0000950170-24-054507 | 10-Q | XBRL Viewer

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Equity Transactions - Additional Information (Detail) - USD ($)				3 Months Ended
	Mar. 11, 2024	Feb. 08, 2024	Mar. 27, 2023	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Class of Stock [Line Items]
Costs incurred to repurchase shares were charged to equity				$ 700,000	$ 900,000
5.500% Fixed Rate Senior Unsecured Notes due 2030
Class of Stock [Line Items]
Fixed-rate senior notes				400,000,000
Class A Shares
Class of Stock [Line Items]
Proceeds from Issuance of public equity offering		$ 0
Additions to deferred tax asset				100,400,000	$ 4,300,000
Increase (decrease) common unitholders				404,300,000		$ 340,200,000
Class A Shares \| GIP
Class of Stock [Line Items]
Equity offering transaction		11,500,000
Shares issued, price per share		$ 33.1
Net proceeds from offering		$ 377,500,000
Class A Shares \| GIP \| Maximum
Class of Stock [Line Items]
Underwriters’ option to purchase additional shares		1,500,000
Class A Shares \| Equity Offering Transactions
Class of Stock [Line Items]
Increase (decrease) common unitholders				$ 5,200,000
Class B Shares
Class of Stock [Line Items]
Repurchase of shares	2,816,901		3,619,254
Value of shares repurchased	$ 100,000,000		$ 100,000,000
Stock purchased price per share	$ 35.5		$ 27.63

Accrued Liabilities

3 Months Ended

Mar. 31, 2024

Accrued Liabilities, Current [Abstract]

Accrued Liabilities

Note 5. Accrued Liabilities

Accrued liabilities are as follows:


	March 31, 2024		December 31, 2023
(in millions)
Accrued interest	$	29.3	$	35.8
Accrued capital expenditures		27.7		42.9
Other accruals		29.1		27.2
Total	$	86.1	$	105.9

Property, Plant and Equipment - Components of Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 4,854.1	$ 4,818.7
Accumulated depreciation	(1,639.1)	(1,589.5)
Property, plant and equipment, net	3,215.0	3,229.2
Logistics Facilities and Railcars
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 409.3	409.2
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	19.9
Storage Facilities \| Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	20 years
Storage Facilities \| Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated useful life	25 years
Other
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 28.2	28.0
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	$ 97.8	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	$ 1,717.2	1,703.7
Gathering Assets \| Compressors, Pumping Stations and Terminals
Property Plant And Equipment [Line Items]
Total property, plant and equipment, at cost	$ 1,085.9	1,026.4
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	$ 460.0	460.0
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	$ 425.3	424.7
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

Segments

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Segments

Note 11. Segments

Our operations are located in the United States and are organized into three reportable segments: (1) gathering, (2) processing and storage and (3) terminaling and export. Our reportable segments comprise the structure used by our Chief Operating Decision Maker (“CODM”) to make key operating decisions and assess performance. These segments are strategic business units with differing products and services. Our CODM evaluates the segments’ operating performance based on multiple measures including Adjusted EBITDA, defined as net income (loss) before net interest expense, income tax expense (benefit), depreciation and amortization and our proportional share of depreciation of equity affiliates, as further adjusted to eliminate the impact of certain items that we do not consider indicative of our ongoing operating performance, such as transaction costs, other income and other non-cash, non‑recurring items, if applicable. The following tables reflect certain financial data for each reportable segment:


	Gathering		Processing and Storage		Terminaling and Export		Interest and Other			Consolidated
(in millions)
For the Three Months Ended March 31, 2024
Revenues and other income	$	188.1	$	139.1	$	28.4	$	-		$	355.6
Net income (loss)		108.9		100.7		17.3		(65.0	)		161.9
Net income (loss) attributable to Hess Midstream LP		36.4		33.4		5.9		(31.1	)		44.6
Depreciation expense		30.8		14.7		4.3		-			49.8
Proportional share of equity affiliates' depreciation		-		1.3		-		-			1.3
Income from equity investments		-		2.7		-		-			2.7
Interest expense, net		-		-		-		48.5			48.5
Income tax expense		-		-		-		14.3			14.3
Adjusted EBITDA		139.7		116.7		21.6		(2.2	)		275.8
Capital expenditures		31.7		3.4		0.1		-			35.2

	Gathering		Processing and Storage		Terminaling and Export		Interest and Other			Consolidated
(in millions)
For the Three Months Ended March 31, 2023
Revenues and other income	$	164.7	$	114.4	$	25.9	$	-		$	305.0
Net income (loss)		95.1		80.1		17.6		(50.6	)		142.2
Net income (loss) attributable to Hess Midstream LP		17.4		14.5		3.3		(14.5	)		20.7
Depreciation expense		28.8		14.5		4.1		-			47.4
Proportional share of equity affiliates' depreciation		-		1.3		-		-			1.3
Income from equity investments		-		1.6		-		-			1.6
Interest expense, net		-		-		-		41.6			41.6
Income tax expense		-		-		-		6.5			6.5
Adjusted EBITDA		123.9		95.9		21.7		(2.5	)		239.0
Capital expenditures		49.4		0.9		7.0		-			57.3

Total assets for the reportable segments are as follows:



	March 31, 2024		December 31, 2023
(in millions)
Gathering	$	2,139.0	$	2,138.6
Processing and Storage(1)		1,041.7		1,048.4
Terminaling and Export		259.9		264.4
Interest and Other		422.2		338.1
Total assets	$	3,862.8	$	3,789.5

(1) Includes investment in equity investees of $89.4 million as of March 31, 2024 and $90.2 million as of December 31, 2023.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-15

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org//1943274/2147482810/280-10-50-31

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Subparagraph (d)
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org//1943274/2147482810/280-10-50-42

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-34

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org//1943274/2147482810/280-10-50-41

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Basis of Presentation - Additional Information (Detail)	3 Months Ended	12 Months Ended
Basis of Presentation - Additional Information (Detail)	Mar. 31, 2024	Dec. 31, 2023
Hess Corporation and GIP II Blue Holding, L.P.
Accounting Policies [Line Items]
Noncontrolling interest percentage	64.20%	69.80%

Partners' Capital and Distributions - Schedule of Distributions Declared and Paid (Detail)

3 Months Ended

Mar. 31, 2024

$ / shares

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

Distribution Date

Feb. 14, 2024

Distribution per Class A Share

$ 0.6343

First Quarter 2024

Distribution Made To Limited Partner [Line Items]

Record Date

May 02, 2024

^[1]

Distribution Date

May 14, 2024

^[1]

Distribution per Class A Share

$ 0.6516

^[1]

[1]	For more information, see Note 12, Subsequent Events.

