Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Consolidated Statements of Income
Operating revenues (a)	$ 33,474	$ 35,167
Costs and expenses:
Cost of sales	30,685	33,035
Operating expenses:
Refining	876	964
Retail	169	166
Ethanol	77	87
General and administrative expenses	176	164
Depreciation and amortization expense	430	384
Asset impairment losses	0	611
Total costs and expenses	32,413	35,411
Operating income (loss)	1,061	(244)
Other income, net	14	6
Interest and debt expense, net of capitalized interest	(83)	(99)
Income (loss) before income tax expense	992	(337)
Income tax expense	340	95
Net income (loss)	652	(432)
Less: Net loss attributable to noncontrolling interests	(2)	0
Net income (loss) attributable to Valero Energy Corporation stockholders	654	(432)
Earnings per common share	$ 1.18	$ (0.78)
Weighted-average common shares outstanding (in millions)	550	551
Earnings per common share – assuming dilution	$ 1.18	$ (0.78)
Weighted-average common shares outstanding - assuming dilution (in millions)	556	551
Dividends per common share	$ 0.20	$ 0.15
Supplemental Information
(a) Includes excise taxes on sales by our U.S. retail system	$ 236	$ 234