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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2017
Earnings Per Share [Abstract] |
Earnings Per Share Computation | The following table presents the calculation of Dominion’s basic and diluted EPS:
| Three Months Ended March 31,
| 2017 | 2016
(millions, except EPS) |
Net income attributable to Dominion | $ | 632 |  | $ | 524 |
Average shares of common stock outstanding – Basic | 628.1 |  | 596.6 |
Net effect of dilutive securities(1) | — |  | 1.6 |
Average shares of common stock outstanding – Diluted | 628.1 |  | 598.2 |
Earnings Per Common Share – Basic | $ | 1.01 |  | $ | 0.88 |
Earnings Per Common Share – Diluted | $ | 1.01 |  | $ | 0.88 |
(1) | Dilutive securities consist primarily of the 2013 Equity Units for the three months ended March 31, 2016. See Note 17 to the Consolidated Financial Statements in the Companies' Annual Report on Form 10-K for the year ended December 31, 2016 for more information.

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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://www.xbrl.org/2003/role/presentationRef -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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