 100 % of our revenues were attributable to our fee‑based commercial agreements with Hess, including revenues from third‑party volumes contracted with Hess and delivered to us under these agreements. We retain control of our assets and the flow of volumes based on available capacity within our integrated gathering, processing and terminaling systems. Together with Hess, we are pursuing strategic relationships with third‑party producers and other midstream companies with operations in the Bakken in order to maximize our utilization rates. Revenues from contracts with customers on a disaggregated basis are as follows: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Oil and gas gathering services $ 170.5 $ 160.5 $ 467.8 $ 454.2 Processing and storage services 132.2 121.7 367.6 352.0 Terminaling and export services 31.8 30.5 83.2 95.5 Water gathering and disposal services 26.8 21.5 68.0 57.6 Total revenues from contracts with customers $ 361.3 $ 334.2 $ 986.6 $ 959.3 Other income 1.8 0.6 5.5 1.3 Total revenues $ 363.1 $ 334.8 $ 992.1 $ 960.6 The following table presents MVC shortfall fees earned during each period: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Oil and gas gathering services $ 2.8 $ 20.1 $ 6.4 $ 71.9 Processing and storage services - - ( 0.3 ) 22.8 Terminaling and export services - 6.9 3.2 23.5 Water gathering disposal services - - - 0.4 Total $ 2.8 $ 27.0 $ 9.3 $ 118.6 The following table presents third-party pass-through costs for which we recognize revenues in an amount equal to the costs. These third-party costs are included in Operating and maintenance expenses in the accompanying unaudited consolidated statements of operations. Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Electricity and other related fees $ 13.0 $ 12.7 $ 35.5 $ 35.2 Produced water trucking and disposal costs 12.1 9.4 29.1 25.2 Rail transportation costs - - ( 3.4 ) 4.3 Total $ 25.1 $ 22.1 $ 61.2 $ 64.7 Omnibus and Employee Secondment Agreements Under our omnibus and employee secondment agreements, Hess provides substantial operational and administrative services to us in support of our assets and operations. For the three and nine months ended September 30, 2023 and 2022 , we had the following charges from Hess. The classification of these charges between operating and maintenance expenses and general and administrative expenses is based on the fundamental nature of the services being performed for our operations. Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Operating and maintenance expenses $ 18.7 $ 17.8 $ 56.1 $ 51.4 General and administrative expenses 4.0 4.0 11.7 11.5 Total $ 22.7 $ 21.8 $ 67.8 $ 62.9 LM4 Agreements Separately from our commercial agreements with Hess, we entered into a gas processing agreement with Little Missouri 4 (“LM4”), a 50 / 50 joint venture with Targa Resources Corp., under which we pay a processing fee per Mcf of natural gas and reimburse LM4 for our proportionate share of electricity costs. These processing fees are included in Operating and maintenance expenses in the accompanying consolidated statements of operations. In addition, we share profits and losses and receive distributions from LM4 under the LM4 amended and restated limited liability company agreement based on our ownership interest. For the three and nine months ended September 30, 2023 and 2022, we had the following activity related to our agreements with LM4: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Processing fee incurred $ 6.9 $ 6.7 $ 17.7 $ 15.9 Earnings from equity investments 2.0 2.8 5.3 4.2 Distributions received from equity investments 3.4 1.4 7.8 7.5

Property, Plant and Equipment

Property, Plant and Equipment	9 Months Ended
	Sep. 30, 2023
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Note 4. Property, Plant and Equipment Property, plant and equipment, at cost, is as follows: Estimated useful lives September 30, 2023 December 31, 2022 (in millions, except for number of years) Gathering assets Pipelines 22 years $ 1,646.0 $ 1,591.7 Compressors, pumping stations and terminals 22 to 25 years 946.5 923.1 Gas plant assets Pipelines, pipes and valves 22 to 25 years 460.0 460.0 Equipment 12 to 30 years 428.2 428.2 Processing and fractionation facilities 25 years 417.2 414.4 Buildings 35 years 182.3 182.3 Logistics facilities and railcars 20 to 25 years 409.2 389.3 Storage facilities 20 to 25 years 19.7 19.7 Other 20 to 25 years 28.2 25.5 Construction-in-progress N/A 209.7 136.3 Total property, plant and equipment, at cost 4,747.0 4,570.5 Accumulated depreciation ( 1,539.2 ) ( 1,397.7 ) Property, plant and equipment, net $ 3,207.8 $ 3,172.8

Accrued Liabilities

Accrued Liabilities	9 Months Ended
	Sep. 30, 2023
Accrued Liabilities, Current [Abstract]
Accrued Liabilities	Note 5. Accrued Liabilities Accrued liabilities are as follows: September 30, 2023 December 31, 2022 (in millions) Accrued interest $ 29.0 $ 35.4 Accrued capital expenditures 28.9 24.1 Other accruals 31.3 23.4 Total $ 89.2 $ 82.9

