Basis of Presentation - Additional Information (Detail)	9 Months Ended
Sep. 30, 2020
Hess Infrastructure Partners Limited Partnership Joint Interest Assets
Accounting Policies [Line Items]
Noncontrolling interest percentage prior to restructuring	80.00%
Hess and GIP
Accounting Policies [Line Items]
Noncontrolling interest percentage	93.70%

Limited liability company LLC or limited partnership LP managing member or general partner ownership non-controlling interest prior to restructuring.

No definition available.

Name:	hesm_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipNonControllingInterestPriorToRestructuring
Namespace Prefix:	hesm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration