Income Taxes - Summary of Difference between the Effective Income Tax Rate and U.S. Statutory Rate (Detail)		12 Months Ended
		Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]
U.S. statutory rate		21.00%	[1]	21.00%	[2]	35.00%	[2]
Non-taxable income from pre-Restructuring period		(21.40%)	[1]	(20.60%)	[2]	(37.60%)	[2]
Change in enacted tax laws	[2]					(1.70%)
Noncontrolling interest in partnership	[1]	0.40%
Valuation allowance	[2]			(0.40%)		4.30%

[1] Represents effective income tax rate reconciliation for Hess Midstream LP.

[2] Represents effective income tax rate reconciliation for the pre-Restructuring period, inclusive of stand-alone income tax provision for Hess Water Services.