XML 133 R121.htm IDEA: XBRL DOCUMENT
v3.19.3

Operating Segments (Narrative) (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Segment Reporting Information [Line Items] |  |
Other comprehensive income (loss), net of tax | $ (31.0) | $ 132.0
SCANA |  |
Segment Reporting Information [Line Items] |  |
Income tax related to regulatory assets acquired | 264.0 |
Income tax related to regulatory assets acquired, after tax | 198.0 |
Virginia Electric and Power Company |  |
Segment Reporting Information [Line Items] |  |
Other comprehensive income (loss), net of tax | (5.0) | 5.0
Operating Segments |  |
Segment Reporting Information [Line Items] |  |
After- tax net expenses | 1,400.0 | 218.0
Operating Segments | Virginia Electric and Power Company |  |
Segment Reporting Information [Line Items] |  |
After- tax net expenses | 324.0 | 189.0
Operating revenue recorded charge | 29.0 |
Operating revenue recorded charge, after tax | 22.0 |
Operating Segments | Virginia Electric and Power Company | Virginia Legislation |  |
Segment Reporting Information [Line Items] |  |
One-time rate credit amount |  | 215.0
One-time rate credit amount after tax |  | 160.0
Corporate and Other | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
After- tax net expenses | 1,600.0 | 238.0
Corporate and Other | Operating Segments | Virginia Electric and Power Company |  |
Segment Reporting Information [Line Items] |  |
After- tax net expenses | 344.0 | 197.0
Southeast Energy |  |
Segment Reporting Information [Line Items] |  |
Charge for refund of amounts from customers | 1.0 |
Charge for refund of amounts from customers, after tax | 756.0 |
Litigation settlement expense | 169.0 |
Litigation settlement expense, after tax | 127.0 |
Merger and integration related costs | 106.0 |
Merger and integration-related costs, after tax | 81.0 |
Charge for property, plant and equipment acquired but committed to forgo recovery | 105.0 |
Charge for property, plant and equipment acquired but committed to forgo recovery, after tax | 79.0 |
Power Generation | Virginia Electric and Power Company |  |
Segment Reporting Information [Line Items] |  |
Asset retirement obligations | 369.0 |
Asset retirement obligations, after tax | 275.0 |
Power Generation | Virginia Electric and Power Company | Virginia Legislation |  |
Segment Reporting Information [Line Items] |  |
Benefit from revision of future closure costs | 113.0 |
Benefit from revision of future closure costs, after tax | 84.0 |
Power Generation | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Gain loss on investments held in nuclear decommissioning trust funds | 253.0 | 43.0
Other comprehensive income (loss), net of tax | 189.0 | 32.0
Power Generation | Operating Segments | Virginia Electric and Power Company |  |
Segment Reporting Information [Line Items] |  |
Asset retirement obligations | 369.0 |
Asset retirement obligations, after tax | 275.0 |
Operating revenue recorded charge, after tax | 19.0 |
Power Generation | Operating Segments | Virginia Electric and Power Company | Virginia Legislation |  |
Segment Reporting Information [Line Items] |  |
Benefit from revision of future closure costs | 113.0 |
Benefit from revision of future closure costs, after tax | 84.0 |
Charge associated with one-time rate credits of certain amounts to utility customers, after tax |  | 109.0
Power Delivery | Virginia Electric and Power Company |  |
Segment Reporting Information [Line Items] |  |
Asset retirement obligations | 160.0 |
Asset retirement obligations, after tax | 119.0 |
Power Delivery | Operating Segments | Virginia Electric and Power Company |  |
Segment Reporting Information [Line Items] |  |
Asset retirement obligations | 160.0 |
Asset retirement obligations, after tax | 119.0 |
Operating revenue recorded charge, after tax | $ 3.0 |
Charge for storm damage and service restoration |  | 31.0
Charge for storm damage and service restoration, after tax |  | 23.0
Power Delivery | Operating Segments | Virginia Electric and Power Company | Virginia Legislation |  |
Segment Reporting Information [Line Items] |  |
Charge associated with one-time rate credits of certain amounts to utility customers, after tax |  | $ 51.0

X
- Definition Asset early retirement obligation expense. + References No definition available. + Details
Name: | d_AssetEarlyRetirementObligationExpense
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Asset early retirement obligation expense, after tax. + References No definition available. + Details
Name: | d_AssetEarlyRetirementObligationExpenseAfterTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Benefit from revision of environmental remediation expense. + References No definition available. + Details
