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Hess Midstream (Detail) MMcf in Millions, $ in Millions								12 Months Ended
Hess Midstream (Detail) MMcf in Millions, $ in Millions	Dec. 16, 2019 USD ($) shares	Dec. 15, 2019	Mar. 22, 2019 USD ($)	Mar. 01, 2019 USD ($)	Jan. 25, 2018 MMcf	Apr. 10, 2017 USD ($) shares	Jul. 01, 2015 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	May 21, 2015
Variable Interest Entity [Line Items]
Liabilities								$ 12,486.0	$ 12,076.0
Cash and cash equivalents								1,739.0	1,545.0
Property, plant and equipment, net								$ 14,115.0	16,814.0
Hess Infrastructure Partners LP (HIP) \| Global Infrastructure Partners (GIP)
Variable Interest Entity [Line Items]
Noncontrolling interest ownership percentage		50.00%
Hess Infrastructure Partners LP's IPO of Hess Midstream Partners LP
Variable Interest Entity [Line Items]
Initial public offering common units sold (in shares) \| shares						16,997,000
Percentage of limited partnership interest in Hess Midstream Partners						30.50%
Net proceeds from initial public offering						$ 365.5
Percentage of general partnership interest						2.00%
Hess North Dakota Export Logistics Operations LP \| Hess Infrastructure Partners LP (HIP)
Variable Interest Entity [Line Items]
Controlling economic interest, percentage						20.00%
Hess Mentor Storage Holdings LLC \| Hess Infrastructure Partners LP (HIP)
Variable Interest Entity [Line Items]
Controlling economic interest, percentage						100.00%
Hess Midstream Partners LP (Hess Midstream Partners) \| Hess Infrastructure Partners LP (HIP)
Variable Interest Entity [Line Items]
Acquired ownership interest percentage	80.00%
Hess Midstream Partners LP (Hess Midstream Partners) \| Global Infrastructure Partners (GIP)
Variable Interest Entity [Line Items]
Percentage of limited partnership interest in Hess Midstream Partners						33.75%
Indirect ownership interest through Hess Infrastructure Partners LP (HIP), percentage						50.00%
Hess Midstream Partners LP (Hess Midstream Partners) \| LM4
Variable Interest Entity [Line Items]
Gas plant processing capacity \| MMcf					200
Joint venture percentage owned by Targa Resources Corp					50.00%
HIP Acquisition of Hess' Existing Water Services Business
Variable Interest Entity [Line Items]
Acquisition of water business - cash paid				$ 225.0
Sale of water management business, after-tax gain offset to noncontrolling interests				$ 78.0
HIP and Hess Midstream Partners Acquisition of Water Gathering Assets of Summit Midstream Partners LP’s Tioga Gathering System
Variable Interest Entity [Line Items]
Cash consideration			$ 90.0
Contingent payments subject to certain future performance			$ 10.0
Creation of Hess Midstream LP
Variable Interest Entity [Line Items]
Cash received	$ 301.0
Class B units issued to Hess Corporation (in shares) \| shares	115,000,000
Common stock exchange ratio	100.00%							100.00%
Creation of Hess Midstream LP \| Global Infrastructure Partners (GIP)
Variable Interest Entity [Line Items]
Ownership percentage in variable interest entity	47.00%
Hess Midstream LP
Variable Interest Entity [Line Items]
Ownership percentage in variable interest entity								47.00%
Cash and cash equivalents								$ 3.0	3.0
Property, plant and equipment, net								3,111.0	3,010.0
Hess Midstream LP \| Nonrecourse
Variable Interest Entity [Line Items]
Liabilities								2,026.0	1,941.0
Hess Midstream LP \| LM4
Variable Interest Entity [Line Items]
Equity method investment								$ 108.0	$ 108.0
Hess Corporation \| Hess Infrastructure Partners LP (HIP)
Variable Interest Entity [Line Items]
Ownership percentage in variable interest entity		50.00%
Percentage of interest sold										50.00%
Proceeds from sale of interest							$ 2,600.0
Hess Corporation \| Creation of Hess Midstream LP \| Class A Shares
Variable Interest Entity [Line Items]
Percentage of Class A Shares owned by public shareholders	6.00%
Hess Corporation \| Hess Midstream LP
Variable Interest Entity [Line Items]
Ownership percentage in variable interest entity	47.00%