Debt and Interest Expense

Debt and Interest Expense	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Debt and Interest Expense	Note 6. Debt and Interest Expense Fixed‑Rate Senior Notes As of September 30, 2023 , the Partnership had $ 400.0 million aggregate principal amount of 5.500 % fixed‑rate senior unsecured notes due 2030 that were issued to qualified institutional investors. Interest is payable semi‑annually on April 15 and October 15. As of September 30, 2023 , the Partnership had $ 750.0 million aggregate principal amount of 4.250 % fixed‑rate senior unsecured notes due 2030 that were issued to qualified institutional investors. Interest is payable semi‑annually on February 15 and August 15. As of September 30, 2023 , the Partnership also had $ 550.0 million aggregate principal amount of 5.125 % fixed‑rate senior unsecured notes due 2028 that were issued to qualified institutional investors. Interest is payable semi‑annually on June 15 and December 15. In addition, as of September 30, 2023 , the Partnership had $ 800.0 million aggregate principal amount of 5.625 % fixed‑rate senior unsecured notes due 2026 that were issued to qualified institutional investors. Interest is payable semi‑annually on February 15 and August 15. The notes described above are guaranteed by certain subsidiaries of the Partnership. Each of the indentures for the senior unsecured notes described above contains customary covenants that restrict our ability and the ability of our restricted subsidiaries to (i) declare or pay any dividend or make any other restricted payments; (ii) transfer or sell assets or subsidiary stock; (iii) incur additional debt; or (iv) make restricted investments, unless, at the time of and immediately after giving pro forma effect to such restricted payments and any related incurrence of indebtedness or other transactions, no default has occurred and is continuing or would occur as a consequence of such restricted payment and if the leverage ratio does not exceed 4.25 to 1.00. As of September 30, 2023, we were in compliance with all debt covenants under the indentures. In addition, the covenants included in the indentures governing the senior unsecured notes contain provisions that allow the Company to satisfy the Partnership’s reporting obligations under the indenture, as long as any such financial information of the Company contains information reasonably sufficient to identify the material differences, if any, between the financial information of the Company, on the one hand, and the Partnership and its subsidiaries on a stand-alone basis, on the other hand and the Company does not directly own capital stock of any person other than the Partnership and its subsidiaries, or material business operations that would not be consolidated with the financial results of the Partnership and its subsidiaries. The Company is a holding company and has no independent assets or operations. Other than the interest in the Partnership and the effect of federal and state income taxes that are recognized at the Company level, there are no material differences between the consolidated financial statements of the Partnership and the consolidated financial statements of the Company. Credit Facilities As of September 30, 2023 , the Partnership had $ 1.4 billion senior secured credit facilities (the “Credit Facilities”) consisting of a $ 1.0 billion 5 -year revolving credit facility and a $ 400.0 million 5 ‑year Term Loan A facility. The Credit Facilities mature in July 2027 . Facility fees accrue on the total capacity of the revolving credit facility. Borrowings under the 5 -year Term Loan A facility generally bear interest at Secured Overnight Financing Rate (”SOFR”) plus the applicable margin ranging from 1.65 % to 2.55 %, while the applicable margin for the 5 ‑year syndicated revolving credit facility ranges from 1.375 % to 2.050 %. Pricing levels for the facility fee and interest rate margins are based on the Partnership’s ratio of total debt to EBITDA (as defined in the Credit Facilities). If the Partnership obtains an investment grade credit rating, the pricing levels will be based on the Partnership’s credit ratings in effect from time to time. As of September 30, 2023, borrowings of $ 276.0 million were drawn and outstanding under the Partnership’s revolving credit facility, and borrowings of $ 400.0 million, excluding deferred issuance costs, were drawn and outstanding under the Partnership’s Term Loan A facility. The Credit Facilities can be used for borrowings and letters of credit for general corporate purposes. The Credit Facilities are guaranteed by each direct and indirect wholly owned material domestic subsidiary of the Partnership, and are secured by first priority perfected liens on substantially all of the presently owned and after-acquired assets of the Partnership and its direct and indirect wholly owned material domestic subsidiaries, including equity interests directly owned by such entities, subject to certain customary exclusions. The Credit Facilities contain representations and warranties, affirmative and negative covenants and events of default that the Partnership considers to be customary for an agreement of this type, including a covenant that requires the Partnership to maintain a ratio of total debt to EBITDA (as defined in the Credit Facilities) for the prior four fiscal quarters of not greater than 5.00 to 1.00 as of the last day of each fiscal quarter ( 5.50 to 1.00 during the specified period following certain acquisitions) and, prior to the Partnership obtaining an investment grade credit rating, a ratio of secured debt to EBITDA for the prior four fiscal quarters of not greater than 4.00 to 1.00 as of the last day of each fiscal quarter. As of September 30, 2023, the Partnership was in compliance with these financial covenants. Fair Value Measurement At September 30, 2023, our total debt had a carrying value of $ 3,148.3 million and had a fair value of approximately $ 2,954.5 million, based on Level 2 inputs in the fair value measurement hierarchy. The carrying value of the amounts under the Term Loan A facility and revolving credit facility at September 30, 2023 , approximated their fair value. Any changes in interest rates do not impact cash outflows associated with fixed rate interest payments or settlement of debt principal, unless a debt instrument is repurchased prior to maturity.

Partners' Capital and Distribut

Partners' Capital and Distributions	9 Months Ended
	Sep. 30, 2023
Partners' Capital Notes [Abstract]
Partners' Capital and Distributions	Note 7. Partners’ Capital and Distributions Our partnership agreement requires that, within 45 days after the end of each quarter, we distribute all of our available cash, as defined in the partnership agreement, to shareholders of record on the applicable record date. The following table details the distributions declared and/or paid for the periods presented: z Period Record Date Distribution Date Distribution per Class A Share First Quarter 2022 May 5, 2022 May 13, 2022 $ 0.5492 Second Quarter 2022 August 4, 2022 August 12, 2022 $ 0.5559 Third Quarter 2022 November 3, 2022 November 14, 2022 $ 0.5627 Fourth Quarter 2022 February 2, 2023 February 13, 2023 $ 0.5696 First Quarter 2023 May 4, 2023 May 12, 2023 $ 0.5851 Second Quarter 2023 August 3, 2023 August 14, 2023 $ 0.6011 Third Quarter 2023 (1) November 2, 2023 November 14, 2023 $ 0.6175 (1) For more information, see Note 12, Subsequent Events.

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Earnings per Share	Note 8. Earnings per Share We calculate earnings per Class A Share as we do not have any other participating securities. Substantially all of income tax expense is attributed to earnings of Class A Shares reflective of our organizational structure. Class B Units of the Partnership together with the equal number of Class B Shares of the Company are convertible to Class A Shares of the Company on a one -for-one basis. In addition, our restricted equity-based awards may have a dilutive effect on our earnings per share. Diluted earnings per Class A Share are calculated using the “treasury stock method” or “if-converted method,” whichever is more dilutive. Three Months Ended September 30, Nine Months Ended September 30, (in millions, except per share amounts) 2023 2022 2023 2022 Net income $ 164.8 $ 159.4 $ 454.9 $ 470.8 Less: Net income attributable to noncontrolling interest 129.5 136.2 373.8 408.7 Net income attributable to Hess Midstream LP 35.3 23.2 81.1 62.1 Net income attributable to Hess Midstream LP Basic: $ 0.57 $ 0.53 $ 1.56 $ 1.54 Diluted: $ 0.57 $ 0.53 $ 1.54 $ 1.52 Weighted average Class A shares outstanding: Basic: 62.5 44.0 52.2 40.5 Diluted: 62.5 44.1 52.2 40.5 For the three and nine months ended September 30, 2023 the weighted average number of Class A Shares outstanding included 34,752 and 38,319 dilutive restricted shares, respectively, compared with 58,300 and 70,262 dilutive restricted shares for the three and nine months ended September 30, 2022 , respectively.

Concentration of Credit Risk

Concentration of Credit Risk	9 Months Ended
	Sep. 30, 2023
Risks and Uncertainties [Abstract]
Concentration of Credit Risk	Note 9. Concentration of Credit Risk Hess represented approximately 100 % of our total revenues and accounts receivable for the three and nine months ended September 30, 2023 and 2022 .

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 10. Commitments and Contingencies Environmental Contingencies The Company is subject to federal, state and local laws and regulations relating to the environment. On August, 12, 2022, the Company became aware of a produced water release from an underground pipeline located approximately 8 miles north of Ray, North Dakota. It is estimated that approximately 34,000 barrels of produced water were released, causing impacts to soils, crops, and groundwater. Remediation infrastructure was put in place and remediation and monitoring is ongoing. As of September 30, 2023 our reserves for all estimated remediation liabilities, inclusive of the produced water release above, in Accrued liabilities and Other noncurrent liabilities were $ 1.3 million and $ 6.1 million, respectively, compared with $ 1.4 million and $ 4.3 million, respectively, as of December 31, 2022. Legal Proceedings In the ordinary course of business, the Company is from time to time party to various judicial and administrative proceedings. We regularly assess the need for accounting recognition or disclosure of these contingencies. In the case of a known contingency, we accrue a liability when the loss is probable and the amount is reasonably estimable. If a range of amounts can be reasonably estimated and no amount within the range is a better estimate than any other amount, then the minimum of the range is accrued. On or about March 14, 2023, the Company received a Notice of Violation (the “Notice”) from the North Dakota Department of Environmental Quality in the connection with the produced water release described under Environmental Contingencies above. The Notice alerts the Company that it may have violated the State’s water pollution control laws, but neither imposes nor waives any enforcement action. The State has not yet taken formal enforcement action. The Company responded to the Notice detailing the steps it has taken to remediate the produced water release. Unless and until formal enforcement action is started, the Company cannot fully predict the potential cost of any fines or penalties and what rights, claims, and defenses it may have. Based on currently available information, we believe it is remote that the outcome of known matters, including the produced water release described above, would have a material adverse impact on our financial condition, results of operations or cash flows. Accordingly, as of September 30, 2023 and December 31, 2022 , we did no t have material accrued liabilities for legal contingencies.

