Consolidated Statements of Equity and Series A Preferred Units (Consolidated Statements of Equity) - USD ($) $ in Millions	Total	Common Unit-holders Public	Common Unit-holder MPC	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interests
Beginning Balance at Dec. 31, 2023	$ 12,689	$ 8,700	$ 3,758	$ (4)	$ 235
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,005	355	640	0	10
Unit repurchases	(75)	(75)	0	0	0
Conversion of Series A preferred units	321	321	0	0	0
Distributions	(864)	(303)	(550)	0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders					(11)
Contributions	10	0	10	0	0
Other	0	(1)	0	1	0
Ending Balance at Mar. 31, 2024	13,086	8,997	3,858	(3)	234
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,181	425	746	0	10
Unit repurchases	(75)	(75)	0	0	0
Conversion of Series A preferred units	354	354	0	0	0
Distributions	(875)	(314)	(550)	0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders					(11)
Contributions	8	0	8	0	0
Other	5	5	0	0	0
Ending Balance at Jun. 30, 2024	13,684	9,392	4,062	(3)	233
Beginning Balance at Dec. 31, 2024	13,807	9,322	4,257	(3)	231
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,136	410	716	0	10
Unit repurchases	(100)	(100)	0	0	0
Conversion of Series A preferred units	197	197	0	0	0
Distributions	(983)	(353)	(619)	0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders					(11)
Contributions	7	0	7	0	0
Other	4	(4)	0	8	0
Ending Balance at Mar. 31, 2025	14,068	9,472	4,361	5	230
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,058	384	664	0	10
Unit repurchases	(100)	(100)	0	0	0
Distributions	(987)	(357)	(619)	0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders					(11)
Contributions	7	0	7	0	0
Other	3	3	0	0	0
Ending Balance at Jun. 30, 2025	$ 14,049	$ 9,402	$ 4,413	$ 5	$ 229

MPLX LP 10-Q