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - shares	Mar. 31, 2024	Dec. 31, 2023
Class A Shares
Common units issued	79,921,383	68,367,647
Common units outstanding	79,921,383	68,367,647
Class B Shares
Common units issued	143,624,540	157,941,441
Common units outstanding	143,624,540	157,941,441

Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2024

Accrued Liabilities, Current [Abstract]

Schedule of Accrued Liabilities

Accrued liabilities are as follows:


	March 31, 2024		December 31, 2023
(in millions)
Accrued interest	$	29.3	$	35.8
Accrued capital expenditures		27.7		42.9
Other accruals		29.1		27.2
Total	$	86.1	$	105.9

Related Party Transactions

3 Months Ended

Mar. 31, 2024

Related Party Transactions

Note 3. Related Party Transactions

In addition to the Class B Unit repurchase transactions and distributions to the Sponsors disclosed elsewhere in the Notes to consolidated financial statements, we had the following related party transactions:

Commercial Agreements

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 handing 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. Minimum volume commitments (“MVCs”) are equal to 80% of Hess’ nominations in each development plan that apply on a three-year rolling basis such that MVCs are set for the three years following the most recent nomination. Without our consent, the MVCs resulting from the nominated volumes for any quarter or year contained in any prior development plan 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 has an initial 10-year term effective January 1, 2014 (“Initial Term”). For this gathering sub-system, the Initial Term is 15 years effective January 1, 2014 and for the water services agreements the Initial Term is 14 years effective January 1, 2019. Each of our commercial agreements other than our storage services agreement includes an inflation escalator 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 is replaced by an inflation-based fee structure. The initial fee for the first year of the Secondary Term is 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 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 is 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) are recorded as deferred revenue and recognized as revenue as the credits are utilized or expire. At March 31, 2024, deferred revenue included in Accrued liabilities in the accompanying consolidated balance sheet was $1.3 million (December 31, 2023: none).

For the three months ended March 31, 2024 and 2023, approximately 98% 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 are as follows:


	Three Months Ended March 31,
	2024		2023
(in millions)
Affiliate services
Oil and gas gathering services	$	159.3	$	144.6
Processing and storage services		135.4		113.8
Terminaling and export services		27.4		25.2
Water gathering and disposal services		27.3		19.8
Total affiliate services	$	349.4	$	303.4
Third-party services		5.3		0.9
Total revenues from contracts with customers	$	354.7	$	304.3
Other income		0.9		0.7
Total revenues	$	355.6	$	305.0

During the three months ended March 31, 2024, we earned $0.1 million of MVC shortfall fees (three months ended March 31, 2023: $4.3 million).

The following table presents third-party pass-through costs for which we recognize revenues in an amount equal to the costs. These pass-through revenues are included in Affiliate services and the related pass-through costs are included in Operating and maintenance expenses in the accompanying unaudited consolidated statements of operations.


	Three Months Ended March 31,
	2024		2023
(in millions)
Electricity and other related fees	$	13.4	$	11.0
Produced water trucking and disposal costs		9.8		8.3
Rail transportation costs		-		(1.8	)
Total	$	23.2	$	17.5

Omnibus and Employee Secondment Agreements

Under our omnibus and employee secondment agreements, Hess provides substantial operational and administrative services to us in support of our assets and operations. For the three months ended March 31, 2024 and 2023, we had the following charges from Hess. The classification of these charges between operating and maintenance expenses and general and administrative expenses is based on the fundamental nature of the services being performed for our operations.


	Three Months Ended March 31,
	2024		2023
(in millions)
Operating and maintenance expenses	$	19.1	$	17.9
General and administrative expenses		3.5		3.9
Total	$	22.6	$	21.8

LM4 Agreements

Separately from our commercial agreements with Hess, we entered into a gas processing agreement with Little Missouri 4 (“LM4”), a 50/50 joint venture with Targa Resources Corp., under which we pay a processing fee per Mcf of natural gas and reimburse LM4 for our proportionate share of electricity costs. These processing fees are included in Operating and maintenance expenses in the accompanying consolidated statements of operations. In addition, we share profits and losses and receive distributions from LM4 under the LM4 amended and restated limited liability company agreement based on our ownership interest. For the three months ended March 31, 2024 and 2023, we had the following activity related to our agreements with LM4:


	Three Months Ended March 31,
	2024		2023
(in millions)
Processing fee incurred	$	6.8	$	5.0
Earnings from equity investments		2.7		1.6
Distributions received from equity investments		3.5		2.6

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-2

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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-1

+ Details

Basis of Presentation (Policies)	3 Months Ended
Basis of Presentation (Policies)	Mar. 31, 2024
Accounting Policies [Abstract]
Presentation	The consolidated financial statements included in this report reflect all normal and recurring adjustments which, in the opinion of management, are necessary for a fair presentation of our consolidated financial position at March 31, 2024 and December 31, 2023, the consolidated results of operations for the three months ended March 31, 2024 and 2023, and the consolidated cash flows for the three months ended March 31, 2024 and 2023. The Company has no items of other comprehensive income (loss); therefore, net income (loss) is equal to comprehensive income (loss). The unaudited results of operations for the interim periods reported are not necessarily indicative of results to be expected for the full year. The consolidated financial statements were prepared in accordance with the requirements of the Securities and Exchange Commission (“SEC”) for interim reporting. As permitted under those rules, certain notes or other financial information that are normally required by U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted from these interim consolidated financial statements. These financial statements, therefore, should be read in conjunction with the financial statements and related notes included in the Company’s annual report on Form 10‑K for the year ended December 31, 2023. We consolidate the activities of Hess Midstream Operations LP (“the Partnership”), as a variable interest entity (“VIE”) under U.S. GAAP. We have concluded that we are the primary beneficiary of the VIE, as defined in the accounting standards, since we have the power, through our ownership, to direct those activities that most significantly impact the economic performance of the Partnership. This conclusion was based on a qualitative analysis that considered the Partnership’s governance structure and the delegation of control provisions, which provide us the ability to control the operations of the Partnership. All financial statement activities associated with the VIE are captured within gathering, processing and storage, and terminaling and export segments (see Note 11, Segments). We currently do not have any independent assets or operations other than our interest in the Partnership. Our noncontrolling interest represents the approximate 64.2% interest in the Partnership retained by Hess Corporation (“Hess”) and GIP II Blue Holding, L.P. (“GIP” and together with Hess, the “Sponsors”) at March 31, 2024 (69.8% at December 31, 2023). See Note 2, Equity Transactions for a description of changes in noncontrolling interest related to the equity transactions.
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. We continue to assess the impact of this 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 continue to assess the impact of this ASU on our consolidated financial statements.