Segments

Segments	9 Months Ended
	Sep. 30, 2023
Segment Reporting [Abstract]
Segments	Note 11. Segments Our operations are located in the United States and are organized into three reportable segments: (1) gathering, (2) processing and storage and (3) terminaling and export. Our reportable segments comprise the structure used by our Chief Operating Decision Maker (“CODM”) to make key operating decisions and assess performance. These segments are strategic business units with differing products and services. Our CODM evaluates the segments’ operating performance based on multiple measures including Adjusted EBITDA, defined as net income (loss) before net interest expense, income tax expense (benefit), depreciation and amortization and our proportional share of depreciation of equity affiliates, as further adjusted to eliminate the impact of certain items that we do not consider indicative of our ongoing operating performance, such as transaction costs, other income and other non-cash, non‑recurring items, if applicable. The following tables reflect certain financial data for each reportable segment: Gathering Processing and Storage Terminaling and Export Interest and Other Consolidated (in millions) For the Three Months Ended September 30, 2023 Revenues and other income $ 197.5 $ 133.2 $ 32.4 $ - $ 363.1 Net income (loss) 113.6 92.8 17.6 ( 59.2 ) 164.8 Net income (loss) attributable to 30.0 24.5 4.8 ( 24.0 ) 35.3 Depreciation expense 28.9 14.5 4.3 - 47.7 Proportional share of equity affiliates' - 1.3 - - 1.3 Income from equity investments - 2.0 - - 2.0 Interest expense, net - - - 45.8 45.8 Income tax expense - - - 11.4 11.4 Adjusted EBITDA 142.5 108.6 21.9 ( 2.0 ) 271.0 Capital expenditures* 60.3 4.2 - - 64.5 Gathering Processing and Storage Terminaling and Export Interest and Other Consolidated (in millions) For the Three Months Ended September 30, 2022 Revenues and other income $ 182.0 $ 121.7 $ 31.1 $ - $ 334.8 Net income (loss) 103.4 83.9 21.2 ( 49.1 ) 159.4 Net income (loss) attributable to 18.9 15.2 4.0 ( 14.9 ) 23.2 Depreciation expense 26.9 14.5 4.1 - 45.5 Proportional share of equity affiliates' - 1.3 - - 1.3 Income from equity investments - 2.8 - - 2.8 Interest expense, net - - - 39.9 39.9 Income tax expense - - - 7.5 7.5 Adjusted EBITDA 130.3 99.7 25.3 ( 1.7 ) 253.6 Capital expenditures* 55.8 2.6 2.2 - 60.6 Gathering Processing and Storage Terminaling and Export Interest and Other Consolidated (in millions) For the Nine Months Ended September 30, 2023 Revenues and other income $ 536.7 $ 370.4 $ 85.0 $ - $ 992.1 Net income (loss) 308.7 258.0 51.9 ( 163.7 ) 454.9 Net income (loss) attributable to 68.7 57.3 11.5 ( 56.4 ) 81.1 Depreciation expense 85.9 43.5 12.7 - 142.1 Proportional share of equity affiliates' - 3.9 - - 3.9 Income from equity investments - 5.3 - - 5.3 Interest expense, net - - - 131.2 131.2 Income tax expense - - - 26.0 26.0 Adjusted EBITDA 394.6 305.4 64.6 ( 6.5 ) 758.1 Capital expenditures* 156.1 7.8 10.0 - 173.9 Gathering Processing and Storage Terminaling and Export Interest and Other Consolidated (in millions) For the Nine Months Ended September 30, 2022 Revenues and other income $ 511.8 $ 352.0 $ 96.8 $ - $ 960.6 Net income (loss) 296.8 243.3 64.4 ( 133.7 ) 470.8 Net income (loss) attributable to 49.5 40.6 10.7 ( 38.7 ) 62.1 Depreciation expense 79.4 43.3 12.2 - 134.9 Proportional share of equity affiliates' - 3.9 - - 3.9 Income from equity investments - 4.2 - - 4.2 Interest expense, net - - - 108.6 108.6 Income tax expense - - - 19.6 19.6 Adjusted EBITDA 376.2 290.5 76.6 ( 5.5 ) 737.8 Capital expenditures* 159.2 4.8 5.4 - 169.4 * Includes acquisition, expansion and maintenance capital expenditures, as applicable. Total assets for the reportable segments are as follows: September 30, 2023 December 31, 2022 (in millions) Gathering $ 2,103.0 $ 2,022.0 Processing and Storage (1) 1,061.1 1,099.2 Terminaling and Export 269.6 275.8 Interest and Other 341.8 191.2 Total assets $ 3,775.5 $ 3,588.2 (1) Includes investment in equity investees of $ 91.4 million as of September 30, 2023 and $ 93.9 million as of December 31, 2022 .

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2023
Subsequent Events [Abstract]
Subsequent Events	Note 12. Subsequent Events On October 22, 2023, Hess entered into an Agreement and Plan of Merger (the “Chevron Merger Agreement”) with Chevron Corporation (“Chevron”) and Yankee Merger Sub Inc., a direct, wholly-owned subsidiary of Chevron (“Merger Subsidiary”). The Chevron Merger Agreement provides that, among other things and subject to the terms and conditions of the Chevron Merger Agreement, Merger Subsidiary will be merged with and into Hess, with Hess surviving and continuing as the surviving corporation in the merger as a direct, wholly-owned subsidiary of Chevron (such transaction, the “Chevron Merger”). The Chevron Merger is expected to close in the first half of 2024, subject to shareholder and regulatory approvals and other customary closing conditions. Upon consummation of the proposed transaction, Chevron will acquire Hess ’ 37.8 % ownership in the Company, including its right to appoint four directors to the Company’s Board. On October 23, 2023 , the board of directors of our general partner declared a quarterly cash distribution of $ 0.6175 per Class A Share for the quarter ended September 30, 2023. The distribution represents an approximate 2.7 % increase in the quarterly distribution per Class A Share for the third quarter of 2023 as compared with the second quarter of 2023. The distribution will be payable on November 14, 2023 , to shareholders of record as of the close of business on November 2, 2023 . Simultaneously, the Partnership will make a distribution of $ 0.6175 per Class B Unit of the Partnership to the Sponsors.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Presentation	The consolidated financial statements included in this report reflect all normal and recurring adjustments which, in the opinion of management, are necessary for a fair presentation of our consolidated financial position at September 30, 2023 and December 31, 2022, the consolidated results of operations for the three and nine months ended September 30, 2023 and 2022, and the consolidated cash flows for the nine months ended September 30, 2023 and 2022. The Company has no items of other comprehensive income (loss); therefore, net income (loss) is equal to comprehensive income (loss). The unaudited results of operations for the interim periods reported are not necessarily indicative of results to be expected for the full year. The consolidated financial statements were prepared in accordance with the requirements of the Securities and Exchange Commission (“SEC”) for interim reporting. As permitted under those rules, certain notes or other financial information that are normally required by U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted from these interim consolidated financial statements. These financial statements, therefore, should be read in conjunction with the financial statements and related notes included in the Company’s annual report on Form 10‑K for the year ended December 31, 2022. We consolidate the activities of Hess Midstream Operations LP (“the Partnership”), as a variable interest entity (“VIE”) under U.S. GAAP. We have concluded that we are the primary beneficiary of the VIE, as defined in the accounting standards, since we have the power, through our ownership, to direct those activities that most significantly impact the economic performance of the Partnership. This conclusion was based on a qualitative analysis that considered the Partnership’s governance structure and the delegation of control provisions, which provide us the ability to control the operations of the Partnership. All financial statement activities associated with the VIE are captured within gathering, processing and storage, and terminaling and export segments (see Note 11, Segments ). We currently do not have any independent assets or operations other than our interest in the Partnership. Our noncontrolling interest represents the approximate 70.2 % interest in the Partnership retained by Hess Corporation (“Hess”) and GIP II Blue Holding, L.P. (“GIP” and together with Hess, the “Sponsors”) at September 30, 2023 ( 81.7 % at December 31, 2022). See Note 2, Equity Transactions for a description of changes in noncontrolling interest related to the equity transactions.

