Segment Information (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Segment activity, including total assets by reportable segment

The following table reflects activity related to our reportable segments (in millions):

	Refining		Ethanol		VLP		Corporate and Eliminations			Total
Year ended December 31, 2017:
Operating revenues:
Operating revenues from external customers	$	90,651	$	3,324	$	—	$	5		$	93,980
Intersegment revenues	6		176		452		(634		)	—
Total operating revenues	90,657		3,500		452		(629		)	93,980
Cost of sales:
Cost of materials and other	80,865		2,804		—		(632		)	83,037
Operating expenses (excluding depreciation and amortization expense reflected below)	3,917		443		104		(2		)	4,462
Depreciation and amortization expense	1,800		81		53		—			1,934
Total cost of sales	86,582		3,328		157		(634		)	89,433
Other operating expenses	58		—		3		—			61
General and administrative expenses (excluding depreciation and amortization expense reflected below)	—		—		—		835			835
Depreciation and amortization expense	—		—		—		52			52
Operating income by segment	$	4,017	$	172	$	292	$	(882	)	$	3,599
Total expenditures for long-lived assets	$	1,710	$	84	$	110	$	44		$	1,948

Year ended December 31, 2016:
Operating revenues:
Operating revenues from external customers	$	71,968		$	3,691		$	—	$	—		$	75,659
Intersegment revenues	—			210			363		(573		)	—
Total operating revenues	71,968			3,901			363		(573		)	75,659
Cost of sales:
Cost of materials and other	63,405			3,130			—		(573		)	65,962
Operating expenses (excluding depreciation and amortization expense reflected below)	3,696			415			96		—			4,207
Depreciation and amortization expense	1,734			66			46		—			1,846
Lower of cost or market inventory valuation adjustment	(697		)	(50		)	—		—			(747		)
Total cost of sales	68,138			3,561			142		(573		)	71,268
General and administrative expenses (excluding depreciation and amortization expense reflected below)	—			—			—		715			715
Depreciation and amortization expense	—			—			—		48			48
Asset impairment loss	56			—			—		—			56
Operating income by segment	$	3,774		$	340		$	221	$	(763	)	$	3,572
Total expenditures for long-lived assets	$	1,867		$	68		$	23	$	38		$	1,996

	Refining		Ethanol		VLP		Corporate and Eliminations			Total
Year Ended December 31, 2015:
Operating revenues:
Operating revenues from external customers	$	84,521	$	3,283	$	—	$	—		$	87,804
Intersegment revenues	—		151		244		(395		)	—
Total operating revenues	84,521		3,434		244		(395		)	87,804
Cost of sales:
Cost of materials and other	71,512		2,744		—		(395		)	73,861
Operating expenses (excluding depreciation and amortization expense reflected below)	3,689		448		106		—			4,243
Depreciation and amortization expense	1,699		50		46		—			1,795
Lower of cost or market inventory valuation adjustment	740		50		—		—			790
Total cost of sales	77,640		3,292		152		(395		)	80,689
General and administrative expenses (excluding depreciation and amortization expense reflected below)	—		—		—		710			710
Depreciation and amortization expense	—		—		—		47			47
Operating income by segment	$	6,881	$	142	$	92	$	(757	)	$	6,358
Total expenditures for long-lived assets	$	2,216	$	67	$	38	$	29		$	2,350

Total assets by reportable segment were as follows (in millions):

	December 31,
	2017		2016
Refining	$	40,382	$	38,095
Ethanol	1,344		1,316
VLP	1,517		979
Corporate and eliminations	6,915		5,783
Total assets	$	50,158	$	46,173

Operating revenues from external customers by product

Operating revenues from external customers by reportable segment for our principal products were as follows (in millions):

	Year Ended December 31,
	2017		2016		2015
Refining:
Gasolines and blendstocks	$	40,362	$	33,450	$	38,983
Distillates	42,074		32,576		38,093
Other product revenues	8,215		5,942		7,445
Total refining revenues	90,651		71,968		84,521
Ethanol:
Ethanol	2,764		3,105		2,628
Distillers grains	560		586		655
Total ethanol revenues	3,324		3,691		3,283
Corporate – other revenues	5		—		—
Total revenues from external customers	$	93,980	$	75,659	$	87,804

Operating revenues by geographic area of customer

Operating revenues by geographic area are shown in the following table (in millions). The geographic area is based on location of customer and no customer accounted for 10 percent or more of our operating revenues.

	Year Ended December 31,
	2017		2016		2015
U.S.	$	66,614	$	51,479	$	60,319
Canada	7,039		6,115		6,841
U.K. and Ireland	11,556		10,797		11,232
Other countries	8,771		7,268		9,412
Total operating revenues	$	93,980	$	75,659	$	87,804

Geographic information by country for long-lived assets

Long-lived assets by geographic area consisted of the following (in millions):

	December 31,
	2017		2016
U.S.	$	26,083	$	25,359
Canada	1,915		1,816
U.K. and Ireland	1,063		967
Total long-lived assets	$	29,061	$	28,142