Entity Central Index Key
Electric fuel and other energy related purchases.
Costs incurred in purchasing (excess) electric capacity.
Costs incurred for purchased gas.
The amount of operating expenses, attributable to affiliated suppliers, for the period that are associated with the company's normal revenue producing operations.
Other operating and maintenance expenses including selling, general and administrative expenses.
Deferred charges, regulatory assets, and other assets, noncurrent.
Affiliated portion of collateralized/uncollateralized debt obligations due beyond one year/operating cycle. Subordinated debt places a lender in a lien position behind the primary lender of the company.
Provision for refunds and rate credits.
Payments to contributions equity method investments.
Proceeds from repayments of short term debt excluding credit borrowing facilities.
Disposal Group, Including Discontinued Operation, Interest and related charges.
Other revenues.
Decommissioning trust securities unrealized gains.
Decommissioning trust securities unrealized losses.
Decommissioning trust securities allowance for credit losses.
Decommissioning fund investments net.
Cover [Abstract]
Document Information [Table]
Document Information [Table]
Legal Entity
Legal Entity [Axis]
Entity
Entity [Domain]
Virginia Electric and Power Company.
Virginia Electric and Power Company
Virginia Electric And Power Company [Member]
Dominion Energy Gas Holdings, LLC.
Dominion Energy Gas Holdings, LLC
Dominion Energy Gas Holdings L L C [Member]
Class of Stock
Statement Class Of Stock [Axis]
Class of Stock
Class Of Stock [Domain]
Common Stock
Common Stock [Member]
Two thousand and sixteen series a five point two five percentage enhanced junior subordinated notes.
2016 Series A 5.25% Enhanced Junior Subordinated Notes
Two Thousand And Sixteen Series A Five Point Two Five Percentage Enhanced Junior Subordinated Notes [Member]
Two thousand and nineteen Series A corporate units.
2019 Series A Corporate Units
Two Thousand And Nineteen Series A Corporate Units [Member]
Two thousand and fourteen series c four point six percentage senior notes.
2014 Series C 4.6% Senior Notes
Two Thousand And Fourteen Series C Four Point Six Percentage Senior Notes [Member]
Document Information [Line Items]
Document Information [Line Items]
Document Type
Document Type
Amendment Flag
Amendment Flag
Document Period End Date
Document Period End Date
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Title of 12(b) Security
Security12b Title
Trading Symbol
Trading Symbol
No Trading Symbol Flag
No Trading Symbol Flag
Security Exchange Name
Security Exchange Name
Document Quarterly Report
Document Quarterly Report
Document Transition Report
Document Transition Report
Entity Interactive Data Current
Entity Interactive Data Current
Entity Incorporation, State or Country Code
Entity Incorporation State Country Code
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Filer Category
Entity Filer Category
Entity Small Business
Entity Small Business
Entity Emerging Growth Company
Entity Emerging Growth Company
Entity Common Stock, Shares Outstanding
Entity Common Stock Shares Outstanding
Entity Current Reporting Status
Entity Current Reporting Status
Entity Shell Company
Entity Shell Company
Entity File Number
Entity File Number
Entity Tax Identification Number
Entity Tax Identification Number
Entity Address, Address Line One
Entity Address Address Line1
Entity Address, City or Town
Entity Address City Or Town
Entity Address, State or Province
Entity Address State Or Province
Entity Address, Postal Zip Code
Entity Address Postal Zip Code
City Area Code
City Area Code
Local Phone Number
Local Phone Number
Income Statement [Abstract]
Statement [Table]
Statement [Table]
Statement [Line Items]
Statement [Line Items]
Operating Revenue
Revenues
Operating Expenses
Costs And Expenses [Abstract]
Electric fuel and other energy-related purchases
Electric Fuel And Other Energy Related Purchases
Purchased (excess) electric capacity
Purchased Excess Electric Capacity
Purchased gas
Purchased Gas
Other energy-related purchases
Utilities Operating Expense Gas And Petroleum Purchased
Affiliated suppliers
Affiliated Suppliers
Other operations and maintenance
Other Operations And Maintenance
Depreciation, depletion and amortization
Depreciation And Amortization
Other taxes
Taxes Excluding Income And Excise Taxes
Impairment of assets and other charges
Asset Impairment Charges
Total operating expenses
Costs And Expenses
Income (loss) from operations
Operating Income Loss
Earnings from equity method investee
Income Loss From Equity Method Investments
Other income (expense)
Other Nonoperating Income Expense
Interest and related charges
Interest And Debt Expense
Loss from operations including noncontrolling interests before income tax expense (benefit)
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
Income from continuing operations
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
Income tax expense (benefit)
Income Tax Expense Benefit
Net Income from continuing operations
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
Net Income from discontinued operations
Income Loss From Discontinued Operations Net Of Tax
Net Loss Including Noncontrolling Interests
Profit Loss
Noncontrolling Interests
Net Income Loss Attributable To Noncontrolling Interest
Net Income (Loss)
Net Income Loss
Earnings Per Common Share
Earnings Per Share Basic And Diluted [Abstract]
Net loss attributable to Dominion Energy - Basic
Earnings Per Share Basic
Net loss attributable to Dominion Energy - Diluted
Earnings Per Share Diluted
Amounts reclassified to net income loss.