Related Party Transactions (Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2023
Related Party Transactions [Abstract]
Summary of Revenues From Contracts With Customers on Disaggregated Basis	Revenues from contracts with customers on a disaggregated basis are as follows: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Oil and gas gathering services $ 170.5 $ 160.5 $ 467.8 $ 454.2 Processing and storage services 132.2 121.7 367.6 352.0 Terminaling and export services 31.8 30.5 83.2 95.5 Water gathering and disposal services 26.8 21.5 68.0 57.6 Total revenues from contracts with customers $ 361.3 $ 334.2 $ 986.6 $ 959.3 Other income 1.8 0.6 5.5 1.3 Total revenues $ 363.1 $ 334.8 $ 992.1 $ 960.6
Summary of MVC Shortfall Fees Earned	The following table presents MVC shortfall fees earned during each period: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Oil and gas gathering services $ 2.8 $ 20.1 $ 6.4 $ 71.9 Processing and storage services - - ( 0.3 ) 22.8 Terminaling and export services - 6.9 3.2 23.5 Water gathering disposal services - - - 0.4 Total $ 2.8 $ 27.0 $ 9.3 $ 118.6
Summary of Third-party Pass-through Costs for Which Revenues in Amount Equal to Costs are Recognized and Classification of Charges between Operating and Maintenance Expenses and General and Administrative Expenses	The following table presents third-party pass-through costs for which we recognize revenues in an amount equal to the costs. These third-party costs are included in Operating and maintenance expenses in the accompanying unaudited consolidated statements of operations. Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Electricity and other related fees $ 13.0 $ 12.7 $ 35.5 $ 35.2 Produced water trucking and disposal costs 12.1 9.4 29.1 25.2 Rail transportation costs - - ( 3.4 ) 4.3 Total $ 25.1 $ 22.1 $ 61.2 $ 64.7 For the three and nine months ended September 30, 2023 and 2022 , we had the following charges from Hess. The classification of these charges between operating and maintenance expenses and general and administrative expenses is based on the fundamental nature of the services being performed for our operations. Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Operating and maintenance expenses $ 18.7 $ 17.8 $ 56.1 $ 51.4 General and administrative expenses 4.0 4.0 11.7 11.5 Total $ 22.7 $ 21.8 $ 67.8 $ 62.9
Summary of Activity Related to Agreements with Related Party	For the three and nine months ended September 30, 2023 and 2022, we had the following activity related to our agreements with LM4: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (in millions) Processing fee incurred $ 6.9 $ 6.7 $ 17.7 $ 15.9 Earnings from equity investments 2.0 2.8 5.3 4.2 Distributions received from equity investments 3.4 1.4 7.8 7.5

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	9 Months Ended
	Sep. 30, 2023
Property, Plant and Equipment [Abstract]
Components of Property, Plant and Equipment	Property, plant and equipment, at cost, is as follows: Estimated useful lives September 30, 2023 December 31, 2022 (in millions, except for number of years) Gathering assets Pipelines 22 years $ 1,646.0 $ 1,591.7 Compressors, pumping stations and terminals 22 to 25 years 946.5 923.1 Gas plant assets Pipelines, pipes and valves 22 to 25 years 460.0 460.0 Equipment 12 to 30 years 428.2 428.2 Processing and fractionation facilities 25 years 417.2 414.4 Buildings 35 years 182.3 182.3 Logistics facilities and railcars 20 to 25 years 409.2 389.3 Storage facilities 20 to 25 years 19.7 19.7 Other 20 to 25 years 28.2 25.5 Construction-in-progress N/A 209.7 136.3 Total property, plant and equipment, at cost 4,747.0 4,570.5 Accumulated depreciation ( 1,539.2 ) ( 1,397.7 ) Property, plant and equipment, net $ 3,207.8 $ 3,172.8

Accrued Liabilities (Tables)

Accrued Liabilities (Tables)	9 Months Ended
	Sep. 30, 2023
Accrued Liabilities, Current [Abstract]
Schedule of Accrued Liabilities	Accrued liabilities are as follows: September 30, 2023 December 31, 2022 (in millions) Accrued interest $ 29.0 $ 35.4 Accrued capital expenditures 28.9 24.1 Other accruals 31.3 23.4 Total $ 89.2 $ 82.9

Partners' Capital and Distrib_2

Partners' Capital and Distributions (Tables)	9 Months Ended
	Sep. 30, 2023
Partners' Capital Notes [Abstract]
Schedule of Distributions Declared and Paid	The following table details the distributions declared and/or paid for the periods presented: z Period Record Date Distribution Date Distribution per Class A Share First Quarter 2022 May 5, 2022 May 13, 2022 $ 0.5492 Second Quarter 2022 August 4, 2022 August 12, 2022 $ 0.5559 Third Quarter 2022 November 3, 2022 November 14, 2022 $ 0.5627 Fourth Quarter 2022 February 2, 2023 February 13, 2023 $ 0.5696 First Quarter 2023 May 4, 2023 May 12, 2023 $ 0.5851 Second Quarter 2023 August 3, 2023 August 14, 2023 $ 0.6011 Third Quarter 2023 (1) November 2, 2023 November 14, 2023 $ 0.6175 (1) For more information, see Note 12, Subsequent Events.

