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v3.26.1

Related Party Transactions | 3 Months Ended
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Mar. 31, 2026
Related Party Transactions [Abstract] |
Related Party Transactions | Related Party Transactions Transactions with related parties were as follows:
| Three Months Ended March 31, |  |
(Millions of dollars) | 2026 |  | 2025 |  |  |  |
Sales to related parties | $ | 238 |  |  | $ | 320 |  |  |  |  |
Purchases from related parties(a) | 471 |  |  | 705 |  |  |  |  |
(a) The 2025 period includes purchases of ethanol from TAMH, an equity affiliate, through July 2025. MPC sold its interest in TAMH on July 31, 2025. TAMH ceased to be a related party after the sale. See Note 4. Sales to related parties, which are included in sales and other operating revenues, consist primarily of refined product sales and renewable feedstock sales to certain of our equity affiliates. Purchases from related parties are included in cost of revenues. We obtain utilities, transportation services and purchase renewable diesel from certain of our equity affiliates.

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