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Earnings Per Common Share (Tables) | 3 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Schedule of earnings per common share, basic and diluted | Earnings per common share were computed as follows (dollars and shares in millions, except per share amounts):
| Three Months Ended March 31,
| 2019 |  | 2018
Earnings per common share: |  |  |
Net income attributable to Valero stockholders | $ | 141 |  |  | $ | 469 |
Less income allocated to participating securities | 1 |  |  | 1 |
Net income available to common stockholders | $ | 140 |  |  | $ | 468 |
Weighted-average common shares outstanding | 416 |  |  | 431 |
Earnings per common share | $ | 0.34 |  |  | $ | 1.09 |
Earnings per common share – assuming dilution: |  |  |
Net income attributable to Valero stockholders | $ | 141 |  |  | $ | 469 |
Weighted-average common shares outstanding | 416 |  |  | 431 |
Effect of dilutive securities | 2 |  |  | 1 |
Weighted-average common shares outstanding – assuming dilution | 418 |  |  | 432 |
Earnings per common share – assuming dilution | $ | 0.34 |  |  | $ | 1.09 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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