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Schedule of Earnings per Share	We calculate earnings per Class A Share as we do not have any other participating securities. Substantially all of income tax expense is attributed to earnings of Class A Shares reflective of our organizational structure. Class B Units of the Partnership together with the equal number of Class B Shares of the Company are convertible to Class A Shares of the Company on a one -for-one basis. In addition, our restricted equity-based awards may have a dilutive effect on our earnings per share. Diluted earnings per Class A Share are calculated using the “treasury stock method” or “if-converted method,” whichever is more dilutive. Three Months Ended September 30, Nine Months Ended September 30, (in millions, except per share amounts) 2023 2022 2023 2022 Net income $ 164.8 $ 159.4 $ 454.9 $ 470.8 Less: Net income attributable to noncontrolling interest 129.5 136.2 373.8 408.7 Net income attributable to Hess Midstream LP 35.3 23.2 81.1 62.1 Net income attributable to Hess Midstream LP Basic: $ 0.57 $ 0.53 $ 1.56 $ 1.54 Diluted: $ 0.57 $ 0.53 $ 1.54 $ 1.52 Weighted average Class A shares outstanding: Basic: 62.5 44.0 52.2 40.5 Diluted: 62.5 44.1 52.2 40.5

Segments (Tables)

Segments (Tables)	9 Months Ended
	Sep. 30, 2023
Segment Reporting [Abstract]
Financial Data for Each Reportable Segment	The following tables reflect certain financial data for each reportable segment: Gathering Processing and Storage Terminaling and Export Interest and Other Consolidated (in millions) For the Three Months Ended September 30, 2023 Revenues and other income $ 197.5 $ 133.2 $ 32.4 $ - $ 363.1 Net income (loss) 113.6 92.8 17.6 ( 59.2 ) 164.8 Net income (loss) attributable to 30.0 24.5 4.8 ( 24.0 ) 35.3 Depreciation expense 28.9 14.5 4.3 - 47.7 Proportional share of equity affiliates' - 1.3 - - 1.3 Income from equity investments - 2.0 - - 2.0 Interest expense, net - - - 45.8 45.8 Income tax expense - - - 11.4 11.4 Adjusted EBITDA 142.5 108.6 21.9 ( 2.0 ) 271.0 Capital expenditures* 60.3 4.2 - - 64.5 Gathering Processing and Storage Terminaling and Export Interest and Other Consolidated (in millions) For the Three Months Ended September 30, 2022 Revenues and other income $ 182.0 $ 121.7 $ 31.1 $ - $ 334.8 Net income (loss) 103.4 83.9 21.2 ( 49.1 ) 159.4 Net income (loss) attributable to 18.9 15.2 4.0 ( 14.9 ) 23.2 Depreciation expense 26.9 14.5 4.1 - 45.5 Proportional share of equity affiliates' - 1.3 - - 1.3 Income from equity investments - 2.8 - - 2.8 Interest expense, net - - - 39.9 39.9 Income tax expense - - - 7.5 7.5 Adjusted EBITDA 130.3 99.7 25.3 ( 1.7 ) 253.6 Capital expenditures* 55.8 2.6 2.2 - 60.6 Gathering Processing and Storage Terminaling and Export Interest and Other Consolidated (in millions) For the Nine Months Ended September 30, 2023 Revenues and other income $ 536.7 $ 370.4 $ 85.0 $ - $ 992.1 Net income (loss) 308.7 258.0 51.9 ( 163.7 ) 454.9 Net income (loss) attributable to 68.7 57.3 11.5 ( 56.4 ) 81.1 Depreciation expense 85.9 43.5 12.7 - 142.1 Proportional share of equity affiliates' - 3.9 - - 3.9 Income from equity investments - 5.3 - - 5.3 Interest expense, net - - - 131.2 131.2 Income tax expense - - - 26.0 26.0 Adjusted EBITDA 394.6 305.4 64.6 ( 6.5 ) 758.1 Capital expenditures* 156.1 7.8 10.0 - 173.9 Gathering Processing and Storage Terminaling and Export Interest and Other Consolidated (in millions) For the Nine Months Ended September 30, 2022 Revenues and other income $ 511.8 $ 352.0 $ 96.8 $ - $ 960.6 Net income (loss) 296.8 243.3 64.4 ( 133.7 ) 470.8 Net income (loss) attributable to 49.5 40.6 10.7 ( 38.7 ) 62.1 Depreciation expense 79.4 43.3 12.2 - 134.9 Proportional share of equity affiliates' - 3.9 - - 3.9 Income from equity investments - 4.2 - - 4.2 Interest expense, net - - - 108.6 108.6 Income tax expense - - - 19.6 19.6 Adjusted EBITDA 376.2 290.5 76.6 ( 5.5 ) 737.8 Capital expenditures* 159.2 4.8 5.4 - 169.4 * Includes acquisition, expansion and maintenance capital expenditures, as applicable.
Total Assets for Reportable Segments	Total assets for the reportable segments are as follows: September 30, 2023 December 31, 2022 (in millions) Gathering $ 2,103.0 $ 2,022.0 Processing and Storage (1) 1,061.1 1,099.2 Terminaling and Export 269.6 275.8 Interest and Other 341.8 191.2 Total assets $ 3,775.5 $ 3,588.2 (1) Includes investment in equity investees of $ 91.4 million as of September 30, 2023 and $ 93.9 million as of December 31, 2022 .

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Detail)	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Hess Corporation and GIP II Blue Holding, L.P.
Accounting Policies [Line Items]
Noncontrolling interest percentage	70.20%	81.70%

Equity Transactions - Additiona

Equity Transactions - Additional Information (Detail) - USD ($)								9 Months Ended
	Sep. 19, 2023	Aug. 17, 2023	Jun. 26, 2023	May 19, 2023	Mar. 27, 2023	Apr. 04, 2022	Mar. 29, 2022	Sep. 30, 2022	Sep. 30, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Costs incurred to repurchase shares were charged to equity	$ 2,500,000							$ 1,500,000
5.500% Fixed Rate Senior Unsecured Notes due 2030
Class of Stock [Line Items]
Fixed-rate senior notes									$ 400,000,000
Class A Shares
Class of Stock [Line Items]
Equity offering transaction				12,765,000		10,235,000
Shares issued, price per share				$ 27		$ 29.5
Proceeds from Issuance of public equity offering		$ 0
Additions to deferred tax asset								86,400,000	177,700,000
Net proceeds received by sponsors from public equity offering				$ 333,400,000		$ 291,700,000
Increase (decrease) common unitholders				$ 17,800,000				$ 27,000,000	$ 367,400,000	$ 245,100,000
Class A Shares | Maximum
Class of Stock [Line Items]
Underwriters’ option to purchase additional shares				1,665,000		1,335,000
Class A Shares | GIP
Class of Stock [Line Items]
Equity offering transaction		10,000,000
Shares issued, price per share		$ 28.8
Net proceeds received by sponsors from public equity offering		$ 328,800,000
Class A Shares | GIP | Maximum
Class of Stock [Line Items]
Underwriters’ option to purchase additional shares		1,500,000
Class B Shares
Class of Stock [Line Items]
Repurchase of shares	3,301,420		3,350,084		3,619,254		13,559,322
Value of shares repurchased	$ 100,000,000		$ 100,000,000		$ 100,000,000		$ 400,000,000
Stock purchased price per share	$ 30.29		$ 29.85		$ 27.63		$ 29.5