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss) including noncontrolling interests
Net income (loss)
Other comprehensive income (loss), net of taxes:
Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]
Net deferred losses on derivatives-hedging activities
Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax
Changes in unrealized net gains on investment securities
Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
Amounts reclassified to net income (loss):
Amounts Reclassified To Net Income Loss [Abstract]
Net derivative (gains) losses-hedging activities
Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax
Net realized (gains) losses on investment securities
Other Comprehensive Income Loss Reclassification Adjustment From A O C I For Sale Of Securities Net Of Tax
Net pension and other postretirement benefit costs
Other Comprehensive Income Loss Reclassification Adjustment From A O C I Pension And Other Postretirement Benefit Plans Net Of Tax
Total other comprehensive loss
Other Comprehensive Income Loss Net Of Tax
Comprehensive income (loss) including noncontrolling interests
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest
Comprehensive income attributable to noncontrolling interests
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest
Comprehensive loss attributable to Dominion Energy
Comprehensive Income Net Of Tax
Net deferred losses on derivative-hedging activities, tax
Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax
Changes in unrealized net gains on investment securities, tax
Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax
Net derivative (gains) losses-hedging activities, tax
Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax
Net realized (gains) losses on investment securities, tax
Other Comprehensive Income Loss Reclassification Adjustment From A O C I For Sale Of Securities Tax
Net pension and other postretirement benefit costs, tax
Other Comprehensive Income Loss Reclassification Adjustment From A O C I Pension And Other Postretirement Benefit Plans Tax
Deferred Charges, Regulatory Assets, and Other Assets, Noncurrent [Abstract]
Statement Of Financial Position [Abstract]
ASSETS
Assets [Abstract]
Current Assets
Assets Current [Abstract]
Cash and cash equivalents
Cash And Cash Equivalents At Carrying Value
Customer receivables (less allowance for doubtful accounts)
Accounts Receivable Net Current
Other receivables (less allowance for doubtful accounts of $3 at both dates)
Other Receivables Net Current
Affiliated receivables
Due From Related Parties Current
Affiliated notes receivable
Notes Receivable Related Parties Current
Inventories
Inventory Net
Gas imbalances
Gas Imbalance Asset Liability
Regulatory assets
Regulatory Assets Current
Other
Other Assets Current
Total current assets
Assets Current
Investments
Long Term Investments [Abstract]
Affiliated notes receivable
Advances To Affiliate
Nuclear decommissioning trust funds
Decommissioning Fund Investments
Investment in equity method affiliates
Equity Method Investments
Other
Other Long Term Investments
Total investments
Long Term Investments
Property, Plant and Equipment
Property Plant And Equipment Net [Abstract]
Property, plant and equipment
Property Plant And Equipment Gross
Accumulated depreciation, depletion and amortization
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Total property, plant and equipment, net
Property Plant And Equipment Net
Deferred Charges and Other Assets
Deferred Charges Regulatory Assets And Other Assets Noncurrent [Abstract]
Goodwill
Goodwill
Regulatory assets
Regulatory Assets Noncurrent
Other
Other Assets Noncurrent
Total deferred charges and other assets
Deferred Charges Regulatory Assets And Other Assets Noncurrent
Total assets
Assets
Customer receivables, allowance for doubtful accounts
Allowance For Doubtful Accounts Receivable Current
Other receivables, allowance for doubtful accounts
Allowance For Doubtful Other Receivables Current
LIABILITIES AND EQUITY
Liabilities And Stockholders Equity [Abstract]
Current Liabilities
Liabilities Current [Abstract]
Securities due within one year
Long Term Debt And Capital Lease Obligations Current
Securities due within one year
Long Term Debt Current
Short-term debt
Short Term Borrowings
Accounts payable
Accounts Payable Current
Payables to affiliates
Due To Related Parties Current
Affiliated current borrowings
Due To Affiliate Current
Accrued interest, payroll and taxes
Accrued Liabilities Current
Regulatory liabilities
Regulatory Liability Current
Reserves for SCANA legal proceedings
Litigation Reserve Current
Asset retirement obligations
Asset Retirement Obligation
Derivative liabilities
Derivative Liabilities Current
Other
Other Liabilities Current
Total current liabilities
Liabilities Current
Long-Term Debt
Long Term Debt Noncurrent [Abstract]
Long-term debt
Long Term Debt Noncurrent
Long-term debt
Long Term Debt
Junior subordinated notes
Subordinated Debt Long Term Affiliates
Finance leases
Finance Lease Liability Noncurrent
Total long-term debt
Long Term Debt And Capital Lease Obligations
Deferred Credits and Other Liabilities
Other Liabilities Noncurrent [Abstract]
Deferred income taxes and investment tax credits
Deferred Tax Liabilities Noncurrent
Asset retirement obligations
Asset Retirement Obligations Noncurrent
Regulatory liabilities
Regulatory Liability Noncurrent
Derivative liabilities
Derivative Liabilities Noncurrent
Other
Other Liabilities Noncurrent
Total deferred credits and other liabilities
Deferred Credits And Other Liabilities
Total liabilities
Liabilities
Commitments and Contingencies (see Note 17)
Commitments And Contingencies
Equity
Stockholders Equity [Abstract]
Preferred stock (See Note 16)
Preferred Stock Value
Common stock - no par
Common Stock Value
Other paid-in capital
Additional Paid In Capital Common Stock
Retained earnings
Retained Earnings Accumulated Deficit
Membership interests
Members Capital
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income Loss Net Of Tax
Total shareholders' equity
Stockholders Equity
Total members' equity
Members Equity
Noncontrolling interests
Minority Interest
Total equity
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
Total liabilities and equity
Liabilities And Stockholders Equity
Common stock, shares authorized
Common Stock Shares Authorized
Common stock, shares outstanding
Common Stock Shares Outstanding
Acquisition of public interest, increase (decrease) in equity and noncontrolling interest from acquisition, shares.
Acquisition of public interest, amount of increase (decrease) in equity and noncontrolling interest from acquisition.
Statement Of Stockholders Equity [Abstract]
Total Shareholders' Equity
Statement Equity Components [Axis]
Equity Component
Equity Component [Domain]
Preferred Stock
Preferred Stock [Member]
Retained Earnings
Retained Earnings [Member]
AOCI
Accumulated Other Comprehensive Income [Member]
Total Shareholders' Equity
Parent [Member]
Noncontrolling Interests
Noncontrolling Interest [Member]
Beginning balance
Beginning balance (in shares)
Shares Outstanding
Cumulative-effect of changes in accounting principles
Cumulative Effect On Retained Earnings Net Of Tax1
Issuance of common stock
Stock Issued During Period Value New Issues
Issuance of common stock (in shares)
Stock Issued During Period Shares New Issues
Acquisition of SCANA
Stock Issued During Period Value Acquisitions
Acquisition of SCANA (in shares)
Stock Issued During Period Shares Acquisitions
Acquisition of public interest in Dominion Energy Midstream
Acquisition Of Public Interest Amount Of Increase Decrease In Equity And Noncontrolling Interest From Acquisition
Acquisition of public interest in Dominion Energy Midstream (in shares)
Acquisition Of Public Interest Increase Decrease In Equity And Noncontrolling Interest From Acquisition Shares
Preferred stock dividends and distributions
Dividends Preferred Stock Cash
Common stock dividends and distributions
Dividends Common Stock Cash
Dividends and distributions
Dividends Cash
Other comprehensive loss, net of tax
Other
Stockholders Equity Other
Ending balance
Ending balance (in shares)
Dividends declared per common share
Common Stock Dividends Per Share Declared
Financing leases.
