CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues
Revenues	$ 364.6	$ 323.5	$ 719.3	$ 627.8
Type of Revenue [Extensible List]	us-gaap:ServiceMember	us-gaap:ServiceMember	us-gaap:ServiceMember	us-gaap:ServiceMember
Other income	$ 0.9	$ 0.5	$ 1.8	$ 1.2
Total revenues	365.5	324.0	721.1	629.0
Costs and expenses
Operating and maintenance expenses (exclusive of depreciation shown separately below)	87.5	73.1	165.6	135.6
Depreciation expense	50.5	47.0	100.3	94.4
General and administrative expenses	5.2	5.8	10.9	12.2
Total operating costs and expenses	143.2	125.9	276.8	242.2
Income from operations	222.3	198.1	444.3	386.8
Income from equity investments	3.7	1.7	6.4	3.3
Interest expense, net	49.7	43.8	98.2	85.4
Income before income tax expense	176.3	156.0	352.5	304.7
Income tax expense	16.0	8.1	30.3	14.6
Net income	160.3	147.9	322.2	290.1
Less: Net income attributable to noncontrolling interest	110.8	122.8	228.1	244.3
Net income attributable to Hess Midstream LP	49.5	25.1	94.1	45.8
Affiliate services
Revenues
Revenues	358.5	321.9	707.9	625.3
Third-party services
Revenues
Revenues	$ 6.1	$ 1.6	$ 11.4	$ 2.5
Class A Shares
Net income attributable to Hess Midstream LP per Class A share:
Net income attributable to Hess Midstream LP per Class A share, Basic	$ 0.59	$ 0.5	$ 1.19	$ 0.97
Net income attributable to Hess Midstream LP per Class A share, Diluted	$ 0.59	$ 0.5	$ 1.19	$ 0.97
Weighted average Class A shares outstanding
Weighted average Class A shares outstanding, Basic	83.8	50.1	79.5	47.1
Weighted average Class A shares outstanding, Diluted	83.8	50.2	79.5	47.1