Segment Information (Tables)

6 Months Ended

Jun. 30, 2012

Segment Reporting [Abstract]

Segment information for our reportable segments

The following table reflects activity related to continuing operations (in millions):

	Refining		Retail		Ethanol		Corporate			Total
Three months ended June 30, 2012:
Operating revenues from external   customers	$	30,488	$	3,062	$	1,112	$	—		$	34,662
Intersegment revenues	2,203		—		46		—			2,249
Operating income (loss)	1,364		172		5		(180		)	1,361
Three months ended June 30, 2011:
Operating revenues from external   customers	26,921		3,128		1,244		—			31,293
Intersegment revenues	2,311		—		52		—			2,363
Operating income (loss)	1,253		135		64		(162		)	1,290
Six months ended June 30, 2012:
Operating revenues from external   customers	61,638		5,997		2,194		—			69,829
Intersegment revenues	4,458		—		60		—			4,518
Operating income (loss)	1,245		212		14		(354		)	1,117
Six months ended June 30, 2011:
Operating revenues from external   customers	49,483		5,812		2,306		—			57,601
Intersegment revenues	4,308		—		100		—			4,408
Operating income (loss)	1,529		201		108		(304		)	1,534

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

	June 30, 2012		December 31, 2011
Refining	$	36,602	$	38,164
Retail	1,973		1,999
Ethanol	926		943
Corporate	1,687		1,677
Total assets	$	41,188	$	42,783