Related Party Agreements and Transactions (Tables)

12 Months Ended

Dec. 31, 2018

Revenue received from related parties related to service, rental, and product sales were as follows:



(In millions)	2018		2017		2016
Service revenue
MPC	$	2,159	$	1,082	$	936
Rental income
MPC	718		279		235
Product sales⁽¹⁾
MPC	$	49	$	8	$	11


(1)	There were additional product sales to MPC that net to zero within the consolidated financial statements as the transactions are recorded net due to the terms of the agreements under which such product was sold. For 2018, 2017, and 2016, these sales totaled $440 million, $254 million and $46 million, respectively

Summary of Fees Received for Operating Pipelines for Related Parties Included in Other Income - Related Parties

MPLX has operating agreements with MPC under which it receives a fee for operating MPC’s retained pipeline assets, a fixed annual fee for providing oversight and management services required to run the marine business and is also reimbursed for personnel services. MPLX also receives management fee revenue for engineering, construction and administrative services for operating certain of its equity method investments. The revenue received from these related parties, included in “Other income - related parties” on the Consolidated Statements of Income, was as follows:



(In millions)	2018		2017		2016
MPC	$	41	$	40	$	45
MarkWest Utica EMG	17		17		16
Ohio Gathering	16		16		15
Jefferson Dry Gas	6		6		3
Sherwood Midstream	12		8		—
Other	7		5		7
Total	$	99	$	92	$	86

Schedule of Entity Wide Information Allocated Related Party Omnibus Agreement Costs by Income Stmt Line

MPC provides executive management services and certain general and administrative services to MPLX under the terms of an omnibus agreement. Expenses incurred under this agreement are shown in the table below by the income statement line where they were recorded. Charges for services included in “Purchases - related parties” primarily relate to services that support MPLX’s operations and maintenance activities, as well as compensation expenses. Charges for services included in “General and administrative expenses” primarily relate to services that support MPLX’s executive management, accounting and human resources activities. These charges were as follows:



(In millions)	2018		2017		2016
Rental cost of sales - related parties	$	2	$	1	$	1
Purchases - related parties	164		67		39
General and administrative expenses	68		37		45
Total	$	234	$	105	$	85

Also under terms of the omnibus and employee services agreements, some service costs related to engineering services are associated with assets under construction. These costs added to “Property, plant and equipment, net” were as follows:



(In millions)	2018		2017		2016
MPC	$	151	$	42	$	47

Summary of Allocated Related Party Employee Benefit Costs by Income Statement Line Item



(In millions)	2018		2017		2016
Rental cost of sales - related parties	$	3	$	1	$	—
Purchases - related parties	528		385		349
General and administrative expenses	109		101		100
Total	$	640	$	487	$	449

Schedule of Entity Wide Information Purchases from Related Parties

Purchases of products from MPC are classified as “Purchases - related parties.” These purchases include product purchases, payments made to MPC in its capacity as general contractor to MPLX, and certain rent and lease agreements. These purchases were as follows:



(In millions)	2018		2017		2016
MPC	$	168	$	3	$	—

Receivables from Related Parties

Receivables from related parties were as follows:



	December 31,
(In millions)	2018		2017
MPC	$	281	$	153
Other	8		7
Total	$	289	$	160

Schedule of Long Term Receivables with Related Parties

Long-term receivables with related parties, which includes straight-line rental income, were as follows:



	December 31,
(In millions)	2018		2017
MPC	$	24	$	20

Payables to Related Parties

Payables to related parties were as follows:



	December 31,
(In millions)	2018		2017
MPC⁽¹⁾	$	131	$	470
MarkWest Utica EMG	51		29
Ohio Gathering	5		8
Sherwood Midstream	16		8
Other	—		1
Total	$	203	$	516


(1)	Balance includes $386 million related to the MPC Loan Agreement as of December 31, 2017.

The “Deferred revenue-related parties” balance associated with the minimum volume deficiencies and project reimbursements were as follows:



	December 31,
(In millions)	2018		2017
Minimum volume deficiencies - MPC	$	44	$	53
Project reimbursements - MPC	50		33
Total	$	94	$	86