Hess Midstream (HESM) 10-K 29 Feb 24 2023 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2023	Feb. 08, 2024	Jun. 30, 2023
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Trading Symbol	HESM
Entity Registrant Name	Hess Midstream LP
Entity Central Index Key	0001789832
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		79,867,647
Entity Public Float			$ 1.7
Entity Interactive Data Current	Yes
ICFR Auditor Attestation Flag	true
Title of 12(b) Security	Class A shares representing limited partner interests
Security Exchange Name	NYSE
Entity File Number	001-39163
Entity Incorporation, State or Country Code	DE
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
Document Annual Report	true
Document Transition Report	false
Document Financial Statement Error Correction [Flag]	false
Auditor Name	Ernst & Young LLP
Auditor Location	Houston, Texas
Auditor Firm ID	42

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Assets
Cash and cash equivalents	$ 5.4	$ 3.1
Accounts receivable from contracts with customers:
Accounts receivable-trade	1.9	0.3
Accounts receivable-affiliate	$ 122.5	$ 122.7
Accounts Receivable, after Allowance for Credit Loss, Current, Related Party, Name [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Other current assets	$ 7	$ 6.2
Total current assets	136.8	132.3
Equity investments	90.2	93.9
Property, plant and equipment, net	3,229.2	3,172.8
Long-term receivable—affiliate	0.3	0.7
Deferred tax asset	324.4	177.2
Other noncurrent assets	8.6	11.3
Total assets	3,789.5	3,588.2
Liabilities
Accounts payable—trade	38.5	35
Accounts payable-affiliate	$ 41.2	$ 27.7
Accounts Payable, Current, Related Party, Name [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Accrued liabilities	$ 105.9	$ 82.9
Current maturities of long-term debt	12.5	2.5
Other current liabilities	12.1	11.4
Total current liabilities	210.2	159.5
Long-term debt	3,198.9	2,883.1
Deferred tax liability	0.5	0.5
Other noncurrent liabilities	16.7	16.1
Total liabilities	3,426.3	3,059.2
Partners' capital
Total Class A and Class B partners' capital	340.2	245.1
Noncontrolling interest	23	283.9
Total partners' capital	363.2	529
Total liabilities and partners' capital	3,789.5	3,588.2
Class A Shares
Partners' capital
Common unitholders	$ 340.2	$ 245.1

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares	Dec. 31, 2023	Dec. 31, 2022
Common units outstanding	226,309,088	239,850,452
Class A Shares
Common units issued	68,367,647	44,002,846
Common units outstanding	68,367,647	44,002,846
Class B Shares
Common units issued	157,941,441	195,847,606
Common units outstanding	157,941,441	195,847,606

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues
Revenues	$ 1,346.1	$ 1,273.2	$ 1,203.8
Type of Revenue [Extensible List]	us-gaap:ServiceMember	us-gaap:ServiceMember	us-gaap:ServiceMember
Other income	$ 2.5	$ 2	$ 0
Total revenues	1,348.6	1,275.2	1,203.8
Costs and expenses
Operating and maintenance expenses (exclusive of depreciation shown separately below)	313	279.6	288.3
Depreciation expense	192.5	181.3	165.6
General and administrative expenses	26.2	23.1	22.7
Total operating costs and expenses	531.7	484	476.6
Income from operations	816.9	791.2	727.2
Income from equity investments	7.7	5.3	10.6
Interest expense, net	179	149.3	105.4
Income before income tax expense	645.6	647.2	632.4
Income tax expense	37.9	26.6	14.6
Net income	607.7	620.6	617.8
Less: Net income attributable to noncontrolling interest	489.1	536.7	571.4
Net income attributable to Hess Midstream LP	118.6	83.9	46.4
Affiliate services
Revenues
Revenues	1,338.1	1,273.2	1,203.8
Third-party services
Revenues
Revenues	$ 8	$ 0	$ 0
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	$ 2.11	$ 2.03	$ 1.81
Net income attributable to Hess Midstream LP per Class A share, Diluted	$ 2.08	$ 2.01	$ 1.76
Weighted average Class A shares outstanding
Weighted average Class A shares outstanding, Basic	56.2	41.3	25.6
Weighted average Class A shares outstanding, Diluted	56.3	41.4	25.7

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 607.7	$ 620.6	$ 617.8

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($) $ in Millions	Total	Limited Partner Class A Shares	Noncontrolling Interest
Balance, beginning of period at Dec. 31, 2020	$ 1,326	$ 125	$ 1,201
Net income	617.8	46.4	571.4
Equity-based compensation	1.4	1.4
Distributions to unitholders	(529)	(49.4)	(479.6)
Recognition of Deferred Tax Asset	89	89
Sale of shares held by Sponsors		52.4	(52.4)
Class B unit repurchase	(750)	(60.4)	(689.6)
Transaction costs	(2.1)	(0.3)	(1.8)
Balance, end of period at Dec. 31, 2021	753.1	204.1	549
Net income	620.6	83.9	536.7
Equity-based compensation	1.6	1.6
Distributions to unitholders	(531.2)	(91)	(440.2)
Recognition of Deferred Tax Asset	86.4	86.4
Sale of shares held by Sponsors		27	(27)
Class B unit repurchase	(400)	(66.6)	(333.4)
Transaction costs	(1.5)	(0.3)	(1.2)
Balance, end of period at Dec. 31, 2022	529	245.1	283.9
Net income	607.7	118.6	489.1
Equity-based compensation	1.7	1.7
Distributions to unitholders	(557)	(127.5)	(429.5)
Recognition of Deferred Tax Asset	185.1	185.1
Sale of shares held by Sponsors		17.8	(17.8)
Class B unit repurchase	(400)	(99.8)	(300.2)
Transaction costs	(3.3)	(0.8)	(2.5)
Balance, end of period at Dec. 31, 2023	$ 363.2	$ 340.2	$ 23

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Distributions to unitholders - per unit/share	$ 2.3733	$ 2.1845	$ 1.9143

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities
Net income	$ 607.7	$ 620.6	$ 617.8
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation expense	192.5	181.3	165.6
Income from equity investments	(7.7)	(5.3)	(10.6)
Distributions from equity investments	11.4	13	17.4
Amortization of deferred financing costs	8.4	8.8	7.3
Equity-based compensation expense	1.7	1.6	1.4
Deferred income tax expense	37.9	26.6	14.6
Changes in assets and liabilities:
Accounts receivable - trade	(1.6)
Accounts receivable – affiliate	0.6	(2.6)	(27)
Other current and noncurrent assets	(0.2)	3.5	(5.1)
Accounts payable – trade	3.5	8.1	(3.1)
Accounts payable – affiliate	10.1	(5.8)	9.7
Accrued liabilities	4	9.1	9.2
Other current and noncurrent liabilities	(1.9)	2.2	(1.7)
Net cash provided by operating activities	866.4	861.1	795.5
Cash flows from investing activities
Additions to property, plant and equipment	(223.5)	(238.2)	(163.2)
Net cash used in investing activities	(223.5)	(238.2)	(163.2)
Cash flows from financing activities
Net proceeds from (repayments of) bank borrowings with maturities of 90 days or less	322	(86)	(80)
Bank borrowings with maturities of greater than 90 days
Borrowings		20
Repayments	(2.5)	(10)	(10)
Proceeds from issuance of senior notes		400	750
Deferred financing costs		(13.3)	(11.6)
Transaction costs	(3.1)	(1.5)	(2.1)
Class B unit repurchase	(400)	(400)	(750)
Distributions to shareholders/unitholders	(127.5)	(91)	(49.4)
Distributions to noncontrolling interest	(429.5)	(440.2)	(479.6)
Net cash used in financing activities	(640.6)	(622)	(632.7)
Increase (decrease) in cash and cash equivalents	2.3	0.9	(0.4)
Cash and cash equivalents, beginning of period	3.1	2.2	2.6
Cash and cash equivalents, end of period	5.4	3.1	2.2
Supplemental disclosure of non-cash investing and financing activities:
(Increase) decrease in accrued capital expenditures and related liabilities	(22.2)	6.5	(19.8)
Recognition of deferred tax asset	$ 185.1	86.4	89
Tioga System Acquisition contingent liability adjustment		$ (2.9)	$ (4.1)

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pay vs Performance Disclosure
Net Income (Loss)	$ 118.6	$ 83.9	$ 46.4

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Dec. 31, 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

Description of Business

Description of Business	12 Months Ended
	Dec. 31, 2023
Description Of Business [Abstract]
Description of Business	Note 1. Descr iption of Business Description of Business. We are a fee-based, growth-oriented, Delaware limited partnership formed by Hess Infrastructure Partners GP LLC, the general partner of Hess Infrastructure Partners LP (“HIP”), and our general partner to own, operate, develop and acquire a diverse set of midstream assets and provide fee-based services to Hess and third-party customers. HIP was originally formed in 2015 as a 50 / 50 joint venture between Hess and Global Infrastructure Partners (“GIP” and, together with Hess, the “Sponsors”). We are managed and controlled by Hess Midstream GP LLC, the general partner of our general partner. On April 10, 2017, we completed an initial public offering (“IPO”) as a master limited partnership, pursuant to which HIP contributed to the Partnership a 20 % controlling economic interest in each of (i) Hess North Dakota Pipelines Operations LP; (ii) Hess TGP Operations LP; and (iii) Hess North Dakota Export Logistics Operations LP (collectively, the “Joint Interest Assets”) and a 100 % interest in Hess Mentor Storage Holdings LLC. HIP owned the remaining 80 % economic interest in the Joint Interest Assets, a 100 % interest in certain other businesses, including Hess’ Bakken water services business (“Hess Water Services”), which it acquired from Hess on March 1, 2019, and a 100 % interest in Hess Midstream Partners GP LP (“MLP GP LP”), which held all of the Partnership’s outstanding incentive distribution rights and the general partner interest in the Partnership, and controlled the Partnership. On December 16, 2019, the Company and the Partnership completed the transactions (the “Restructuring”) contemplated by the Partnership Restructuring Agreement, dated October 3, 2019, by and among the Company, the Partnership and the other parties thereto. Pursuant to the Restructuring, the Partnership acquired HIP, including HIP’s 80 % interest in the Joint Interest Assets, 100 % interest in Hess Water Services and the outstanding economic general partner interest and incentive distribution rights in the Partnership. The Partnership’s organizational structure converted from a master limited partnership into an “Up-C” structure in which the Partnership’s public unitholders received newly issued Class A Shares in the Company in a one-for-one exchange. Class A Shares commenced trading on the New York Stock Exchange under the former symbol “HESM” on December 17, 2019. As a result of the Restructuring, the Company was delegated control of the Partnership and replaced the Partnership as its publicly traded successor. The Partnership changed its name to “Hess Midstream Operations LP” and became a consolidated subsidiary of the Company. After consummation of the Restructuring, the Sponsors and their affiliates own an aggregate of 898,000 Class A shares in the Company, all of the Class B units representing noncontrolling limited partner interests in the Partnership, 100 % interest in the general par tner of the Company and, through their ownership of the general partner, continue to have the right to elect the entire board of directors. 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 subject to shareholder and regulatory approvals and other closing conditions. Upon consummation of the proposed transaction, Chevron will acquire Hess’ 37.8 % ow nership in the Company, including its right to appoint four directors to the Company’s Board. The Company’s contract structure remains in place. Our assets are primarily located in the Bakken and Three Forks shale plays in the Williston Basin area of North Dakota, which we collectively refer to as the Bakken. Our assets and operations are organized into the following three segments: (i) gathering, (ii) processing and storage and (iii) terminaling and export (see Note 12 , Segments ). Significant Activities. In 2023, we added 70 MMcf/d of compression capacity by constructing one new greenfield compressor station and expanding an existing compressor station. Construction was also completed on an additional greenfield compressor station that, once put into operation in early 2024, will further increase compression capacity by approximately 30 MMcf/d. In 2022, we brought online two new greenfield compressor stations. In aggregate, the new stations provide an additional 85 MMcf/d of installed capacity and can be expanded up to 130 MMcf/d in the future. In 2020, we completed construction of a 150 MMcf/d natural gas processing capacity expansion at our Tioga Gas Plant (“TGP”). In the third quarter of 2021, we safely and successfully completed the planned maintenance turnaround at TGP, during which a series of plant tie-ins for the TGP expansion were also completed. The expansion was placed in service in October 2021. Total processing capacity of 400 MMcf/d became available concurrent with the completion of a third-party residue export expansion in February 2022. LM4 Joint Venture. On January 25, 2018, we entered into a 50 / 50 joint venture with Targa Resources Corp. (“Targa”) to construct a new 200 MMcf/d gas processing plant called Little Missouri 4 (“LM4”). LM4 was placed in service in the third quarter of 2019. Targa is the operator of the plant. See Note 4 , Related Party Transactions .