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Related Party Transaction [Line Items]
Deferred revenue	$ 1.3		$ 0.0
LM4
Related Party Transaction [Line Items]
Percentage of ownership in joint venture	50.00%
Hess
Related Party Transaction [Line Items]
MVC shortfall fees	$ 0.1	$ 4.3
Hess \| Customer Concentration Risk \| Revenue
Related Party Transaction [Line Items]
Revenues attributable to fee based commercial agreements	98.00%	100.00%
Hess \| Amended and Restated Commercial Agreement
Related Party Transaction [Line Items]
Minimum volume commitments, Description	Minimum volume commitments (“MVCs”) are equal to 80% of Hess’ nominations in each development plan that apply on a three-year rolling basis such that MVCs are set for the three years following the most recent nomination. Without our consent, the MVCs resulting from the nominated volumes for any quarter or year contained in any prior development plan 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	80.00%
Initial term of agreement	10 years
Agreement description	each of our commercial agreements with Hess has an initial 10-year term effective January 1, 2014 (“Initial Term”).
Inflation escalator capped rate	3.00%
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 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 is 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) are recorded as deferred revenue and recognized as revenue as the credits are utilized or expire. At March 31, 2024, deferred revenue included in Accrued liabilities in the accompanying consolidated balance sheet was $1.3 million (December 31, 2023: none).
Minimum volume commitments expressed as percentage of related party nominations in development plans	80.00%
Maximum consumer price index percentage	3.00%
Fee recalculation model description	the fee recalculation model under each applicable agreement is replaced by an inflation-based fee structure. The initial fee for the first year of the Secondary Term is 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	50.00%

Basis of Presentation

3 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

Note 1. Basis of Presentation

Unless the context otherwise requires, references in this report to the “Company,” “we,” “our,” “us” or like terms, refer to Hess Midstream LP and its subsidiaries.

The consolidated financial statements included in this report reflect all normal and recurring adjustments which, in the opinion of management, are necessary for a fair presentation of our consolidated financial position at March 31, 2024 and December 31, 2023, the consolidated results of operations for the three months ended March 31, 2024 and 2023, and the consolidated cash flows for the three months ended March 31, 2024 and 2023. The Company has no items of other comprehensive income (loss); therefore, net income (loss) is equal to comprehensive income (loss). The unaudited results of operations for the interim periods reported are not necessarily indicative of results to be expected for the full year.

The consolidated financial statements were prepared in accordance with the requirements of the Securities and Exchange Commission (“SEC”) for interim reporting. As permitted under those rules, certain notes or other financial information that are normally required by U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted from these interim consolidated financial statements. These financial statements, therefore, should be read in conjunction with the financial statements and related notes included in the Company’s annual report on Form 10‑K for the year ended December 31, 2023.

We consolidate the activities of Hess Midstream Operations LP (“the Partnership”), as a variable interest entity (“VIE”) under U.S. GAAP. We have concluded that we are the primary beneficiary of the VIE, as defined in the accounting standards, since we have the power, through our ownership, to direct those activities that most significantly impact the economic performance of the Partnership. This conclusion was based on a qualitative analysis that considered the Partnership’s governance structure and the delegation of control provisions, which provide us the ability to control the operations of the Partnership. All financial statement activities associated with the VIE are captured within gathering, processing and storage, and terminaling and export segments (see Note 11, Segments). We currently do not have any independent assets or operations other than our interest in the Partnership. Our noncontrolling interest represents the approximate 64.2% interest in the Partnership retained by Hess Corporation (“Hess”) and GIP II Blue Holding, L.P. (“GIP” and together with Hess, the “Sponsors”) at March 31, 2024 (69.8% at December 31, 2023). See Note 2, Equity Transactions for a description of changes in noncontrolling interest related to the equity transactions.

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. We continue to assess the impact of this 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 continue to assess the impact of this ASU on our consolidated financial statements.

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities
Net income	$ 161.9	$ 142.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense	49.8	47.4
Income from equity investments	(2.7)	(1.6)
Distributions from equity investments	3.5	2.6
Amortization of deferred financing costs	2.1	2.1
Equity-based compensation expense	0.5	0.6
Deferred income tax expense	14.2	6.5
Changes in assets and liabilities:
Accounts receivable - trade	(0.9)	(0.8)
Accounts receivable – affiliate	(5.2)	14.8
Other current and noncurrent assets	2.1	2.5
Accounts payable – trade	(7.3)	4.8
Accounts payable – affiliate	(15.8)	(3.7)
Accrued liabilities	(4.7)	(10.5)
Other current and noncurrent liabilities	(12.2)	(8.2)
Net cash provided by operating activities	185.3	198.7
Cash flows from investing activities
Additions to property, plant and equipment	(54.8)	(64.3)
Net cash used in investing activities	(54.8)	(64.3)
Cash flows from financing activities
Net proceeds from (repayments of) bank borrowings with maturities of 90 days or less	115.0	103.0
Bank borrowings with maturities of greater than 90 days
Repayments	(2.5)
Transaction costs	(0.6)	(0.2)
Class B unit repurchase	(100.0)	(100.0)
Distributions to shareholders/unitholders	(50.7)	(25.1)
Distributions to noncontrolling interest	(92.9)	(111.6)
Net cash used in financing activities	(131.7)	(133.9)
Increase (decrease) in cash and cash equivalents	(1.2)	0.5
Cash and cash equivalents, beginning of period	5.4	3.1
Cash and cash equivalents, end of period	4.2	3.6
Supplemental disclosure of non-cash investing and financing activities:
(Increase) decrease in accrued capital expenditures and related liabilities	19.6	7.0
Recognition of deferred tax asset	$ 100.4	$ 4.3

Related Party Transactions - Summary of MVC Shortfall Fees Earned (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Hess
Related Party Transaction [Line Items]
Total MVC shortfall fees	$ 0.1	$ 4.3

CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Assets
Cash and cash equivalents	$ 4.2	$ 5.4
Accounts receivable from contracts with customers:
Accounts receivable-trade	2.8	1.9
Accounts receivable-affiliate	$ 127.8	$ 122.5
Accounts Receivable, after Allowance for Credit Loss, Current, Related Party, Name [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Other current assets	$ 4.5	$ 7.0
Total current assets	139.3	136.8
Equity investments	89.4	90.2
Property, plant and equipment, net	3,215.0	3,229.2
Long-term receivable—affiliate	0.2	0.3
Deferred tax asset	410.5	324.4
Other noncurrent assets	8.4	8.6
Total assets	3,862.8	3,789.5
Liabilities
Accounts payable—trade	31.2	38.5
Accounts payable-affiliate	$ 21.2	$ 41.2
Accounts Payable, Current, Related Party, Name [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Accrued liabilities	$ 86.1	$ 105.9
Current maturities of long-term debt	15.0	12.5
Other current liabilities	3.7	12.1
Total current liabilities	157.2	210.2
Long-term debt	3,310.4	3,198.9
Deferred tax liability	0.4	0.5
Other noncurrent liabilities	13.1	16.7
Total liabilities	3,481.1	3,426.3
Partners' capital
Total Class A and Class B partners' capital	404.3	340.2
Noncontrolling interest	(22.6)	23.0
Total partners' capital	381.7	363.2
Total liabilities and partners' capital	3,862.8	3,789.5
Class A Shares
Partners' capital
Common unitholders	$ 404.3	$ 340.2