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
LM4
Related Party Transaction [Line Items]
Percentage of ownership in joint venture	50%		50%
Customer Concentration Risk | Revenue
Related Party Transaction [Line Items]
Revenues attributable to fee based commercial agreements	100%	100%	100%	100%
Hess | Customer Concentration Risk | Revenue
Related Party Transaction [Line Items]
Revenues attributable to fee based commercial agreements	100%	100%	100%	100%
Hess | Amended and Restated Commercial Agreement
Related Party Transaction [Line Items]
Minimum volume commitments, Description			Minimum volume commitments (“MVCs”) are equal to 80% of Hess’ nominations in each development plan that apply on a three-year rolling basis such that MVCs are set for the three years following the most recent nomination. Without our consent, the MVCs resulting from the nominated volumes for any quarter or year contained in any prior development plan shall not be reduced by any updated development plan unless dedicated production is released by us. The applicable MVCs may, however, be increased as a result of the nominations contained in any such updated development plan.
Minimum volume commitments expressed as percentage of related party nominations in development plans			80%
Initial term of agreement			10 years
Agreement description			each of our commercial agreements with Hess has an initial 10-year term effective January 1, 2014 (“Initial Term”).
Number of rights to extend the term of agreement			one
Advance period to call for extension of term of agreement			3 years
Secondary term of agreement			10 years
Hess | Amended and Restated Agreement for Certain Gas Gathering Sub-system
Related Party Transaction [Line Items]
Initial term of agreement			15 years
Agreement description			For this gathering sub-system, the Initial Term is 15 years effective January 1, 2014 and for the water services agreements the Initial Term is 14 years effective January 1, 2019.
Secondary term of agreement			5 years
Hess | Amended and Restated Water Services Agreements
Related Party Transaction [Line Items]
Initial term of agreement			14 years
Secondary term of agreement			10 years
Hess | Terminal and Export Services Agreement
Related Party Transaction [Line Items]
Commercial agreement period			20 years
Hess | Commercial Agreements Other Than Storage Services Agreement and Terminal and Export Services Agreement
Related Party Transaction [Line Items]
Minimum volume commitments, Description			During the Secondary Term of our commercial agreements, Hess will continue to have MVCs equal to 80% of Hess’ nominations in each development plan that apply on a three-year rolling basis through the Secondary Term.
Minimum volume commitments expressed as percentage of related party nominations in development plans			80%
Maximum consumer price index percentage			3%
Fee recalculation model description			the fee recalculation model under each applicable agreement will be replaced by an inflation-based fee structure. The initial fee for the first year of the Secondary Term will be determined based on the average fees paid by Hess under the applicable agreement during the last three years of the Initial Term (with such fees adjusted for inflation through the first year of the Secondary Term). For each year following the first year of the Secondary Term, the applicable fee will be adjusted annually based on the percentage change in the consumer price index, provided that we may not increase any fee by more than 3% in any calendar year solely by reason of an increase in the consumer price index, and no fee will ever be reduced below the amount of the applicable fee payable by Hess in the prior year as a result of a decrease in the consumer price index.
Targa Resources Corp. | LM4
Related Party Transaction [Line Items]
Percentage of ownership in joint venture	50%		50%

Related Party Transactions - Su

Related Party Transactions - Summary of Revenues From Contracts With Customers on Disaggregated Basis (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	$ 361.3	$ 334.2	$ 986.6	$ 959.3
Other income	1.8	0.6	5.5	1.3
Total revenues	363.1	334.8	992.1	960.6
Oil and Gas Gathering Services
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	170.5	160.5	467.8	454.2
Processing and Storage Services
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	132.2	121.7	367.6	352
Terminaling and Export Services
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	31.8	30.5	83.2	95.5
Water Gathering and Disposal Services
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	$ 26.8	$ 21.5	$ 68	$ 57.6

Related Party Transactions - _2

Related Party Transactions - Summary of MVC Shortfall Fees Earned (Detail) - Hess - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Related Party Transaction [Line Items]
Total MVC shortfall fees	$ 2.8	$ 27	$ 9.3	$ 118.6
Oil and Gas Gathering Services
Related Party Transaction [Line Items]
Total MVC shortfall fees	$ 2.8	20.1	6.4	71.9
Processing and Storage Services
Related Party Transaction [Line Items]
Total MVC shortfall fees			(0.3)	22.8
Terminaling and Export Services
Related Party Transaction [Line Items]
Total MVC shortfall fees		$ 6.9	$ 3.2	23.5
Water gathering disposal services
Related Party Transaction [Line Items]
Total MVC shortfall fees				$ 0.4

Related Party Transactions - _3

Related Party Transactions - Summary of Third-party Pass-through Costs for Which Revenues in Amount Equal to Costs are Recognized (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Related Party Transaction [Line Items]
Reimbursement revenue	$ 361.3	$ 334.2	$ 986.6	$ 959.3
Hess
Related Party Transaction [Line Items]
Total	25.1	22.1	61.2	64.7
Hess | Electricity and Other Related Fees
Related Party Transaction [Line Items]
Reimbursement revenue	13	12.7	35.5	35.2
Hess | Produced Water Trucking and Disposal Costs
Related Party Transaction [Line Items]
Reimbursement revenue	$ 12.1	$ 9.4	29.1	25.2
Hess | Rail Transportation Costs
Related Party Transaction [Line Items]
Reimbursement revenue			$ (3.4)	$ 4.3

Related Party Transactions - _4

Related Party Transactions - Summary of Classification of Charges between Operating and Maintenance Expenses and General and Administrative Expenses (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Related Party Transaction [Line Items]
Operating and maintenance expenses	$ 89.4	$ 79.6	$ 225	$ 213.9
Hess
Related Party Transaction [Line Items]
Operating and maintenance expenses	$ 18.7	$ 17.8	$ 56.1	$ 51.4
Operating Cost and Expense, Related Party, Type [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
General and administrative expenses	$ 4	$ 4	$ 11.7	$ 11.5
Selling, General, and Administrative Expenses, Related Party, Type [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Total	$ 22.7	$ 21.8	$ 67.8	$ 62.9

Related Party Transactions - _5

Related Party Transactions - Summary of Activity Related to Agreements with Related Party (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Related Party Transaction [Line Items]
Processing fee incurred	$ 89.4	$ 79.6	$ 225	$ 213.9
Earnings from equity investments	2	2.8	5.3	4.2
Distributions received from equity investments			7.8	7.5
LM4
Related Party Transaction [Line Items]
Processing fee incurred	$ 6.9	$ 6.7	$ 17.7	$ 15.9
Operating Cost and Expense, Related Party, Type [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Earnings from equity investments	$ 2	$ 2.8	$ 5.3	$ 4.2
Distributions received from equity investments	$ 3.4	$ 1.4	$ 7.8	$ 7.5