Summary of Significant Accounti

Summary of Significant Accounting Policies and Basis of Presentation	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Summary of Significant Accounting Policies and Basis of Presentation	Note 2. Summary of Sign ificant Accounting Policies and Basis of Presentation Consolidation . The consolidated financial statements include our accounts and the accounts of entities over which we have a controlling financial interest through our ownership or the majority voting interests of the entity. We consolidate the activities of the Partnership as a variable interest entity (“VIE”) under U.S. Generally Accepted Accounting Principles (“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 12 , Segments ). At December 31, 2023, our noncontrolling interest represents the 69.8 % interest in the Partnership retained by Hess and GIP (2022: 81.7 % ) . All intercompany transactions and balances have been eliminated. Use of Estimates. We prepare our consolidated financial statements in conformity with the U.S. GAAP, which require management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the years presented. Changes in facts and circumstances may result in revised estimates and actual results could differ from those estimates. Cash and Cash Equivalents. Cash equivalents consist of highly liquid investments, which are readily convertible into cash and have maturities of three months or less when acquired. Accounts Receivable – Trade . Trade accounts receivable represent valid claims against nonaffiliated customers for services rendered. We present accounts receivable net of an allowance for credit losses to reflect the net amount expected to be collected. There were no doubtful accounts written off, nor have we provided an allowance for credit losses, as of December 31, 2023 and 2022. Accounts Receivable – Affiliate. We record affiliate accounts receivable upon performance of services to affiliated companies. Generally, we receive payments from affiliated companies on a monthly basis, shortly after performance of services. There were no doubtful accounts written off, nor have we provided an allowance for doubtful accounts, as of December 31, 2023 and 2022. Property, Plant and Equipment. Property, plant and equipment are stated at the lower of historical cost less accumulated depreciation subject to the results of impairment testing. We capitalize all construction-related direct labor and material costs, as well as indirect construction costs. Indirect construction costs include general engineering, taxes and the cost of funds used during construction. Costs, including complete asset replacements and enhancements or upgrades that increase the original efficiency, productivity or capacity of property, plant and equipment, are also capitalized. The costs of repairs, minor replacements and other projects, which do not increase the original efficiency, productivity or capacity of property, plant and equipment, are expensed as incurred. Capitalization of Interest. Interest charges from borrowings are capitalized on material projects using the weighted average cost of outstanding borrowings until the project is substantially complete and ready for its intended use. Capitalized interest is depreciated over the useful lives of the assets in the same manner as the depreciation of the underlying assets. Impairment of Long‑Lived Assets. We review long-lived assets for impairment whenever events or changes in business circumstances indicate the net book values of the assets may not be recoverable. Factors that indicate potential impairment include a significant decrease in the market value of the asset, operating or cash flow losses associated with the use of the asset, and a significant change in the asset’s physical condition or use. Impairment is indicated when the undiscounted cash flows estimated to be generated by those assets are less than the assets’ net book value. Undiscounted cash flows are based on identifiable cash flows that are largely independent of the cash flows of other assets and liabilities. If impairment occurs, a loss is recognized for the difference between the fair value and net book value. Such fair value is generally determined by discounting anticipated future net cash flows, an income valuation approach, or by a market-based valuation approach, which are Level 3 fair value measurements. No impairments of long‑lived assets were recorded during the years ended December 31, 2023, 2022 and 2021. Leases . We determine if an arrangement is a lease at inception. Operating lease right-of-use assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease right-of-use assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The operating lease right-of-use asset includes any initial direct costs and excludes lease incentives received. The lease term used in measurement of our lease obligations may include periods covered by an option to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. The Company has elected not to recognize lease assets and lease liabilities for leases with a term of 12 months or less for all classes of underlying assets. Our lease agreements may include lease and non-lease components, which are generally accounted for separately. Equity Investments. We account for our investment in LM4 under the equity method of accounting, as we do not control, but have a significant influence over, its operations. Difference in the basis of the investment and the underlying net asset value of the equity investee is amortized into net income over the remaining useful lives of the underlying assets. Earnings from equity investments represent our proportionate share of net income generated by the equity investee. We classify distributions received from equity method investees on the basis of the nature of the activity of the investee that generated the distribution as either a return on investment classified as cash inflows from operating activities or a return of investment classified as cash inflows from investing activities when such information is available to us. Deferred Financing Costs. We capitalize debt issuance costs and fees incurred related to the procurement of our credit facilities. We amortize such costs as additional interest expense over the life of the credit agreement using the straight-line method, which approximates the effective interest method. Unamortized deferred financing costs related to our revolving credit facility are presented in Other noncurrent assets (2023: $ 7.4 million, 2022: $ 9.5 million) and unamortized deferred financing costs and discounts related to our fixed-rate senior notes and our term loan are presented as a direct reduction to the Long-term debt (2023: $ 26.1 million, 2022: $ 32.4 million) in the accompanying consolidated balance sheets. Asset Retirement Obligations. We record legal obligations to remove and dismantle long-lived assets. We recognize a liability for the fair value of legally required asset retirement obligations associated with long-lived assets in the period in which the retirement obligations are incurred if the liability can be reasonably estimated. The associated asset retirement costs are capitalized as part of the carrying amount of the long-lived assets. Accretion expense is included in Depreciation expense in the consolidated statement of operations. At December 31, 2023, the asset retirement obligation balance included in Other noncurrent liabilities was $ 10.9 million and the current portion included in Accrued liabilities was $ 3.0 million (2022: $ 10.8 million and $ 3.0 million, respectively). Revenue Recognition—Contracts with Customers. We earn substantially all of our revenues by charging fees for gathering, compressing and processing natural gas and fractionating NGLs; gathering, terminaling, loading and transporting crude oil and NGLs, gathering and disposing produced water, and storing and terminaling propane. We do not own or take title to the volumes that we handle. Effective January 1, 2014, we entered into (i) gas gathering, (ii) crude oil gathering, (iii) gas processing and fractionation, (iv) storage services and (v) terminal and export services fee‑based commercial agreements with certain subsidiaries of Hess, and effective January 1, 2019, we entered into water gathering and disposal services fee-based agreements with a subsidiary of Hess. Our responsibilities to provide each of the above services for each year under each of the commercial agreements are considered separate, distinct performance obligations. We recognize revenues for each performance obligation under our commercial agreements over‑time as services are rendered using the output method, measured using the amount of volumes serviced during the period. The minimum volume commitments are subject to fluctuation based on nominations covering substantially all of Hess’ production and projected third-party volumes that will be purchased by Hess in the Bakken. As the minimum volume commitments are subject to fluctuation, and these commercial agreements contain fee inflation escalators and fee recalculation mechanisms, substantially all of the transaction price, as this term is defined in Accounting Standards Codification (“ASC”) Topic, ASC 606, is variable at inception of each of the commercial agreements. As the variability is resolved prior to the recognition of revenue, we do not apply a constraint to the transaction price at the inception of the commercial agreements. We elected the practical expedient to recognize revenue in the amount to which we have a right to invoice as permitted under ASC 606. Due to this election and as the transaction price allocated to our unsatisfied performance obligations is entirely variable, we have elected the exemption provided by ASC 606 from the disclosure of revenue recognizable in future periods as our unsatisfied performance obligations are fulfilled. There are no significant financing components in any of our commercial agreements. The minimum volumes that Hess provides to our assets under our commercial agreements include dedicated production covering substantially all of Hess’ existing and future owned or controlled production in the Bakken and projected third-party volumes owned or controlled by Hess through dedicated third-party contracts. If Hess delivers volumes less than the applicable minimum volume commitments under our commercial agreements during any quarter, Hess is obligated to pay us a shortfall fee equal to the volume deficiency multiplied by the related gathering, processing and/or terminaling fee, as applicable. Our responsibility to stand-ready to service a minimum volume over each quarterly commitment period represents a separate, distinct performance obligation. Currently, and for the remainder of the Initial Term of each commercial agreement as described in Note 4, volume deficiencies are measured quarterly and recognized as revenue in the same period, as any associated shortfall payments are not subject to future reduction or offset. During the Secondary Term of each commercial agreement as described in Note 4, Hess will be entitled to receive a credit, calculated in barrels or Mcf, as applicable, with respect to the amount of any shortfall fee paid by Hess, which will initially be reported in deferred revenue. Hess may apply such credit against the fees payable for any volumes delivered to us under the applicable agreement in excess of Hess’ nominated volumes up to four quarters after such credit is earned. Unused credits by Hess will be recognized as revenue when they expire after four quarters. However, Hess will not be entitled to receive any such credit with respect to crude oil terminaling services under our terminal and export services agreement or water handling services under our water gathering and disposal services agreements. In addition, we provide gathering and processing services directly to third-party customers. We recognize revenues for each performance obligation under our direct contracts with third-party customers over-time as services are rendered using the output method, measured using the amount of volumes serviced during the period . Our revenues also include pass‑through third‑party rail transportation costs, third-party produced water trucking and disposal costs, electricity fees and certain other fees for which we recognize revenues in an amount equal to the costs. Depreciation Expense. We calculate depreciation using the straight-line method based on the estimated useful lives after considering salvage values of our assets. Depreciation lives range from 12 to 35 years . However, factors such as maintenance levels, economic conditions impacting the demand for these assets, and regulatory or environmental requirements could cause us to change our estimates, thus impacting the future calculation of depreciation. Income Taxes . Deferred income taxes are determined using the liability method and reflect temporary differences between the financial statement carrying amount and income tax basis of assets and liabilities recorded using the statutory income tax rate. Regular assessments are made of the likelihood of those deferred tax assets being realized. If it is more likely than not that some or all of the deferred tax assets will not be realized, a valuation allowance is established to reduce the deferred tax assets to the amount expected to be realized. Environmental and Legal Contingencies. We accrue and expense environmental costs on an undiscounted basis to remediate existing conditions related to past operations when the future costs are probable and reasonably estimable. 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. Fair Value Measurements. We measure assets and liabilities requiring fair value presentation using an exit price (i.e., the price that would be received to sell an asset or paid to transfer a liability) and disclose such amounts according to the level of valuation inputs under the following hierarchy: Level 1: Quoted prices in an active market for identical assets or liabilities. Level 2: Inputs other than quoted prices that are directly or indirectly observable. Level 3: Unobservable inputs that are significant to the fair value of assets or liabilities. The classification of an asset or liability within the fair value measurement hierarchy is based on the lowest level of input significant to its fair value. There were no nonrecurring fair value measurements during the years ended December 31, 2023 and 2022. We had other short‑term financial instruments, primarily cash and cash equivalents, accounts receivable and accounts payable, for which the carrying value approximated their fair value as of December 31, 2023 and 2022. New Accounting Pronouncements In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This ASU adds required disclosures of significant expenses for each reportable segment, as well as certain other disclosures to help users of financial statements understand how the chief operating decision maker evaluates segment expenses and operating results. The ASU does not change how an entity identifies its operating segments. The ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. We are currently assessing the impact of adopting this new ASU on our consolidated financial statements. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This ASU requires, among other disclosures, greater disaggregation of information, the use of certain categories in the rate reconciliation, and the disaggregation of income taxes paid by jurisdiction. The ASU is effective for public business entities for fiscal years beginning after December 15, 2024, and interim periods within fiscal years beginning after December 15, 2025, with early adoption permitted. We are currently assessing the impact of adopting this new ASU on our consolidated financial statements.

Equity Transactions

Equity Transactions	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Equity Transactions	Note 3. Equity Transactions Equity Offering Transactions During the years ended December 31, 2023, 2022 and 2021, our Sponsors sold the following aggregate number of our Class A shares representing limited partner interests (“Class A Shares”) in underwritten public offering transactions: Public Offering Date Number of Shares Offered Overallotment Option (1) Total Number of Shares Offered Public Offering Price (2) March 15, 2021 6,000,000 900,000 6,900,000 $ 21.00 October 8, 2021 7,500,000 1,125,000 8,625,000 $ 26.00 April 4, 2022 8,900,000 1,335,000 10,235,000 $ 29.50 May 19, 2023 11,100,000 1,665,000 12,765,000 $ 27.00 August 17, 2023 (3) 10,000,000 1,500,000 11,500,000 $ 28.80 (1) Overallotment options were exercised in full on the same date as the public offering date unless stated otherwise. (2) Public offering price excluding underwriting discounts. (3) The overallotment option for this transaction was exercised in full on August 22, 2023. The Sponsors received net proceeds from the 2023 equity offering transactions of approximately $ 662.2 million in total, after deducting underwriting discounts (2022: $ 291.7 million, 2021: $ 356.5 million in total, 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 in the Partnership, together with an equal number of our Class B Shares and, a s 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 2, Summary of Significant Accounting Policies and 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 (2022: $ 27.0 million, 2021: $ 52.4 m illion) and decreasing the carrying amount of noncontrolling interest by an equal amount to reflect the change in ownership interest. Class B Unit Repurchases For the years ended December 31, 2023, 2022 and 2021, we had the following activity related to Class B unit repurchases (aggregate purchase price in millions): Closing Date Number of Units Repurchased Aggregate Purchase Price Purchase Price August 10, 2021 31,250,000 $ 750.0 $ 24.00 April 4, 2022 13,559,322 $ 400.0 $ 29.50 March 30, 2023 3,619,254 $ 100.0 $ 27.63 June 29, 2023 3,350,084 $ 100.0 $ 29.85 September 22, 2023 3,301,420 $ 100.0 $ 30.29 November 16, 2023 3,370,407 $ 100.0 $ 29.67 On July 27, 2021, the Company, the Partnership and our Sponsors entered into a unit repurchase agreement pursuant to which the Partnership agreed to purchase from the Sponsors 31,250,000 Class B Units representing limited partner interests in the Partnership for an aggregate purchase price of $ 750.0 million. The purchase price per Class B Unit was $ 24.00 , representing an approximate 4 % discount to the 30-day volume weighted average trading price of Class A shares representing limited partner interests in the Company through July 27, 2021. The repurchase transaction closed on August 10, 2021 and was funded through issuance by the Partnership of $ 750.0 million aggregate principal amount of senior unsecured notes (see Note 7, Debt and Interest Expense ). 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 secondary equity offering transaction described above, an aggregate number of Class B Units representing limited partner interests in the Partnership 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 transaction described above. The repurchase transaction was funded using borrowings under the Partnership’s revolving credit facility, which were subsequently repaid with proceeds from an issuance by the Partnership of $ 400.0 million senior unsecured notes (see Note 7, 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 Sponsors 3,301,420 Class B Units for an aggregate purchase price of approximately $ 100.0 million. The repurchase transaction was consummated on September 22, 2023. The purchase price per Class B Unit was $ 30.29 , the closing price of the Class A Shares on September 19, 2023. On November 13, 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 3,370,407 Class B Units for an aggregate purchase price of approximately $ 100.0 million. The repurchase transaction was consummated on Novemb er 16, 2023. The purchase price per Class B Unit was $ 29.67 , t he closing price of the Class A Shares on November 13, 2023. The 2023 unit repurchase transactions were funded using borrowings under the Partnership’s existing revolving credit facility (see Note 7, 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 Class B Shares representing limited partner interests in the Company held by the Company’s general partner. 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 $ 3.3 million of costs directly attributable to the repurchase transaction (2022: $ 1.5 million, 2021: $ 2.1 million) that were charged to equity. As a result of the equity offering transactions and the repurchase transactions described above, we also recognized an additional deferred tax asset of $ 185.1 m illion (2022: $ 86.4 million, 2021: $ 89.0 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 transaction being characterized as a transaction among or with shareholders. See Note 8. Partners’ Capital and Distributions for the impact of the above equity transactions on the number of shares outstanding.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2023
Related Party Transactions [Abstract]
Related Party Transactions	Note 4. Related Party Transactions We are part of the consolidated operations of Hess, and substantially all of our revenues as shown on the accompanying consolidated statements of operations for the years ended December 31, 2023, 2022 and 2021 were derived from transactions with Hess and its affiliates. During the year ended December 31, 2023, we began providing our services directly to third-party customers and we plan to increase our services to third parties in the future. Hess also provides substantial operational and administrative services to us in support of our assets and operations. In addition, we had Class B unit repurchase transactions and distributions to the Sponsors, which are disclosed elsewhere in the Notes to consolidated financial statements. Commercial Agreements We have long-term fee-based commercial agreements with certain subsidiaries of Hess to provide i) gas gathering, ii) crude oil gathering, iii) gas processing and fractionation, iv) storage services, v) terminaling and export services, and (vi) water handling services. 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. 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 cannot 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. If Hess fails to deliver its applicable MVCs during any quarter, then Hess will pay us a shortfall fee equal to the volume of the deficiency multiplied by the applicable fee. Except for the water services agreements and except for a certain gathering sub-system as described below, each of our commercial agreements with Hess had 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 capped at 3 % in any calendar year 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). For certain crude oil gathering, terminaling, storage, gas processing and gas gathering commercial agreements with Hess, we exercised our renewal options to extend each of these commercial agreement for one additional 10 -year term (“Secondary Term”) effective January 1, 2024 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 gathering sub-system, the Secondary Term is 5 -years, and for the water services agreements the Secondary Term is 10 years, and we have the sole option to renew these remaining agreements for their Secondary Term that is exercisable at a later date. Upon the expiration of the Secondary Term, if any, the agreements will automatically renew for subsequent one-year periods unless terminated by either party no later than 180 days prior to the end of the applicable Secondary Term. Consistent with the existing terms of the commercial agreements, 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, MVCs will continue to be set at 80 % of Hess' nominated volumes in each development plan set three years in advance. Except for the crude oil terminaling and water handling services, Hess will be entitled to receive a credit, calculated in barrels or Mcf, as applicable, with respect to the amount of any shortfall fee paid by Hess and may apply such credit against any volumes delivered to us under the applicable agreement in excess of Hess’s nominated volumes during any of the following four quarters after such credit is earned, after which time any unused credits will expire. The shortfall amounts received under MVCs during the Secondary Term (except for the crude oil terminaling and water handling services) will be recorded as deferred revenue and recognized as revenue as the credits are utilized or expire. For the years ended December 31, 2023, 2022 and 2021, approximately 99 % , 100 % , and 100 % , respectively, 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. In 2023, we began providing our services directly to third-party customers. 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, including affiliated services and third-party services, on a disaggregated basis were as follows: Year Ended December 31, 2023 2022 2021 (in millions) Affiliate services Oil and gas gathering services $ 633.8 $ 600.8 $ 540.4 Processing and storage services 496.0 470.8 435.7 Terminaling and export services 114.4 124.5 137.5 Water gathering and disposal services 93.9 77.1 90.2 Total affiliate services $ 1,338.1 $ 1,273.2 $ 1,203.8 Third-party services 8.0 - - Total revenues from contracts with customers $ 1,346.1 $ 1,273.2 $ 1,203.8 Other income 2.5 2.0 - Total revenues $ 1,348.6 $ 1,275.2 $ 1,203.8 The following table presents MVC shortfall fees earned during each period: Year Ended December 31, 2023 2022 2021 (in millions) Oil and gas gathering services $ 8.2 $ 93.0 $ 43.0 Processing and storage services ( 0.3 ) 34.9 4.4 Terminaling and export services 3.2 32.0 32.8 Water gathering disposal services - 0.4 6.8 Total $ 11.1 $ 160.3 $ 87.0 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 consolidated statements of operations. Year Ended December 31, 2023 2022 2021 (in millions) Electricity and other related fees $ 47.8 $ 44.8 $ 50.3 Produced water trucking and disposal costs 38.5 33.1 37.0 Rail transportation costs ( 3.4 ) 3.5 0.1 Total $ 82.9 $ 81.4 $ 87.4 Omnibus and Employee Secondment Agreements We entered into an omnibus agreement with Hess under which we pay Hess on a monthly basis an amount equal to the total allocable costs of Hess’ employees and contractors, subcontractors or other outside personnel engaged by Hess and its subsidiaries to the extent such employees and outside personnel perform operational and administrative services for us in support of our assets, plus a specified percentage markup of such amount depending on the type of service provided, as well as an allocable share of direct costs of providing these services. We also entered into an employee secondment agreement with Hess under which certain employees of Hess are seconded to our general partner to provide services with respect to our assets and operations, including executive oversight, business and corporate development, unitholder and investor relations, communications and public relations, routine and emergency maintenance and repair services, routine operational services, routine administrative services, construction services, and such other operational, commercial and business services that are necessary to develop and execute the Company’s business strategy. On a monthly basis, we pay a secondment fee to Hess that is intended to cover and reimburse Hess for the total costs actually incurred by Hess and its affiliates in connection with employing the seconded employees to the extent such total costs are attributable to the provision of services with respect to the Company’s assets and operations. For the years ended December 31, 2023, 2022 and 2021, 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. Year Ended December 31, 2023 2022 2021 (in millions) Operating and maintenance expenses $ 79.7 $ 71.2 $ 63.6 General and administrative expenses 17.5 15.9 15.4 Total $ 97.2 $ 87.1 $ 79.0 LM4 Agreements Separately from our commercial agreements with Hess, effective January 24, 2018, we entered into a gas processing agreement with LM4, a 50 / 50 joint venture with Targa, under which we deliver natural gas to LM4, and LM4 processes and redelivers certain volumes of residue gas and NGLs resulting from such processing services. The agreement has a 16 -year initial term, after which it is automatically renewed for subsequent one-year terms unless terminated by either party . Under this agreement, 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. We are entitled to 50 % of the available processing capacity of the LM4 gas processing plant. Should Targa not use all of the remaining processing capacity at the plant on any day, such unutilized portion of the available capacity will be available for our use. Regardless of the actual portion of the plant available capacity utilized by each joint venture member during a given period, under the LM4 amended and restated limited liability company agreement, profits and losses and cash distributions of the LM4 joint venture are allocated 50 / 50 between Targa and us. LM4 was placed in service in the third quarter of 2019. For the years ended December 31, 2023, 2022 and 2021, we had the following activity related to our agreements with LM4: Year Ended December 31, 2023 2022 2021 (in millions) Processing fee incurred $ 24.0 $ 20.5 $ 27.7 Earnings from equity investments $ 7.7 $ 5.3 $ 10.6 Distributions received from equity investments $ 11.4 $ 13.0 $ 17.4