Name: | d_BenefitFromRevisionOfEnvironmentalRemediationExpense
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Benefit from revision of environmental remediation expense after tax. + References No definition available. + Details
Name: | d_BenefitFromRevisionOfEnvironmentalRemediationExpenseAfterTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business combination acquisition related costs after tax. + References No definition available. + Details
Name: | d_BusinessCombinationAcquisitionRelatedCostsAfterTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Charge for property, plant and equipment acquired but committed to forgo recovery. + References No definition available. + Details
Name: | d_ChargeForPropertyPlantAndEquipmentAcquiredButCommittedToForgoRecovery
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Charge for property, plant and equipment acquired but committed to forgo recovery, after tax. + References No definition available. + Details
Name: | d_ChargeForPropertyPlantAndEquipmentAcquiredButCommittedToForgoRecoveryAfterTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Customer refundable fees refund payments after tax. + References No definition available. + Details
Name: | d_CustomerRefundableFeesRefundPaymentsAfterTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Litigation settlement expense after tax. + References No definition available. + Details
Name: | d_LitigationSettlementExpenseAfterTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition One time Rate Credits To Customers + References No definition available. + Details
Name: | d_OneTimeRateCreditsToCustomers
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition One time Rate Credits To Customers after tax + References No definition available. + Details
Name: | d_OneTimeRateCreditsToCustomersAfterTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Operating revenue recorded charge. + References No definition available. + Details
Name: | d_OperatingRevenueRecordedCharge
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Operating revenue recorded charge after tax. + References No definition available. + Details
Name: | d_OperatingRevenueRecordedChargeAfterTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Regulatory assets, net of deferred tax liabilities. + References No definition available. + Details
Name: | d_RegulatoryAssetsNetOfDeferredTaxLiabilities
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Storm damage and service restoration charge. + References No definition available. + Details
Name: | d_StormDamageAndServiceRestorationCharge
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Storm damage and service restoration charge net of tax. + References No definition available. + Details
Name: | d_StormDamageAndServiceRestorationChargeNetOfTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Tax cuts and jobs act of 2017 one time reclass of stranded tax effects resulting from revaluation of DTA due to change in federal tax rate net of tax. + References No definition available. + Details
Name: | d_TaxCutsAndJobsActOf2017OneTimeReclassOfStrandedTaxEffectsResultingFromRevaluationOfDTADueToChangeInFederalTaxRateNetOfTax
Namespace Prefix: | d_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
Name: | us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer, classified as current. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 55 -Paragraph 27 -URI http://asc.fasb.org/extlink&oid=118944142&loc=SL49130611-203046-203046 + Details
Name: | us-gaap_ContractWithCustomerRefundLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of deferred tax liability attributable to taxable temporary differences from regulatory assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=117330534&loc=d3e28680-109314 + Details
Name: | us-gaap_DeferredTaxLiabilitiesRegulatoryAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
Name: | us-gaap_NonoperatingIncomeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before tax, after reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33775-111570 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=118951672&loc=d3e1436-108581 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580 + Details
Name: | us-gaap_OtherComprehensiveIncomeLossNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | dei_LegalEntityAxis=d_VirginiaElectricAndPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAgencyAxis=d_VirginiaLegislationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_CorporateAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=d_SoutheastEnergyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=d_PowerGenerationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=d_PowerDeliveryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |