Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2024

Related Party Transactions [Abstract]

Summary of Revenues From Contracts With Customers Including Affiliated Services and Third-party Services on Disaggregated Basis

Revenues from contracts with customers, including affiliated services and third-party services, on a disaggregated basis were as follows:

	Year Ended December 31,
	2024		2023		2022
(in millions)
Affiliate services
Oil and gas gathering services	$	673.4	$	633.8	$	600.8
Processing and storage services		561.1		496.0		470.8
Terminaling and export services		114.8		114.4		124.5
Water gathering and disposal services		118.5		93.9		77.1
Total affiliate services	$	1,467.8	$	1,338.1	$	1,273.2
Third-party services		24.1		8.0		-
Total revenues from contracts with customers	$	1,491.9	$	1,346.1	$	1,273.2
Other income		3.6		2.5		2.0
Total revenues	$	1,495.5	$	1,348.6	$	1,275.2

Summary of MVC Shortfall Fee Revenue Earned

The following table presents MVC shortfall fee revenue earned during each period:

	Year Ended December 31,
	2024		2023			2022
(in millions)
Oil and gas gathering services	$	-	$	8.2		$	93.0
Processing and storage services		-		(0.3	)		34.9
Terminaling and export services		0.1		3.2			32.0
Water gathering disposal services		-		-			0.4
Total	$	0.1	$	11.1		$	160.3

Summary of Third-party Pass-through Costs for Which Revenues in Amount Equal to Costs are Recognized and Classification of Charges between Operating and Maintenance Expenses and General and Administrative Expenses

The following table presents third-party pass-through costs for which we recognize revenues in an amount equal to the costs. These pass-through revenues are included in Affiliate services and the related pass-through costs are included in Operating and maintenance expenses in the accompanying consolidated statements of operations.

	Year Ended December 31,
	2024		2023			2022
(in millions)
Electricity and other related fees	$	54.9	$	47.8		$	44.8
Produced water trucking and disposal costs		42.9		38.5			33.1
Rail transportation costs		-		(3.4	)		3.5
Total	$	97.8	$	82.9		$	81.4

For the years ended December 31, 2024, 2023 and 2022, we had the following charges from Hess included in the operating and maintenance expenses and general and administrative expenses in the accompanying consolidated statement of operations. The classification of these charges between operating and maintenance expenses and general and administrative expenses is based on the fundamental nature of the services being performed for our operations.

	Year Ended December 31,
	2024		2023		2022
(in millions)
Operating and maintenance expenses	$	87.9	$	79.7	$	71.2
General and administrative expenses		16.6		17.5		15.9
Total	$	104.5	$	97.2	$	87.1

Summary of Activity Related to Agreements with Related Party

For the years ended December 31, 2024, 2023 and 2022, we had the following activity related to our agreements with LM4:

	Year Ended December 31,
	2024		2023		2022
(in millions)
Processing fee incurred	$	32.6	$	24.0	$	20.5
Earnings from equity investments	$	14.0	$	7.7	$	5.3
Distributions received from equity investments	$	17.2	$	11.4	$	13.0