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues
Revenues	$ 354.7	$ 304.3
Type of Revenue [Extensible List]	us-gaap:ServiceMember	us-gaap:ServiceMember
Other income	$ 0.9	$ 0.7
Total revenues	355.6	305.0
Costs and expenses
Operating and maintenance expenses (exclusive of depreciation shown separately below)	78.1	62.5
Depreciation expense	49.8	47.4
General and administrative expenses	5.7	6.4
Total operating costs and expenses	133.6	116.3
Income from operations	222.0	188.7
Income from equity investments	2.7	1.6
Interest expense, net	48.5	41.6
Income before income tax expense	176.2	148.7
Income tax expense	14.3	6.5
Net income	161.9	142.2
Less: Net income attributable to noncontrolling interest	117.3	121.5
Net income attributable to Hess Midstream LP	44.6	20.7
Affiliate services
Revenues
Revenues	349.4	303.4
Third-party services
Revenues
Revenues	$ 5.3	$ 0.9
Class A Shares
Net income attributable to Hess Midstream LP per Class A share:
Net income attributable to Hess Midstream LP per Class A share, Basic	$ 0.60	$ 0.47
Net income attributable to Hess Midstream LP per Class A share, Diluted	$ 0.59	$ 0.47
Weighted average Class A shares outstanding
Weighted average Class A shares outstanding, Basic	75.1	44.0
Weighted average Class A shares outstanding, Diluted	75.2	44.1

Commitments and Contingencies

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 10. Commitments and Contingencies

Environmental Contingencies

The Company is subject to federal, state and local laws and regulations relating to the environment. On August, 12, 2022, the Company became aware of a produced water release from an underground pipeline located approximately 8 miles north of Ray, North Dakota. It is estimated that approximately 34,000 barrels of produced water were released, causing impacts to soils, crops, and groundwater. Remediation infrastructure was put in place and remediation and monitoring is ongoing.

As of March 31, 2024 our reserves for all estimated remediation liabilities, inclusive of the produced water release above, in Accrued liabilities and Other noncurrent liabilities were $2.2 million and $3.8 million, respectively, compared with $1.7 million and $5.3 million, respectively, as of December 31, 2023.

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 alerts the Company that it may have violated the State’s water pollution control laws, but neither imposes nor waives 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 the 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 March 31, 2024 and December 31, 2023, we did not have material accrued liabilities for legal contingencies.

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Mar. 31, 2024
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

Segments (Tables)

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Financial Data for Each Reportable Segment

The following tables reflect certain financial data for each reportable segment:


	Gathering		Processing and Storage		Terminaling and Export		Interest and Other			Consolidated
(in millions)
For the Three Months Ended March 31, 2024
Revenues and other income	$	188.1	$	139.1	$	28.4	$	-		$	355.6
Net income (loss)		108.9		100.7		17.3		(65.0	)		161.9
Net income (loss) attributable to Hess Midstream LP		36.4		33.4		5.9		(31.1	)		44.6
Depreciation expense		30.8		14.7		4.3		-			49.8
Proportional share of equity affiliates' depreciation		-		1.3		-		-			1.3
Income from equity investments		-		2.7		-		-			2.7
Interest expense, net		-		-		-		48.5			48.5
Income tax expense		-		-		-		14.3			14.3
Adjusted EBITDA		139.7		116.7		21.6		(2.2	)		275.8
Capital expenditures		31.7		3.4		0.1		-			35.2

	Gathering		Processing and Storage		Terminaling and Export		Interest and Other			Consolidated
(in millions)
For the Three Months Ended March 31, 2023
Revenues and other income	$	164.7	$	114.4	$	25.9	$	-		$	305.0
Net income (loss)		95.1		80.1		17.6		(50.6	)		142.2
Net income (loss) attributable to Hess Midstream LP		17.4		14.5		3.3		(14.5	)		20.7
Depreciation expense		28.8		14.5		4.1		-			47.4
Proportional share of equity affiliates' depreciation		-		1.3		-		-			1.3
Income from equity investments		-		1.6		-		-			1.6
Interest expense, net		-		-		-		41.6			41.6
Income tax expense		-		-		-		6.5			6.5
Adjusted EBITDA		123.9		95.9		21.7		(2.5	)		239.0
Capital expenditures		49.4		0.9		7.0		-			57.3

Total Assets for Reportable Segments

Total assets for the reportable segments are as follows:



	March 31, 2024		December 31, 2023
(in millions)
Gathering	$	2,139.0	$	2,138.6
Processing and Storage(1)		1,041.7		1,048.4
Terminaling and Export		259.9		264.4
Interest and Other		422.2		338.1
Total assets	$	3,862.8	$	3,789.5

(1) Includes investment in equity investees of $89.4 million as of March 31, 2024 and $90.2 million as of December 31, 2023.

Concentration of Credit Risk

3 Months Ended

Mar. 31, 2024

Risks and Uncertainties [Abstract]

Concentration of Credit Risk

Note 9. Concentration of Credit Risk

As of March 31, 2024 and 2023, Hess and its affiliates represented approximately 98% and 100%, respectively, of accounts receivable from contracts with customers. Total revenues attributable to Hess for the three months ended March 31, 2024 and 2023 were approximately 98% and 100%, respectively.

Accrued Liabilities - Schedule of Accrued Liabilities (Detail) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Accrued Liabilities, Current [Abstract]
Accrued capital expenditures	$ 27.7	$ 42.9
Accrued interest	29.3	35.8
Other accruals	29.1	27.2
Total	$ 86.1	$ 105.9

Segments - Total Assets for Reportable Segments (Detail) - USD ($)
$ in Millions

Mar. 31, 2024

Dec. 31, 2023

Segment Reporting Information [Line Items]

Total assets

$ 3,862.8

$ 3,789.5

Interest and Other

Segment Reporting Information [Line Items]

Total assets

422.2

338.1

Gathering Opco | Operating Segments

Segment Reporting Information [Line Items]

Total assets

2,139.0

2,138.6

Processing and Storage | Operating Segments

Segment Reporting Information [Line Items]

Total assets

^[1]

1,041.7

1,048.4

Terminaling and Export | Operating Segments

Segment Reporting Information [Line Items]

Total assets

$ 259.9

$ 264.4

[1]	Includes investment in equity investees of $89.4 million as of March 31, 2024 and $90.2 million as of December 31, 2023.