Statement Of Cash Flows [Abstract]
Operating Activities
Net Cash Provided By Used In Operating Activities [Abstract]
Adjustments to reconcile net income (loss) including noncontrolling interests to net cash provided by operating activities:
Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract]
Depreciation, depletion and amortization (including nuclear fuel)
Depreciation Amortization And Accretion Net
Deferred income taxes and investment tax credits
Deferred Income Taxes And Tax Credits
Provision for refunds and rate credits to electric utility customers
Provision For Refunds And Rate Credits
Net losses (gains) on nuclear decommissioning trust funds and other investments
Gain Loss On Investments
Revision to future ash pond and landfill closure costs
Environmental Expense And Liabilities
Other adjustments
Other Noncash Income Expense
Changes in:
Increase Decrease In Operating Capital [Abstract]
Accounts receivable
Increase Decrease In Accounts Receivable
Affiliated receivables and payables
Increase Decrease In Due From Affiliates Current
Inventories
Increase Decrease In Inventories
Deferred fuel and purchased gas costs, net
Increase Decrease In Deferred Fuel Costs
Prepayments
Increase Decrease In Prepaid Expense
Accounts payable
Increase Decrease In Accounts Payable
Accrued interest, payroll and taxes
Increase Decrease In Accrued Liabilities
Customer deposits
Increase Decrease In Contract With Customer Liability
Margin deposit assets and liabilities
Increase Decrease In Margin Deposits Outstanding
Other operating assets and liabilities
Increase Decrease In Other Operating Capital Net
Net cash provided by operating activities
Net Cash Provided By Used In Operating Activities
Investing Activities
Net Cash Provided By Used In Investing Activities [Abstract]
Plant construction and other property additions (including nuclear fuel)
Payments To Acquire Property Plant And Equipment
Purchases of nuclear fuel
Payments For Nuclear Fuel
Cash and restricted cash acquired in the SCANA Combination
Cash Acquired From Acquisition
Acquisition of solar development projects
Payments To Acquire Projects
Proceeds from sales of securities
Proceeds From Sale And Maturity Of Marketable Securities
Purchases of securities
Payments To Acquire Marketable Securities
Proceeds from sales of assets and equity method investments
Proceeds From Sale Of Productive Assets
Contributions to equity method affiliates
Payments To Contributions Equity Method Investments
Acquisitions of equity method investments
Payments To Acquire Equity Method Investments
Advances to affiliates
Payments For Advance To Affiliate
Other
Payments For Proceeds From Other Investing Activities
Net cash used in investing activities
Net Cash Provided By Used In Investing Activities
Financing Activities
Net Cash Provided By Used In Financing Activities [Abstract]
Issuance (repayment) of short-term debt, net
Proceeds From Repayments Of Short Term Debt Excluding Credit Borrowing Facilities
Repayment of affiliated current borrowings, net
Proceeds From Repayments Of Related Party Debt
Issuance of short-term notes
Proceeds From Notes Payable
Repayment of credit facility borrowings
Repayments Of Lines Of Credit
Issuance of long-term debt
Proceeds From Issuance Of Long Term Debt
Repayment of long-term debt
Repayments Of Long Term Debt
Issuance of affiliated long-term debt
Proceeds From Related Party Debt
Issuance of common stock
Proceeds From Issuance Of Common Stock
Common dividend payments
Payments Of Dividends Common Stock
Dividends and distributions
Payments Of Dividends Minority Interest
Other
Proceeds From Payments For Other Financing Activities
Net cash provided by (used in) financing activities
Net Cash Provided By Used In Financing Activities
Increase (decrease) in cash, restricted cash and equivalents
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
Cash, restricted cash and equivalents at beginning of period
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
Cash, restricted cash and equivalents at end of period
Supplemental Cash Flow Information
Supplemental Cash Flow Information [Abstract]
Significant noncash investing and financing activities:
Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract]
Accrued capital expenditures
Capital Expenditures Incurred But Not Yet Paid
Financing leases
Financing Leases
Other Paid-In Capital
Additional Paid In Capital [Member]
Beginning balance
Other comprehensive income (loss), net of tax
Ending balance
Net realized and unrealized changes related to derivative activities
Increase Decrease In Commodity Contract Assets And Liabilities
Asset retirement obligations
Increase Decrease In Asset Retirement Obligations
Credit facility borrowings
Proceeds From Lines Of Credit
Predecessor equity.
