Description of Business	12 Months Ended
Dec. 31, 2024
Description Of Business [Abstract]
Description of Business	Note 1. Description of Business Description of Business. We are a fee-based, growth-oriented, Delaware limited partnership formed by Hess Infrastructure Partners GP LLC, the general partner of Hess Infrastructure Partners LP (“HIP”), and our general partner to own, operate, develop and acquire a diverse set of midstream assets and provide fee-based services to Hess and third-party customers. HIP was originally formed in 2015 as a 50/50 joint venture between Hess and Global Infrastructure Partners, a part of BlackRock (“GIP” and, together with Hess, the “Sponsors”). We are managed and controlled by Hess Midstream GP LLC, the general partner of our general partner. On April 10, 2017, we completed an initial public offering (“IPO”) as a master limited partnership, pursuant to which HIP contributed to the Partnership a 20% controlling economic interest in each of (i) Hess North Dakota Pipelines Operations LP; (ii) Hess TGP Operations LP; and (iii) Hess North Dakota Export Logistics Operations LP (collectively, the “Joint Interest Assets”) and a 100% interest in Hess Mentor Storage Holdings LLC. HIP owned the remaining 80% economic interest in the Joint Interest Assets, a 100% interest in certain other businesses, including Hess’ Bakken water services business (“Hess Water Services”), which it acquired from Hess on March 1, 2019, and a 100% interest in Hess Midstream Partners GP LP (“MLP GP LP”), which held all of the Partnership’s outstanding incentive distribution rights and the general partner interest in the Partnership, and controlled the Partnership. On December 16, 2019, the Company and the Partnership completed the transactions (the “Restructuring”) contemplated by the Partnership Restructuring Agreement, dated October 3, 2019, by and among the Company, the Partnership and the other parties thereto. Pursuant to the Restructuring, the Partnership acquired HIP, including HIP’s 80% interest in the Joint Interest Assets, 100% interest in Hess Water Services and the outstanding economic general partner interest and incentive distribution rights in the Partnership. The Partnership’s organizational structure converted from a master limited partnership into an “Up-C” structure in which the Partnership’s public unitholders received newly issued Class A Shares in the Company in a one-for-one exchange. Class A Shares commenced trading on the New York Stock Exchange under the former symbol “HESM” on December 17, 2019. As a result of the Restructuring, the Company was delegated control of the Partnership and replaced the Partnership as its publicly traded successor. The Partnership changed its name to “Hess Midstream Operations LP” and became a consolidated subsidiary of the Company. After consummation of the Restructuring, the Sponsors and their affiliates own an aggregate of 898,000 Class A shares in the Company, all of the Class B units representing noncontrolling limited partner interests in the Partnership, 100% interest in the general partner of the Company and, through their ownership of the general partner, continue to have the right to elect the entire board of directors. On October 22, 2023, Hess entered into an Agreement and Plan of Merger (the “Chevron Merger Agreement”) with Chevron Corporation (“Chevron”) and Yankee Merger Sub Inc., a direct, wholly-owned subsidiary of Chevron (“Merger Subsidiary”). The Chevron Merger Agreement provides that, among other things and subject to the terms and conditions of the Chevron Merger Agreement, Merger Subsidiary will be merged with and into Hess, with Hess surviving and continuing as the surviving corporation in the merger as a direct, wholly-owned subsidiary of Chevron (such transaction, the “Chevron Merger”). On May 28, 2024, holders of a majority of Hess’ outstanding common stock voted to approve the Chevron Merger. Hess Guyana Exploration Limited (“HGEL”), a wholly-owned subsidiary of Hess, is currently in arbitration relating to the applicability of a right of first refusal (the “Stabroek ROFR”) contained in the operating agreement among HGEL and affiliates of Exxon Mobil Corporation and China National Offshore Oil Corporation. The arbitration merits hearing about the applicability of the Stabroek ROFR to the Chevron Merger has been scheduled for May 2025, with a decision expected in the third quarter. Hess cannot predict the date on which the Chevron Merger will be completed because it is subject to conditions beyond Hess’ control, including the outcome of the arbitration. If the Chevron Merger is completed, Chevron will acquire Hess’ 37.8% ownership in the Company, including its right to appoint four directors to the Company’s Board. The Company’s contract structure remains in place. Our assets are primarily located in the Bakken and Three Forks shale plays in the Williston Basin area of North Dakota, which we collectively refer to as the Bakken. Our assets and operations are organized into the following three segments: (i) gathering, (ii) processing and storage and (iii) terminaling and export (see Note 12, Segments). LM4 Joint Venture. On January 25, 2018, we entered into a 50/50 joint venture with Targa Resources Corp. (“Targa”) to construct a new 200 MMcf/d gas processing plant called Little Missouri 4 (“LM4”). LM4 was placed in service in 2019. Targa is the operator of the plant. See Note 4, Related Party Transactions.

