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Debt (Tables)

9 Months Ended

Sep. 30, 2024

Debt Disclosure [Abstract]

Outstanding Borrowings

Our outstanding borrowings at September 30, 2024 and December 31, 2023 consisted of the following:

(Millions of dollars)			September 30, 2024						December 31, 2023
Marathon Petroleum Corporation:
Senior notes			$	5,699					$	6,449
Notes payable			—						1
Finance lease obligations			494						464
Total			6,193						6,914
MPLX LP:
Senior notes			22,350						20,700
Finance lease obligations			6						6
Total			22,356						20,706
Total debt			28,549						27,620
Unamortized debt issuance costs			(146)						(141)
Unamortized discount, net of unamortized premium			(183)						(196)
Amounts due within one year			(4,167)						(1,954)
Total long-term debt due after one year			$	24,053					$	25,329

Schedule of Line of Credit Facilities

Available Capacity under our Credit Facilities as of September 30, 2024

(Millions of dollars)						Total Capacity						Outstanding Borrowings						Outstanding Letters of Credit						Available Capacity						Weighted Average Interest Rate						Expiration
MPC, excluding MPLX
MPC bank revolving credit facility						$	5,000					$	—					$	1					$	4,999					—		%				July 2027
MPC trade receivables securitization facility(a)						100						—						—						100						—		%				September 2027
MPLX
MPLX bank revolving credit facility						2,000						—						—						2,000						—		%				July 2027

(a)    The committed borrowing and letter of credit issuance capacity under the trade receivables securitization facility is $100 million. In addition, the facility allows for the issuance of letters of credit in excess of the committed capacity at the discretion of the issuing banks.

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Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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