Segment Information (Tables)

9 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

Segment information for our reportable segments

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

	Refining		Ethanol		Retail		Corporate			Total
Three months ended September 30, 2014:
Operating revenues from external customers	$	33,274	$	1,134	$	—	$	—		$	34,408
Intersegment revenues	—		21		—		—			21
Operating income (loss)	1,664		198		—		(192		)	1,670
Three months ended September 30, 2013:
Operating revenues from external customers	34,747		1,390		—		—			36,137
Intersegment revenues	—		16		—		—			16
Operating income (loss)	600		113		—		(181		)	532
Nine months ended September 30, 2014:
Operating revenues from external customers	99,183		3,802		—		—			102,985
Intersegment revenues	—		55		—		—			55
Operating income (loss)	4,023		628		—		(545		)	4,106
Nine months ended September 30, 2013:
Operating revenues from external customers	95,864		3,885		3,896		—			103,645
Intersegment revenues	2,876		86		—		—			2,962
Operating income (loss)	2,727		222		81		(635		)	2,395

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

	September 30, 2014		December 31, 2013
Refining	$	42,378	$	41,227
Ethanol	916		889
Corporate	5,161		5,144
Total assets	$	48,455	$	47,260