Description of Business

12 Months Ended

Dec. 31, 2024

Note 1. Description of Business

Description of Business. We are a fee-based, growth-oriented, Delaware limited partnership formed by Hess Infrastructure Partners GP LLC, the general partner of Hess Infrastructure Partners LP (“HIP”), and our general partner to own, operate, develop and acquire a diverse set of midstream assets and provide fee-based services to Hess and third-party customers. HIP was originally formed in 2015 as a 50/50 joint venture between Hess and Global Infrastructure Partners, a part of BlackRock (“GIP” and, together with Hess, the “Sponsors”). We are managed and controlled by Hess Midstream GP LLC, the general partner of our general partner.

On April 10, 2017, we completed an initial public offering (“IPO”) as a master limited partnership, pursuant to which HIP contributed to the Partnership a 20% controlling economic interest in each of (i) Hess North Dakota Pipelines Operations LP; (ii) Hess TGP Operations LP; and (iii) Hess North Dakota Export Logistics Operations LP (collectively, the “Joint Interest Assets”) and a 100% interest in Hess Mentor Storage Holdings LLC. HIP owned the remaining 80% economic interest in the Joint Interest Assets, a 100% interest in certain other businesses, including Hess’ Bakken water services business (“Hess Water Services”), which it acquired from Hess on March 1, 2019, and a 100% interest in Hess Midstream Partners GP LP (“MLP GP LP”), which held all of the Partnership’s outstanding incentive distribution rights and the general partner interest in the Partnership, and controlled the Partnership.

On December 16, 2019, the Company and the Partnership completed the transactions (the “Restructuring”) contemplated by the Partnership Restructuring Agreement, dated October 3, 2019, by and among the Company, the Partnership and the other parties thereto. Pursuant to the Restructuring, the Partnership acquired HIP, including HIP’s 80% interest in the Joint Interest Assets, 100% interest in Hess Water Services and the outstanding economic general partner interest and incentive distribution rights in the Partnership. The Partnership’s organizational structure converted from a master limited partnership into an “Up-C” structure in which the Partnership’s public unitholders received newly issued Class A Shares in the Company in a one-for-one exchange. Class A Shares commenced trading on the New York Stock Exchange under the former symbol “HESM” on December 17, 2019. As a result of the Restructuring, the Company was delegated control of the Partnership and replaced the Partnership as its publicly traded successor. The Partnership changed its name to “Hess Midstream Operations LP” and became a consolidated subsidiary of the Company. After consummation of the Restructuring, the Sponsors and their affiliates own an aggregate of 898,000 Class A shares in the Company, all of the Class B units representing noncontrolling limited partner interests in the Partnership, 100% interest in the general partner of the Company and, through their ownership of the general partner, continue to have the right to elect the entire board of directors.

On October 22, 2023, Hess entered into an Agreement and Plan of Merger (the “Chevron Merger Agreement”) with Chevron Corporation (“Chevron”) and Yankee Merger Sub Inc., a direct, wholly-owned subsidiary of Chevron (“Merger Subsidiary”). The Chevron Merger Agreement provides that, among other things and subject to the terms and conditions of the Chevron Merger Agreement, Merger Subsidiary will be merged with and into Hess, with Hess surviving and continuing as the surviving corporation in the merger as a direct, wholly-owned subsidiary of Chevron (such transaction, the “Chevron Merger”). On May 28, 2024, holders of a majority of Hess’ outstanding common stock voted to approve the Chevron Merger. Hess Guyana Exploration Limited (“HGEL”), a wholly-owned subsidiary of Hess, is currently in arbitration relating to the applicability of a right of first refusal (the “Stabroek ROFR”) contained in the operating agreement among HGEL and affiliates of Exxon Mobil Corporation and China National Offshore Oil Corporation. The arbitration merits hearing about the applicability of the Stabroek ROFR to the Chevron Merger has been scheduled for May 2025, with a decision expected in the third quarter. Hess cannot predict the date on which the Chevron Merger will be completed because it is subject to conditions beyond Hess’ control, including the outcome of the arbitration. If the Chevron Merger is completed, Chevron will acquire Hess’ 37.8% ownership in the Company, including its right to appoint four directors to the Company’s Board. The Company’s contract structure remains in place.

Our assets are primarily located in the Bakken and Three Forks shale plays in the Williston Basin area of North Dakota, which we collectively refer to as the Bakken. Our assets and operations are organized into the following three segments: (i) gathering, (ii) processing and storage and (iii) terminaling and export (see Note 12, Segments).

LM4 Joint Venture. On January 25, 2018, we entered into a 50/50 joint venture with Targa Resources Corp. (“Targa”) to construct a new 200 MMcf/d gas processing plant called Little Missouri 4 (“LM4”). LM4 was placed in service in 2019. Targa is the operator of the plant. See Note 4, Related Party Transactions.