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Note 5. Property, Plant and Equipment Property, plant and equipment, at cost, is as follows: Estimated useful lives December 31, 2023 December 31, 2022 (in millions, except for number of years) Gathering assets Pipelines 22 years $ 1,703.7 $ 1,591.7 Compressors, pumping stations and terminals 22 to 25 years 1,026.4 923.1 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 424.7 414.4 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 19.9 19.7 Other 20 to 25 years 28.0 25.5 Construction-in-progress N/A 136.3 136.3 Total property, plant and equipment, at cost 4,818.7 4,570.5 Accumulated depreciation ( 1,589.5 ) ( 1,397.7 ) Property, plant and equipment, net $ 3,229.2 $ 3,172.8

Accrued Liabilities and Other C

Accrued Liabilities and Other Current Liabilities	12 Months Ended
	Dec. 31, 2023
Accrued Liabilities, Current [Abstract]
Accrued Liabilities and Other Current Liabilities	Note 6. Accrued Liabilities and Other Current Liabilities Accrued liabilities are as follows: December 31, 2023 December 31, 2022 (in millions) Accrued capital expenditures $ 42.9 $ 24.1 Accrued interest 35.8 35.4 Other accruals 27.2 23.4 Total $ 105.9 $ 82.9 Other current liabilities are as follows: December 31, 2023 December 31, 2022 (in millions) Property and sales and use tax payable $ 11.5 $ 10.7 Other current liabilities 0.6 0.7 Total $ 12.1 $ 11.4

Debt and Interest Expense

Debt and Interest Expense	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
Debt and Interest Expense	Note 7. Debt and Interest Expense Total long-term debt is as follows: December 31, 2023 December 31, 2022 (in millions) Fixed-rate senior notes: 5.625 % due 2026 $ 800.0 $ 800.0 5.125 % due 2028 550.0 550.0 4.250 % due 2030 750.0 750.0 5.500 % due 2030 400.0 400.0 Total fixed-rate senior notes 2,500.0 2,500.0 Term Loan A facility 397.5 400.0 Revolving credit facility 340.0 18.0 Total Borrowings 3,237.5 2,918.0 Unamortized deferred financing costs and discounts ( 26.1 ) ( 32.4 ) Total debt 3,211.4 2,885.6 Less: current maturities of long-term debt 12.5 2.5 Total long-term debt $ 3,198.9 $ 2,883.1 As of December 31, 2023, the maturity profile of total debt, excluding deferred financing costs and discounts, is as follows: (in millions) Total 2024 2025 2026 2027 2028 2029 and thereafter Fixed-rate senior notes $ 2,500.0 $ - $ - $ 800.0 $ - $ 550.0 $ 1,150.0 Term Loan facility 397.5 12.5 22.5 32.5 330.0 - - Revolving credit facility 340.0 - - - 340.0 - - Total debt (excluding interest) $ 3,237.5 $ 12.5 $ 22.5 $ 832.5 $ 670.0 $ 550.0 $ 1,150.0 Fixed‑Rate Senior Notes In April 2022, the Partnership issued $ 400.0 million aggregate principal amount of 5.500 % fixed-rate senior unsecured notes due 2030 to qualified institutional investors. Interest is payable semi‑annually on April 15 and October 15, commencing October 15, 2022. The Partnership used the proceeds to repay the borrowings under its revolving credit facility used to finance the 2022 repurchase transaction (see Note 3, Equity Transactions ). In August 2021, the Partnership issued $ 750.0 million aggregate principal amount of 4.250 % fixed‑rate senior unsecured notes due 2030 to qualified institutional investors. Interest is payable semi‑annually on February 15 and August 15 . The Partnership used the proceeds to fund the 2021 repurchase transaction (see Note 3 , Equity Transactions ). In December 2019, the Partnership issued $ 550.0 million aggregate principal amount of 5.125 % fixed‑rate senior unsecured notes due 2028 to qualified institutional investors. Interest is payable semi‑annually on June 15 and December 15. The Partnership used the net proceeds to finance the acquisition of HIP, including to repay borrowings under HIP’s credit facilities, and pay related fees and expenses. In December 2019, in connection with the Restructuring, the Partnership, assumed $ 800.0 million aggregate principal amount of 5.625 % outstanding fixed-rate senior notes of HIP in a par-for-par exchange for newly issued 5.625 % senior unsecured notes due 2026 of the Partnership. Interest is payable semi‑annually on February 15 and August 15. At December 31, 2023 and 2022, the Partnership’s fixed-rate senior unsecured notes had a weighted average interest rate of 5.1 % . The notes described above are guaranteed by certain subsidiaries of the Partnership. Each of the indentures for the senior 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 December 31, 2023, we were in compliance with all debt covenants under the indentures. In addition, the covenants included in the indentures governing the senior notes contain provisions that allow the Company to satisfy the Partnership’s reporting obligations under the indentures, 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 In July 2022, the Partnership amended and restated its existing credit agreement for its senior secured credit facilities (the “Credit Facilities”) consisting of a $ 1.0 billion 5 -year revolving credit facility and a fully drawn $ 400.0 million 5 ‑year Term Loan A facility. The amended and restated 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. At December 31, 2023, borrowings of $ 340.0 million were drawn and outstanding under the Partnership’s revolving credit facility, and borrowings of $ 397.5 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 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 December 31, 2023, the Partnership was in compliance with these financial covenants. Fair Value Measurement At December 31, 2023, our total debt had a carrying value of $ 3,211.4 million and had a fair value of approximately $ 3,143.3 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 December 31, 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. Interest Paid The total amount of interest paid on all fixed-rate senior notes and credit facilities, including facility fees, during the years ended December 31, 2023, 2022 and 2021 was $ 170.6 million, $ 136.8 million and $ 84.5 million, respectively.

Partners' Capital and Distribut

Partners' Capital and Distributions	12 Months Ended
	Dec. 31, 2023
Partners' Capital Notes [Abstract]
Partners' Capital and Distributions	Note 8. Partners’ Capital and Distributions Shares Outstanding As of December 31, 2023, our Sponsors and their affiliates, including our general partner, collectively held 898,000 Class A Shares (economic and voting) and 157,941,441 Class B Shares (non-economic, voting only) representing limited partner interests in the Company, and 157,941,441 Cl ass B Units of the Partnership representing limited partner interests in the Partnership. 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. The changes in the number of shares of the Company outstanding from December 31, 2020 through December 31, 2023 are as follows: Class A Shares Public Sponsors Total Class A Shares Class B Shares Total Class A and Class B Shares Balance, December 31, 2020 17,130,308 898,000 18,028,308 266,416,928 284,445,236 Equity-based compensation 118,760 - 118,760 - 118,760 Equity offering transaction - 6,900,000 - 6,900,000 ( 6,900,000 ) - Equity offering transaction - 8,625,000 - 8,625,000 ( 8,625,000 ) - Repurchase Transaction - - - ( 31,250,000 ) ( 31,250,000 ) Balance, December 31, 2021 32,774,068 898,000 33,672,068 219,641,928 253,313,996 Equity-based compensation 95,778 - 95,778 - 95,778 Equity offering transaction - 10,235,000 - 10,235,000 ( 10,235,000 ) - Repurchase Transaction - - - ( 13,559,322 ) ( 13,559,322 ) Balance, December 31, 2022 43,104,846 898,000 44,002,846 195,847,606 239,850,452 Equity-based compensation 99,801 - 99,801 - 99,801 Repurchase Transaction - - - - ( 3,619,254 ) ( 3,619,254 ) Equity offering transaction - 12,765,000 - 12,765,000 ( 12,765,000 ) - Repurchase Transaction - - - - ( 3,350,084 ) ( 3,350,084 ) Equity offering transaction - 11,500,000 - 11,500,000 ( 11,500,000 ) - Repurchase Transaction - - - - ( 3,301,420 ) ( 3,301,420 ) Repurchase Transaction - - - - ( 3,370,407 ) ( 3,370,407 ) Balance, December 31, 2023 67,469,647 898,000 68,367,647 157,941,441 226,309,088 Distributions Our partnership agreement requires that, within 45 days after the end of each quarter, we distribute all of our available cash to shareholders of record on the applicable record date. The following table details the distributions declared and/or paid for the periods presented: Period Record Date Distribution Date Distribution per Class A Share First Quarter 2021 May 3, 2021 May 13, 2021 $ 0.4526 Second Quarter 2021 August 9, 2021 August 13, 2021 $ 0.5042 Third Quarter 2021 November 4, 2021 November 12, 2021 $ 0.5104 Fourth Quarter 2021 February 3, 2022 February 14, 2022 $ 0.5167 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 November 2, 2023 November 14, 2023 $ 0.6175 Fourth Quarter 2023 (1) February 8, 2024 February 14, 2024 $ 0.6343 (1) For more information, see Note 14 , Subsequent Events .

Earnings per Share

Earnings per Share	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Earnings per Share	Note 9. Earnings per Share We calculate earnin gs 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. Year Ended December 31, (in millions, except per share amounts) 2023 2022 2021 Net income 607.7 620.6 617.8 Less: Net income attributable to noncontrolling interest 489.1 536.7 571.4 Net income attributable to Hess Midstream LP 118.6 83.9 46.4 Net income attributable to Hess Midstream LP Basic: $ 2.11 $ 2.03 $ 1.81 Diluted: $ 2.08 $ 2.01 $ 1.76 Weighted average Class A shares outstanding: Basic: 56.2 41.3 25.6 Diluted: 56.3 41.4 25.7 For the year ended December 31, 2023, the weighted average number of Class A Shares outstanding included 40,210 dilutive restricted shares (2022: 70,795 shares; 2021: 103,672 shares). In computing the dilutive effect, if any, of an exchange of Class B Units of the Partnership together with the equal number of Class B Shares of the Company to Class A Shares of the Company, net income attributable to Class A shareholders is adjusted, including for additional income tax expense, due to elimination of the noncontrolling interest associated with Class B Units of the Partnership. For the years ended December 31, 2023 and 2021, the “if-converted” method was more dilutive. A reconciliation of the numerator and the denominator of the diluted earnings per Class A Share calculation under the “if-converted” method, is presented below: Year Ended December 31, 2023 2022 2021 (in millions, except per share data) Diluted net income per share Numerator: Net income attributable to Hess Midstream LP $ 118.6 $ 83.9 $ 46.4 Effect of exchange of Class B Units of the Partnership and 489.1 536.7 571.4 Effect of income tax expense on additional income attributable (1) ( 119.3 ) ( 130.9 ) ( 139.4 ) Diluted net income attributable to Hess Midstream LP $ 488.4 $ 489.7 $ 478.4 Denominator: Basic weighted average Class A Shares outstanding 56.2 41.3 25.6 Effect of dilutive securities: Weighted average Class B Units/Shares 177.9 202.0 246.7 Restricted equity-based awards 0.1 0.1 0.1 Diluted weighted average shares outstanding 234.2 243.4 272.4 Diluted net income attributable to Hess Midstream LP $ 2.08 $ 2.01 $ 1.76 (1) Income tax effect is calculated assuming 24.39 % blended U.S. federal and state income tax rate.