Predecessor Equity
Predecessor Equity [Member]
Member Interests
Member Units [Member]
Other comprehensive loss, net of tax
Other Comprehensive Income Loss Tax Portion Attributable To Parent1
Other
Pension and other postretirement benefits
Increase Decrease In Pension And Postretirement Obligations
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Nature of Operations
Nature Of Operations
Accounting Policies [Abstract]
Significant Accounting Policies
Significant Accounting Policies [Text Block]
Text Block [Abstract]
Acquisitions and Dispositions
Mergers Acquisitions And Dispositions Disclosures [Text Block]
Operating Revenue Disclosure [Text Block]
Operating Revenue
Operating Revenue Disclosure [Text Block]
Income Tax Disclosure [Abstract]
Income Taxes
Income Tax Disclosure [Text Block]
Earnings Per Share [Abstract]
Earnings Per Share
Earnings Per Share [Text Block]
Equity [Abstract]
Accumulated Other Comprehensive Income
Stockholders Equity Note Disclosure [Text Block]
Fair Value Disclosures [Abstract]
Fair Value Measurements
Fair Value Disclosures [Text Block]
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives and Hedge Accounting Activities
Derivative Instruments And Hedging Activities Disclosure [Text Block]
Investments, Debt and Equity Securities [Abstract]
Investments
Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosure [Text Block]
Property Plant And Equipment [Abstract]
Property, Plant and Equipment
Property Plant And Equipment Disclosure [Text Block]
Regulated Operations [Abstract]
Regulatory Assets and Liabilities
Schedule Of Regulatory Assets And Liabilities [Text Block]
Regulatory Matters
Public Utilities Disclosure [Text Block]
Leases [Abstract]
Leases
Leases Of Lessee Disclosure [Text Block]
Variable Interest Entities
Variable Interest Entity Disclosure [Text Block]
Debt Disclosure [Abstract]
Significant Financing Transactions
Debt Disclosure [Text Block]
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies
Commitments And Contingencies Disclosure [Text Block]
Risks and Uncertainties [Abstract]
Credit Risk
Concentration Risk Disclosure [Text Block]
Related Party Transactions [Abstract]
Related-Party Transactions
Related Party Transactions Disclosure [Text Block]
Retirement Benefits [Abstract]
Employee Benefit Plans
Pension And Other Postretirement Benefits Disclosure [Text Block]
Segment Reporting [Abstract]
Operating Segments
Segment Reporting Disclosure [Text Block]
Basis of Accounting
Basis Of Accounting Policy Policy [Text Block]
Estimates
Use Of Estimates
Consolidation
Consolidation Policy [Text Block]
Reclassifications
Prior Period Reclassification Adjustment Description
Cash, Restricted Cash and Equivalents
Cash And Cash Equivalents Restricted Cash And Cash Equivalents Policy
Property, Plant and Equipment
Property Plant And Equipment Policy [Text Block]
Credit Risk
Concentration Risk Credit Risk
Investments
Investment Policy [Text Block]
Fair Value Measurements
Fair Value Measurement Policy Policy [Text Block]
Regulatory Matters Involving Potential Loss Contingencies
Public Utilities Policy [Text Block]
Commitments and Contingencies
Commitments And Contingencies Policy [Text Block]
Guarantees, Surety Bonds and Letters of Credit
Minimum Guarantees Policy
Reconciliation of Total Cash, Restricted Cash and Equivalents
Schedule Of Cash And Cash Equivalents Table [Text Block]
Business Acquisition
Business Acquisition [Axis]
Business Acquisition, Acquiree
Business Acquisition Acquiree [Domain]
SCANA.
SCANA
S C A N A [Member]
Disposal Group Name
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Axis]
Disposal Group Name
Disposal Groups Including Discontinued Operations Name [Domain]
East Ohio.
East Ohio
East Ohio [Member]
Dominion Gathering and Processing, Inc..
DGP
Dominion Gathering And Processing Inc [Member]
Business Acquisition, Pro Forma Information
Business Acquisition Pro Forma Information [Text Block]
Schedule of Operations, Assets and Liabilities, Capital Expenditures and Significant Noncash Items Reported as Discontinued Operations
Schedule Of Disposal Groups Including Discontinued Operations Income Statement Balance Sheet And Additional Disclosures [Text Block]
This element contains information about the components of the entity's operating revenue.
Regulated And Unregulated Operating Revenue [Abstract]
Schedule of Operating Revenue
Operating Revenue Table [Text Block]
Schedule of Aggregate Amount of Transaction Price Allocated To Fixed-price Performance Obligations That Unsatisfied At End of Reporting Period And Expected To be Recognized
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Table [Text Block]
Effective Income Tax
Schedule Of Effective Income Tax Rate Reconciliation Table [Text Block]
Earnings Per Share Computation
Schedule Of Earnings Per Share Basic And Diluted Table [Text Block]
Accumulated Other Comprehensive Income Loss [Table]
Accumulated Other Comprehensive Income Loss [Table]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income Loss [Line Items]
Schedule of Accumulated Other Comprehensive Income (Loss)
Schedule Of Accumulated Other Comprehensive Income Loss Table [Text Block]
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Out Of Accumulated Other Comprehensive Income Table [Text Block]
Fair Value Inputs, Assets, Quantitative Information
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques Table [Text Block]
Fair value options qualitative disclosure related to election.
Fair Value, Options, Qualitative Disclosures
Fair Value Options Qualitative Disclosure Related To Election Table [Text Block]
Fair Value, by Balance Sheet Grouping
Fair Value By Balance Sheet Grouping [Text Block]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation Table [Text Block]
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments
Schedule Of Carrying Values And Estimated Fair Values Of Debt Instruments Table [Text Block]
Offsetting Assets
Offsetting Assets Table [Text Block]
Offsetting Liabilities
Offsetting Liabilities Table [Text Block]
Schedule of Volume of Derivative Activity
Schedule Of Notional Amounts Of Outstanding Derivative Positions Table [Text Block]
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)
Schedule Of Cash Flow Hedges Included In Accumulated Other Comprehensive Income Loss Table [Text Block]
Schedule of Amounts Recorded on Balance Sheet Related to Cumulative Basis Adjustments for Fair Value Hedges
Schedule Of Fair Value Hedging Instruments Statements Of Financial Performance And Financial Position Location Table [Text Block]
Fair Value of Derivatives
Schedule Of Derivative Instruments In Statement Of Financial Position Fair Value [Text Block]
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location
Schedule Of Cash Flow Hedging Instruments Statements Of Financial Performance And Financial Position Location Table [Text Block]
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance
Schedule Of Other Derivatives Not Designated As Hedging Instruments Statements Of Financial Performance And Financial Position Location Table [Text Block]
Investments Debt And Equity Securities [Abstract]
Equity and Debt Securities and Cash Equivalents and Cost Method Investments in Decommissioning Trust Funds
Trading Securities And Certain Trading Assets [Text Block]
Unrealized Gain Loss on Equity
Unrealized Gain Loss On Investments Table [Text Block]
Investments Classified by Contractual Maturity Date
Investments Classified By Contractual Maturity Date Table [Text Block]
Marketable Securities
Marketable Securities [Text Block]
Schedule of Business Acquisitions, by Acquisition
Schedule Of Business Acquisitions By Acquisition [Text Block]
Schedule of Regulatory Assets
Schedule Of Regulatory Assets [Text Block]
Schedule of Regulatory Liabilities
Schedule Of Regulatory Liabilities [Text Block]
Developments for significant riders associated with VIRGINIA power projects.
