CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenues
Revenues	$ 377.6	$ 362.5	$ 1,096.9	$ 990.3
Type of Revenue [Extensible List]	us-gaap:ServiceMember	us-gaap:ServiceMember	us-gaap:ServiceMember	us-gaap:ServiceMember
Other income	$ 0.9	$ 0.6	$ 2.7	$ 1.8
Total revenues	378.5	363.1	1,099.6	992.1
Costs and expenses
Operating and maintenance expenses (exclusive of depreciation shown separately below)	89.0	89.4	254.6	225.0
Depreciation expense	51.5	47.7	151.8	142.1
General and administrative expenses	6.3	6.0	17.2	18.2
Total operating costs and expenses	146.8	143.1	423.6	385.3
Income from operations	231.7	220.0	676.0	606.8
Income from equity investments	3.7	2.0	10.1	5.3
Interest expense, net	51.8	45.8	150.0	131.2
Income before income tax expense	183.6	176.2	536.1	480.9
Income tax expense	18.9	11.4	49.2	26.0
Net income	164.7	164.8	486.9	454.9
Less: Net income attributable to noncontrolling interest	106.1	129.5	334.2	373.8
Net income attributable to Hess Midstream LP	58.6	35.3	152.7	81.1
Affiliate services
Revenues
Revenues	371.4	361.3	1,079.3	986.6
Third-party services
Revenues
Revenues	$ 6.2	$ 1.2	$ 17.6	$ 3.7
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	$ 0.63	$ 0.57	$ 1.82	$ 1.56
Net income attributable to Hess Midstream LP per Class A share, Diluted	$ 0.63	$ 0.57	$ 1.82	$ 1.54
Weighted average Class A shares outstanding
Weighted average Class A shares outstanding, Basic	93.0	62.5	84.0	52.2
Weighted average Class A shares outstanding, Diluted	93.0	62.5	84.0	52.2