Concentration of Credit Risk

Concentration of Credit Risk	12 Months Ended
	Dec. 31, 2023
Risks and Uncertainties [Abstract]
Concentration of Credit Risk	Note 10. Concen tration of Credit Risk As of December 31, 2023 and 2022, Hess and its affiliates represented approximately 98 % and 100 % , respectively, of accounts receivable from contracts with customers. Total revenues attributable to Hess for the years ended December 31, 2023, 2022 and 2021 were approximately 99 % , 100 % , and 100 % , respectively.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 11. 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 December 31, 2023, our reserves for all estimated remediation liabilities, inclusive of the produced water release discussed above, in Accrued liabilities and Other noncurrent liabilities were $ 1.7 million and $ 5.3 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 (“DEQ”) in connection with the produced water release described under Environmental Contingencies above. The Notice alerted the Company that it may have violated the State’s water pollution control laws, but neither imposed nor waived any enforcement action. On January 11, 2024, the DEQ proposed an Administrative Consent Agreement (“ACA”) that included an administrative penalty of $ 0.4 million and further line monitoring practices with respect to certain water gathering pipelines. The Company is evaluating the proposed ACA and is engaging in further discussions with DEQ. 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 December 31, 2023 and December 31, 2022, we did no t have material accrued liabilities for legal contingencies. Lease and Purchase Obligations As of December 31, 2023 and 2022, we did no t have material lease obligations. As of December 31 2023, we had unconditional purchase commitments of $ 15.8 million for the year ending December 31, 2024, and none for the years thereafter.

Segments

Segments	12 Months Ended
	Dec. 31, 2023
Segment Reporting [Abstract]
Segments	Note 12. Segm ents Our operations are located in the United States and are organized into three reportable segments: (i) gathering, (ii) processing and storage and (iii) 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. The accounting policies of the segments are identical to those described in Note 2 , Summary of Significant Accounting Policies and Basis of Presentation . Our CODM evaluates the segments’ operating performance based on multiple measures including Adjusted EBITDA, defined as net income (loss) before interest expense, income tax (benefit), depreciation and amortization, and our proportional share of depreciation of our equity affiliates as further adjusted for other non‑cash, non‑recurring items, if applicable. Gathering . Our gathering segment consists of the following assets: • Natural Gas Gathering and Compression . A natural gas gathering and compression system located primarily in McKenzie, Williams and Mountrail Counties, North Dakota connecting Hess and third‑party owned or operated wells to the Tioga Gas Plant, LM4 gas processing plant, and third‑party pipeline facilities. The system also includes the Hawkeye Gas Facility. • Crude Oil Gathering : A crude oil gathering system located primarily in McKenzie, Williams, and Mountrail Counties, North Dakota, connecting Hess and third‑party owned or operated wells to the Ramberg Terminal Facility and the Johnson’s Corner Header System. The system also includes the Hawkeye Oil Facility. • Produced Water Gathering and Disposal. A produced water gathering system and disposal facilities located primarily in Williams and Mountrail Counties, North Dakota. Processing and Storage . Our processing and storage segment consists of the following assets: • Tioga Gas Plant (TGP) . A natural gas processing and fractionation plant located in Tioga, North Dakota. • Mentor Storage Terminal . A propane storage cavern and rail and truck loading and unloading facility located in Mentor, Minnesota. • Equity Investment in LM4 Joint Venture. The Partnership’s 50 % equity method investment in LM4 joint venture that owns a natural gas processing plant located in McKenzie County, North Dakota. Terminaling and Export . Our terminaling and export segment consists of the following assets: • Ramberg Terminal Facility . A crude oil pipeline and truck receipt terminal located in Williams County, North Dakota that is capable of delivering crude oil into an interconnecting pipeline for transportation to the Tioga Rail Terminal, Dakota Access Pipeline (“DAPL”) and other third‑party pipelines and storage facilities. • Tioga Rail Terminal. A crude oil and NGL rail loading terminal in Tioga, North Dakota that is connected to the Tioga Gas Plant, the Ramberg Terminal Facility and our crude oil gathering system. • Crude Oil Rail Cars. A total of 550 crude oil rail cars, constructed to the DOT‑117 safety standards, which we operate as unit trains consisting of approximately 100 to 110 crude oil rail cars. • Johnson’s Corner Header System. An approximately six ‑mile crude oil pipeline header system located in McKenzie County, North Dakota that receives crude oil by pipeline from Hess and third parties and delivers crude oil to DAPL and other third‑party interstate pipeline systems. • Other DAPL Connections . Various connections into DAPL that receive crude oil by pipeline from the crude oil gathering system for delivery into DAPL. 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 Year Ended December 31, 2023 Revenues and other income $ 730.0 $ 501.7 $ 116.9 $ - $ 1,348.6 Net income (loss) 418.2 345.2 69.9 ( 225.6 ) 607.7 Net income (loss) attributable to 101.6 83.5 16.8 ( 83.3 ) 118.6 Depreciation expense 115.6 59.9 17.0 - 192.5 Proportional share of equity affiliates' - 5.1 - - 5.1 Income from equity investments - 7.7 - - 7.7 Interest expense, net - - - 179.0 179.0 Income tax expense - - - 37.9 37.9 Adjusted EBITDA 533.8 410.2 86.9 ( 8.7 ) 1,022.2 Capital expenditures 224.5 11.2 10.0 - 245.7 Gathering Processing and Storage Terminaling and Export Interest and Other Consolidated (in millions) For the Year Ended December 31, 2022 Revenues and other income $ 677.9 $ 470.8 $ 126.5 $ - $ 1,275.2 Net income (loss) 389.6 329.1 85.0 ( 183.1 ) 620.6 Net income (loss) attributable to 66.4 56.6 14.4 ( 53.5 ) 83.9 Depreciation expense 107.4 57.7 16.2 - 181.3 Proportional share of equity affiliates' - 5.1 - - 5.1 Income from equity investments - 5.3 - - 5.3 Interest expense, net - - - 149.3 149.3 Income tax expense - - - 26.6 26.6 Adjusted EBITDA 497.0 391.9 101.2 ( 7.2 ) 982.9 Capital expenditures 210.2 8.8 12.8 - 231.8 Gathering Processing and Storage Terminaling and Export Interest and Other Consolidated (in millions) For the Year Ended December 31, 2021 Revenues and other income $ 630.6 $ 435.7 $ 137.5 $ - $ 1,203.8 Net income (loss) 377.6 263.8 103.7 ( 127.3 ) 617.8 Net income (loss) attributable to 36.3 25.5 10.1 ( 25.5 ) 46.4 Depreciation expense 101.0 48.4 16.2 - 165.6 Proportional share of equity affiliates' - 5.1 - - 5.1 Income from equity investments - 10.6 - - 10.6 Interest expense, net - - - 105.4 105.4 Income tax expense - - - 14.6 14.6 Adjusted EBITDA 478.6 317.3 119.9 ( 7.3 ) 908.5 Capital expenditures 154.0 28.8 0.2 - 183.0 Total assets for reportable segments are as follows: December 31, 2023 December 31, 2022 (in millions) Gathering $ 2,138.6 $ 2,022.0 Processing and Storage (1) 1,048.4 1,099.2 Terminaling and Export 264.4 275.8 Interest and Other 338.1 191.2 Total assets $ 3,789.5 $ 3,588.2 (1) Includes investment in equity investees of $ 90.2 million as of December 31, 2023 and $ 93.9 million as of December 31, 2022.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Note 13. Inc ome Taxes Although the Company is a Delaware limited partnership, we are subject to corporate income tax on our share of the Partnership’s earnings because of our election to be treated as a corporation for U.S. federal and state income tax purposes. The provision (benefit) for income taxes consisted of: Year Ended December 31, (in millions) 2023 2022 2021 Federal Current $ 0.1 $ 0.1 $ 0.1 Deferred taxes and other accruals 31.2 22.8 12.5 State 6.6 3.7 2.0 Total provision (benefit) for income taxes $ 37.9 $ 26.6 $ 14.6 The difference between the effective income tax rate and the U.S. statutory rate is reconciled below: Year Ended December 31, 2023 2022 2021 U.S. statutory rate 21.0 % 21.0 % 21.0 % Noncontrolling interest in partnership ( 15.9 ) ( 17.4 ) ( 19.0 ) State income taxes, net of federal income tax 0.8 0.5 0.3 Effective rate 5.9 % 4.1 % 2.3 % A s a result of the equity offering and unit repurchase transactions (see Note 3, Equity Transactions ), we recognized an additional deferred tax asset in the total amount of $ 185.1 million (2022: $ 86.4 million) related to the change in the temporary difference between carrying amount and 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. The components of deferred tax assets and liabilities are as follows: December 31, 2023 2022 (in millions) Deferred tax liabilities Investments $ ( 0.5 ) $ ( 0.5 ) Total deferred tax liabilities ( 0.5 ) ( 0.5 ) Deferred tax assets Investments 278.2 148.9 Net operating loss carryforwards 46.2 28.3 Total deferred tax assets 324.4 177.2 Net deferred tax assets (liabilities) $ 323.9 $ 176.7 At December 31, 2023, we have recognized a deferred tax asset of $ 38.3 million related to U.S. federal net operating loss carryforwards which do not expire and $ 7.9 million related to U.S. state net operating loss carryforwards which begin to expire in 2029 . We have no unrecognized tax benefits or interest and penalties related to tax liabilities recorded in the financial statements. For the years presented, we earned all net income before taxes in the United States. We file income tax returns in the U.S. and various states. We are not subject to corporate income tax examination for years prior to 2020.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2023
Subsequent Events [Abstract]
Subsequent Events	N ote 14. Sub sequent Events On January 29, 2024 , the board of directors of our general partner declared a quarterly cash distribution of $ 0.6343 per Class A Share for the quarter ended December 31, 2023, an increase of approximately 11.4 % compared with the quarter ended December 31, 2022. The distribution was paid on February 14, 2024 to shareholders of record as of the close of business on February 8, 2024 . On February 14, 2024 , the Partnership also made a distribution of $ 0.6343 per Class B Unit of the Partnership to the Sponsors. On February 8, 2024, GIP sold an aggregate of 11,500,000 of our Class A shares, inclusive of the underwriters’ option to purchase up to 1,500,000 of additional shares, which was fully exercised, in an underwritten public offering at a price of $ 33.10 per Class A share, less underwriting discounts. GIP received net proceeds from the offering of approximately $ 377.5 million, after deducting underwriting discounts. The Company did not receive any proceeds in the offering. The offering was conducted pursuant to a registration rights agreement among us and the Sponsors. As a result of this public equity offering transaction, the Company’s consolidated ownership in the Partnership increased to approximately 35.3 % at February 8, 2024 from approximately 30.2 % at December 31, 2023, and the noncontrolling interest decreased to 64.7 % from 69.8 %, respectively.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies and Basis of Presentation (Policies)	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Consolidation	Consolidation . The consolidated financial statements include our accounts and the accounts of entities over which we have a controlling financial interest through our ownership or the majority voting interests of the entity. We consolidate the activities of the Partnership as a variable interest entity (“VIE”) under U.S. Generally Accepted Accounting Principles (“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 12 , Segments ). At December 31, 2023, our noncontrolling interest represents the 69.8 % interest in the Partnership retained by Hess and GIP (2022: 81.7 % ) . All intercompany transactions and balances have been eliminated.
Use of Estimates	Use of Estimates. We prepare our consolidated financial statements in conformity with the U.S. GAAP, which require management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the years presented. Changes in facts and circumstances may result in revised estimates and actual results could differ from those estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents. Cash equivalents consist of highly liquid investments, which are readily convertible into cash and have maturities of three months or less when acquired.
Accounts Receivable - Trade	Accounts Receivable – Trade . Trade accounts receivable represent valid claims against nonaffiliated customers for services rendered. We present accounts receivable net of an allowance for credit losses to reflect the net amount expected to be collected. There were no doubtful accounts written off, nor have we provided an allowance for credit losses, as of December 31, 2023 and 2022.
Accounts Receivable - Affiliate	Accounts Receivable – Affiliate. We record affiliate accounts receivable upon performance of services to affiliated companies. Generally, we receive payments from affiliated companies on a monthly basis, shortly after performance of services. There were no doubtful accounts written off, nor have we provided an allowance for doubtful accounts, as of December 31, 2023 and 2022.
Property, Plant and Equipment	Property, Plant and Equipment. Property, plant and equipment are stated at the lower of historical cost less accumulated depreciation subject to the results of impairment testing. We capitalize all construction-related direct labor and material costs, as well as indirect construction costs. Indirect construction costs include general engineering, taxes and the cost of funds used during construction. Costs, including complete asset replacements and enhancements or upgrades that increase the original efficiency, productivity or capacity of property, plant and equipment, are also capitalized. The costs of repairs, minor replacements and other projects, which do not increase the original efficiency, productivity or capacity of property, plant and equipment, are expensed as incurred.
Capitalization of Interest	Capitalization of Interest. Interest charges from borrowings are capitalized on material projects using the weighted average cost of outstanding borrowings until the project is substantially complete and ready for its intended use. Capitalized interest is depreciated over the useful lives of the assets in the same manner as the depreciation of the underlying assets.
Impairment of Long-Lived Assets	Impairment of Long‑Lived Assets. We review long-lived assets for impairment whenever events or changes in business circumstances indicate the net book values of the assets may not be recoverable. Factors that indicate potential impairment include a significant decrease in the market value of the asset, operating or cash flow losses associated with the use of the asset, and a significant change in the asset’s physical condition or use. Impairment is indicated when the undiscounted cash flows estimated to be generated by those assets are less than the assets’ net book value. Undiscounted cash flows are based on identifiable cash flows that are largely independent of the cash flows of other assets and liabilities. If impairment occurs, a loss is recognized for the difference between the fair value and net book value. Such fair value is generally determined by discounting anticipated future net cash flows, an income valuation approach, or by a market-based valuation approach, which are Level 3 fair value measurements. No impairments of long‑lived assets were recorded during the years ended December 31, 2023, 2022 and 2021.
Leases	Leases . We determine if an arrangement is a lease at inception. Operating lease right-of-use assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease right-of-use assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. The operating lease right-of-use asset includes any initial direct costs and excludes lease incentives received. The lease term used in measurement of our lease obligations may include periods covered by an option to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. The Company has elected not to recognize lease assets and lease liabilities for leases with a term of 12 months or less for all classes of underlying assets. Our lease agreements may include lease and non-lease components, which are generally accounted for separately.
Equity Investments	Equity Investments. We account for our investment in LM4 under the equity method of accounting, as we do not control, but have a significant influence over, its operations. Difference in the basis of the investment and the underlying net asset value of the equity investee is amortized into net income over the remaining useful lives of the underlying assets. Earnings from equity investments represent our proportionate share of net income generated by the equity investee. We classify distributions received from equity method investees on the basis of the nature of the activity of the investee that generated the distribution as either a return on investment classified as cash inflows from operating activities or a return of investment classified as cash inflows from investing activities when such information is available to us.
Deferred Financing Costs	Deferred Financing Costs. We capitalize debt issuance costs and fees incurred related to the procurement of our credit facilities. We amortize such costs as additional interest expense over the life of the credit agreement using the straight-line method, which approximates the effective interest method. Unamortized deferred financing costs related to our revolving credit facility are presented in Other noncurrent assets (2023: $ 7.4 million, 2022: $ 9.5 million) and unamortized deferred financing costs and discounts related to our fixed-rate senior notes and our term loan are presented as a direct reduction to the Long-term debt (2023: $ 26.1 million, 2022: $ 32.4 million) in the accompanying consolidated balance sheets.
Asset Retirement Obligations	Asset Retirement Obligations. We record legal obligations to remove and dismantle long-lived assets. We recognize a liability for the fair value of legally required asset retirement obligations associated with long-lived assets in the period in which the retirement obligations are incurred if the liability can be reasonably estimated. The associated asset retirement costs are capitalized as part of the carrying amount of the long-lived assets. Accretion expense is included in Depreciation expense in the consolidated statement of operations. At December 31, 2023, the asset retirement obligation balance included in Other noncurrent liabilities was $ 10.9 million and the current portion included in Accrued liabilities was $ 3.0 million (2022: $ 10.8 million and $ 3.0 million, respectively).
Revenue Recognition	Revenue Recognition—Contracts with Customers. We earn substantially all of our revenues by charging fees for gathering, compressing and processing natural gas and fractionating NGLs; gathering, terminaling, loading and transporting crude oil and NGLs, gathering and disposing produced water, and storing and terminaling propane. We do not own or take title to the volumes that we handle. Effective January 1, 2014, we entered into (i) gas gathering, (ii) crude oil gathering, (iii) gas processing and fractionation, (iv) storage services and (v) terminal and export services fee‑based commercial agreements with certain subsidiaries of Hess, and effective January 1, 2019, we entered into water gathering and disposal services fee-based agreements with a subsidiary of Hess. Our responsibilities to provide each of the above services for each year under each of the commercial agreements are considered separate, distinct performance obligations. We recognize revenues for each performance obligation under our commercial agreements over‑time as services are rendered using the output method, measured using the amount of volumes serviced during the period. The minimum volume commitments are subject to fluctuation based on nominations covering substantially all of Hess’ production and projected third-party volumes that will be purchased by Hess in the Bakken. As the minimum volume commitments are subject to fluctuation, and these commercial agreements contain fee inflation escalators and fee recalculation mechanisms, substantially all of the transaction price, as this term is defined in Accounting Standards Codification (“ASC”) Topic, ASC 606, is variable at inception of each of the commercial agreements. As the variability is resolved prior to the recognition of revenue, we do not apply a constraint to the transaction price at the inception of the commercial agreements. We elected the practical expedient to recognize revenue in the amount to which we have a right to invoice as permitted under ASC 606. Due to this election and as the transaction price allocated to our unsatisfied performance obligations is entirely variable, we have elected the exemption provided by ASC 606 from the disclosure of revenue recognizable in future periods as our unsatisfied performance obligations are fulfilled. There are no significant financing components in any of our commercial agreements. The minimum volumes that Hess provides to our assets under our commercial agreements include dedicated production covering substantially all of Hess’ existing and future owned or controlled production in the Bakken and projected third-party volumes owned or controlled by Hess through dedicated third-party contracts. If Hess delivers volumes less than the applicable minimum volume commitments under our commercial agreements during any quarter, Hess is obligated to pay us a shortfall fee equal to the volume deficiency multiplied by the related gathering, processing and/or terminaling fee, as applicable. Our responsibility to stand-ready to service a minimum volume over each quarterly commitment period represents a separate, distinct performance obligation. Currently, and for the remainder of the Initial Term of each commercial agreement as described in Note 4, volume deficiencies are measured quarterly and recognized as revenue in the same period, as any associated shortfall payments are not subject to future reduction or offset. During the Secondary Term of each commercial agreement as described in Note 4, Hess will be entitled to receive a credit, calculated in barrels or Mcf, as applicable, with respect to the amount of any shortfall fee paid by Hess, which will initially be reported in deferred revenue. Hess may apply such credit against the fees payable for any volumes delivered to us under the applicable agreement in excess of Hess’ nominated volumes up to four quarters after such credit is earned. Unused credits by Hess will be recognized as revenue when they expire after four quarters. However, Hess will not be entitled to receive any such credit with respect to crude oil terminaling services under our terminal and export services agreement or water handling services under our water gathering and disposal services agreements. In addition, we provide gathering and processing services directly to third-party customers. We recognize revenues for each performance obligation under our direct contracts with third-party customers over-time as services are rendered using the output method, measured using the amount of volumes serviced during the period . Our revenues also include pass‑through third‑party rail transportation costs, third-party produced water trucking and disposal costs, electricity fees and certain other fees for which we recognize revenues in an amount equal to the costs.
Depreciation Expense	Depreciation Expense. We calculate depreciation using the straight-line method based on the estimated useful lives after considering salvage values of our assets. Depreciation lives range from 12 to 35 years . However, factors such as maintenance levels, economic conditions impacting the demand for these assets, and regulatory or environmental requirements could cause us to change our estimates, thus impacting the future calculation of depreciation.
Income Taxes	Income Taxes . Deferred income taxes are determined using the liability method and reflect temporary differences between the financial statement carrying amount and income tax basis of assets and liabilities recorded using the statutory income tax rate. Regular assessments are made of the likelihood of those deferred tax assets being realized. If it is more likely than not that some or all of the deferred tax assets will not be realized, a valuation allowance is established to reduce the deferred tax assets to the amount expected to be realized.
Environmental and Legal Contingencies	Environmental and Legal Contingencies. We accrue and expense environmental costs on an undiscounted basis to remediate existing conditions related to past operations when the future costs are probable and reasonably estimable. 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.
Fair Value Measurements	Fair Value Measurements. We measure assets and liabilities requiring fair value presentation using an exit price (i.e., the price that would be received to sell an asset or paid to transfer a liability) and disclose such amounts according to the level of valuation inputs under the following hierarchy: Level 1: Quoted prices in an active market for identical assets or liabilities. Level 2: Inputs other than quoted prices that are directly or indirectly observable. Level 3: Unobservable inputs that are significant to the fair value of assets or liabilities. The classification of an asset or liability within the fair value measurement hierarchy is based on the lowest level of input significant to its fair value. There were no nonrecurring fair value measurements during the years ended December 31, 2023 and 2022. We had other short‑term financial instruments, primarily cash and cash equivalents, accounts receivable and accounts payable, for which the carrying value approximated their fair value as of December 31, 2023 and 2022.
New Accounting Pronouncements	New Accounting Pronouncements In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This ASU adds required disclosures of significant expenses for each reportable segment, as well as certain other disclosures to help users of financial statements understand how the chief operating decision maker evaluates segment expenses and operating results. The ASU does not change how an entity identifies its operating segments. The ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. We are currently assessing the impact of adopting this new ASU on our consolidated financial statements. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This ASU requires, among other disclosures, greater disaggregation of information, the use of certain categories in the rate reconciliation, and the disaggregation of income taxes paid by jurisdiction. The ASU is effective for public business entities for fiscal years beginning after December 15, 2024, and interim periods within fiscal years beginning after December 15, 2025, with early adoption permitted. We are currently assessing the impact of adopting this new ASU on our consolidated financial statements.

