Inventories (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consisted of the following (in millions):

	June 30, 2018		December 31, 2017
Refinery feedstocks	$	2,213	$	2,427
Refined petroleum products and blendstocks	3,717		3,459
Ethanol feedstocks and products	231		242
Materials and supplies	259		256
Inventories	$	6,420	$	6,384