Equity Method Investments (Tables)

12 Months Ended

Dec. 31, 2024

Equity Method Investments and Joint Ventures [Abstract]

Schedule Of Equity Method Investments

		Ownership as of	Carrying value at
		December 31,	December 31,
(In millions of dollars, except ownership percentages)	VIE	2024	2024		2023
Refining & Marketing
The Andersons Marathon Holdings LLC		50%	$	190	$	227
Other(a)	X		92		75
Refining & Marketing Total			$	282	$	302
Midstream
MPLX
BANGL		45%	$	281	$	63
Illinois Extension Pipeline Company, L.L.C.		35%	218		228
LOOP LLC		41%	310		314
MarEn Bakken Company LLC		25%	526		449
MarkWest EMG Jefferson Dry Gas Gathering Company, L.L.C.	X	67%	329		336
MarkWest Utica EMG, L.L.C.	X	59%	742		676
Ohio Gathering Co, LLC	X	35%	470		—
Sherwood Midstream LLC	X	50%	488		500
WPC Parent, LLC		30%	208		214
Other(a)	X		959		963
MPLX Total			$	4,531	$	3,743
MPC-Retained
Capline Pipeline Company LLC		33%	$	382	$	402
Gray Oak Pipeline, LLC		25%	274		284
Other(a)	X		114		170
MPC-Retained Total			$	770	$	856
Midstream Total			$	5,301	$	4,599
Renewable Diesel
Martinez Renewables LLC	X	50%	$	1,184	$	1,266
Other(a)	X		90		93
Renewable Diesel Total			$	1,274	$	1,359
Total			$	6,857	$	6,260

(a)    Some investments included within “Other” have been deemed to be VIEs.

Investment Company, Nonconsolidated Subsidiary, Summarized Financial Information

Summarized financial information for all equity method investments in affiliated companies, combined, was as follows:

(Millions of dollars)	2024		2023		2022
Income statement data:
Revenues and other income	$	9,259	$	6,544	$	5,069
Income from operations	2,698		2,428		1,907
Net income	2,211		2,089		1,740
Balance sheet data – December 31:
Current assets	$	2,687	$	2,610
Noncurrent assets	24,656		21,098
Current liabilities	1,927		1,569
Noncurrent liabilities	7,837		6,719