Equity Transactions (Tables)

Equity Transactions (Tables)	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Summary of Public Offering Transactions	During the years ended December 31, 2023, 2022 and 2021, our Sponsors sold the following aggregate number of our Class A shares representing limited partner interests (“Class A Shares”) in underwritten public offering transactions: Public Offering Date Number of Shares Offered Overallotment Option (1) Total Number of Shares Offered Public Offering Price (2) March 15, 2021 6,000,000 900,000 6,900,000 $ 21.00 October 8, 2021 7,500,000 1,125,000 8,625,000 $ 26.00 April 4, 2022 8,900,000 1,335,000 10,235,000 $ 29.50 May 19, 2023 11,100,000 1,665,000 12,765,000 $ 27.00 August 17, 2023 (3) 10,000,000 1,500,000 11,500,000 $ 28.80 (1) Overallotment options were exercised in full on the same date as the public offering date unless stated otherwise. (2) Public offering price excluding underwriting discounts. (3) The overallotment option for this transaction was exercised in full on August 22, 2023.
Summary of Class B Unit Repurchases	For the years ended December 31, 2023, 2022 and 2021, we had the following activity related to Class B unit repurchases (aggregate purchase price in millions): Closing Date Number of Units Repurchased Aggregate Purchase Price Purchase Price August 10, 2021 31,250,000 $ 750.0 $ 24.00 April 4, 2022 13,559,322 $ 400.0 $ 29.50 March 30, 2023 3,619,254 $ 100.0 $ 27.63 June 29, 2023 3,350,084 $ 100.0 $ 29.85 September 22, 2023 3,301,420 $ 100.0 $ 30.29 November 16, 2023 3,370,407 $ 100.0 $ 29.67

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2023
Related Party Transactions [Abstract]
Summary of Revenues From Contracts With Customers Including Affiliated Services and Third-party Services on Disaggregated Basis	Revenues from contracts with customers, including affiliated services and third-party services, on a disaggregated basis were as follows: Year Ended December 31, 2023 2022 2021 (in millions) Affiliate services Oil and gas gathering services $ 633.8 $ 600.8 $ 540.4 Processing and storage services 496.0 470.8 435.7 Terminaling and export services 114.4 124.5 137.5 Water gathering and disposal services 93.9 77.1 90.2 Total affiliate services $ 1,338.1 $ 1,273.2 $ 1,203.8 Third-party services 8.0 - - Total revenues from contracts with customers $ 1,346.1 $ 1,273.2 $ 1,203.8 Other income 2.5 2.0 - Total revenues $ 1,348.6 $ 1,275.2 $ 1,203.8
Summary of MVC Shortfall Fees Earned	The following table presents MVC shortfall fees earned during each period: Year Ended December 31, 2023 2022 2021 (in millions) Oil and gas gathering services $ 8.2 $ 93.0 $ 43.0 Processing and storage services ( 0.3 ) 34.9 4.4 Terminaling and export services 3.2 32.0 32.8 Water gathering disposal services - 0.4 6.8 Total $ 11.1 $ 160.3 $ 87.0
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 consolidated statements of operations. Year Ended December 31, 2023 2022 2021 (in millions) Electricity and other related fees $ 47.8 $ 44.8 $ 50.3 Produced water trucking and disposal costs 38.5 33.1 37.0 Rail transportation costs ( 3.4 ) 3.5 0.1 Total $ 82.9 $ 81.4 $ 87.4 For the years ended December 31, 2023, 2022 and 2021, 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. Year Ended December 31, 2023 2022 2021 (in millions) Operating and maintenance expenses $ 79.7 $ 71.2 $ 63.6 General and administrative expenses 17.5 15.9 15.4 Total $ 97.2 $ 87.1 $ 79.0
Summary of Activity Related to Agreements with Related Party	For the years ended December 31, 2023, 2022 and 2021, we had the following activity related to our agreements with LM4: Year Ended December 31, 2023 2022 2021 (in millions) Processing fee incurred $ 24.0 $ 20.5 $ 27.7 Earnings from equity investments $ 7.7 $ 5.3 $ 10.6 Distributions received from equity investments $ 11.4 $ 13.0 $ 17.4

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Components of Property, Plant and Equipment	Property, plant and equipment, at cost, is as follows: Estimated useful lives December 31, 2023 December 31, 2022 (in millions, except for number of years) Gathering assets Pipelines 22 years $ 1,703.7 $ 1,591.7 Compressors, pumping stations and terminals 22 to 25 years 1,026.4 923.1 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 424.7 414.4 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 19.9 19.7 Other 20 to 25 years 28.0 25.5 Construction-in-progress N/A 136.3 136.3 Total property, plant and equipment, at cost 4,818.7 4,570.5 Accumulated depreciation ( 1,589.5 ) ( 1,397.7 ) Property, plant and equipment, net $ 3,229.2 $ 3,172.8

Accrued Liabilities and Other_2

Accrued Liabilities and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2023
Accrued Liabilities, Current [Abstract]
Schedule of Accrued Liabilities	Accrued liabilities are as follows: December 31, 2023 December 31, 2022 (in millions) Accrued capital expenditures $ 42.9 $ 24.1 Accrued interest 35.8 35.4 Other accruals 27.2 23.4 Total $ 105.9 $ 82.9
Schedule of Other Current Liabilities	Other current liabilities are as follows: December 31, 2023 December 31, 2022 (in millions) Property and sales and use tax payable $ 11.5 $ 10.7 Other current liabilities 0.6 0.7 Total $ 12.1 $ 11.4

Debt and Interest Expense (Tabl

Debt and Interest Expense (Tables)	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
Summary of Total Long-term Debt	Total long-term debt is as follows: December 31, 2023 December 31, 2022 (in millions) Fixed-rate senior notes: 5.625 % due 2026 $ 800.0 $ 800.0 5.125 % due 2028 550.0 550.0 4.250 % due 2030 750.0 750.0 5.500 % due 2030 400.0 400.0 Total fixed-rate senior notes 2,500.0 2,500.0 Term Loan A facility 397.5 400.0 Revolving credit facility 340.0 18.0 Total Borrowings 3,237.5 2,918.0 Unamortized deferred financing costs and discounts ( 26.1 ) ( 32.4 ) Total debt 3,211.4 2,885.6 Less: current maturities of long-term debt 12.5 2.5 Total long-term debt $ 3,198.9 $ 2,883.1
Summary of Maturity Profile of Total Debt, Excluding Deferred Financing Costs and Discounts	As of December 31, 2023, the maturity profile of total debt, excluding deferred financing costs and discounts, is as follows: (in millions) Total 2024 2025 2026 2027 2028 2029 and thereafter Fixed-rate senior notes $ 2,500.0 $ - $ - $ 800.0 $ - $ 550.0 $ 1,150.0 Term Loan facility 397.5 12.5 22.5 32.5 330.0 - - Revolving credit facility 340.0 - - - 340.0 - - Total debt (excluding interest) $ 3,237.5 $ 12.5 $ 22.5 $ 832.5 $ 670.0 $ 550.0 $ 1,150.0

