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Short Term Debt and Credit Agreements (Tables) | 12 Months Ended
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Dec. 31, 2020
Debt Instrument [Line Items] |
Schedule of Line of Credit Facilities | Dominion Energy’s short-term financing is supported through its access to the joint revolving credit facility described below. Commercial paper and letters of credit outstanding, as well as capacity available under the credit facility were as follows:
|  | Facility Limit |  |  | Outstanding Commercial Paper(1) |  |  | Outstanding Letters of Credit |  |  | Facility Capacity Available |
(millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
At December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Joint revolving credit facility(2)(3) |  | $ | 6,000 |  |  | $ | 627 |  |  | $ | 100 |  |  | $ | 5,273 |
At December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Joint revolving credit facility(2) |  | $ | 6,000 |  |  | $ | 836 |  |  | $ | 89 |  |  | $ | 5,075 |
(1) | The weighted-average interest rates of the outstanding commercial paper supported by Dominion Energy’s credit facility was 0.29% and 2.10% at December 31, 2020 and 2019, respectively.
(2) | This credit facility matures in March 2023 and can be used by the borrowers under the credit facility to support bank borrowings and the issuance of commercial paper, as well as to support up to a combined $2.0 billion of letters of credit.
(3) | In October 2020, the joint revolving credit facility was amended to remove Dominion Energy Gas as a co-borrower.
Virginia Electric and Power Company |
Debt Instrument [Line Items] |
Schedule of Line of Credit Facilities | Virginia Power’s share of commercial paper and letters of credit outstanding under the joint revolving credit facility with Dominion Energy, Questar Gas and DESC were as follows:
|  | Facility Limit |  |  | Outstanding Commercial Paper(1) |  |  | Outstanding Letters of Credit |
(millions) |  |  |  |  |  |  |  |  |  |  |  |
At December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |
Joint revolving credit facility(2)(3) |  | $ | 6,000 |  |  | $ | 45 |  |  | $ | 12 |
At December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Joint revolving credit facility(2) |  | $ | 6,000 |  |  | $ | 243 |  |  | $ | 7 |
(1) | The weighted-average interest rates of the outstanding commercial paper supported by the credit facility was 0.30% and 2.10% at December 31, 2020 and 2019, respectively.
(2) | The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers Dominion Energy, Questar Gas and DESC. The sub-limit for Virginia Power is set within the facility limit but can be changed at the option of the borrowers under the credit facility multiple times per year. At December 31, 2020, the sub-limit for Virginia Power was $1.5 billion. If Virginia Power has liquidity needs in excess of its sub-limit, the sub-limit may be changed or such needs may be satisfied through short-term intercompany borrowings from Dominion Energy. This credit facility matures in March 2023 and can be used to support bank borrowings and the issuance of commercial paper, as well as to support up to $2.0 billion (or the sub-limit, whichever is less) of letters of credit.
(3) | In October 2020, the joint revolving credit facility was amended to remove Dominion Energy Gas as a co-borrower.

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- Definition Tabular disclosure of short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e),(f)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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