v3.26.3
Segment Information (Segment Adjusted EBITDA to Income (Loss) from Operations before Income Taxes) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting [Line Items]        
Refining & Renewable Diesel planned turnaround costs $ (295) $ (401) $ (1,102) $ (1,141)
Renewable Diesel JV planned turnaround costs [1] (2) (3) (32) (13)
Gain on sale of assets [2] 0 738 0 738
SRE 0 57 0 57
Transaction-related costs [3] 0 (21) 0 (21)
Clean fuel production tax credit [4] 0 0 (32) 0
Tax and legal settlements [5] 123 0 123 0
Depreciation and amortization (836) (841) (2,483) (2,423)
Renewable Diesel JV depreciation and amortization (23) [1] (22) [1] (68) (67)
Net interest and other financial costs (287) (310) (997) (933)
Income before income taxes 10,163 2,403 18,179 4,664
Renewable Diesel        
Segment Reporting [Line Items]        
Renewable Diesel JV depreciation and amortization (23) (22) (68) (67)
Operating Segments        
Segment Reporting [Line Items]        
Adjusted EBITDA 12,031 3,415 23,735 9,094
Depreciation and amortization (810) (812) (2,408) (2,359)
Operating Segments | Refining & Marketing        
Segment Reporting [Line Items]        
Adjusted EBITDA 9,895 1,762 17,927 4,141
Depreciation and amortization (397) (426) (1,194) (1,237)
Operating Segments | Midstream        
Segment Reporting [Line Items]        
Adjusted EBITDA 1,882 1,709 5,258 5,070
Depreciation and amortization (397) (369) (1,166) (1,069)
Operating Segments | Renewable Diesel        
Segment Reporting [Line Items]        
Adjusted EBITDA 254 (56) 550 (117)
Depreciation and amortization [6] (16) (17) (48) (53)
Corporate        
Segment Reporting [Line Items]        
Costs and expenses, excluding depreciation (302) (209) (783) (627)
Depreciation and amortization $ (26) $ (29) $ (75) $ (64)
[1] Represents MPC’s pro-rata share of expenses from joint ventures included in the Renewable Diesel segment.
[2] The three and nine months ended September 30, 2025 include gains from the BANGL Acquisition and the sale of MPC’s interest in TAMH.
[3] Transaction-related costs include costs associated with significant transactions discussed in Note 5.
[4] 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.
[5] Includes adjustments for a tax matter dispute with the City of Carson relating to municipal taxes covering multiple prior year periods as well as legal settlements arising from a single event in a prior year.
[6] 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.