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Preferred Stock	12 Months Ended
Preferred Stock	Dec. 31, 2018
Equity [Abstract]
Preferred Stock	NOTE 18. PREFERRED STOCK Dominion Energy is authorized to issue up to 20 million shares of preferred stock; however, none were issued and outstanding at December 31, 2018 or 2017. Virginia Power is authorized to issue up to 10 million shares of preferred stock, $100 liquidation preference; however, none were issued and outstanding at December 31, 2018 or 2017.