Partners' Capital and Distrib_2

Partners' Capital and Distributions (Tables)	12 Months Ended
	Dec. 31, 2023
Partners' Capital Notes [Abstract]
Schedule of Changes in Number of Shares Outstanding	The changes in the number of shares of the Company outstanding from December 31, 2020 through December 31, 2023 are as follows: Class A Shares Public Sponsors Total Class A Shares Class B Shares Total Class A and Class B Shares Balance, December 31, 2020 17,130,308 898,000 18,028,308 266,416,928 284,445,236 Equity-based compensation 118,760 - 118,760 - 118,760 Equity offering transaction - 6,900,000 - 6,900,000 ( 6,900,000 ) - Equity offering transaction - 8,625,000 - 8,625,000 ( 8,625,000 ) - Repurchase Transaction - - - ( 31,250,000 ) ( 31,250,000 ) Balance, December 31, 2021 32,774,068 898,000 33,672,068 219,641,928 253,313,996 Equity-based compensation 95,778 - 95,778 - 95,778 Equity offering transaction - 10,235,000 - 10,235,000 ( 10,235,000 ) - Repurchase Transaction - - - ( 13,559,322 ) ( 13,559,322 ) Balance, December 31, 2022 43,104,846 898,000 44,002,846 195,847,606 239,850,452 Equity-based compensation 99,801 - 99,801 - 99,801 Repurchase Transaction - - - - ( 3,619,254 ) ( 3,619,254 ) Equity offering transaction - 12,765,000 - 12,765,000 ( 12,765,000 ) - Repurchase Transaction - - - - ( 3,350,084 ) ( 3,350,084 ) Equity offering transaction - 11,500,000 - 11,500,000 ( 11,500,000 ) - Repurchase Transaction - - - - ( 3,301,420 ) ( 3,301,420 ) Repurchase Transaction - - - - ( 3,370,407 ) ( 3,370,407 ) Balance, December 31, 2023 67,469,647 898,000 68,367,647 157,941,441 226,309,088
Schedule of Distributions Declared and Paid	The following table details the distributions declared and/or paid for the periods presented: Period Record Date Distribution Date Distribution per Class A Share First Quarter 2021 May 3, 2021 May 13, 2021 $ 0.4526 Second Quarter 2021 August 9, 2021 August 13, 2021 $ 0.5042 Third Quarter 2021 November 4, 2021 November 12, 2021 $ 0.5104 Fourth Quarter 2021 February 3, 2022 February 14, 2022 $ 0.5167 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 November 2, 2023 November 14, 2023 $ 0.6175 Fourth Quarter 2023 (1) February 8, 2024 February 14, 2024 $ 0.6343 (1) For more information, see Note 14 , Subsequent Events .

Earnings per Share (Tables)

Earnings per Share (Tables)	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Schedule of Earnings per Share	We calculate earnin gs 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. Year Ended December 31, (in millions, except per share amounts) 2023 2022 2021 Net income 607.7 620.6 617.8 Less: Net income attributable to noncontrolling interest 489.1 536.7 571.4 Net income attributable to Hess Midstream LP 118.6 83.9 46.4 Net income attributable to Hess Midstream LP Basic: $ 2.11 $ 2.03 $ 1.81 Diluted: $ 2.08 $ 2.01 $ 1.76 Weighted average Class A shares outstanding: Basic: 56.2 41.3 25.6 Diluted: 56.3 41.4 25.7
Summary of Reconciliation of Numerator and Denominator of Diluted Earnings	A reconciliation of the numerator and the denominator of the diluted earnings per Class A Share calculation under the “if-converted” method, is presented below: Year Ended December 31, 2023 2022 2021 (in millions, except per share data) Diluted net income per share Numerator: Net income attributable to Hess Midstream LP $ 118.6 $ 83.9 $ 46.4 Effect of exchange of Class B Units of the Partnership and 489.1 536.7 571.4 Effect of income tax expense on additional income attributable (1) ( 119.3 ) ( 130.9 ) ( 139.4 ) Diluted net income attributable to Hess Midstream LP $ 488.4 $ 489.7 $ 478.4 Denominator: Basic weighted average Class A Shares outstanding 56.2 41.3 25.6 Effect of dilutive securities: Weighted average Class B Units/Shares 177.9 202.0 246.7 Restricted equity-based awards 0.1 0.1 0.1 Diluted weighted average shares outstanding 234.2 243.4 272.4 Diluted net income attributable to Hess Midstream LP $ 2.08 $ 2.01 $ 1.76 (1) Income tax effect is calculated assuming 24.39 % blended U.S. federal and state income tax rate.

Segments (Tables)

Segments (Tables)	12 Months Ended
	Dec. 31, 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 Year Ended December 31, 2023 Revenues and other income $ 730.0 $ 501.7 $ 116.9 $ - $ 1,348.6 Net income (loss) 418.2 345.2 69.9 ( 225.6 ) 607.7 Net income (loss) attributable to 101.6 83.5 16.8 ( 83.3 ) 118.6 Depreciation expense 115.6 59.9 17.0 - 192.5 Proportional share of equity affiliates' - 5.1 - - 5.1 Income from equity investments - 7.7 - - 7.7 Interest expense, net - - - 179.0 179.0 Income tax expense - - - 37.9 37.9 Adjusted EBITDA 533.8 410.2 86.9 ( 8.7 ) 1,022.2 Capital expenditures 224.5 11.2 10.0 - 245.7 Gathering Processing and Storage Terminaling and Export Interest and Other Consolidated (in millions) For the Year Ended December 31, 2022 Revenues and other income $ 677.9 $ 470.8 $ 126.5 $ - $ 1,275.2 Net income (loss) 389.6 329.1 85.0 ( 183.1 ) 620.6 Net income (loss) attributable to 66.4 56.6 14.4 ( 53.5 ) 83.9 Depreciation expense 107.4 57.7 16.2 - 181.3 Proportional share of equity affiliates' - 5.1 - - 5.1 Income from equity investments - 5.3 - - 5.3 Interest expense, net - - - 149.3 149.3 Income tax expense - - - 26.6 26.6 Adjusted EBITDA 497.0 391.9 101.2 ( 7.2 ) 982.9 Capital expenditures 210.2 8.8 12.8 - 231.8 Gathering Processing and Storage Terminaling and Export Interest and Other Consolidated (in millions) For the Year Ended December 31, 2021 Revenues and other income $ 630.6 $ 435.7 $ 137.5 $ - $ 1,203.8 Net income (loss) 377.6 263.8 103.7 ( 127.3 ) 617.8 Net income (loss) attributable to 36.3 25.5 10.1 ( 25.5 ) 46.4 Depreciation expense 101.0 48.4 16.2 - 165.6 Proportional share of equity affiliates' - 5.1 - - 5.1 Income from equity investments - 10.6 - - 10.6 Interest expense, net - - - 105.4 105.4 Income tax expense - - - 14.6 14.6 Adjusted EBITDA 478.6 317.3 119.9 ( 7.3 ) 908.5 Capital expenditures 154.0 28.8 0.2 - 183.0
Total Assets for Reportable Segments	Total assets for reportable segments are as follows: December 31, 2023 December 31, 2022 (in millions) Gathering $ 2,138.6 $ 2,022.0 Processing and Storage (1) 1,048.4 1,099.2 Terminaling and Export 264.4 275.8 Interest and Other 338.1 191.2 Total assets $ 3,789.5 $ 3,588.2 (1) Includes investment in equity investees of $ 90.2 million as of December 31, 2023 and $ 93.9 million as of December 31, 2022.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Schedule of Provision (Benefit) for Income Taxes	The provision (benefit) for income taxes consisted of: Year Ended December 31, (in millions) 2023 2022 2021 Federal Current $ 0.1 $ 0.1 $ 0.1 Deferred taxes and other accruals 31.2 22.8 12.5 State 6.6 3.7 2.0 Total provision (benefit) for income taxes $ 37.9 $ 26.6 $ 14.6
Summary of Difference between the Effective Income Tax Rate and U.S. Statutory Rate	The difference between the effective income tax rate and the U.S. statutory rate is reconciled below: Year Ended December 31, 2023 2022 2021 U.S. statutory rate 21.0 % 21.0 % 21.0 % Noncontrolling interest in partnership ( 15.9 ) ( 17.4 ) ( 19.0 ) State income taxes, net of federal income tax 0.8 0.5 0.3 Effective rate 5.9 % 4.1 % 2.3 % A
Components of Deferred Tax Assets and Liabilities	The components of deferred tax assets and liabilities are as follows: December 31, 2023 2022 (in millions) Deferred tax liabilities Investments $ ( 0.5 ) $ ( 0.5 ) Total deferred tax liabilities ( 0.5 ) ( 0.5 ) Deferred tax assets Investments 278.2 148.9 Net operating loss carryforwards 46.2 28.3 Total deferred tax assets 324.4 177.2 Net deferred tax assets (liabilities) $ 323.9 $ 176.7

Description of Business - Addit

Description of Business - Additional Information (Detail)			12 Months Ended
	Dec. 16, 2019 shares	Apr. 10, 2017	Dec. 31, 2023 Segment shares MMcf	Oct. 22, 2023	Dec. 31, 2022 shares MMcf	Dec. 31, 2021 shares	Dec. 31, 2020 shares MMcf	Sep. 30, 2019	Jan. 25, 2018 MMcf	Jan. 24, 2018
Description Of Business [Line Items]
Number of operating segments | Segment			3
Natural gas processing capacity expansion			70		85
Number of units hold in partnership | shares			226,309,088		239,850,452	253,313,996	284,445,236
Maximum
Description Of Business [Line Items]
Natural gas processing capacity expansion			30		130
Chevron Corporation
Description Of Business [Line Items]
Percentage of ownership				37.80%
LM4
Description Of Business [Line Items]
Percentage of ownership in joint venture								50%	50%	50%
Gas processing plant capacity									200
LM4 | Targa Resources Corp.
Description Of Business [Line Items]
Percentage of ownership in joint venture									50%	50%
Common Class A
Description Of Business [Line Items]
Number of units hold in partnership | shares			68,367,647		44,002,846	33,672,068	18,028,308
Hess
Description Of Business [Line Items]
Percentage of ownership in joint venture			50%
Global Infrastructure Partners
Description Of Business [Line Items]
Percentage of ownership in joint venture			50%
Hess T G P Operations Limited Partnership
Description Of Business [Line Items]
Natural gas processing capacity expansion							150
Third-party Residue Export Expansion
Description Of Business [Line Items]
Expected natural gas processing capacity			400
Hess Midstream Partners GP Limited Partner
Description Of Business [Line Items]
Percentage of ownership interest		100%
Hess Infrastructure Partners LP | IPO
Description Of Business [Line Items]
Percentage of ownership interest		20%
Hess Mentor Storage Holdings Limited Liability Company | IPO
Description Of Business [Line Items]
Percentage of ownership interest		100%
Hess Infrastructure Partners Limited Partnership Joint Interest Assets
Description Of Business [Line Items]
Percentage of ownership interest	80%	80%
Hess Water Services and Hess Midstream Partners GP Limited Partner
Description Of Business [Line Items]
Percentage of ownership interest	100%	100%
Hess and GIP | Common Class A
Description Of Business [Line Items]
Number of units hold in partnership | shares	898,000

Summary of Significant Accoun_3

Summary of Significant Accounting Policies and Basis of Presentation - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounting Policies [Line Items]
Doubtful accounts written off	$ 0	$ 0
Allowance for doubtful accounts	0	0
Impairment of long-lived assets	$ 0	0	$ 0
Minimum
Accounting Policies [Line Items]
Depreciation lives of assets	12 years
Maximum
Accounting Policies [Line Items]
Depreciation lives of assets	35 years
Other Noncurrent Liabilities
Accounting Policies [Line Items]
Asset retirement obligation, noncurrent	$ 10,900,000	10,800,000
Accrued Liabilities
Accounting Policies [Line Items]
Asset retirement obligation,current	3,000,000	3,000,000
Revolving Credit Facility | Other Noncurrent Assets
Accounting Policies [Line Items]
Unamortized deferred financing costs and discounts	7,400,000	9,500,000
Fixed-Rate Senior Notes and Term Loan | Long-term Debt
Accounting Policies [Line Items]
Unamortized deferred financing costs and discounts	$ 26,100,000	$ 32,400,000
Hess and GIP
Accounting Policies [Line Items]
Noncontrolling interest percentage	69.80%	81.70%

Equity Transactions - Schedule

Equity Transactions - Schedule of Limited Partner Interests Underwritten Public Offering Transactions (Details) - Class A Shares	12 Months Ended
	Dec. 31, 2023 $ / shares shares
March 15, 2021
Class of Stock [Line Items]
Number of Shares Offered	6,000,000
Overallotment Option	900,000
Total Number of Shares Offered	6,900,000
Public Offering Price | $ / shares	$ 21
October 8, 2021
Class of Stock [Line Items]
Number of Shares Offered	7,500,000
Overallotment Option	1,125,000
Total Number of Shares Offered	8,625,000
Public Offering Price | $ / shares	$ 26
April 4, 2022
Class of Stock [Line Items]
Number of Shares Offered	8,900,000
Overallotment Option	1,335,000
Total Number of Shares Offered	10,235,000
Public Offering Price | $ / shares	$ 29.5
May 19, 2023
Class of Stock [Line Items]
Number of Shares Offered	11,100,000
Overallotment Option	1,665,000
Total Number of Shares Offered	12,765,000
Public Offering Price | $ / shares	$ 27
August 17, 2023
Class of Stock [Line Items]
Number of Shares Offered	10,000,000
Overallotment Option	1,500,000
Total Number of Shares Offered	11,500,000
Public Offering Price | $ / shares	$ 28.8

Equity Transactions - Additiona

Equity Transactions - Additional Information (Details) - USD ($)									12 Months Ended
	Nov. 13, 2023	Sep. 19, 2023	Aug. 17, 2023	Jun. 26, 2023	Mar. 27, 2023	Apr. 04, 2022	Mar. 29, 2022	Jul. 27, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Apr. 30, 2022	Aug. 10, 2021
Class of Stock [Line Items]
Additions to deferred tax asset									$ 324,400,000	$ 177,200,000
Costs incurred to repurchase shares were charged to equity									3,300,000	1,500,000	$ 2,100,000
5.500% Fixed Rate Senior Unsecured Notes due 2030
Class of Stock [Line Items]
Fixed-rate senior notes						$ 400,000,000						$ 400,000,000
4.250% Senior Notes Due 2030
Class of Stock [Line Items]
Fixed-rate senior notes													$ 750,000,000
Class A Shares
Class of Stock [Line Items]
Proceeds from Issuance of public equity offering			$ 0
Net proceeds received by sponsors from public equity offering									662,200,000	291,700,000	356,500,000
Increase (decrease) common unitholders									340,200,000	245,100,000
Additions to deferred tax asset									185,100,000	86,400,000	89,000,000
Class A Shares | Equity Offering Transactions
Class of Stock [Line Items]
Increase (decrease) common unitholders									$ 17,800,000	$ 27,000,000	$ 52,400,000
Class B Shares
Class of Stock [Line Items]
Repurchase of shares	3,370,407	3,301,420		3,350,084	3,619,254	13,559,322		31,250,000
Value of shares repurchased	$ 100,000,000	$ 100,000,000		$ 100,000,000	$ 100,000,000		$ 400,000,000	$ 750,000,000
Stock purchased price per share	$ 29.67	$ 30.29		$ 29.85	$ 27.63	$ 29.5		$ 24
Percentage of discount on purchase price per share								4%