Public Utilities General Disclosures [Table]
Public Utilities General Disclosures [Table]
Public Utilities General Disclosures [Line Items]
Public Utilities General Disclosures [Line Items]
Schedule of Developments for Significant Riders Associated with Virginia Power Projects
Developments For Significant Riders Associated With Virginia Power Projects Table [Text Block]
Debt Instrument [Table]
Debt Instrument [Table]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Schedule of Line of Credit Facilities
Schedule Of Line Of Credit Facilities [Text Block]
Schedule of Equity Units
Schedule Of Capital Units [Text Block]
Schedule Of Subsidiary Guarantees
Schedule Of Guarantee Obligations [Text Block]
Schedule of Related Party Transactions
Schedule Of Related Party Transactions Table [Text Block]
Schedule of related party transactions and other affiliates and related parties.
Schedule of Related Party Transactions
Schedule Of Related Party Transactions And Other Affiliates And Related Parties Table [Text Block]
Compensation And Retirement Disclosure [Abstract]
Defined Benefit Plans And Other Postretirement Benefit Plans Disclosures [Table]
Defined Benefit Plans And Other Postretirement Benefit Plans Disclosures [Table]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Net Periodic Benefit Cost (Credit)
Schedule Of Net Benefit Costs Table [Text Block]
Segment reporting disclosure other information.
Schedule Of Segment Reporting Information By Segment [Table]
Schedule Of Segment Reporting Information By Segment [Table]
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Schedule of Primary Operating Segments
Segment Reporting Disclosure Other Information Table [Text Block]
Schedule of Segment Reporting Information, by Segment
Schedule Of Segment Reporting Information By Segment [Text Block]
Subsidiary Or Equity Method Investee Sale Of Stock By Subsidiary Or Equity Investee [Table]
Subsidiary Or Equity Method Investee Sale Of Stock By Subsidiary Or Equity Investee [Table]
Ownership
Ownership [Axis]
Ownership
Ownership [Domain]
White river hub.
White River Hub
White River Hub [Member]
Iroquois gas transmission system LP.
Iroquois
Iroquois Gas Transmission System L P [Member]
Subsidiary Sale Of Stock [Line Items]
Subsidiary Sale Of Stock [Line Items]
Percentage ownership in total units
Minority Interest Ownership Percentage By Parent
[Line Items] for Significant Accounting Policies [Table]
Significant Accounting Policies [Table]
Significant Accounting Policies [Table]
Significant Accounting Policies [Table]
Four brothers and three cedars.
Four Brothers and Three Cedars
Four Brothers And Three Cedars [Member]
Dominion Energy Midstream Partners, LP.
Dominion Energy Midstream Partners, LP
Dominion Energy Midstream Partners L P [Member]
Terra nova renewable partners.
Terra Nova Renewable Partners
Terra Nova Renewable Partners [Member]
Merchant solar projects.
Merchant Solar Projects
Merchant Solar Projects [Member]
Option Indexed to Issuer's Equity
Option Indexed To Issuers Equity Equity [Axis]
Option Indexed to Issuer's Equity, Type
Option Indexed To Issuers Equity Type [Domain]
Call Option
Call Option [Member]
Income Statement Location
Income Statement Location [Axis]
Income Statement Location
Income Statement Location [Domain]
Impairment of assets and other charges.
Impairment of Assets and Other Charges
Impairment Of Assets And Other Charges [Member]
Change in Accounting Estimate by Type
Change In Accounting Estimate By Type [Axis]
Change in Accounting Estimate, Type
Change In Accounting Estimate Type [Domain]
Change in depreciation rates from new depreciation study.
Change In Depreciation Rates From New Depreciation Study
Change In Depreciation Rates From New Depreciation Study [Member]
Change in Estimated Useful Life [Member]
Change in Estimated Useful Life
Changein Estimated Useful Life [Member]
Property, Plant and Equipment, Type
Property Plant And Equipment By Type [Axis]
Property, Plant and Equipment, Type
Property Plant And Equipment Type [Domain]
Merchant generation assets
Electric Generation Equipment [Member]
Scenario
Statement Scenario [Axis]
Scenario
Scenario Unspecified [Domain]
Scenario Forecast
Scenario Forecast [Member]
Significant Accounting Policies [Line Items]
Significant Accounting Policies [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired
Business Acquisition Percentage Of Voting Interests Acquired
Percentage of equity interest sold to noncontrolling interest owners
Minority Interest Ownership Percentage By Noncontrolling Owners
Cash, cash equivalents and restricted cash.
Cash Cash Equivalents And Restricted Cash [Abstract]
Cash, cash equivalents and restricted cash.
Schedule of cash, cash equivalents and restricted cash.
Schedule Of Cash Cash Equivalents And Restricted Cash [Table]
Schedule Of Cash Cash Equivalents And Restricted Cash [Table]
Cash Cash Equivalents And Restricted Cash [Line Items]
Cash Cash Equivalents And Restricted Cash [Line Items]
Restricted cash and equivalents
Restricted Cash And Cash Equivalents At Carrying Value
Cash, restricted cash and equivalents shown in the Consolidated Statements of Cash Flows
Cash, restricted cash and equivalents classified as discontinued operations
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Disposal Group Including Discontinued Operations
Asset Impairment Charges After Tax
Asset impairment charges after tax
Asset Impairment Charges After Tax
Capacity of facility of company owned solar distribution generation facilities.
Number of facilities in cold reserve units retired.
MW Capacity
Capacity Of Facility Of Company Owned Solar Distribution Generation Facilities
Number of facilities in cold reserve units retired
Number Of Facilities In Cold Reserve Units Retired
Utilities operating expense, increase (decrease) in depreciation and amortization.
Utilities operating expense, increase (decrease) in depreciation and amortization, after tax.
Increase Decrease In Earnings Per Share
Increase (decrease) in depreciation expense
Utilities Operating Expense Increase Decrease In Depreciation And Amortization
Increase (decrease) in depreciation expense, after tax
Utilities Operating Expense Increase Decrease In Depreciation And Amortization After Tax
Increase in EPS
Increase Decrease In Earnings Per Share
Business acquisition equity interests issued or issuable number of shares issued upon merger, ratio.
