Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consisted of the following (in millions):

	March 31, 2018		December 31, 2017
Refinery feedstocks	$	2,471	$	2,427
Refined petroleum products and blendstocks	3,569		3,459
Ethanol feedstocks and products	258		242
Materials and supplies	257		256
Inventories	$	6,555	$	6,384