v3.26.1
Segment Information (Segment Adjusted EBITDA to Income (Loss) from Operations before Income Taxes) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment Reporting Information [Line Items]    
Refining & Renewable Diesel planned turnaround costs $ (531) $ (465)
Renewable Diesel JV planned turnaround costs [1] (29) (8)
Depreciation and amortization (809) (793)
Renewable Diesel JV depreciation and amortization [1] (22) (22)
Clean fuel production tax credit [2] (32) 0
Net interest and other financial costs (370) (304)
Income before income taxes 1,034 383
Renewable Diesel    
Segment Reporting Information [Line Items]    
Renewable Diesel JV depreciation and amortization (22) (22)
Operating Segments    
Segment Reporting Information [Line Items]    
Adjusted EBITDA 3,013 2,167
Depreciation and amortization (785) (775)
Operating Segments | Refining & Marketing    
Segment Reporting Information [Line Items]    
Adjusted EBITDA 1,377 489
Depreciation and amortization (387) (406)
Operating Segments | Midstream    
Segment Reporting Information [Line Items]    
Adjusted EBITDA 1,598 1,720
Depreciation and amortization (382) (351)
Operating Segments | Renewable Diesel    
Segment Reporting Information [Line Items]    
Adjusted EBITDA 38 (42)
Depreciation and amortization [3] (16) (18)
Corporate    
Segment Reporting Information [Line Items]    
Costs and expenses, excluding depreciation (250) (192)
Depreciation and amortization $ (24) $ (18)
[1] Represents MPC’s pro-rata share of expenses from joint ventures included in the Renewable Diesel segment.
[2] Recognition of 2025 clean fuel production tax credits as a result of proposed regulatory guidance issued in February 2026, which clarified the qualification criteria for 45Z credits.
[3] Excludes our pro-rata share of Renewable Diesel JV depreciation and amortization, which was adjusted for purposes of arriving at Renewable Diesel segment adjusted EBITDA.