Business combinations, discontinued operations and disposal groups.
Business Combinations Discontinued Operations And Disposal Groups [Abstract]
Business acquisition and dispositions line items.
Business acquisition and dispositions.
Business Acquisition And Dispositions [Table]
Business Acquisition And Dispositions [Table]
NND Project.
NND Project
N N D Project [Member]
Income tax expense (benefit).
Income tax expense (benefit)
Income Tax Expense Benefit [Member]
Business Acquisition And Dispositions [Line Items]
Business Acquisition And Dispositions [Line Items]
Stock issued during period for acquisition, shares
Stock issued during period for acquisition, value
Common stock agreed to be issued, percentage
Business Acquisition Equity Interests Issued Or Issuable Number Of Shares Issued Upon Merger Ratio
Total outstanding debt
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Liabilities Long Term Debt
Period to provide refund to customer.
Increase Decrease In Operating Deferred Revenue
Period to provide refund to customer
Period To Provide Refund To Customer
Regulatory Liabilities
Regulatory Liabilities
Reduction in operating revenue
Increase Decrease In Operating Deferred Revenue
After tax charge in statements of income
Asset Impairment and other charges net of tax.
Property, plant and equipment
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment
Impairment of assets and other charges, after tax
Asset Impairment And Other Charges Net Of Tax
Increase decrease in regulatory assets.
Income tax regulatory assets
Increase Decrease In Regulatory Assets
Schedule Of Business Acquisitions By Acquisition [Table]
Schedule Of Business Acquisitions By Acquisition [Table]
Dominion Energy
Dominion Energy
Dominion Energy [Member]
Other operations and maintenance expense.
Other Operations and Maintenance
Other Operations And Maintenance Expense [Member]
Interest and related charges.
Interest and Related Charges
Interest And Related Charges [Member]
Business Acquisition [Line Items]
Business Acquisition [Line Items]
Increase in operating revenue
Business Combination Pro Forma Information Revenue Of Acquiree Since Acquisition Date Actual
Increase (decrease) in net income
Business Combination Pro Forma Information Earnings Or Loss Of Acquiree Since Acquisition Date Actual
Merger and integration-related costs
Business Combination Acquisition Related Costs
Operating Revenue
Business Acquisitions Pro Forma Revenue
Net income attributable to Dominion Energy
Business Acquisitions Pro Forma Net Income Loss
Earnings Per Common Share – Basic
Business Acquisition Pro Forma Earnings Per Share Basic
Earnings Per Common Share – Diluted
Business Acquisition Pro Forma Earnings Per Share Diluted
Business Combinations [Abstract]
Dominion Cove Point LNG, LP.
Cove Point
Dominion Cove Point L N G L P [Member]
Percentage Of Controlling Ownership
Equity Method Investment Ownership Percentage
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Table]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Table]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Operating revenue
Disposal Group Including Discontinued Operation Revenue
Depreciation and amortization
Depreciation And Amortization Discontinued Operations
Other operating expenses
Disposal Group Including Discontinued Operation Other Expense
Other income
Disposal Group Including Discontinued Operation Other Income
Interest and related charges
Disposal Group Including Discontinued Operation Interest And Related Charges
Income tax expense
Discontinued Operation Tax Effect Of Discontinued Operation
Net income (loss) from discontinued operations
Capital expenditures
Capital Expenditure Discontinued Operations
Significant noncash items
Noncash Investing And Financing Items [Abstract]
Public Utilities General Disclosures [Abstract]
Product and Service
Product Or Service [Axis]
Product and Service
Products And Services [Domain]
Regulated Electric Sales
Electricity Us Regulated [Member]
Member stands for non-regulated electric sales.
Nonregulated Electric Sales
Nonregulated Electricity Sales [Member]
Member stands for Regulated gas sales.
Regulated Gas Sales
Regulated Gas Sales [Member]
Member stands for non-regulated gas operations.
Nonregulated Gas Sales
Nonregulated Gas Operations [Member]
Member stands for regulated gas transportation and storage.
Regulated Gas Transportation and Storage
Regulated Gas Transportation And Storage [Member]
Member stands for non-regulated gas transportation and storage.
Nonregulated gas transportation and storage
Nonregulated Gas Transportation And Storage [Member]
Member stands for revenues from other regulated activities.
Other Regulated Revenues
Other Regulated Revenues [Member]
Member stands for revenues from other non-regulated activities.
Other Nonregulated Revenues
Other Nonregulated Revenues [Member]
Nonregulated gas sale.
Nonregulated Gas Sale
Nonregulated Gas Sale [Member]
Management Service
Management Service [Member]
Contract with Customer, Sales Channel
Contract With Customer Sales Channel [Axis]
Contract with Customer, Sales Channel
Contract With Customer Sales Channel [Domain]
Residential.
Residential
Residential [Member]
Commercial.
Commercial
Commercial [Member]
Industrial.
Industrial
Industrial [Member]
Government and other retail.
Government and Other Retail
Government And Other Retail [Member]
Wholesale.
Wholesale
Wholesale [Member]
Other.
Other
Other [Member]
Regulatory Agency
Regulatory Agency [Axis]
Regulatory Agency
Regulatory Agency [Domain]
Federal Energy Regulatory Commission.
FERC-regulated
Federal Energy Regulatory Commission [Member]
State regulatory.
State-regulated
State Regulatory [Member]
Operating revenue from contracts with customers
Revenue From Contract With Customer Excluding Assessed Tax
Other revenues
Other Revenues
Total operating revenue
Regulated And Unregulated Operating Revenue
NGL Midstream
Natural Gas Midstream [Member]
Renewable energy investment tax credits.
Renewable Energy Investment Tax Credits
Renewable Energy Investment Tax Credits [Member]
Alternative revenue programs.
Alternative Revenue Programs
Alternative Revenue Programs [Member]
Timing of Transfer of Good or Service
Timing Of Transfer Of Good Or Service [Axis]
Timing of Transfer of Good or Service
Timing Of Transfer Of Good Or Service [Domain]
Transferred at a Point in Time
Transferred At Point In Time [Member]
Operating revenue from contracts with customers
Revenue From Contract With Customer Including Assessed Tax
Revenue From Contract With Customer [Abstract]
Revenues from contract with customer.
