Credit Risk	9 Months Ended
Sep. 30, 2012
Risks and Uncertainties [Abstract]
Credit Risk	Credit Risk Dominion’s and Virginia Power’s accounting policies for credit risk are discussed in Note 24 to the Consolidated Financial Statements in their Annual Report on Form 10-K for the year ended December 31, 2011. At September 30, 2012, Dominion's gross credit exposure totaled $529 million. After the application of collateral, credit exposure was reduced to $524 million. Of this amount, investment grade counterparties, including those internally rated, represented 81%. One counterparty exposure represented 11% of Dominion's total exposure and is a utility holding company rated investment grade. At September 30, 2012, Virginia Power's exposure to potential concentrations of credit risk was not considered material. Credit-Related Contingent Provisions The majority of Dominion's derivative instruments contain credit-related contingent provisions. These provisions require Dominion 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 September 30, 2012 and December 31, 2011, Dominion would have been required to post an additional $31 million and $88 million, respectively, of 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 had posted $5 million in collateral, including $4 million of letters of credit, at September 30, 2012 and $110 million in collateral, including $4 million of letters of credit, at December 31, 2011, related to derivatives with credit-related contingent provisions that are in a liability position and not fully collateralized with cash. The collateral posted includes any amounts paid related to non-derivative contracts and derivatives elected under the normal purchases and normal sales exception, per contractual terms. 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 as of September 30, 2012 and December 31, 2011 was $144 million and $259 million, respectively, which does not include the impact of any offsetting asset positions. Credit-related contingent provisions for Virginia Power were not material as of September 30, 2012 and December 31, 2011. See Note 8 for further information about derivative instruments.

Credit Risk

9 Months Ended

Sep. 30, 2012

Dominion’s and Virginia Power’s accounting policies for credit risk are discussed in Note 24 to the Consolidated Financial Statements in their Annual Report on Form 10-K for the year ended December 31, 2011.

At September 30, 2012, Dominion's gross credit exposure totaled $529 million. After the application of collateral, credit exposure was reduced to $524 million. Of this amount, investment grade counterparties, including those internally rated, represented 81%. One counterparty exposure represented 11% of Dominion's total exposure and is a utility holding company rated investment grade. At September 30, 2012, Virginia Power's exposure to potential concentrations of credit risk was not considered material.

Credit-Related Contingent Provisions

The majority of Dominion's derivative instruments contain credit-related contingent provisions. These provisions require Dominion 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 September 30, 2012 and December 31, 2011, Dominion would have been required to post an additional $31 million and $88 million, respectively, of 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 had posted $5 million in collateral, including $4 million of letters of credit, at September 30, 2012 and $110 million in collateral, including $4 million of letters of credit, at December 31, 2011, related to derivatives with credit-related contingent provisions that are in a liability position and not fully collateralized with cash. The collateral posted includes any amounts paid related to non-derivative contracts and derivatives elected under the normal purchases and normal sales exception, per contractual terms. 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 as of September 30, 2012 and December 31, 2011 was $144 million and $259 million, respectively, which does not include the impact of any offsetting asset positions. Credit-related contingent provisions for Virginia Power were not material as of September 30, 2012 and December 31, 2011. See Note 8 for further information about derivative instruments.