Description Of Business.

No definition available.

Name:	hesm_DescriptionOfBusinessLineItems
Namespace Prefix:	hesm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Gas processing plant capacity.

+ References

No definition available.

+ Details

Name:	hesm_GasProcessingPlantCapacity
Namespace Prefix:	hesm_
Data Type:	dtr-types:volumeItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of ownership in joint venture.

+ References

No definition available.

+ Details

Name:	hesm_PercentageOfOwnershipInJointVenture
Namespace Prefix:	hesm_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482987/272-10-50-3

+ Details

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of limited partner units outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-5

+ Details

Name:	us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 49
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-49

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-18

+ Details

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=hesm_ChevronCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=hesm_LittleMissouriFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=hesm_TargaResourcesCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=hesm_HessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=hesm_GlobalInfrastructurePartnersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=hesm_HessMidstreamPartnersGeneralPartnerLimitedPartnershipMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=hesm_HessInfrastructurePartnersLimitedPartnershipMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_IPOMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=hesm_HessMentorStorageHoldingsLimitedLiabilityCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=hesm_HessInfrastructurePartnersLimitedPartnershipJointInterestAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=hesm_HessWaterServicesAndHessMidstreamPartnersGeneralPartnerLimitedPartnerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=hesm_HessAndGIPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Description of Business - Additional Information (Detail)			12 Months Ended
	Dec. 16, 2019 shares	Apr. 10, 2017	Dec. 31, 2024 Segment shares	Dec. 31, 2023 shares	Oct. 22, 2023	Dec. 31, 2022 shares	Dec. 31, 2021 shares	Sep. 30, 2019	Jan. 25, 2018 MMcf	Jan. 24, 2018
Description Of Business [Line Items]
Number of operating segments \| Segment			3
Number of units hold in partnership			218,014,126	226,309,088		239,850,452	253,313,996
Chevron Corporation
Description Of Business [Line Items]
Percentage of ownership					37.80%
LM4
Description Of Business [Line Items]
Percentage of ownership in joint venture								50.00%	50.00%	50.00%
Gas processing plant capacity \| MMcf									200
LM4 \| Targa Resources Corp.
Description Of Business [Line Items]
Percentage of ownership in joint venture									50.00%	50.00%
Common Class A
Description Of Business [Line Items]
Number of units hold in partnership			104,086,900	68,367,647		44,002,846	33,672,068
Hess
Description Of Business [Line Items]
Percentage of ownership in joint venture			50.00%
Global Infrastructure Partners
Description Of Business [Line Items]
Percentage of ownership in joint venture			50.00%
Hess Midstream Partners GP Limited Partner
Description Of Business [Line Items]
Percentage of ownership interest		100.00%
Hess Infrastructure Partners LP \| IPO
Description Of Business [Line Items]
Percentage of ownership interest		20.00%
Hess Mentor Storage Holdings Limited Liability Company \| IPO
Description Of Business [Line Items]
Percentage of ownership interest		100.00%
Hess Infrastructure Partners Limited Partnership Joint Interest Assets
Description Of Business [Line Items]
Percentage of ownership interest	80.00%	80.00%
Hess Water Services and Hess Midstream Partners GP Limited Partner
Description Of Business [Line Items]
Percentage of ownership interest	100.00%	100.00%
Hess and GIP \| Common Class A
Description Of Business [Line Items]
Number of units hold in partnership	898,000