Revenues from customers with customers.
Revenues From Customers With Customers [Table]
Revenues From Customers With Customers [Table]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Start Date [Axis]
Revenues From Contract With Customer [Line Items]
Revenues From Contract With Customer [Line Items]
Revenue, expected to be recognized on multi-year contracts
Revenue Remaining Performance Obligation
Revenue, expected to be recognized on multi-year contracts, period
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1
Contract asset balances
Contract With Customer Asset Net
Contract liability balances
Contract With Customer Liability
Revenue recognized from contract liability balances
Contract With Customer Liability Revenue Recognized
Effective income tax rate reconciliation reversal of excess deferred income taxes.
Effective income tax rate reconciliation write-off of regulatory assets.
Effective income tax rate reconciliation allowance for funds used during construction equity.
Effective income tax computation.
Disclosure of information about effective income tax computation.
Effective Income Tax Computation [Table]
Effective Income Tax Computation [Table]
Virginia power and dominion energy gas.
Dominion Energy Gas Holdings, LLC
Virginia Power And Dominion Energy Gas [Member]
Effective Income Tax Computation [Line Items]
Effective Income Tax Computation [Line Items]
U.S. statutory rate
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
Increases (reductions) resulting from:
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]
State taxes, net of federal benefit
Effective Income Tax Rate Reconciliation State And Local Income Taxes
Investment tax credits
Effective Income Tax Rate Reconciliation Tax Credits Investment
Production tax credits
Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities
Reversal of excess deferred income taxes
Effective Income Tax Rate Reconciliation Reversal Of Excess Deferred Income Taxes
Write-off of regulatory assets
Effective Income Tax Rate Reconciliation Write Off Of Regulatory Assets
AFUDC - equity
Effective Income Tax Rate Reconciliation Allowance For Funds Used During Construction Equity
Other, net
Effective Income Tax Rate Reconciliation Other Adjustments
Effective tax rate
Effective Income Tax Rate Continuing Operations
Noncontrolling Interest Income (Loss), Percent
Effective Income Tax Rate Reconciliation Minority Interest Income Expense
Federal statutory income tax rate
Effective income tax rate reconciliation Limitation for tax deduction for interest expense percent.
Net operating losses carryback period.
Net operating losses carryback period
Net Operating Losses Carryback Period
Percentage of deductibility of interest expense
Effective Income Tax Rate Reconciliation Limitation For Tax Deduction For Interest Expense Percent
Deferred income tax expense
Deferred Income Tax Expense Benefit
Net income loss available to common stockholders basic and diluted.
Net loss attributable to Dominion Energy
Preferred stock dividends (see Note 16)
Preferred Stock Dividends Income Statement Impact
Net loss attributable to Dominion Energy – Basic & Diluted
Net Income Loss Available To Common Stockholders Basic And Diluted
Average shares of common stock outstanding – Basic & Diluted
Weighted Average Number Of Share Outstanding Basic And Diluted
Earnings Per Common Share – Basic & Diluted
Earnings Per Share Basic And Diluted
Deferred Gains and Losses on Derivatives-Hedging Activities
Accumulated Gain Loss Net Cash Flow Hedge Parent [Member]
Unrealized Gains and Losses on Investment Securities
Accumulated Net Unrealized Investment Gain Loss [Member]
Unrecognized Pension and Other Postretirement Benefit Costs
Accumulated Defined Benefit Plans Adjustment [Member]
Other comprehensive income (loss) from equity method investees.
Other Comprehensive Loss From Equity Method Investees
Other Comprehensive Income Loss From Equity Method Investees [Member]
Accumulated Other Comprehensive Income (Loss)
Other comprehensive income before reclassifications: gains (losses)
Other Comprehensive Income Loss Before Reclassifications Net Of Tax
Amounts reclassified from AOCI: (gains) losses
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax
Less other comprehensive income (loss) attributable to noncontrolling interest
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest
Accumulated Gain Loss Cash Flow Hedge Including Noncontrolling Interest [Member]
Unrealized (gains) and losses on investment securities:
Accumulated Net Investment Gain Loss Including Portion Attributable To Noncontrolling Interest [Member]
Amortization of prior-service costs (credits)
Accumulated Defined Benefit Plans Adjustment Net Prior Service Including Portion Attributable To Noncontrolling Interest [Member]
Amortization of actuarial losses
Accumulated Defined Benefit Plans Adjustment Net Gain Loss Including Portion Attributable To Noncontrolling Interest [Member]
Unrecognized pension and other postretirement benefit costs
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable To Noncontrolling Interest [Member]
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Out Of Accumulated Other Comprehensive Income [Axis]
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Out Of Accumulated Other Comprehensive Income [Domain]
Amounts Reclassified From AOCI
Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Derivative Instrument
Derivative Instrument Risk [Axis]
Derivative Contract
Derivative Contract Type [Domain]
Commodity contracts
Commodity Contract [Member]
Interest rate contracts
Interest Rate Contract [Member]
Foreign currency
Foreign Exchange Contract [Member]
Operating revenue
Purchased gas
Other income (expense)
Realized (gains) losses on sale of securities
Debt And Equity Securities Gain Loss Excluding Other Than Temporary Impairment Loss
Income from operations before income tax expense
Income tax expense (benefit)
Income (loss) including noncontrolling interests, net of tax
Unrecognized pension and other postretirement benefit costs, before tax
Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax
Unrecognized pension and other postretirement benefit costs, income tax expense (benefit)
Reclassification From Aoci Current Period Tax
Unrecognized pension and other postretirement benefit costs, net of tax
Fair Value Option Quantitative Disclosures [Table]
Fair Value Option Quantitative Disclosures [Table]
Measurement Frequency
Fair Value By Measurement Frequency [Axis]
Measurement Frequency
Fair Value Measurement Frequency [Domain]
Fair Value, Measurements, Recurring
Fair Value Measurements Recurring [Member]
Fair Value Hierarchy and NAV
Fair Value By Fair Value Hierarchy Level [Axis]
