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Segment Information
 12 Months Ended
Dec. 31, 2022
Segment Reporting [Abstract]  
Segment Information Segment Information
We have two reportable segments: Refining & Marketing and Midstream. Each of these segments is organized and managed based upon the nature of the products and services it offers.
•Refining & Marketing – refines crude oil and other feedstocks, including renewable feedstocks, at our refineries in the Gulf Coast, Mid-Continent and West Coast regions of the United States, purchases refined products and ethanol for resale and distributes refined products, including renewable diesel, through transportation, storage, distribution and marketing services provided largely by our Midstream segment. We sell refined products to wholesale marketing customers domestically and internationally, to buyers on the spot market, to independent entrepreneurs who operate primarily Marathon® branded outlets and through long-term fuel supply contracts with direct dealers who operate locations mainly under the ARCO® brand.
•Midstream – transports, stores, distributes and markets crude oil and refined products principally for the Refining & Marketing segment via refining logistics assets, pipelines, terminals, towboats and barges; gathers, processes and transports natural gas; and gathers, transports, fractionates, stores and markets NGLs. The Midstream segment primarily reflects the results of MPLX.
During the first quarter of 2022, our chief operating decision maker (“CODM”) began to evaluate the performance of our segments using segment adjusted EBITDA. We have modified our presentation of segment performance to be consistent with this change, including prior periods presented for consistent and comparable presentation. Amounts included in income (loss) from continuing operations before income taxes and excluded from adjusted EBITDA include: (i) depreciation and amortization; (ii) net interest and other financial costs; (iii) turnaround expenses and (iv) other adjustments as deemed necessary. These items are either: (i) believed to be non-recurring in nature; (ii) not believed to be allocable or controlled by the segment; or (iii) not tied to the operational performance of the segment. Assets by segment are not a measure used to assess the performance of the company by the CODM and thus are not reported in our disclosures.

(Millions of dollars)202220212020
Segment adjusted EBITDA for reportable segments
Refining & Marketing19,261 $3,518 $(1,939)
Midstream5,772 5,410 5,061 
Total reportable segments$25,033 $8,928 $3,122 
Reconciliation of segment adjusted EBITDA for reportable segments to income (loss) from continuing operations before income taxes
Total reportable segments$25,033 $8,928 $3,122 
Corporate(698)(587)(635)
Refining planned turnaround costs(1,122)(582)(832)
Storm impacts— (70)— 
LIFO inventory (charge) credit 148 — (561)
Gain on sale of assets(a)
1,058 — 66 
Renewable volume obligation requirements(b)
238 — — 
Litigation27 — 84 
Impairments(c)
— (13)(9,741)
Idling facility expenses— (12)— 
Restructuring expenses(d)
— — (367)
Transaction related costs(e)
— — (8)
Depreciation and amortization(3,215)(3,364)(3,375)
Net interest and other financial costs(1,000)(1,483)(1,365)
Income (loss) from continuing operations before income taxes$20,469 $2,817 $(13,612)
(a)2022 includes the non-cash gain related to the contribution of assets by MPC on the formation of the Martinez Renewables joint venture and the non-cash gain on lease reclassification. See Note 16 and 28 for additional information.
(b)Represents retroactive changes in renewable volume obligation requirements published by the EPA in June 2022 for the 2020 and 2021 annual obligations.
(c)2021 reflects impairments of equity method investments. 2020 reflects impairments of goodwill, equity method investments and long lived assets. See Note 7.
(d)See Note 19.
(e)2020 includes costs incurred in connection with the Midstream strategic review and other related efforts. Costs incurred in connection with the Speedway separation are included in discontinued operations. See Note 5.
(Millions of dollars)202220212020
Sales and other operating revenues
Refining & Marketing
Revenues from external customers(a)
$172,087 $115,350 $66,180 
Intersegment revenues118 144 67 
Refining & Marketing segment revenues172,205 115,494 66,247 
Midstream
Revenues from external customers(a)
5,366 4,633 3,599 
Intersegment revenues5,224 4,986 4,839 
Midstream segment revenues10,590 9,619 8,438 
Total segment revenues182,795 125,113 74,685 
Less: intersegment revenues5,342 5,130 4,906 
Consolidated sales and other operating revenues$177,453 $119,983 $69,779 
(a)Includes Refining & Marketing intercompany sales to Speedway prior to May 14, 2021 and related party sales. See Notes 5 and 9 for additional information.

(Millions of dollars)202220212020
Income (loss) from equity method investments
Refining & Marketing$31 $59 $2 
Midstream624 412 378 
Corporate(a)
— (13)(1,315)
Consolidated income (loss) from equity method investments$655 $458 $(935)
Depreciation and amortization
Refining & Marketing$1,850 $1,870 $1,857 
Midstream1,310 1,329 1,353 
Corporate(b)
55 165 165 
Consolidated depreciation and amortization$3,215 $3,364 $3,375 
Capital expenditures
Refining & Marketing$1,508 $911 $1,170 
Midstream1,069 731 1,398 
Segment capital expenditures and investments2,577 1,642 2,568 
Less investments in equity method investees405 210 485 
Plus:
Corporate108 105 80 
Capitalized interest103 68 106 
Consolidated capital expenditures(c)
$2,383 $1,605 $2,269 
(a)    Impairment of equity method investment. See Note 7.
(b)    2021 includes an impairment of $56 million. See Note 7.
(c)    Includes changes in capital expenditure accruals. See Note 24 for a reconciliation of total capital expenditures to additions to property, plant and equipment as reported in the consolidated statements of cash flows.
Since we will continue to supply fuel to Speedway subsequent to the sale to 7-Eleven, we have reported intersegment sales to Speedway, that were previously eliminated in consolidation, as third-party sales. All periods presented have been retrospectively adjusted through the sale date of May 14, 2021 to reflect this change. Sales to Speedway/7-Eleven from the Refining & Marketing segment represented 10 percent, 11 percent and 11 percent of our total annual revenues for the years ended December 31, 2022, 2021 and 2020, respectively. See Note 23 for the disaggregation of our revenue by segment and product line.
We do not have significant operations in foreign countries. Therefore, revenues in foreign countries and long-lived assets located in foreign countries, including property, plant and equipment and investments, are not material to our operations.