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Short-Term Debt And Credit Agreements (Tables) | 12 Months Ended
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Dec. 31, 2019
Schedule of Line of Credit Facilities | 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, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Joint revolving credit facility (2) |  | $ | 6,000 |  |  |  | $836 |  |  |  | $89 |  |  | $ | 5,075 |
At December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Joint revolving credit facility (2) |  | $ | 6,000 |  |  |  | $324 |  |  |  | $88 |  |  | $ | 5,588 |
(1) | The weighted-average interest rates of the outstanding commercial paper supported by Dominion Energy’s credit facility was 2.10% and 2.93% at December 31, 2019 and 2018, 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.
Virginia Electric and Power Company |
Schedule of Line of Credit Facilities | Virginia Power’s share of commercial paper and letters of credit outstanding under its joint credit facility with Dominion Energy, Dominion Energy Gas, Questar Gas and DESC were as follows:
|  | Facility Limit |  |  | Outstanding Commercial Paper (1) |  |  | Outstanding Letters of Credit |
(millions) |  |  |  |  |  |  |  |  |
At December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Joint revolving credit facility (2) |  |  | $6,000 |  |  |  | $243 |  |  |  | $ 7 |
At December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |
Joint revolving credit facility (2) |  |  | $6,000 |  |  |  | $314 |  |  |  | $16 |
(1) | The weighted-average interest rates of the outstanding commercial paper supported by the credit facility was 2.10% and 2.94% at December 31, 2019 and 2018, respectively.
(2) | The full amount of the facility is available to Virginia Power, less any amounts outstanding to co-borrowers Dominion Energy, Dominion Energy Gas, 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, 2019, 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.
Dominion Energy Gas Holdings, LLC |
Schedule of Line of Credit Facilities | Dominion Energy Gas’ share of commercial paper and letters of credit outstanding under its joint credit facility with Dominion Energy, Virginia Power, Questar Gas and DESC were as follows:
|  | Facility Limit |  |  | Outstanding Commercial Paper (1) |  |  | Outstanding Letters of Credit |
(millions) |  |  |  |  |  |  |  |  |
At December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Joint revolving credit facility (2) |  |  | $1,500 |  |  |  | $62 |  |  |  | $— |
At December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |
Joint revolving credit facility (2) |  |  | $1,500 |  |  |  | $10 |  |  |  | $— |
(1) | The weighted-average interest rates of the outstanding commercial paper supported by the credit facility was 1.98% and 2.58% at December 31, 2019 and 2018, respectively.
(2) | A maximum of $1.5 billion of the facility is available to Dominion Energy Gas, assuming adequate capacity is available after giving effect to uses by co-borrowers Dominion Energy, Virginia Power, Questar Gas and DESC. The sub-limit for Dominion Energy Gas 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, 2019, the sub-limit for Dominion Energy Gas was $750 million. If Dominion Energy Gas 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 $1.5 billion (or the sub-limit, whichever is less) of letters of credit.

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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=6877327&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=26873400&loc=d3e23780-122690 + Details
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