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 14: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Name Accounting Standards Codification
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-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
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-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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Reference 18: http://www.xbrl.org/2003/role/disclosureRef
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Reference 19: http://www.xbrl.org/2003/role/disclosureRef
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Reference 20: http://www.xbrl.org/2003/role/disclosureRef
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Reference 21: http://www.xbrl.org/2003/role/disclosureRef
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Reference 22: http://www.xbrl.org/2003/role/disclosureRef
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Reference 23: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 24: http://www.xbrl.org/2003/role/disclosureRef
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Reference 25: http://www.xbrl.org/2003/role/disclosureRef
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Reference 26: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

Debt and Interest Expense - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2024 USD ($)
Debt Instrument [Line Items]
Debt covenant, leverage ratio	550.00%
Ratio of debt to EBITDA	500.00%
Secured leverage ratio - Maximum	400.00%
Debt instrument covenant, description	The Credit Facilities contain representations and warranties, affirmative and negative covenants and events of default that the Partnership considers to be customary for an agreement of this type, including a covenant that requires the Partnership to maintain a ratio of total debt to EBITDA (as defined in the Credit Facilities) for the prior four fiscal quarters of not greater than 5.00 to 1.00 as of the last day of each fiscal quarter (5.50 to 1.00 during the specified period following certain acquisitions) and, prior to the Partnership obtaining an investment grade credit rating, a ratio of secured debt to EBITDA for the prior four fiscal quarters of not greater than 4.00 to 1.00 as of the last day of each fiscal quarter.
Carrying Value
Debt Instrument [Line Items]
Total debt	$ 3,325,400,000
Level 2
Debt Instrument [Line Items]
Total debt fair value	$ 3,249,100,000
Credit Facility
Debt Instrument [Line Items]
Credit facility - maturity year	2027
Maximum borrowing capacity	$ 1,400,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility - Term	5 years
Maximum borrowing capacity	$ 1,000,000,000
Borrowings	$ 455,000,000
Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Interest rate applicable margin	1.375%
Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Interest rate applicable margin	2.05%
Term Loan A Facility
Debt Instrument [Line Items]
Credit facility - Term	5 years
Maximum borrowing capacity	$ 400,000,000
Borrowings	$ 395,000,000
Term Loan A Facility \| Minimum
Debt Instrument [Line Items]
Interest rate applicable margin	1.65%
Term Loan A Facility \| Maximum
Debt Instrument [Line Items]
Interest rate applicable margin	2.55%
Fixed-Rate Senior Unsecured Notes
Debt Instrument [Line Items]
Debt covenant, leverage ratio	425.00%
5.500% Fixed Rate Senior Unsecured Notes due 2030
Debt Instrument [Line Items]
Aggregate principal amount of fixed-rate senior notes	$ 400,000,000
5.500% Fixed Rate Senior Unsecured Notes due 2030 \| Fixed-Rate Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.50%
Debt instrument due year	2030
Frequency of periodic interest payment	semi‑annually
Interest payment terms	Interest is payable semi‑annually on April 15 and October 15.
4.250% Fixed Rate Senior Unsecured Notes due 2030
Debt Instrument [Line Items]
Aggregate principal amount of fixed-rate senior notes	$ 750,000,000
4.250% Fixed Rate Senior Unsecured Notes due 2030 \| Fixed-Rate Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	4.25%
Debt instrument due year	2030
Frequency of periodic interest payment	semi‑annually
Interest payment terms	Interest is payable semi‑annually on February 15 and August 15.
5.625% Fixed Rate Senior Unsecured Notes due 2026
Debt Instrument [Line Items]
Aggregate principal amount of fixed-rate senior notes	$ 800,000,000
5.625% Fixed Rate Senior Unsecured Notes due 2026 \| Fixed-Rate Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.625%
Debt instrument due year	2026
Frequency of periodic interest payment	semi‑annually
Interest payment terms	Interest is payable semi‑annually on February 15 and August 15.
5.125% Fixed Rate Senior Unsecured Notes due 2028
Debt Instrument [Line Items]
Aggregate principal amount of fixed-rate senior notes	$ 550,000,000.0
5.125% Fixed Rate Senior Unsecured Notes due 2028 \| Fixed-Rate Senior Unsecured Notes
Debt Instrument [Line Items]
Debt instrument interest rate	5.125%
Debt instrument due year	2028
Frequency of periodic interest payment	semi‑annually
Interest payment terms	Interest is payable semi‑annually on June 15 and December 15.

Related Party Transactions - Summary of Revenues From Contracts With Customers Including Affiliated Services and Third-party Services on Disaggregated Basis (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	$ 354.7	$ 304.3
Other income	0.9	0.7
Total revenues	355.6	305.0
Affiliate
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	349.4	303.4
Third Party
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	5.3	0.9
Oil and Gas Gathering Services \| Affiliate
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	159.3	144.6
Processing and Storage Services \| Affiliate
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	135.4	113.8
Terminaling and Export Services \| Affiliate
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	27.4	25.2
Water Gathering and Disposal Services \| Affiliate
Disaggregation Of Revenue [Line Items]
Revenue from contract with customer including assessed tax	$ 27.3	$ 19.8

Partners' Capital and Distributions (Tables)

3 Months Ended

Mar. 31, 2024

Partners' Capital Notes [Abstract]

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 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	February 8, 2024	February 14, 2024	$	0.6343
First Quarter 2024(1)	May 2, 2024	May 14, 2024	$	0.6516

(1) For more information, see Note 12, Subsequent Events.

Segments - Financial Data for Each Reportable Segment (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Revenues and other income	$ 355.6	$ 305.0
Net income (loss)	161.9	142.2
Net income (loss) attributable to Hess Midstream LP	44.6	20.7
Depreciation expense	49.8	47.4
Proportional share of equity affiliates' depreciation	1.3	1.3
Income from equity investments	2.7	1.6
Interest expense, net	48.5	41.6
Income tax expense	14.3	6.5
Adjusted EBITDA	275.8	239.0
Capital expenditures	35.2	57.3
Interest and Other
Segment Reporting Information [Line Items]
Net income (loss)	(65.0)	(50.6)
Net income (loss) attributable to Hess Midstream LP	(31.1)	(14.5)
Interest expense, net	48.5	41.6
Income tax expense	14.3	6.5
Adjusted EBITDA	(2.2)	(2.5)
Gathering Opco \| Operating Segments
Segment Reporting Information [Line Items]
Revenues and other income	188.1	164.7
Net income (loss)	108.9	95.1
Net income (loss) attributable to Hess Midstream LP	36.4	17.4
Depreciation expense	30.8	28.8
Adjusted EBITDA	139.7	123.9
Capital expenditures	31.7	49.4
Processing and Storage \| Operating Segments
Segment Reporting Information [Line Items]
Revenues and other income	139.1	114.4
Net income (loss)	100.7	80.1
Net income (loss) attributable to Hess Midstream LP	33.4	14.5
Depreciation expense	14.7	14.5
Proportional share of equity affiliates' depreciation	1.3	1.3
Income from equity investments	2.7	1.6
Adjusted EBITDA	116.7	95.9
Capital expenditures	3.4	0.9
Terminaling and Export \| Operating Segments
Segment Reporting Information [Line Items]
Revenues and other income	28.4	25.9
Net income (loss)	17.3	17.6
Net income (loss) attributable to Hess Midstream LP	5.9	3.3
Depreciation expense	4.3	4.1
Adjusted EBITDA	21.6	21.7
Capital expenditures	$ 0.1	$ 7.0

Partners' Capital and Distributions - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2024
Partners' Capital Notes [Abstract]
Period of cash distribution to shareholders	45 days

Debt and Interest Expense

3 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Debt and Interest Expense

Note 6. Debt and Interest Expense

Fixed‑Rate Senior Notes

As of March 31, 2024, the Partnership had:

•

$400.0 million aggregate principal amount of 5.500% fixed‑rate senior unsecured notes due 2030 that were issued to qualified institutional investors. Interest is payable semi‑annually on April 15 and October 15.

