Related Party Transactions (Tables)

3 Months Ended

Mar. 31, 2020

Summary of Revenue From Contracts With Customers on Disaggregated Basis

Revenue from contracts with customers on a disaggregated basis are as follows:

	Three Months Ended March 31,
	2020		2019
(in millions)
Oil and gas gathering services	$	117.4	$	79.0
Water gathering and disposal services		24.2		15.4
Processing and storage services		96.8		66.3
Terminaling and export services		52.2		28.7
Total revenues from contracts with customers	$	290.6	$	189.4
Other income		0.2		0.2
Total revenues	$	290.8	$	189.6

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 third-party costs are included in Operating and maintenance expenses in the accompanying unaudited consolidated statements of operations.

	Three Months Ended March 31,
	2020		2019
(in millions)
Rail transportation costs		23.2		7.8
Produced water trucking and disposal costs		16.6		11.7
Electricity fees		9.5		6.8
Total	$	49.3	$	26.3

Under our omnibus and employee secondment agreements, Hess provides substantial operational and administrative services to us in support of our assets and operations. For the three months ended March 31, 2020 and 2019, we had the following charges from Hess. 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,
	2020		2019 ⁽¹⁾
(in millions)
Operating and maintenance expenses	$	15.5	$	10.6
General and administrative expenses		3.8		3.6
Total	$	19.3	$	14.2