v3.26.1
Related Party Transactions (Tables)
3 Months Ended
Mar. 31, 2026
Related Party Transactions [Abstract]  
Related Party Transactions
Transactions with related parties were as follows:
Three Months Ended 
March 31,
(Millions of dollars)20262025
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.