•

$750.0 million aggregate principal amount of 4.250% fixed‑rate senior unsecured notes due 2030 that were issued to qualified institutional investors. Interest is payable semi‑annually on February 15 and August 15.

•

$550.0 million aggregate principal amount of 5.125% fixed‑rate senior unsecured notes due 2028 that were issued to qualified institutional investors. Interest is payable semi‑annually on June 15 and December 15.

•

$800.0 million aggregate principal amount of 5.625% fixed‑rate senior unsecured notes due 2026 that were issued to qualified institutional investors. Interest is payable semi‑annually on February 15 and August 15.

The notes described above are guaranteed by certain subsidiaries of the Partnership. Each of the indentures for the senior unsecured notes described above contains customary covenants that restrict our ability and the ability of our restricted subsidiaries to (i) declare or pay any dividend or make any other restricted payments; (ii) transfer or sell assets or subsidiary stock; (iii) incur additional debt; or (iv) make restricted investments, unless, at the time of and immediately after giving pro forma effect to such restricted payments and any related incurrence of indebtedness or other transactions, no default has occurred and is continuing or would occur as a consequence of such restricted payment and if the leverage ratio does not exceed 4.25 to 1.00. As of March 31, 2024, we were in compliance with all debt covenants under the indentures.

In addition, the covenants included in the indentures governing the senior unsecured notes contain provisions that allow the Company to satisfy the Partnership’s reporting obligations under the indenture, as long as any such financial information of the Company contains information reasonably sufficient to identify the material differences, if any, between the financial information of the Company, on the one hand, and the Partnership and its subsidiaries on a stand-alone basis, on the other hand and the Company does not directly own capital stock of any person other than the Partnership and its subsidiaries, or material business operations that would not be consolidated with the financial results of the Partnership and its subsidiaries. The Company is a holding company and has no independent assets or operations. Other than the interest in the Partnership and the effect of federal and state income taxes that are recognized at the Company level, there are no material differences between the consolidated financial statements of the Partnership and the consolidated financial statements of the Company.

Credit Facilities

As of March 31, 2024, the Partnership had $1.4 billion senior secured credit facilities (the “Credit Facilities”) consisting of a $1.0 billion 5-year revolving credit facility and a $400.0 million 5‑year Term Loan A facility. The Credit Facilities mature in July 2027. Facility fees accrue on the total capacity of the revolving credit facility. Borrowings under the 5-year Term Loan A facility generally bear interest at Secured Overnight Financing Rate (”SOFR”) plus the applicable margin ranging from 1.65% to 2.55%, while the applicable margin for the 5‑year syndicated revolving credit facility ranges from 1.375% to 2.050%. Pricing levels for the facility fee and interest rate margins are based on the Partnership’s ratio of total debt to EBITDA (as defined in the Credit Facilities). If the Partnership obtains an investment grade credit rating, the pricing levels will be based on the Partnership’s credit ratings in effect from time to time. As of March 31, 2024, borrowings of $455.0 million were drawn and outstanding under the Partnership’s revolving credit facility, and borrowings of $395.0 million, excluding deferred issuance costs, were drawn and outstanding under the Partnership’s Term Loan A facility.

The Credit Facilities can be used for borrowings and letters of credit for general corporate purposes. The Credit Facilities are guaranteed by each direct and indirect wholly owned material domestic subsidiary of the Partnership, and are secured by first priority perfected liens on substantially all of the presently owned and after-acquired assets of the Partnership and its direct and indirect wholly owned material domestic subsidiaries, including equity interests directly owned by such entities, subject to certain customary exclusions. The Credit Facilities contain representations and warranties, affirmative and negative covenants and events of default that the Partnership considers to be customary for an agreement of this type, including a covenant that requires the Partnership to maintain a ratio of total debt to EBITDA (as defined in the Credit Facilities) for the prior four fiscal quarters of not greater than 5.00 to 1.00 as of the last day of each fiscal quarter (5.50 to 1.00 during the specified period following certain acquisitions) and, prior to the Partnership obtaining an investment grade credit rating, a ratio of secured debt to EBITDA for the prior four fiscal quarters of not greater than 4.00 to 1.00 as of the last day of each fiscal quarter. As of March 31, 2024, the Partnership was in compliance with these financial covenants.

Fair Value Measurement

At March 31, 2024, our total debt had a carrying value of $3,325.4 million and had a fair value of approximately $3,249.1 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 March 31, 2024, 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.

Related Party Transactions - Summary of Classification of Charges between Operating and Maintenance Expenses and General and Administrative Expenses (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Related Party Transaction [Line Items]
Operating and maintenance expenses	$ 78.1	$ 62.5
Hess
Related Party Transaction [Line Items]
Operating and maintenance expenses	$ 19.1	$ 17.9
Operating Cost and Expense, Related Party, Type [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
General and administrative expenses	$ 3.5	$ 3.9
Selling, General, and Administrative Expenses, Related Party, Type [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Total	$ 22.6	$ 21.8

Related Party Transactions (Tables)

3 Months Ended

Mar. 31, 2024

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 are as follows:


	Three Months Ended March 31,
	2024		2023
(in millions)
Affiliate services
Oil and gas gathering services	$	159.3	$	144.6
Processing and storage services		135.4		113.8
Terminaling and export services		27.4		25.2
Water gathering and disposal services		27.3		19.8
Total affiliate services	$	349.4	$	303.4
Third-party services		5.3		0.9
Total revenues from contracts with customers	$	354.7	$	304.3
Other income		0.9		0.7
Total revenues	$	355.6	$	305.0

During the three months ended March 31, 2024, we earned $0.1 million of MVC shortfall fees (three months ended March 31, 2023: $4.3 million).

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


	Three Months Ended March 31,
	2024		2023
(in millions)
Electricity and other related fees	$	13.4	$	11.0
Produced water trucking and disposal costs		9.8		8.3
Rail transportation costs		-		(1.8	)
Total	$	23.2	$	17.5

For the three months ended March 31, 2024 and 2023, we had the following charges from Hess. The classification of these charges between operating and maintenance expenses and general and administrative expenses is based on the fundamental nature of the services being performed for our operations.


