v3.26.1
Segment Information (Segment Adjusted EBITDA to Income (Loss) from Operations before Income Taxes) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]        
Refining & Renewable Diesel planned turnaround costs $ (276) $ (275) $ (807) $ (740)
Renewable Diesel JV planned turnaround costs [1] (1) (2) (30) (10)
Depreciation and amortization (838) (789) (1,647) (1,582)
Renewable Diesel JV depreciation and amortization (23) [1] (23) [1] (45) (45)
Clean fuel production tax credit [2] 0 0 (32) 0
Net interest and other financial costs (340) (319) (710) (623)
Income before income taxes 6,982 1,878 8,016 2,261
Renewable Diesel        
Segment Reporting [Line Items]        
Renewable Diesel JV depreciation and amortization (23) (23) (45) (45)
Operating Segments        
Segment Reporting [Line Items]        
Adjusted EBITDA 8,691 3,512 11,704 5,679
Depreciation and amortization (813) (772) (1,598) (1,547)
Operating Segments | Refining & Marketing        
Segment Reporting [Line Items]        
Adjusted EBITDA 6,655 1,890 8,032 2,379
Depreciation and amortization (410) (405) (797) (811)
Operating Segments | Midstream        
Segment Reporting [Line Items]        
Adjusted EBITDA 1,778 1,641 3,376 3,361
Depreciation and amortization (387) (349) (769) (700)
Operating Segments | Renewable Diesel        
Segment Reporting [Line Items]        
Adjusted EBITDA 258 (19) 296 (61)
Depreciation and amortization [3] (16) (18) (32) (36)
Corporate        
Segment Reporting [Line Items]        
Costs and expenses, excluding depreciation (231) (226) (481) (418)
Depreciation and amortization $ (25) $ (17) $ (49) $ (35)
[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.