Earnings per Share/Limited Partner Unit (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Schedule of Earnings per Share Limited Partner Unit

Subsequent to the Restructuring, we calculate earnings per Class A Share and we do not have any other participating securities. Class B Units of the Partnership together with the equal number of Class B Shares of the Company are convertible to Class A Shares of the Company on a one-for-one basis. In addition, our restricted equity-based awards may have a dilutive effect on our earnings per share. Diluted earnings per Class A Share are calculated using the “treasury stock method” or “if-converted method”, whichever is more dilutive.

		Year Ended December 31,
(in millions, except per share amounts)	2019		2018		2017
Net income	$	317.7	$	325.5	$	242.0
Less: Net income attributable to net parent investment		(55.0)		(46.8)		25.4
Less: Net income attributable to noncontrolling interest		302.6		301.5		175.4
Net income attributable to Hess Midstream LP		70.1		70.8		41.2
Less: General partner's interest in net income    prior to the Restructuring		3.4		1.7		0.8
Limited partners' interest in net income	$	66.7	$	69.1	$	40.4
Common unitholders' interest in net income attributable    to Hess Midstream LP			$	34.6	$	20.2
Subordinated unitholders' interest in net income    attributable to Hess Midstream LP			$	34.5	$	20.2
Net income attributable to Hess Midstream LP    per Class A Share/limited partner unit*:
Basic:	$	1.21
Diluted:	$	1.20
Net income attributable to Hess Midstream LP    per limited partner unit (basic and diluted):
Common			$	1.27	$	0.75
Subordinated			$	1.27	$	0.75
Weighted average Class A Shares outstanding    subsequent to the Restructuring    (basic and diluted):		18.0
Weighted average limited partner units outstanding    prior to the Restructuring
Basic:
Common		27.3		27.3		26.9
Subordinated		27.3		27.3		26.9
Diluted:
Common		27.5		27.4		26.9
Subordinated		27.3		27.3		26.9

*Net income attributable to Hess Midstream LP per Class A Share/limited partner unit was calculated by combining net income per limited partner unit (common and subordinated) for the period prior to the Restructuring on December 16, 2019, and net income per Class A Share for the period subsequent to the Restructuring.