Equity Transactions - Summary o

Equity Transactions - Summary of Class B Unit Repurchases (Details) - Class B Shares - USD ($) $ / shares in Units, $ in Millions								12 Months Ended
	Nov. 13, 2023	Sep. 19, 2023	Jun. 26, 2023	Mar. 27, 2023	Apr. 04, 2022	Mar. 29, 2022	Jul. 27, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Repurchase Units [Line Items]
Number of Units Repurchased	3,370,407	3,301,420	3,350,084	3,619,254	13,559,322		31,250,000
Aggregate Purchase Price	$ 100	$ 100	$ 100	$ 100		$ 400	$ 750
Purchase Price Per Unit	$ 29.67	$ 30.29	$ 29.85	$ 27.63	$ 29.5		$ 24
August 10, 2021
Repurchase Units [Line Items]
Number of Units Repurchased										31,250,000
Aggregate Purchase Price										$ 750
Purchase Price Per Unit										$ 24
April 4, 2022
Repurchase Units [Line Items]
Number of Units Repurchased									13,559,322
Aggregate Purchase Price									$ 400
Purchase Price Per Unit									$ 29.5
March 30, 2023
Repurchase Units [Line Items]
Number of Units Repurchased								3,619,254
Aggregate Purchase Price								$ 100
Purchase Price Per Unit								$ 27.63
June 29. 2023
Repurchase Units [Line Items]
Number of Units Repurchased								3,350,084
Aggregate Purchase Price								$ 100
Purchase Price Per Unit								$ 29.85
September 22, 2023
Repurchase Units [Line Items]
Number of Units Repurchased								3,301,420
Aggregate Purchase Price								$ 100
Purchase Price Per Unit								$ 30.29
November 16, 2023
Repurchase Units [Line Items]
Number of Units Repurchased								3,370,407
Aggregate Purchase Price								$ 100
Purchase Price Per Unit								$ 29.67

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details)	Dec. 16, 2019	Apr. 10, 2017
Hess Infrastructure Partners Limited Partnership Joint Interest Assets
Business Acquisition [Line Items]
Percentage of ownership interest	80%	80%

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail)		12 Months Ended
	Jan. 24, 2018	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2019	Jan. 25, 2018
LM4
Related Party Transaction [Line Items]
Initial term of agreement	16 years
Agreement description		The agreement has a 16-year initial term, after which it is automatically renewed for subsequent one-year terms unless terminated by either party
Percentage of gas processing plant capacity	50%
Percentage of ownership in joint venture	50%				50%	50%
Hess | Customer Concentration Risk | Revenue
Related Party Transaction [Line Items]
Revenues attributable to fee based commercial agreements		99%	100%	100%
Hess | Amended and Restated Commercial Agreement
Related Party Transaction [Line Items]
Minimum volume commitments, Description		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 cannot 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. If Hess fails to deliver its applicable MVCs during any quarter, then Hess will pay us a shortfall fee equal to the volume of the deficiency multiplied by the applicable fee.
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 had an initial 10-year term effective January 1, 2014 (“Initial Term”).
Inflation escalator capped rate		3%
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
Renew terms of agreement description		Upon the expiration of the Secondary Term, if any, the agreements will automatically renew for subsequent one-year periods unless terminated by either party no later than 180 days prior to the end of the applicable Secondary Term.
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, MVCs will continue to be set at 80% of Hess' nominated volumes in each development plan set three years in advance. Except for the crude oil terminaling and water handling services, Hess will be entitled to receive a credit, calculated in barrels or Mcf, as applicable, with respect to the amount of any shortfall fee paid by Hess and may apply such credit against any volumes delivered to us under the applicable agreement in excess of Hess’s nominated volumes during any of the following four quarters after such credit is earned, after which time any unused credits will expire. The shortfall amounts received under MVCs during the Secondary Term (except for the crude oil terminaling and water handling services) will be recorded as deferred revenue and recognized as revenue as the credits are utilized or expire.
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 Including Affiliated Services and Third-party Services on Disaggregated Basis (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	$ 1,346.1	$ 1,273.2	$ 1,203.8
Other income	2.5	2	0
Total revenues	1,348.6	1,275.2	1,203.8
Affiliate
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	1,338.1	1,273.2	1,203.8
Third Party
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	8
Oil and Gas Gathering Services | Affiliate
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	633.8	600.8	540.4
Processing and Storage Services | Affiliate
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	496	470.8	435.7
Terminaling and Export Services | Affiliate
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	114.4	124.5	137.5
Water Gathering and Disposal Services | Affiliate
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	$ 93.9	$ 77.1	$ 90.2

Related Party Transactions - _2

Related Party Transactions - Summary of MVC Shortfall Fees Earned (Detail) - Hess - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Total MVC shortfall fees	$ 11.1	$ 160.3	$ 87
Oil and Gas Gathering Services
Related Party Transaction [Line Items]
Total MVC shortfall fees	8.2	93	43
Processing and Storage Services
Related Party Transaction [Line Items]
Total MVC shortfall fees	(0.3)	34.9	4.4
Terminaling and Export Services
Related Party Transaction [Line Items]
Total MVC shortfall fees	$ 3.2	32	32.8
Water Gathering Disposal Services
Related Party Transaction [Line Items]
Total MVC shortfall fees		$ 0.4	$ 6.8

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	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Reimbursement revenue	$ 1,346.1	$ 1,273.2	$ 1,203.8
Hess
Related Party Transaction [Line Items]
Total	82.9	81.4	87.4
Hess | Electricity and Other Related Fees
Related Party Transaction [Line Items]
Reimbursement revenue	47.8	44.8	50.3
Hess | Produced Water Trucking and Disposal Costs
Related Party Transaction [Line Items]
Reimbursement revenue	38.5	33.1	37
Hess | Rail Transportation Costs
Related Party Transaction [Line Items]
Reimbursement revenue	$ (3.4)	$ 3.5	$ 0.1

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	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Operating and maintenance expenses	$ 313	$ 279.6	$ 288.3
Hess
Related Party Transaction [Line Items]
Operating and maintenance expenses	$ 79.7	$ 71.2	$ 63.6
Operating Cost and Expense, Related Party, Type [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
General and administrative expenses	$ 17.5	$ 15.9	$ 15.4
Selling, General, and Administrative Expenses, Related Party, Type [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Total	$ 97.2	$ 87.1	$ 79

Related Party Transactions - _5

Related Party Transactions - Summary of Activity Related to Agreements with Related Party (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Processing fee incurred	$ 313	$ 279.6	$ 288.3
Earnings from equity investments	7.7	5.3	10.6
Distributions received from equity investments	11.4	13	17.4
LM4
Related Party Transaction [Line Items]
Processing fee incurred	$ 24	$ 20.5	$ 27.7
Operating Cost and Expense, Related Party, Type [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Earnings from equity investments	$ 7.7	$ 5.3	$ 10.6
Distributions received from equity investments	$ 11.4	$ 13	$ 17.4

Property, Plant and Equipment -

Property, Plant and Equipment - Components of Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 4,818.7	$ 4,570.5
Accumulated depreciation	(1,589.5)	(1,397.7)
Property, plant and equipment, net	$ 3,229.2	3,172.8
Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	12 years
Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	35 years
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	$ 19.9	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	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	$ 136.3	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	$ 1,703.7	1,591.7
Gathering Assets | Compressors, Pumping Stations and Terminals
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 1,026.4	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	$ 424.7	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 and Other_3

Accrued Liabilities and Other Current Liabilities - Schedule of Accrued Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Accrued Liabilities, Current [Abstract]
Accrued capital expenditures	$ 42.9	$ 24.1
Accrued interest	35.8	35.4
Other accruals	27.2	23.4
Total	$ 105.9	$ 82.9

Accrued Liabilities and Other_4

Accrued Liabilities and Other Current Liabilities - Schedule of Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Accrued Liabilities, Current [Abstract]
Property and sales and use tax payable	$ 11.5	$ 10.7
Other current liabilities	0.6	0.7
Total	$ 12.1	$ 11.4

Debt and Interest Expense - Sum

Debt and Interest Expense - Summary of Total Long-term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total Borrowings	$ 3,237.5	$ 2,918
Unamortized deferred financing costs and discounts	(26.1)	(32.4)
Total debt	3,211.4	2,885.6
Less: current maturities of long-term debt	12.5	2.5
Total long-term debt	3,198.9	2,883.1
Term Loan A Facility
Debt Instrument [Line Items]
Total Borrowings	397.5	400
Revolving Credit Facility
Debt Instrument [Line Items]
Total Borrowings	340	18
Fixed-Rate Senior Notes
Debt Instrument [Line Items]
Total Borrowings	2,500	2,500
Fixed-Rate Senior Notes | 5.625% Fixed Rate Senior Notes due 2026
Debt Instrument [Line Items]
Total Borrowings	800	800
Fixed-Rate Senior Notes | 5.125% Fixed Rate Senior Notes due 2028
Debt Instrument [Line Items]
Total Borrowings	550	550
Fixed-Rate Senior Notes | 4.250% Fixed Rate Senior Notes due 2030
Debt Instrument [Line Items]
Total Borrowings	750	750
Fixed-Rate Senior Notes | 5.500% Fixed Rate Senior Notes due 2030
Debt Instrument [Line Items]
Total Borrowings	$ 400	$ 400

Debt and Interest Expense - S_2

Debt and Interest Expense - Summary of Total Long-term Debt (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2023
5.625% Fixed Rate Senior Notes due 2026
Debt Instrument [Line Items]
Debt instrument interest rate	5.625%
Debt instrument due year	2026
5.125% Fixed Rate Senior Notes due 2028
Debt Instrument [Line Items]
Debt instrument interest rate	5.125%
Debt instrument due year	2028
4.250% Fixed Rate Senior Notes due 2030
Debt Instrument [Line Items]
Debt instrument interest rate	4.25%
Debt instrument due year	2030
5.500% Fixed Rate Senior Notes due 2030
Debt Instrument [Line Items]
Debt instrument interest rate	5.50%
Debt instrument due year	2030

Debt and Interest Expense - S_3

Debt and Interest Expense - Summary of Maturity Profile of Total Debt, Excluding Deferred Financing Costs and Discounts (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total debt (excluding interest)	$ 3,237.5	$ 2,918
2024	12.5
2025	22.5
2026	832.5
2027	670
2028	550
2029 and thereafter	1,150
Fixed-Rate Senior Notes
Debt Instrument [Line Items]
Total debt (excluding interest)	2,500	2,500
2024	0
2025	0
2026	800
2027	0
2028	550
2029 and thereafter	1,150
Term Loan Facility
Debt Instrument [Line Items]
Total debt (excluding interest)	397.5
2024	12.5
2025	22.5
2026	32.5
2027	330
2028	0
2029 and thereafter	0
Revolving Credit Facility
Debt Instrument [Line Items]
Total debt (excluding interest)	340	$ 18
2024	0
2025	0
2026	0
2027	340
2028	0
2029 and thereafter	$ 0

Debt and Interest Expense - Add

Debt and Interest Expense - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Apr. 30, 2022	Apr. 04, 2022	Aug. 31, 2021	Dec. 31, 2019
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.
Total debt	$ 3,211,400,000	$ 2,885,600,000
Line of credit interest paid on credit facilities, including facility fees	170,600,000	$ 136,800,000	$ 84,500,000
Carrying Value
Debt Instrument [Line Items]
Total debt	3,211,400,000
Level 2
Debt Instrument [Line Items]
Total debt fair value	$ 3,143,300,000
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility - Term	5 years
Maximum borrowing capacity	$ 1,000,000
Borrowings	$ 340,000,000
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Interest rate applicable margin	1.65%
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Interest rate applicable margin	2.55%
Term Loan A Facility
Debt Instrument [Line Items]
Credit facility - maturity year	2027
Credit facility - Term	5 years
Maximum borrowing capacity	$ 400,000,000
Borrowings	$ 397,500,000
Syndicated Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility - Term	5 years
Syndicated Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Interest rate applicable margin	1.375%
Syndicated Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Interest rate applicable margin	2.05%
Fixed-Rate Senior Notes
Debt Instrument [Line Items]
Debt instrument weighted average interest rate	5.10%	5.10%
Debt covenant, leverage ratio	425%
5.625% Fixed Rate Senior Unsecured Notes due 2026
Debt Instrument [Line Items]
Aggregate principal amount of fixed-rate senior notes							$ 800,000,000
Debt instrument interest rate	5.625%
Debt instrument due year	2026
5.625% Fixed Rate Senior Unsecured Notes due 2026 | Fixed-Rate Senior 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
Debt instrument interest rate	5.125%
Debt instrument due year	2028
5.125% Fixed Rate Senior Unsecured Notes due 2028 | Fixed-Rate Senior 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.
4.250% Fixed Rate Senior Unsecured Notes due 2030
Debt Instrument [Line Items]
Aggregate principal amount of fixed-rate senior notes						$ 750,000,000
Debt instrument interest rate	4.25%
Debt instrument due year	2030
4.250% Fixed Rate Senior Unsecured Notes due 2030 | Fixed-Rate Senior 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
5.500% Fixed Rate Senior Unsecured Notes due 2030
Debt Instrument [Line Items]
Aggregate principal amount of fixed-rate senior notes				$ 400,000,000	$ 400,000,000
Debt instrument interest rate	5.50%
Debt instrument due year	2030
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, commencing October 15, 2022.

