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Acquisitions and Dispositions (Schedule of Unaudited Pro Forma Information) (Detail) - SCANA - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2019
Business Acquisition [Line Items] |  |  |
Operating Revenue | [1] | $ 3,782 | $ 11,513
Net income attributable to Dominion Energy | [1] | $ 1,029 | $ 1,991
Earnings Per Common Share – Basic | [1] | $ 1.28 | $ 2.47
Earnings Per Common Share – Diluted | [1] | $ 1.26 | $ 2.44
[1] | Amounts include adjustments for non-recurring costs directly related to the SCANA Combination.

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