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Related Party Transactions
 12 Months Ended
Dec. 31, 2024
Related Party Transactions [Abstract]  
Related Party Transactions Related Party Transactions
Our related party transactions consist primarily of transactions with our equity method investees (See Note 8). Transactions with our related parties were as follows for the periods presented (in millions):
Year Ended December 31,
202420232022
Revenues (1)
$121.7 $105.2 $98.7 
Cost of materials and other (2)
$200.9 $197.5 $117.4 
(1)Consists primarily of asphalt sales which are recorded in the refining segment.
(2)Consists primarily of pipeline throughput fees paid by the refining segment and asphalt purchases.