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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

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