Related Party Transactions (Tables)

3 Months Ended

Mar. 31, 2026

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 affiliate services and third-party services, on a disaggregated basis are as follows:


		Three Months Ended March 31,
		2026				2025
(in millions)
Affiliate services
Oil and gas gathering services		$	166.3			$	171.5
Processing and storage services			139.1				143.6
Terminaling and export services			36.1				29.5
Water gathering and disposal services			31.6				29.7
Total affiliate services		$	373.1			$	374.3
Third-party services			15.6				6.7
Total revenues from contracts with customers		$	388.7			$	381.0
Other income			1.4				1.0
Total revenues		$	390.1			$	382.0

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 unaudited consolidated statements of operations.


		Three Months Ended March 31,
		2026				2025
(in millions)
Electricity and other related fees		$	17.4			$	14.5
Produced water trucking and disposal costs			13.2				10.1
Total		$	30.6			$	24.6

For the three months ended March 31, 2026 and 2025, we had the following charges from Chevron included in Operating and maintenance expenses and General and administrative expenses in the accompanying unaudited consolidated statements 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.


		Three Months Ended March 31,
		2026				2025
(in millions)
Operating and maintenance expenses		$	17.1			$	24.9
General and administrative expenses			5.8				5.0
Total		$	22.9			$	29.9

Summary of Activity Related to Agreements with Related Party

For the three months ended March 31, 2026 and 2025, we had the following activity related to our agreements with LM4:


		Three Months Ended March 31,
		2026				2025
(in millions)
Processing fee incurred		$	10.0			$	8.3
Earnings from equity investments			3.2				3.4
Distributions received from equity investments			4.7				4.9