Partners' Capital and Distrib_3

Partners' Capital and Distributions - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Limited Partners Capital Account [Line Items]
Period of cash distribution to shareholders	45 days
Number of units hold in partnership	226,309,088	239,850,452	253,313,996	284,445,236
Conversion of Class B units and Class B shares into Class A shares	100%
Class A Shares
Limited Partners Capital Account [Line Items]
Number of units hold in partnership	68,367,647	44,002,846	33,672,068	18,028,308
Class B Shares
Limited Partners Capital Account [Line Items]
Number of units hold in partnership	157,941,441	195,847,606	219,641,928	266,416,928
Sponsors
Limited Partners Capital Account [Line Items]
Number of units hold in partnership	898,000	898,000	898,000	898,000
Sponsors | Class A Shares
Limited Partners Capital Account [Line Items]
Number of units hold in partnership	898,000
Sponsors | Class B Shares
Limited Partners Capital Account [Line Items]
Number of units hold in partnership	157,941,441

Partners' Capital and Distrib_4

Partners' Capital and Distributions - Schedule of Changes in Number of Shares Outstanding (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Limited Partners Capital Account [Line Items]
Shares Outstanding, Beginning Balance	239,850,452	253,313,996	284,445,236
Equity-based compensation	99,801	95,778	118,760
Repurchase Transaction		(13,559,322)	(31,250,000)
Shares Outstanding, Ending Balance	226,309,088	239,850,452	253,313,996
March 2023
Limited Partners Capital Account [Line Items]
Repurchase Transaction	(3,619,254)
June 2023
Limited Partners Capital Account [Line Items]
Repurchase Transaction	(3,350,084)
September 2023
Limited Partners Capital Account [Line Items]
Repurchase Transaction	(3,301,420)
November 2023
Limited Partners Capital Account [Line Items]
Repurchase Transaction	(3,370,407)
Class A Shares
Limited Partners Capital Account [Line Items]
Shares Outstanding, Beginning Balance	44,002,846	33,672,068	18,028,308
Equity-based compensation	99,801	95,778	118,760
Shares Outstanding, Ending Balance	68,367,647	44,002,846	33,672,068
Class A Shares | March 2021
Limited Partners Capital Account [Line Items]
Equity offering transaction			6,900,000
Class A Shares | October 2021
Limited Partners Capital Account [Line Items]
Equity offering transaction			8,625,000
Class A Shares | April 2022
Limited Partners Capital Account [Line Items]
Equity offering transaction		10,235,000
Class A Shares | May 2023
Limited Partners Capital Account [Line Items]
Equity offering transaction	12,765,000
Class A Shares | August 2023
Limited Partners Capital Account [Line Items]
Equity offering transaction	11,500,000
Class B Shares
Limited Partners Capital Account [Line Items]
Shares Outstanding, Beginning Balance	195,847,606	219,641,928	266,416,928
Repurchase Transaction		(13,559,322)	(31,250,000)
Shares Outstanding, Ending Balance	157,941,441	195,847,606	219,641,928
Class B Shares | March 2021
Limited Partners Capital Account [Line Items]
Equity offering transaction			(6,900,000)
Class B Shares | October 2021
Limited Partners Capital Account [Line Items]
Equity offering transaction			(8,625,000)
Class B Shares | April 2022
Limited Partners Capital Account [Line Items]
Equity offering transaction		(10,235,000)
Class B Shares | March 2023
Limited Partners Capital Account [Line Items]
Repurchase Transaction	(3,619,254)
Class B Shares | May 2023
Limited Partners Capital Account [Line Items]
Equity offering transaction	(12,765,000)
Class B Shares | June 2023
Limited Partners Capital Account [Line Items]
Repurchase Transaction	(3,350,084)
Class B Shares | August 2023
Limited Partners Capital Account [Line Items]
Equity offering transaction	(11,500,000)
Class B Shares | September 2023
Limited Partners Capital Account [Line Items]
Repurchase Transaction	(3,301,420)
Class B Shares | November 2023
Limited Partners Capital Account [Line Items]
Repurchase Transaction	(3,370,407)
Public
Limited Partners Capital Account [Line Items]
Shares Outstanding, Beginning Balance	43,104,846	32,774,068	17,130,308
Equity-based compensation	99,801	95,778	118,760
Shares Outstanding, Ending Balance	67,469,647	43,104,846	32,774,068
Public | March 2021
Limited Partners Capital Account [Line Items]
Equity offering transaction			6,900,000
Public | October 2021
Limited Partners Capital Account [Line Items]
Equity offering transaction			8,625,000
Public | April 2022
Limited Partners Capital Account [Line Items]
Equity offering transaction		10,235,000
Public | May 2023
Limited Partners Capital Account [Line Items]
Equity offering transaction	12,765,000
Public | August 2023
Limited Partners Capital Account [Line Items]
Equity offering transaction	11,500,000
Sponsors
Limited Partners Capital Account [Line Items]
Shares Outstanding, Beginning Balance	898,000	898,000	898,000
Shares Outstanding, Ending Balance	898,000	898,000	898,000
Sponsors | Class A Shares
Limited Partners Capital Account [Line Items]
Shares Outstanding, Ending Balance	898,000
Sponsors | Class B Shares
Limited Partners Capital Account [Line Items]
Shares Outstanding, Ending Balance	157,941,441

Partners' Capital and Distrib_5

Partners' Capital and Distributions - Schedule of Distributions Declared and Paid (Detail)	12 Months Ended
	Dec. 31, 2023 $ / shares
First Quarter 2021
Distribution Made To Limited Partner [Line Items]
Record Date	May 03, 2021
Distribution Date	May 13, 2021
Distribution per Class A share	$ 0.4526
Second Quarter 2021
Distribution Made To Limited Partner [Line Items]
Record Date	Aug. 09, 2021
Distribution Date	Aug. 13, 2021
Distribution per Class A share	$ 0.5042
Third Quarter 2021
Distribution Made To Limited Partner [Line Items]
Record Date	Nov. 04, 2021
Distribution Date	Nov. 12, 2021
Distribution per Class A share	$ 0.5104
Fourth Quarter 2021
Distribution Made To Limited Partner [Line Items]
Record Date	Feb. 03, 2022
Distribution Date	Feb. 14, 2022
Distribution per Class A share	$ 0.5167
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
Distribution Date	Nov. 14, 2023
Distribution per Class A share	$ 0.6175
Fourth Quarter 2023
Distribution Made To Limited Partner [Line Items]
Record Date	Feb. 08, 2024	[1]
Distribution Date	Feb. 14, 2024	[1]
Distribution per Class A share	$ 0.6343
[1] For more information, see Note 14 , Subsequent Events .

Equity-Based Compensation - Add

Equity-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity-based compensation expense	$ 1.7	$ 1.6	$ 1.4

Earnings per Share - Additional

Earnings per Share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Limited Partners Capital Account [Line Items]
Conversion of Class B units and Class B shares into Class A shares	100%
Class A Shares | Dilutive Restricted Shares
Limited Partners Capital Account [Line Items]
Weighted average number shares	40,210	70,795	103,672
Hess and GIP | Class A Shares
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, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Limited Partners Capital Account [Line Items]
Net income	$ 607.7	$ 620.6	$ 617.8
Less: Net income attributable to noncontrolling interest	489.1	536.7	571.4
Net income attributable to Hess Midstream LP	$ 118.6	$ 83.9	$ 46.4
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	$ 2.11	$ 2.03	$ 1.81
Net income attributable to Hess Midstream LP per Class A share, Diluted	$ 2.08	$ 2.01	$ 1.76
Weighted average Class A shares outstanding
Weighted average Class A shares outstanding, Basic	56.2	41.3	25.6
Weighted average Class A shares outstanding, Diluted	56.3	41.4	25.7

Earnings per Share - Summary of

Earnings per Share - Summary of Reconciliation of Numerator and Denominator of Diluted Earnings (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator
Net income (loss) attributable to Hess Midstream LP		$ 118.6	$ 83.9	$ 46.4
Effect of Exchange of Units of Partnership and Equal Number Shares of Common Stocks		489.1	536.7	571.4
Effect of income tax expense on additional income attributable to Hess Midstream LP	[1]	(119.3)	(130.9)	(139.4)
Diluted net income attributable to Hess Midstream LP		$ 488.4	$ 489.7	$ 478.4
Class A Shares
Denominator
Basic weighted average shares outstanding		56.2	41.3	25.6
Effect of dilutive securities
Diluted weighted average shares outstanding		56.3	41.4	25.7
Diluted net income attributable to Hess Midstream LP per Class A Share		$ 2.08	$ 2.01	$ 1.76
Class B Units/Shares
Denominator
Basic weighted average shares outstanding		177.9	202	246.7
Effect of dilutive securities
Diluted weighted average shares outstanding		234.2	243.4	272.4
Restricted equity-based awards		0.1	0.1	0.1
[1] Income tax effect is calculated assuming 24.39 % blended U.S. federal and state income tax rate.

Earnings per Share - Summary _2

Earnings per Share - Summary of Reconciliation of Numerator and Denominator of Diluted Earnings (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Federal and state income tax rate	24.39%

Concentration of Credit Risk -

Concentration of Credit Risk - Additional Information (Detail) - Customer Concentration Risk - Customers	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	98%	100%
Revenue
Concentration Risk [Line Items]
Concentration risk, percentage	99%	100%	100%

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	Jan. 11, 2024 USD ($)	Aug. 12, 2022 Barrels	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Loss Contingencies [Line Items]
No of produced water released | Barrels		34,000
Estimated remediation liabilities included in accrued liabilities			$ 1,700,000	$ 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			$ 5,300,000	$ 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
Lease obligations			0	$ 0
Unconditional purchase obligation, due in next fiscal year			15,800,000
Unconditional purchase obligation, due thereafter			$ 0
Subsequent Event
Loss Contingencies [Line Items]
Administrative penalty	$ 400,000

Segments - Additional Informati

Segments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2023 Railcar mi Segment	Sep. 30, 2019	Jan. 25, 2018	Jan. 24, 2018
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	3
Number of crude oil rail cars	550
McKenzie County
Segment Reporting Information [Line Items]
Crude oil pipeline length | mi	6
Minimum
Segment Reporting Information [Line Items]
Number of crude oil rail cars, operate as unit trains	100
Maximum
Segment Reporting Information [Line Items]
Number of crude oil rail cars, operate as unit trains	110
LM4
Segment Reporting Information [Line Items]
Percentage of ownership in joint venture		50%	50%	50%

Segments - Financial Data for E

Segments - Financial Data for Each Reportable Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenues and other income	$ 1,348.6	$ 1,275.2	$ 1,203.8
Net income (loss)	607.7	620.6	617.8
Net income (loss) attributable to Hess Midstream LP	118.6	83.9	46.4
Depreciation expense	192.5	181.3	165.6
Proportional share of equity affiliates' depreciation	5.1	5.1	5.1
Income from equity investments	7.7	5.3	10.6
Interest expense, net	179	149.3	105.4
Income tax expense	37.9	26.6	14.6
Adjusted EBITDA	1,022.2	982.9	908.5
Capital expenditures	245.7	231.8	183
Interest and Other
Segment Reporting Information [Line Items]
Net income (loss)	(225.6)	(183.1)	(127.3)
Net income (loss) attributable to Hess Midstream LP	(83.3)	(53.5)	(25.5)
Interest expense, net	179	149.3	105.4
Income tax expense	37.9	26.6	14.6
Adjusted EBITDA	(8.7)	(7.2)	(7.3)
Gathering Opco | Operating Segments
Segment Reporting Information [Line Items]
Revenues and other income	730	677.9	630.6
Net income (loss)	418.2	389.6	377.6
Net income (loss) attributable to Hess Midstream LP	101.6	66.4	36.3
Depreciation expense	115.6	107.4	101
Adjusted EBITDA	533.8	497	478.6
Capital expenditures	224.5	210.2	154
Processing and Storage | Operating Segments
Segment Reporting Information [Line Items]
Revenues and other income	501.7	470.8	435.7
Net income (loss)	345.2	329.1	263.8
Net income (loss) attributable to Hess Midstream LP	83.5	56.6	25.5
Depreciation expense	59.9	57.7	48.4
Proportional share of equity affiliates' depreciation	5.1	5.1	5.1
Income from equity investments	7.7	5.3	10.6
Adjusted EBITDA	410.2	391.9	317.3
Capital expenditures	11.2	8.8	28.8
Terminaling and Export | Operating Segments
Segment Reporting Information [Line Items]
Revenues and other income	116.9	126.5	137.5
Net income (loss)	69.9	85	103.7
Net income (loss) attributable to Hess Midstream LP	16.8	14.4	10.1
Depreciation expense	17	16.2	16.2
Adjusted EBITDA	86.9	101.2	119.9
Capital expenditures	$ 10	$ 12.8	$ 0.2

Segments - Total Assets for Rep

Segments - Total Assets for Reportable Segments (Detail) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Total assets		$ 3,789.5	$ 3,588.2
Interest and Other
Segment Reporting Information [Line Items]
Total assets		338.1	191.2
Gathering Opco | Operating Segments
Segment Reporting Information [Line Items]
Total assets		2,138.6	2,022
Processing and Storage | Operating Segments
Segment Reporting Information [Line Items]
Total assets	[1]	1,048.4	1,099.2
Terminaling and Export | Operating Segments
Segment Reporting Information [Line Items]
Total assets		$ 264.4	$ 275.8
[1] Includes investment in equity investees of $ 90.2 million as of December 31, 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	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Processing and Storage
Segment Reporting Information [Line Items]
Cash contributed to acquire equity investments	$ 90.2	$ 93.9

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Loss Carryforwards [Line Items]
Deferred tax asset related to investments	$ 278,200,000	$ 148,900,000
Additions to deferred tax asset	324,400,000	177,200,000
Deferred tax asset related to U.S. federal net operating loss carryforwards	38,300,000
Deferred tax asset related to U.S. state net operating loss carryforwards	$ 7,900,000
Operating loss carryforward expiration year	2029
Unrecognized tax benefits	$ 0
Class A Shares
Operating Loss Carryforwards [Line Items]
Additions to deferred tax asset	$ 185,100,000	$ 86,400,000	$ 89,000,000

Income Taxes - Schedule of Prov

Income Taxes - Schedule of Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Federal
Current	$ 0.1	$ 0.1	$ 0.1
Deferred taxes and other accruals	31.2	22.8	12.5
State	6.6	3.7	2
Total provision (benefit) for income taxes	$ 37.9	$ 26.6	$ 14.6

Income Taxes - Summary of Diffe

Income Taxes - Summary of Difference between the Effective Income Tax Rate and U.S. Statutory Rate (Detail)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Effective Income Tax Rate Reconciliation, Percent [Abstract]
U.S. statutory rate	21%	21%	21%
Noncontrolling interest in partnership	(15.90%)	(17.40%)	(19.00%)
State income taxes, net of federal income tax	0.80%	0.50%	0.30%
Effective rate	5.90%	4.10%	2.30%

Income Taxes - Components of De

Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Deferred tax liabilities
Investments	$ (0.5)	$ (0.5)
Total deferred tax liabilities	(0.5)	(0.5)
Deferred tax assets
Deferred tax asset related to investments	278.2	148.9
Net operating loss carryforwards	46.2	28.3
Total deferred tax assets	324.4	177.2
Net deferred tax assets (liabilities)	$ 323.9	$ 176.7

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions				12 Months Ended
	Feb. 14, 2024	Feb. 08, 2024	Jan. 29, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Subsequent Event [Line Items]
Distributions to unitholders - per unit/share				$ 2.3733	$ 2.1845	$ 1.9143
Class A Shares | Global Infrastructure Partners
Subsequent Event [Line Items]
Percentage of noncontrolling economic interest				69.80%
Percentage of ownership interest				30.20%
Subsequent Event
Subsequent Event [Line Items]
Distributions to unitholders decalred date			Jan. 29, 2024
Distribution paid date	Feb. 14, 2024
Distributions to unitholders record date		Feb. 08, 2024
Subsequent Event | Class A Shares
Subsequent Event [Line Items]
Quarterly cash distribution declared per share			$ 0.6343
Distribution made to limited partner, increase in percentage than prior year quarter declared			11.40%
Subsequent Event | Class A Shares | Global Infrastructure Partners
Subsequent Event [Line Items]
Net proceeds from offering		$ 377.5
Equity offering transaction		11,500,000
Underwriters’ option to purchase additional shares		1,500,000
Public Offering Price		$ 33.1
Decrease in percentage of noncontrolling economic interest		64.70%
Increase in percentage of ownership interest		35.30%
Subsequent Event | Class B Shares
Subsequent Event [Line Items]
Distributions to unitholders - per unit/share	$ 0.6343