XML 206 R77.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Acquisitions and Dispositions (Schedule of Acquisitions of Solar Projects) (Detail) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2017 USD ($) Project MW | Sep. 30, 2017 USD ($) Project MW | Jun. 30, 2017 USD ($) Project MW | May 31, 2017 USD ($) Project MW | Mar. 31, 2017 USD ($) Project MW | Feb. 28, 2017 USD ($) Project MW | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Project Cost |  |  |  |  |  |  |  | $ 341 | $ 151 | $ 405
Community Energy Solar, Inc |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Number of Projects | Project |  |  |  |  |  |  | 1 |  |  |
Total consideration | [1] |  |  |  |  |  | $ 29 |  |  |
Project Cost | [2] |  |  |  |  |  | $ 205 |  |  |
MW capacity | MW |  |  |  |  |  |  | 100 |  |  |
Solar Frontier Americas Holding, LLC |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Number of Projects | Project | [3] |  |  |  |  | 1 |  |  |  |
Total consideration | [1] |  |  |  |  | $ 77 |  |  |  |
Project Cost | [2] |  |  |  |  | $ 78 |  |  |  |
MW capacity | MW |  |  |  |  |  | 30 |  |  |  |
Cypress Creek Renewables, LLC |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Number of Projects | Project |  |  |  |  | 1 |  |  |  |  |
Total consideration | [1] |  |  |  | $ 154 |  |  |  |  |
Project Cost | [2] |  |  |  | $ 160 |  |  |  |  |
MW capacity | MW |  |  |  |  | 79 |  |  |  |  |
Hecate Energy Virginia C&C LLC |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Number of Projects | Project |  |  | 1 | 1 |  |  |  |  |  |
Total consideration | [1] |  | $ 40 | $ 16 |  |  |  |  |  |
Project Cost | [2] |  | $ 41 | $ 16 |  |  |  |  |  |
MW capacity | MW |  |  | 20 | 10 |  |  |  |  |  |
Strata Solar Development, LLC/Moorings Farm 2 Holdco, LLC |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Number of Projects | Project |  |  |  | 2 |  |  |  |  |  |
Total consideration | [1] |  |  | $ 20 |  |  |  |  |  |
Project Cost | [2] |  |  | $ 20 |  |  |  |  |  |
MW capacity | MW |  |  |  | 10 |  |  |  |  |  |
Strata Solar Development, LLC |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Number of Projects | Project |  | 2 |  |  |  |  |  |  |  |
Total consideration | [1] | $ 20 |  |  |  |  |  |  |  |
Project Cost | [2] | $ 21 |  |  |  |  |  |  |  |
MW capacity | MW |  | 10 |  |  |  |  |  |  |  |
[1] | The purchase price was primarily allocated to property, plant and equipment.
[2] | Includes acquisition cost.
[3] | In April 2017, Dominion Energy discontinued efforts on the acquisition of the additional 20 MW solar project from Solar Frontier Americas Holding LLC.

X
- Definition Capacity of facility of company owned solar distribution generation facilities. + References No definition available. + Details
Name: | d_CapacityOfFacilityOfCompanyOwnedSolarDistributionGenerationFacilities
Namespace Prefix: | d_
Data Type: | num:powerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of solar development projects acquired. + References No definition available. + Details
Name: | d_NumberOfSolarDevelopmentProjectsAcquired
Namespace Prefix: | d_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow from the amount invested for projects in hopes of getting a future return or interest from it. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireProjects
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=d_SolarProjectsFromCommunityEnergySolarIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=d_SolarProjectsFromSolarFrontierAmericasHoldingLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=d_CypressCreekRenewablesLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=d_SolarProjectsFromHecateEnergyVirginiaCAndCLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=d_SolarProjectsFromStrataSolarDevelopmentLLCAndMooringsFarmTwoHoldcoLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=d_StrataSolarDevelopmentLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |