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Related Party Transactions
 12 Months Ended
Dec. 31, 2019
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 7). Transactions with our related parties were as follows for the periods presented:
 
Year Ended December 31,
(in millions)
2019
 
2018
 
2017
Revenues (1)
$
86.0

 
$
33.7

 
$
50.5

Cost of materials and other (2)
$
44.9

 
$
21.4

 
$
26.3

(1) 
Consists primarily of asphalt sales which are recorded in corporate, other and eliminations segment.
(2) 
Consists primarily of pipeline throughput fees paid by the refining segment and asphalt purchases.