	Three Months Ended March 31,
	2024		2023
(in millions)
Operating and maintenance expenses	$	19.1	$	17.9
General and administrative expenses		3.5		3.9
Total	$	22.6	$	21.8

Summary of Activity Related to Agreements with Related Party

For the three months ended March 31, 2024 and 2023, we had the following activity related to our agreements with LM4:


	Three Months Ended March 31,
	2024		2023
(in millions)
Processing fee incurred	$	6.8	$	5.0
Earnings from equity investments		2.7		1.6
Distributions received from equity investments		3.5		2.6

Earnings per Share - Additional Information (Detail) - Class A Shares - shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Dilutive Restricted Shares
Limited Partners Capital Account [Line Items]
Weighted average number shares	40,427	60,566
Hess and GIP
Limited Partners Capital Account [Line Items]
Conversion of Class B units and Class B shares into Class A shares	100.00%

Related Party Transactions - Summary of Activity Related to Agreements with Related Party (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Related Party Transaction [Line Items]
Processing fee incurred	$ 78.1	$ 62.5
Earnings from equity investments	2.7	1.6
Distributions received from equity investments	3.5	2.6
LM4
Related Party Transaction [Line Items]
Processing fee incurred	$ 6.8	$ 5.0
Operating Cost and Expense, Related Party, Type [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Earnings from equity investments	$ 2.7	$ 1.6
Distributions received from equity investments	$ 3.5	$ 2.6

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Millions	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 44.6	$ 20.7

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482765/220-10-50-6

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480175/815-40-65-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-8

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-9

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-11

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-11

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-4

Reference 13: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480167/946-830-55-10

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483581/946-220-45-7

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(18))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Subsequent Events - Additional Information (Detail) - $ / shares		3 Months Ended
	Apr. 22, 2024	Mar. 31, 2024	Mar. 31, 2023
Subsequent Event [Line Items]
Distributions to unitholders - per unit/share		$ 0.6343	$ 0.5696
Subsequent Event
Subsequent Event [Line Items]
Distributions to unitholders decalred date	Apr. 22, 2024
Distribution payable date	May 14, 2024
Distributions to unitholders record date	May 02, 2024
Distribution made to limited partner, approximate increase in percentage than prior year quarter declared	2.70%
Subsequent Event \| Class A Shares
Subsequent Event [Line Items]
Quarterly cash distribution declared per share	$ 0.6516
Subsequent Event \| Class B Shares
Subsequent Event [Line Items]
Distributions to unitholders - per unit/share	$ 0.6516

CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (DEFICIT) (UNAUDITED) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Partners' Capital [Abstract]
Distributions to unitholders - per unit/share	$ 0.6343	$ 0.5696

Segments - Total Assets for Reportable Segments (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Processing and Storage
Segment Reporting Information [Line Items]
Cash contributed to acquire equity investments	$ 89.4	$ 90.2

Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2024

Property, Plant and Equipment [Abstract]

Components of Property, Plant and Equipment

Property, plant and equipment, at cost, is as follows:


	Estimated useful lives	March 31, 2024			December 31, 2023
(in millions, except for number of years)
Gathering assets
Pipelines	22 years	$	1,717.2		$	1,703.7
Compressors, pumping stations and terminals	22 to 25 years		1,085.9			1,026.4
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		425.3			424.7
Buildings	35 years		182.3			182.3
Logistics facilities and railcars	20 to 25 years		409.3			409.2
Storage facilities	20 to 25 years		19.9			19.9
Other	20 to 25 years		28.2			28.0
Construction-in-progress	N/A		97.8			136.3
Total property, plant and equipment, at cost			4,854.1			4,818.7
Accumulated depreciation			(1,639.1	)		(1,589.5	)
Property, plant and equipment, net		$	3,215.0		$	3,229.2

CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (DEFICIT) (UNAUDITED) - USD ($) $ in Millions	Total	Limited Partner Class A Shares	Noncontrolling Interest
Balance, beginning of period at Dec. 31, 2022	$ 529.0	$ 245.1	$ 283.9
Net income	142.2	20.7	121.5
Equity-based compensation	0.6	0.6
Distributions to unitholders	(136.7)	(25.1)	(111.6)
Recognition of deferred tax asset	4.3	4.3
Class B unit repurchase	(100.0)	(17.5)	(82.5)
Transaction costs	(0.9)	(0.2)	(0.7)
Balance, end of period at Mar. 31, 2023	438.5	227.9	210.6
Balance, beginning of period at Dec. 31, 2023	363.2	340.2	23.0
Net income	161.9	44.6	117.3
Equity-based compensation	0.5	0.5
Distributions to unitholders	(143.6)	(50.7)	(92.9)
Recognition of deferred tax asset	100.4	100.4
Sales of shares held by Sponsors		5.2	(5.2)
Class B unit repurchase	(100.0)	(35.6)	(64.4)
Transaction costs	(0.7)	(0.3)	(0.4)
Balance, end of period at Mar. 31, 2024	$ 381.7	$ 404.3	$ (22.6)

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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+ Details

Earnings per Share - Schedule of Earnings per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Limited Partners Capital Account [Line Items]
Net income	$ 161.9	$ 142.2
Less: Net income attributable to noncontrolling interest	117.3	121.5
Net income attributable to Hess Midstream LP	$ 44.6	$ 20.7
Class A Shares
Net income attributable to Hess Midstream LP per Class A share:
Net income attributable to Hess Midstream LP per Class A share, Basic	$ 0.60	$ 0.47
Net income attributable to Hess Midstream LP per Class A share, Diluted	$ 0.59	$ 0.47
Weighted average Class A shares outstanding
Weighted average Class A shares outstanding, Basic	75.1	44.0
Weighted average Class A shares outstanding, Diluted	75.2	44.1

Equity Transactions

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

Equity Transactions

Note 2. Equity Transactions

Equity Offering Transaction

On February 8, 2024, GIP sold an aggregate of 11,500,000 of our Class A shares representing limited partner interests (the “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 equity offering transaction. The above equity offering transaction was conducted pursuant to a registration rights agreement among us and the Sponsors. The Class A Shares sold in the offering were obtained by GIP by exchanging to us the respective number of their Class B units representing limited partner interests in the Partnership (the “Class B Units”), together with an equal number of Class B shares representing limited partner interests in the Company (the “Class B Shares”) held by the Company’s general partner. As a result, the total number of Class A and Class B Shares did not change. The Company retained control in the Partnership based on the delegation of control provisions, as described in Note 1, Basis of Presentation. As a result of the equity offering transaction described above, we recognized adjustments increasing the carrying amount of the Class A shareholders’ capital balance by $5.2 million and decreasing the carrying amount of noncontrolling interest by an equal amount to reflect the change in ownership interest.

Class B Unit Repurchases

On March 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 March 11, 2024, the Company, the Partnership and our Sponsors entered into a unit repurchase agreement pursuant to which the Partnership agreed to purchase from the Sponsors 2,816,901 Class B Units for an aggregate purchase price of approximately $100.0 million. The repurchase transaction was consummated on March 14, 2024. The purchase price per Class B Unit was $35.50, the closing price of the Class A Shares on March 11, 2024.

The repurchase transactions described above were funded using borrowings under the Partnership’s existing revolving credit facility (see Note 6, Debt and Interest Expense). Pursuant to the terms of the repurchase agreements described above, immediately following each purchase of the Class B Units from the Sponsors, the Partnership cancelled the repurchased units, and the Company cancelled, for no consideration, an equal number of its Class B Shares.

The repurchase transactions were accounted for in accordance with ASC 810 whereby changes in a parent’s ownership interest while the parent retains its controlling financial interest in its subsidiary are accounted for as equity transactions. The carrying amounts of the noncontrolling interest were adjusted to reflect the changes in the ownership interest with the difference between the amounts of consideration paid and the amounts by which the noncontrolling interest were adjusted recognized as a reduction in equity attributable to Class A shareholders. Distributions to noncontrolling interest holders related to the March 11, 2024 repurchase transaction exceeded the noncontrolling interest’s carrying value resulting in a deficit balance as shown in the accompanying consolidated statement of changes in partners’ capital (deficit).

