Segment Information (Tables)

6 Months Ended

Jun. 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 June 30, 2014:
Operating revenues from external customers	$	33,457	$	1,457	$	—	$	—		$	34,914
Intersegment revenues	—		9		—		—			9
Operating income (loss)	1,079		187		—		(181		)	1,085
Three months ended June 30, 2013:
Operating revenues from external customers	31,564		1,491		979		—			34,034
Intersegment revenues	671		15		—		—			686
Operating income (loss)	918		95		39		(247		)	805
Six months ended June 30, 2014:
Operating revenues from external customers	65,909		2,668		—		—			68,577
Intersegment revenues	—		34		—		—			34
Operating income (loss)	2,359		430		—		(353		)	2,436
Six months ended June 30, 2013:
Operating revenues from external customers	61,117		2,495		3,896		—			67,508
Intersegment revenues	2,876		70		—		—			2,946
Operating income (loss)	2,127		109		81		(454		)	1,863

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

	June 30, 2014		December 31, 2013
Refining	$	41,326	$	40,834
Ethanol	937		889
Corporate	4,750		5,537
Total assets	$	47,013	$	47,260