Hess Midstream Partners LP - Initial Public Offering - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
Apr. 30, 2017	Dec. 31, 2017
Limited Partners' Capital Account [Line Items]
Noncontrolling interest, ownership percentage	50.00%	50.00%
Public Unit Holders
Limited Partners' Capital Account [Line Items]
Percentage of ownership interest in Partnership	30.50%	30.50%
Hess Infrastructure Partners LP (HIP)
Limited Partners' Capital Account [Line Items]
Partnership controlling interest in operating companies, percentage	80.00%	80.00%
Percentage of economic interest in the Partnership plus incentive distribution rights of general partner	2.00%	2.00%
Global Infrastructure Partners (GIP)
Limited Partners' Capital Account [Line Items]
Initial public offering partial proceeds distribution percentage	50.00%	50.00%
Percentage of indirect ownership interest		a 50% indirect ownership interest through HIP
Hess Corporation
Limited Partners' Capital Account [Line Items]
Initial public offering partial proceeds distribution percentage	50.00%	50.00%
Ownership percentage in Hess Infrastructure Partners LP (HIP)	50.00%	50.00%
Percentage of indirect ownership interest		a 50% indirect ownership interest through HIP
Hess Midstream Partners LP
Limited Partners' Capital Account [Line Items]
Initial public offering common units sold	16,997,000
Initial public offering sale price per unit	$ 23
Net proceeds from initial public offering	$ 365.5
Of this amount distributed 50/50 to Hess Corporation and GIP	$ 350.0
Partnership controlling interest in operating companies, percentage	20.00%	20.00%
Hess Midstream Partners LP \| Global Infrastructure Partners (GIP)
Limited Partners' Capital Account [Line Items]
Percentage of ownership interest in Partnership	33.75%	33.75%
Hess Midstream Partners LP \| Hess Corporation
Limited Partners' Capital Account [Line Items]
Percentage of ownership interest in Partnership	33.75%	33.75%

Initial public offering proceeds to be distributed evenly between parent and partner.

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Controlling interest in the operating companies that comprise the midstream joint venture.

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Initial public offering partial proceeds distribution percentage.

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

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Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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Description of the different classes of member or limited partner interests and the respective rights, preferences, and privileges of each class, and any liability limitations of members or limited partners of the LLC or LP.

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-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The number of units sold in a public offering of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
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The cash inflow associated with the amount received from entity's first offering of stock to the public.

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-Publisher FASB
-Name Accounting Standards Codification
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Per share or per unit amount of equity securities issued.

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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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-Publisher FASB
-Name Accounting Standards Codification
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