Related-Party Transactions (Tables)

12 Months Ended

Dec. 31, 2019

Related party transactions with affiliates for the years ended December 31, 2019, 2018, and 2017 were as follows (in millions):



	Year Ended December 31,
	2019		2018		2017
Motor fuel sales to affiliates	$	7	$	33	$	55
Bulk fuel purchases from affiliates	$	821	$	1,947	$	2,416

Included in the bulk fuel purchases above are purchases from PES, which constituted 8.3% and 19.6% of our total cost of sales for the years ended December 31, 2018 and 2017, respectively.