Property, Plant and Equipment -

Property, Plant and Equipment - Components of Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 4,747	$ 4,570.5
Accumulated depreciation	(1,539.2)	(1,397.7)
Property, plant and equipment, net	3,207.8	3,172.8
Logistics Facilities and Railcars
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 409.2	389.3
Logistics Facilities and Railcars | Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	20 years
Logistics Facilities and Railcars | Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	25 years
Storage Facilities
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 19.7	19.7
Storage Facilities | Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	20 years
Storage Facilities | Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	25 years
Other
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 28.2	25.5
Other | Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	20 years
Other | Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	25 years
Construction-In-Progress
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 209.7	136.3
Gathering Assets | Pipelines
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	22 years
Total property, plant and equipment, at cost	$ 1,646	1,591.7
Gathering Assets | Compressors, Pumping Stations and Terminals
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 946.5	923.1
Gathering Assets | Compressors, Pumping Stations and Terminals | Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	22 years
Gathering Assets | Compressors, Pumping Stations and Terminals | Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	25 years
Gas Plant Assets | Pipelines, Pipes and Valves
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 460	460
Gas Plant Assets | Pipelines, Pipes and Valves | Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	22 years
Gas Plant Assets | Pipelines, Pipes and Valves | Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	25 years
Gas Plant Assets | Equipment
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 428.2	428.2
Gas Plant Assets | Equipment | Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	12 years
Gas Plant Assets | Equipment | Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	30 years
Gas Plant Assets | Processing and Fractionation Facilities
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	25 years
Total property, plant and equipment, at cost	$ 417.2	414.4
Gas Plant Assets | Buildings
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	35 years
Total property, plant and equipment, at cost	$ 182.3	$ 182.3

Accrued Liabilities - Schedule

Accrued Liabilities - Schedule of Accrued Liabilities (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Accrued Liabilities, Current [Abstract]
Accrued interest	$ 29	$ 35.4
Accrued capital expenditures	28.9	24.1
Other accruals	31.3	23.4
Total	$ 89.2	$ 82.9

Debt and Interest Expense - Add

Debt and Interest Expense - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2023 USD ($)
Debt Instrument [Line Items]
Debt covenant, leverage ratio	550%
Ratio of debt to EBITDA	500%
Secured leverage ratio - Maximum	400%
Debt instrument covenant, description	The Credit Facilities contain representations and warranties, affirmative and negative covenants and events of default that the Partnership considers to be customary for an agreement of this type, including a covenant that requires the Partnership to maintain a ratio of total debt to EBITDA (as defined in the Credit Facilities) for the prior four fiscal quarters of not greater than 5.00 to 1.00 as of the last day of each fiscal quarter (5.50 to 1.00 during the specified period following certain acquisitions) and, prior to the Partnership obtaining an investment grade credit rating, a ratio of secured debt to EBITDA for the prior four fiscal quarters of not greater than 4.00 to 1.00 as of the last day of each fiscal quarter.
Carrying Value
Debt Instrument [Line Items]
Total debt	$ 3,148,300,000
Level 2
Debt Instrument [Line Items]
Total debt fair value	$ 2,954,500,000
Credit Facility
Debt Instrument [Line Items]
Credit facility - maturity year	2027
Maximum borrowing capacity	$ 1,400,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility - Term	5 years
Maximum borrowing capacity	$ 1,000,000,000
Borrowings	$ 276,000,000
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Interest rate applicable margin	1.375%
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Interest rate applicable margin	2.05%
Term Loan A Facility
Debt Instrument [Line Items]
Credit facility - Term	5 years
Maximum borrowing capacity	$ 400,000,000
Borrowings	$ 400,000,000
Term Loan A Facility | Minimum
Debt Instrument [Line Items]
Interest rate applicable margin	1.65%
Term Loan A Facility | Maximum
Debt Instrument [Line Items]
Interest rate applicable margin	2.55%
Fixed-Rate Senior Unsecured Notes
Debt Instrument [Line Items]
Debt covenant, leverage ratio	425%
5.500% Fixed Rate Senior Unsecured Notes due 2030
Debt Instrument [Line Items]
Aggregate principal amount of fixed-rate senior notes	$ 400,000,000
5.500% Fixed Rate Senior Unsecured Notes due 2030 | Fixed-Rate Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.50%
Debt instrument due year	2030
Frequency of periodic interest payment	semi‑annually
Interest payment terms	Interest is payable semi‑annually on April 15 and October 15.
4.250% Fixed Rate Senior Unsecured Notes due 2030
Debt Instrument [Line Items]
Aggregate principal amount of fixed-rate senior notes	$ 750,000,000
4.250% Fixed Rate Senior Unsecured Notes due 2030 | Fixed-Rate Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.25%
Debt instrument due year	2030
Frequency of periodic interest payment	semi‑annually
Interest payment terms	Interest is payable semi‑annually on February 15 and August 15.
5.625% Fixed Rate Senior Unsecured Notes due 2026
Debt Instrument [Line Items]
Aggregate principal amount of fixed-rate senior notes	$ 800,000,000
5.625% Fixed Rate Senior Unsecured Notes due 2026 | Fixed-Rate Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.625%
Debt instrument due year	2026
Frequency of periodic interest payment	semi‑annually
Interest payment terms	Interest is payable semi‑annually on February 15 and August 15.
5.125% Fixed Rate Senior Unsecured Notes due 2028
Debt Instrument [Line Items]
Aggregate principal amount of fixed-rate senior notes	$ 550,000,000
5.125% Fixed Rate Senior Unsecured Notes due 2028 | Fixed-Rate Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.125%
Debt instrument due year	2028
Frequency of periodic interest payment	semi‑annually
Interest payment terms	Interest is payable semi‑annually on June 15 and December 15.

Partners' Capital and Distrib_3

Partners' Capital and Distributions - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2023
Partners' Capital Notes [Abstract]
Period of cash distribution to shareholders	45 days

Partners' Capital and Distrib_4

Partners' Capital and Distributions - Schedule of Distributions Declared and Paid (Detail)	9 Months Ended
	Sep. 30, 2023 $ / shares
First Quarter 2022
Distribution Made To Limited Partner [Line Items]
Record Date	May 05, 2022
Distribution Date	May 13, 2022
Distribution per Class A Share	$ 0.5492
Second Quarter 2022
Distribution Made To Limited Partner [Line Items]
Record Date	Aug. 04, 2022
Distribution Date	Aug. 12, 2022
Distribution per Class A Share	$ 0.5559
Third Quarter 2022
Distribution Made To Limited Partner [Line Items]
Record Date	Nov. 03, 2022
Distribution Date	Nov. 14, 2022
Distribution per Class A Share	$ 0.5627
Fourth Quarter 2022
Distribution Made To Limited Partner [Line Items]
Record Date	Feb. 02, 2023
Distribution Date	Feb. 13, 2023
Distribution per Class A Share	$ 0.5696
First Quarter 2023
Distribution Made To Limited Partner [Line Items]
Record Date	May 04, 2023
Distribution Date	May 12, 2023
Distribution per Class A Share	$ 0.5851
Second Quarter 2023
Distribution Made To Limited Partner [Line Items]
Record Date	Aug. 03, 2023
Distribution Date	Aug. 14, 2023
Distribution per Class A Share	$ 0.6011
Third Quarter 2023
Distribution Made To Limited Partner [Line Items]
Record Date	Nov. 02, 2023	[1]
Distribution Date	Nov. 14, 2023	[1]
Distribution per Class A Share	$ 0.6175
[1] For more information, see Note 12, Subsequent Events.

