CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenues
Affiliate services	$ 303.4	$ 312.1
Type of Revenue [Extensible List]	us-gaap:ServiceMember	us-gaap:ServiceMember
Other income	$ 1.6	$ 0.3
Total revenues	305.0	312.4
Costs and expenses
Operating and maintenance expenses (exclusive of depreciation shown separately below)	62.5	66.5
Depreciation expense	47.4	44.4
General and administrative expenses	6.4	6.0
Total operating costs and expenses	116.3	116.9
Income from operations	188.7	195.5
Income from equity investments	1.6	0.4
Interest expense, net	41.6	31.3
Income before income tax expense	148.7	164.6
Income tax expense	6.5	5.0
Net income	142.2	159.6
Less: Net income attributable to noncontrolling interest	121.5	142.7
Net income attributable to Hess Midstream LP	$ 20.7	$ 16.9
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	$ 0.47	$ 0.50
Net income attributable to Hess Midstream LP per Class A share, Diluted	$ 0.47	$ 0.49
Weighted average Class A shares outstanding
Weighted average Class A shares outstanding, Basic	44.0	33.7
Weighted average Class A shares outstanding, Diluted	44.1	33.8