Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Consolidated Statements of Income
Operating revenues (a)	$ 139,250	$ 125,987	$ 82,233
Costs and expenses:
Cost of sales	127,268	115,719	74,458
Operating expenses:
Refining	3,668	3,406	2,944
Retail	686	678	654
Ethanol	332	399	363
General and administrative expenses	698	571	531
Depreciation and amortization expense	1,574	1,534	1,405
Asset impairment losses	1,014	0	2
Total costs and expenses	135,240	122,307	80,357
Operating income	4,010	3,680	1,876
Other income, net	9	43	106
Interest and debt expense, net of capitalized interest	(313)	(401)	(484)
Income from continuing operations before income tax expense	3,706	3,322	1,498
Income tax expense	1,626	1,226	575
Income from continuing operations	2,080	2,096	923
Loss from discontinued operations, net of income taxes	0	(7)	(599)
Net income	2,080	2,089	324
Less: Net loss attributable to noncontrolling interest	(3)	(1)	0
Net income attributable to Valero Energy Corporation stockholders	2,083	2,090	324
Net income attributable to Valero Energy Corporation stockholders:
Continuing operations	2,083	2,097	923
Discontinued operations	0	(7)	(599)
Net income attributable to Valero Energy Corporation stockholders	2,083	2,090	324
Earnings per common share:
Continuing operations	$ 3.77	$ 3.70	$ 1.63
Discontinued operations	$ 0.00	$ (0.01)	$ (1.06)
Total	$ 3.77	$ 3.69	$ 0.57
Weighted-average common shares outstanding (in millions)	550	563	563
Earnings per common share – assuming dilution:
Continuing operations	$ 3.75	$ 3.69	$ 1.62
Discontinued operations	$ 0.00	$ (0.01)	$ (1.05)
Total	$ 3.75	$ 3.68	$ 0.57
Weighted-average common shares outstanding – assuming dilution (in millions)	556	569	568
Dividends per common share	$ 0.65	$ 0.30	$ 0.20
Supplemental information:
(a) Includes excise taxes on sales by our U.S. retail system	$ 964	$ 892	$ 891