Earnings per Share - Additional

Earnings per Share - Additional Information (Detail) - Class A Shares - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Dilutive Restricted Shares
Limited Partners Capital Account [Line Items]
Weighted average number shares	34,752	58,300	38,319	70,262
Hess and GIP
Limited Partners Capital Account [Line Items]
Conversion of Class B units and Class B shares into Class A shares			100%

Earnings per Share - Schedule o

Earnings per Share - Schedule of Earnings per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Limited Partners Capital Account [Line Items]
Net income	$ 164.8	$ 147.9	$ 142.2	$ 159.4	$ 151.8	$ 159.6	$ 454.9	$ 470.8
Less: Net income attributable to noncontrolling interest	129.5			136.2			373.8	408.7
Net income attributable to Hess Midstream LP	$ 35.3			$ 23.2			$ 81.1	$ 62.1
Class A Shares
Net income attributable to Hess Midstream LP per Class A share:
Net income attributable to Hess Midstream LP per Class A share, Basic	$ 0.57			$ 0.53			$ 1.56	$ 1.54
Net income attributable to Hess Midstream LP per Class A share, Diluted	$ 0.57			$ 0.53			$ 1.54	$ 1.52
Weighted average Class A shares outstanding
Weighted average Class A shares outstanding, Basic	62.5			44			52.2	40.5
Weighted average Class A shares outstanding, Diluted	62.5			44.1			52.2	40.5

Concentration of Credit Risk -

Concentration of Credit Risk - Additional Information (Detail) - Customer Concentration Risk	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	100%	100%	100%	100%
Revenue
Concentration Risk [Line Items]
Concentration risk, percentage	100%	100%	100%	100%

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2023 USD ($) Barrels	Dec. 31, 2022 USD ($)
Commitments and Contingencies Disclosure [Abstract]
No of produced water released | Barrels	34,000
Estimated remediation liabilities included in accrued liabilities	$ 1,300,000	$ 1,400,000
Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration]	Accrued Liabilities, Current	Accrued Liabilities, Current
Estimated remediation liabilities included in other noncurrent liabilities	$ 6,100,000	$ 4,300,000
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Accrued liabilities for legal contingencies	$ 0	$ 0

Segments - Additional Informati

Segments - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2023 Segment
Segment Reporting [Abstract]
Number of reportable segments	3

Segments - Financial Data for E

Segments - Financial Data for Each Reportable Segment (Detail) - USD ($) $ in Millions		3 Months Ended							9 Months Ended
		Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022		Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023		Sep. 30, 2022
Segment Reporting Information [Line Items]
Revenues and other income		$ 363.1			$ 334.8				$ 992.1		$ 960.6
Net income (loss)		164.8	$ 147.9	$ 142.2	159.4		$ 151.8	$ 159.6	454.9		470.8
Net income (loss) attributable to Hess Midstream LP		35.3			23.2				81.1		62.1
Depreciation expense		47.7			45.5				142.1		134.9
Proportional share of equity affiliates' depreciation		1.3			1.3				3.9		3.9
Income from equity investments		2			2.8				5.3		4.2
Interest expense, net		45.8			39.9				131.2		108.6
Income tax expense		11.4			7.5				26		19.6
Adjusted EBITDA		271			253.6				758.1		737.8
Capital expenditures		64.5			60.6	[1]			173.9	[1]	169.4	[1]
Interest and Other
Segment Reporting Information [Line Items]
Net income (loss)		(59.2)			(49.1)				(163.7)		(133.7)
Net income (loss) attributable to Hess Midstream LP		(24)			(14.9)				(56.4)		(38.7)
Interest expense, net		45.8			39.9				131.2		108.6
Income tax expense		11.4			7.5				26		19.6
Adjusted EBITDA		(2)			(1.7)				(6.5)		(5.5)
Gathering Opco | Operating Segments
Segment Reporting Information [Line Items]
Revenues and other income		197.5			182				536.7		511.8
Net income (loss)		113.6			103.4				308.7		296.8
Net income (loss) attributable to Hess Midstream LP		30			18.9				68.7		49.5
Depreciation expense		28.9			26.9				85.9		79.4
Adjusted EBITDA		142.5			130.3				394.6		376.2
Capital expenditures		60.3			55.8	[1]			156.1	[1]	159.2	[1]
Processing and Storage | Operating Segments
Segment Reporting Information [Line Items]
Revenues and other income		133.2			121.7				370.4		352
Net income (loss)		92.8			83.9				258		243.3
Net income (loss) attributable to Hess Midstream LP		24.5			15.2				57.3		40.6
Depreciation expense		14.5			14.5				43.5		43.3
Proportional share of equity affiliates' depreciation		1.3			1.3				3.9		3.9
Income from equity investments		2			2.8				5.3		4.2
Adjusted EBITDA		108.6			99.7				305.4		290.5
Capital expenditures		4.2			2.6	[1]			7.8	[1]	4.8	[1]
Terminaling and Export | Operating Segments
Segment Reporting Information [Line Items]
Revenues and other income		32.4			31.1				85		96.8
Net income (loss)		17.6			21.2				51.9		64.4
Net income (loss) attributable to Hess Midstream LP		4.8			4				11.5		10.7
Depreciation expense		4.3			4.1				12.7		12.2
Adjusted EBITDA		$ 21.9			25.3				64.6		76.6
Capital expenditures	[1]				$ 2.2				$ 10		$ 5.4
[1] Includes acquisition, expansion and maintenance capital expenditures, as applicable.

Segments - Total Assets for Rep

Segments - Total Assets for Reportable Segments (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Total assets	$ 3,775.5	$ 3,588.2
Interest and Other
Segment Reporting Information [Line Items]
Total assets	341.8	191.2
Gathering Opco | Operating Segments
Segment Reporting Information [Line Items]
Total assets	2,103	2,022
Processing and Storage | Operating Segments
Segment Reporting Information [Line Items]
Total assets	1,061.1	1,099.2	[1]
Terminaling and Export | Operating Segments
Segment Reporting Information [Line Items]
Total assets	$ 269.6	$ 275.8
[1] Includes investment in equity investees of $ 91.4 million as of September 30, 2023 and $ 93.9 million as of December 31, 2022 .

Segments - Total Assets for R_2

Segments - Total Assets for Reportable Segments (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Processing and Storage
Segment Reporting Information [Line Items]
Cash contributed to acquire equity investments	$ 91.4	$ 93.9

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - $ / shares		3 Months Ended
	Oct. 23, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Oct. 22, 2023
Subsequent Event [Line Items]
Distributions to unitholders - per unit/share		$ 0.6011	$ 0.5851	$ 0.5696	$ 0.5559	$ 0.5492	$ 0.5167
Subsequent Event
Subsequent Event [Line Items]
Distributions to unitholders decalred date	Oct. 23, 2023
Distribution payable date	Nov. 14, 2023
Distributions to unitholders record date	Nov. 02, 2023
Distribution made to limited partner, approximate increase in percentage than prior year quarter declared	2.70%
Subsequent Event | Chevron Corporation
Subsequent Event [Line Items]
Percentage of ownership								37.80%
Subsequent Event | Class A Shares
Subsequent Event [Line Items]
Quarterly cash distribution declared per share	$ 0.6175
Subsequent Event | Class B Shares
Subsequent Event [Line Items]
Distributions to unitholders - per unit/share	$ 0.6175