Related Party Agreements and Transactions (Tables)

3 Months Ended

Mar. 31, 2020

Related Party Transactions [Abstract]

Other Long-term Debt, Noncurrent

Activity on the MPC Loan Agreement was as follows:

(In millions)	Three Months Ended March 31, 2020			Year Ended December 31, 2019
Borrowings	$	1,667		$	8,540
Average interest rate of borrowings	2.833		%	3.441		%
Repayments	$	2,261		$	7,946
Outstanding balance at end of period(1)	$	—		$	594

(1) Included in “Current liabilities - related parties” on the Consolidated Balance Sheets.

Prior to the Merger, ANDX was also party to a loan agreement with MPC (“ANDX-MPC Loan Agreement”). This facility was entered into on December 21, 2018, with a borrowing capacity of $500 million. In connection with the Merger, on July 31, 2019, MPLX repaid the entire outstanding balance and terminated the ANDX-MPC Loan Agreement. Activity on the ANDX-MPC Loan Agreement prior to the Merger was as follows:

(In millions)	Year Ended December 31, 2019
Borrowings	$	773
Average interest rate of borrowings	4.249		%
Repayments	$	773
Outstanding balance at end of period	$	—

Schedule of Sales to Related Parties

Revenue received from related parties included on the Consolidated Statements of Income was as follows:

	Three Months Ended March 31,
(In millions)	2020		2019
Service revenues - related parties
MPC	$	927	$	803
Other	1		—
Total Service revenue - related parties	928		803
Rental income - related parties
MPC	234		325
Product sales - related parties(1)
MPC	33		41
Other income - related parties
MPC	48		10
Other	16		16
Total Other income - related parties	$	64	$	26

(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 the three months ended March 31, 2020, these sales totaled $173 million. For the three months ended March 31, 2019, these sales totaled $223 million.

Schedule of Employee Services Expenses from Related Parties

Expenses incurred from MPC under the omnibus and employee services agreements as well as other purchases from MPC included on the Consolidated Statements of Income are as follows:

	Three Months Ended March 31,
(In millions)	2020		2019
Rental cost of sales - related parties
MPC	$	46	$	43
Purchases - related parties
MPC	271		273
Other	5		5
Total Purchase - related parties	276		278
General and administrative expenses
MPC	$	64	$	62

Schedule of Related Party Transactions [Table Text Block]

(In millions)	March 31, 2020		December 31, 2019
Current assets - related parties
Receivables - MPC	$	538	$	621
Receivables - Other	21		22
Prepaid - MPC	15		9
Lease Receivables - MPC	26		4
Total	600		656
Noncurrent assets - related parties
Long-term receivables - MPC	28		21
Right of use assets - MPC	231		232
Long-term lease receivables - MPC	399		43
Unguaranteed residual asset - MPC	19		7
Total	677		303
Current liabilities - related parties
Payables - MPC	227		911
Payables - Other	16		37
Operating lease liabilities - MPC	1		1
Deferred revenue - Minimum volume deficiencies - MPC	38		42
Deferred revenue - Project reimbursements - MPC	14		16
Deferred revenue - Project reimbursements - Other	1		1
Total	297		1,008
Long-term liabilities - related parties
Long-term operating lease liabilities - MPC	230		230
Long-term deferred revenue - Project reimbursements - MPC	54		53
Long-term deferred revenue - Project reimbursements - Other	6		7
Total	$	290	$	290