We incurred approximately $0.7 million of costs directly attributable to the repurchase transactions that were charged to equity (three months ended March 31, 2023: $0.9 million).

As a result of the equity offering and the unit repurchase transactions described above, we also recognized an additional deferred tax asset of $100.4 million (three months ended March 31, 2023: $4.3 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 (deficit) due to the transactions being characterized as transactions among or with shareholders.

Partners' Capital and Distributions

3 Months Ended

Mar. 31, 2024

Partners' Capital Notes [Abstract]

Partners' Capital and Distributions

Note 7. Partners’ Capital and Distributions

Our partnership agreement requires that, within 45 days after the end of each quarter, we distribute all of our available cash, as defined in the partnership agreement, to shareholders of record on the applicable record date. The following table details the distributions declared and/or paid for the periods presented:


Period	Record Date	Distribution Date	Distribution per Class A Share
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	February 8, 2024	February 14, 2024	$	0.6343
First Quarter 2024(1)	May 2, 2024	May 14, 2024	$	0.6516

(1) For more information, see Note 12, Subsequent Events.

Commitments and Contingencies - Additional Information (Detail)		3 Months Ended
	Jan. 11, 2024 USD ($)	Mar. 31, 2024 USD ($) Barrels	Dec. 31, 2023 USD ($)
Commitments and Contingencies Disclosure [Abstract]
No of produced water released \| Barrels		34,000
Estimated remediation liabilities included in accrued liabilities		$ 2,200,000	$ 1,700,000
Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration]		Accrued Liabilities, Current	Accrued Liabilities, Current
Estimated remediation liabilities included in other noncurrent liabilities		$ 3,800,000	$ 5,300,000
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Accrued liabilities for legal contingencies		$ 0	$ 0
Administrative penalty	$ 400,000

Segments - Additional Information (Detail)	3 Months Ended
Segments - Additional Information (Detail)	Mar. 31, 2024 Segment
Segment Reporting [Abstract]
Number of reportable segments	3

Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Schedule of Earnings per Share

We calculate earnings per Class A Share as we do not have any other participating securities. Substantially all of income tax expense is attributed to earnings of Class A Shares reflective of our organizational structure. Class B Units of the Partnership together with the equal number of Class B Shares of the Company are convertible to Class A Shares of the Company on a one-for-one basis. In addition, our restricted equity-based awards may have a dilutive effect on our earnings per share. Diluted earnings per Class A Share are calculated using the “treasury stock method” or “if-converted method,” whichever is more dilutive.


	Three Months Ended March 31,
(in millions, except per share amounts)	2024		2023
Net income	$	161.9	$	142.2
Less: Net income attributable to noncontrolling interest		117.3		121.5
Net income attributable to Hess Midstream LP		44.6		20.7
Net income attributable to Hess Midstream LP per Class A share:
Basic:	$	0.60	$	0.47
Diluted:	$	0.59	$	0.47
Weighted average Class A shares outstanding:
Basic:		75.1		44.0
Diluted:		75.2		44.1

Subsequent Events

3 Months Ended

Mar. 31, 2024

Subsequent Events [Abstract]

Subsequent Events

Note 12. Subsequent Events

On April 22, 2024, the board of directors of our general partner declared a quarterly cash distribution of $0.6516 per Class A Share for the quarter ended March 31, 2024. The distribution represents an approximate 2.7% increase in the quarterly distribution per Class A Share for the first quarter of 2024 as compared with the fourth quarter of 2023. The distribution will be payable on May 14, 2024, to shareholders of record as of the close of business on May 2, 2024. Simultaneously, the Partnership will make a distribution of $0.6516 per Class B Unit of the Partnership to the Sponsors.

Concentration of Credit Risk - Additional Information (Detail) - Customer Concentration Risk - Customers	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	98.00%	100.00%
Revenue
Concentration Risk [Line Items]
Concentration risk, percentage	98.00%	100.00%

Earnings per Share

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Earnings per Share

Note 8. Earnings per Share


	Three Months Ended March 31,
(in millions, except per share amounts)	2024		2023
Net income	$	161.9	$	142.2
Less: Net income attributable to noncontrolling interest		117.3		121.5
Net income attributable to Hess Midstream LP		44.6		20.7
Net income attributable to Hess Midstream LP per Class A share:
Basic:	$	0.60	$	0.47
Diluted:	$	0.59	$	0.47
Weighted average Class A shares outstanding:
Basic:		75.1		44.0
Diluted:		75.2		44.1

For the three months ended March 31, 2024 and 2023 the weighted average number of Class A Shares outstanding included 40,427 and 60,566 dilutive restricted shares, respectively.

Related Party Transactions - Summary of Third-party Pass-through Costs for Which Revenues in Amount Equal to Costs are Recognized (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Related Party Transaction [Line Items]
Reimbursement revenue	$ 354.7	$ 304.3
Hess
Related Party Transaction [Line Items]
Total	23.2	17.5
Hess \| Electricity and Other Related Fees
Related Party Transaction [Line Items]
Reimbursement revenue	13.4	11.0
Hess \| Produced Water Trucking and Disposal Costs
Related Party Transaction [Line Items]
Reimbursement revenue	$ 9.8	8.3
Hess \| Rail Transportation Costs
Related Party Transaction [Line Items]
Reimbursement revenue		$ (1.8)

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479941/924-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-5

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-42

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-40

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-41

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-4

+ Details

Property, Plant and Equipment

3 Months Ended

Mar. 31, 2024

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Note 4. Property, Plant and Equipment

Property, plant and equipment, at cost, is as follows:


	Estimated useful lives	March 31, 2024			December 31, 2023
(in millions, except for number of years)
Gathering assets
Pipelines	22 years	$	1,717.2		$	1,703.7
Compressors, pumping stations and terminals	22 to 25 years		1,085.9			1,026.4
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		425.3			424.7
Buildings	35 years		182.3			182.3
Logistics facilities and railcars	20 to 25 years		409.3			409.2
Storage facilities	20 to 25 years		19.9			19.9
Other	20 to 25 years		28.2			28.0
Construction-in-progress	N/A		97.8			136.3
Total property, plant and equipment, at cost			4,854.1			4,818.7
Accumulated depreciation			(1,639.1	)		(1,589.5	)
Property, plant and equipment, net		$	3,215.0		$	3,229.2

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2024	Apr. 30, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Trading Symbol	HESM
Entity Registrant Name	Hess Midstream LP
Entity Central Index Key	0001789832
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity File Number	001-39163
Entity Tax Identification Number	84-3211812
Entity Address, Address Line One	1501 McKinney Street
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77010
City Area Code	713
Local Phone Number	496-4200
Entity Common Stock, Shares Outstanding		79,921,383
Document Quarterly Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	DE
Title of 12(b) Security	Class A shares representing limited partner interests
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes