Description of Business	12 Months Ended
Dec. 31, 2023
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 (“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”). The Chevron Merger is subject to shareholder and regulatory approvals and other closing conditions. Upon consummation of the proposed transaction, Chevron will acquire Hess’ 37.8% 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). Significant Activities. In 2023, we added 70 MMcf/d of compression capacity by constructing one new greenfield compressor station and expanding an existing compressor station. Construction was also completed on an additional greenfield compressor station that, once put into operation in early 2024, will further increase compression capacity by approximately 30 MMcf/d. In 2022, we brought online two new greenfield compressor stations. In aggregate, the new stations provide an additional 85 MMcf/d of installed capacity and can be expanded up to 130 MMcf/d in the future. In 2020, we completed construction of a 150 MMcf/d natural gas processing capacity expansion at our Tioga Gas Plant (“TGP”). In the third quarter of 2021, we safely and successfully completed the planned maintenance turnaround at TGP, during which a series of plant tie-ins for the TGP expansion were also completed. The expansion was placed in service in October 2021. Total processing capacity of 400 MMcf/d became available concurrent with the completion of a third-party residue export expansion in February 2022. LM4 Joint Venture. On January 25, 2018, we entered into a 50/50 joint venture with Targa Resources Corp. (“Targa”) to construct a new 200 MMcf/d gas processing plant called Little Missouri 4 (“LM4”). LM4 was placed in service in the third quarter of 2019. Targa is the operator of the plant. See Note 4, Related Party Transactions.

Description of Business

12 Months Ended

Dec. 31, 2023

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 (“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”). The Chevron Merger is subject to shareholder and regulatory approvals and other closing conditions. Upon consummation of the proposed transaction, Chevron will acquire Hess’ 37.8% 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).

Significant Activities. In 2023, we added 70 MMcf/d of compression capacity by constructing one new greenfield compressor station and expanding an existing compressor station. Construction was also completed on an additional greenfield compressor station that, once put into operation in early 2024, will further increase compression capacity by approximately 30 MMcf/d.

In 2022, we brought online two new greenfield compressor stations. In aggregate, the new stations provide an additional 85 MMcf/d of installed capacity and can be expanded up to 130 MMcf/d in the future.

In 2020, we completed construction of a 150 MMcf/d natural gas processing capacity expansion at our Tioga Gas Plant (“TGP”). In the third quarter of 2021, we safely and successfully completed the planned maintenance turnaround at TGP, during which a series of plant tie-ins for the TGP expansion were also completed. The expansion was placed in service in October 2021. Total processing capacity of 400 MMcf/d became available concurrent with the completion of a third-party residue export expansion in February 2022.

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