Credit Risk	3 Months Ended
Mar. 31, 2020
Risks And Uncertainties [Abstract]
Credit Risk	Note 18. Credit Risk The Companies’ accounting policies for credit risk are discussed in Note 24 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2019. At March 31, 2020, Dominion Energy’s gross credit exposure related to energy marketing and price risk management activities totaled $172 million. Of this amount, investment grade counterparties, including those internally rated, represented 95%. No single counterparty, whether investment grade or non-investment grade, exceeded $55 million of exposure. At March 31, 2020, Virginia Power’s exposure related to wholesale customers totaled $65 million. Of this amount, investment grade counterparties, including those internally rated, represented 100%. No single counterparty, whether investment grade or non-investment grade, exceeded $55 million of exposure. At March 31, 2020, Dominion Energy Gas’ exposure primarily related to wholesale customers totaled $45 million. Of this amount, investment grade counterparties, including those internally rated, represented 92%. No single counterparty, whether investment grade or non-investment grade, exceeded $12 million of exposure. For the three months ended March 31, 2020 and 2019, the Export Customers comprised approximately 33% and 32%, respectively, of Dominion Energy Gas’ total operating revenue, with Dominion Energy Gas’ largest customer representing approximately 17% of such amount during both periods. Credit-Related Contingent Provisions The majority of Dominion Energy’s derivative instruments contain credit-related contingent provisions. These provisions require Dominion Energy to provide collateral upon the occurrence of specific events, primarily a credit rating downgrade. If the credit-related contingent features underlying these instruments that are in a liability position and not fully collateralized with cash were fully triggered as of March 31, 2020 and December 31, 2019, Dominion Energy would have been required to post $14 million and $10 million, respectively, of additional collateral to its counterparties. The collateral that would be required to be posted includes the impacts of any offsetting asset positions and any amounts already posted for derivatives, non-derivative contracts and derivatives elected under the normal purchases and normal sales exception, per contractual terms. Dominion Energy had posted $4 million of collateral at March 31, 2020 related to derivatives with credit-related contingent provisions that are in a liability position and not fully collateralized with cash and had posted no collateral at December 31, 2019. The aggregate fair value of all derivative instruments with credit-related contingent provisions that are in a liability position and not fully collateralized with cash was $18 million and $10 million at March 31, 2020 and December 31, 2019, respectively, which does not include the impact of any offsetting asset positions. If the credit-related contingent features underlying these instruments that are in a liability position and not fully collateralized with cash were fully triggered as of March 31, 2020 and December 31, 2019, Virginia Power would have been required to post an additional $2 million and $8 million, respectively, of collateral to its counterparties. Credit-related contingent provisions for Dominion Energy Gas were not material as of March 31, 2020 and December 31, 2019. See Note 9 for further information about derivative instruments.

Credit Risk

3 Months Ended

Mar. 31, 2020

Note 18. Credit Risk

The Companies’ accounting policies for credit risk are discussed in Note 24 to the Consolidated Financial Statements in the Companies’ Annual Report on Form 10-K for the year ended December 31, 2019.

At March 31, 2020, Dominion Energy’s gross credit exposure related to energy marketing and price risk management activities totaled $172 million. Of this amount, investment grade counterparties, including those internally rated, represented 95%. No single counterparty, whether investment grade or non-investment grade, exceeded $55 million of exposure. At March 31, 2020, Virginia Power’s exposure related to wholesale customers totaled $65 million. Of this amount, investment grade counterparties, including those internally rated, represented 100%. No single counterparty, whether investment grade or non-investment grade, exceeded $55 million of exposure. At March 31, 2020, Dominion Energy Gas’ exposure primarily related to wholesale customers totaled $45 million. Of this amount, investment grade counterparties, including those internally rated, represented 92%. No single counterparty, whether investment grade or non-investment grade, exceeded $12 million of exposure.

For the three months ended March 31, 2020 and 2019, the Export Customers comprised approximately 33% and 32%, respectively, of Dominion Energy Gas’ total operating revenue, with Dominion Energy Gas’ largest customer representing approximately 17% of such amount during both periods.

Credit-Related Contingent Provisions

The majority of Dominion Energy’s derivative instruments contain credit-related contingent provisions. These provisions require Dominion Energy to provide collateral upon the occurrence of specific events, primarily a credit rating downgrade. If the credit-related contingent features underlying these instruments that are in a liability position and not fully collateralized with cash were fully triggered as of March 31, 2020 and December 31, 2019, Dominion Energy would have been required to post $14 million and $10 million, respectively, of additional collateral to its counterparties. The collateral that would be required to be posted includes the impacts of any offsetting asset positions and any amounts already posted for derivatives, non-derivative contracts and derivatives elected under the normal purchases and normal sales exception, per contractual terms. Dominion Energy had posted $4 million of collateral at March 31, 2020 related to derivatives with credit-related contingent provisions that are in a liability position and not fully collateralized with cash and had posted no collateral at December 31, 2019. The aggregate fair value of all derivative instruments with credit-related contingent provisions that are in a liability position and not fully collateralized with cash was $18 million and $10 million at March 31, 2020 and December 31, 2019, respectively, which does not include the impact of any offsetting asset positions.

If the credit-related contingent features underlying these instruments that are in a liability position and not fully collateralized with cash were fully triggered as of March 31, 2020 and December 31, 2019, Virginia Power would have been required to post an additional $2 million and $8 million, respectively, of collateral to its counterparties.

Credit-related contingent provisions for Dominion Energy Gas were not material as of March 31, 2020 and December 31, 2019. See Note 9 for further information about derivative instruments.