Fair Value Hierarchy and NAV
Fair Value Measurements Fair Value Hierarchy [Domain]
Level 3
Fair Value Inputs Level3 [Member]
Valuation Approach and Technique
Valuation Technique [Axis]
Valuation Approach and Technique
Valuation Technique [Domain]
Discounted Cash Flow [Member]
Income Approach Valuation Technique [Member]
Option Model [Member]
Market Approach Valuation Technique [Member]
Petroleum Reserves
Reserve Quantities By Type Of Reserve [Axis]
Type of Reserve
Type Of Reserve [Domain]
Natural Gas
Natural Gas Reserves [Member]
Energy
Energy [Axis]
Energy
Energy [Domain]
Financial Transmission Rights
FTRs [Member]
Financial Transmission Rights [Member]
Commodity
Physical Options [Member]
Commodity Option [Member]
Statistical Measurement
Range [Axis]
Statistical Measurement
Range [Member]
Minimum
Minimum [Member]
Maximum
Maximum [Member]
Weighted Average
Weighted Average [Member]
Asset Class
Fair Value By Asset Class [Axis]
Asset Class
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain]
Assets
Derivative Financial Instruments Assets [Member]
Liability Class
Fair Value By Liability Class [Axis]
Fair Value by Liability Class
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation By Liability Class [Domain]
Derivative Financial Instruments, Liabilities
Derivative Financial Instruments Liabilities [Member]
Measurement Input Type
Measurement Input Type [Axis]
Measurement Input Type
Measurement Input Type [Domain]
Market Price [Member]
Market Price [Member]
Market Price [Member]
Price Volatility [Member]
Price Volatility [Member]
Price Volatility [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Option Quantitative Disclosures [Line Items]
Fair Value of Derivative Assets
Derivative Assets
Total assets
Assets Fair Value Disclosure
Fair Value of Derivative Liabilities
Derivative Liabilities
Total liabilities
Liabilities Fair Value Disclosure
Fair value inputs, offered quotes for commodity contracts.
Fair value assumptions, expected volatility rate for commodity contracts.
Market Price
Fair Value Inputs Offered Quotes For Commodity Contracts
Price volatility (percentage)
Fair Value Assumptions Expected Volatility Rate For Commodity Contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Level 1
Fair Value Inputs Level1 [Member]
Level 2
Fair Value Inputs Level2 [Member]
Interest rate
Investment Type
Investment Type [Axis]
Investments
Investment Type Categorization [Member]
Equity securities:
Equity Securities [Member]
Fixed Income
Fixed Income Securities [Member]
Cash Equivalents and Other Investment [Member]
Cash equivalents and other
Cash Equivalents And Other Investment [Member]
Geographical
Statement Geographical [Axis]
Geographical
Segment Geographical [Domain]
U.S.
UNITED STATES
Financial Instrument
Financial Instrument [Axis]
Financial Instruments
Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain]
Corporate debt instruments
Corporate Debt Securities [Member]
Government debt securities.
Government Securities
Government Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative Asset
Investments
Investments Fair Value Disclosure
Total assets
Derivative Liabilities
Total Liabilities
Assets measured at fair value using NAV
Alternative Investment
Fair value, net derivative asset (liability) measured on recurring basis, unobservable inputs reconciliation, gain (loss) included in regulatory assets and liabilities.
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Total Gains Losses Realized Unrealized [Abstract]
Operating Revenue
Sales [Member]
Electric Fuel and Other Energy Related Purchases
Electric Fuel and Other Energy-Related Purchases
Electric Fuel And Other Energy Related Purchases [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation Roll Forward
Beginning balance
Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs
Total realized and unrealized gains (losses):
Realized And Unrealized Gains Losses [Abstract]
Included in earnings
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings
Included in regulatory assets/liabilities
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Regulatory Assets And Liabilities
Settlements
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Settlements
Purchases
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Purchases
Transfers out of Level 3
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Out Of Level3
Ending balance
Unrealized gains or losses included in earnings in Level 3 fair value category
Fair Value Assets And Liabilities Measured On Recurring Basis Gain Loss Included In Earnings
Fair Value By Balance Sheet Grouping [Table]
Fair Value By Balance Sheet Grouping [Table]
Measurement Basis
Fair Value By Measurement Basis [Axis]
Fair Value Disclosure Item Amounts [Default]
Portion At Fair Value Fair Value Disclosure [Member]
Fair Value Measurement
Fair Value Disclosure Item Amounts [Domain]
Carrying Amount
Carrying Reported Amount Fair Value Disclosure [Member]
Estimate of Fair Value
Estimate Of Fair Value Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long-term debt
Long Term Debt Fair Value
Junior subordinated notes
Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations
Valuation of certain fair value hedges associated with fixed rate debt
Interest Rate Fair Value Hedge Derivative At Fair Value Net
Offsetting [Abstract]
Offsetting Assets [Table]
Offsetting Assets [Table]
Transaction Type
Transaction Type [Axis]
Transaction
Transaction [Domain]
Over-the-counter
Over The Counter [Member]
Exchange
Exchange Traded [Member]
Offsetting Assets [Line Items]
Offsetting Assets [Line Items]
Gross Assets Presented in the Consolidated Balance Sheet
Derivative Fair Value Of Derivative Asset
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments
Derivative Asset Not Offset Policy Election Deduction
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral Received
Derivative Collateral Obligation To Return Cash
Net Amounts
Derivative Asset Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election
Derivative assets, not subject to a master netting or similar arrangement
Derivative Asset Not Subject To Master Netting Arrangement
Offsetting Liabilities [Table]
Offsetting Liabilities [Table]
Offsetting Liabilities [Line Items]
Offsetting Liabilities [Line Items]
Gross Liabilities Presented in the Consolidated Balance Sheet
Derivative Fair Value Of Derivative Liability
Gross Amounts Not Offset in the Consolidated Balance Sheet, Financial Instruments
Derivative Liability Not Offset Policy Election Deduction
Gross Amounts Not Offset in the Consolidated Balance Sheet, Cash Collateral
Derivative Collateral Right To Reclaim Cash
Net Amounts
Derivative Liability Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election
Derivative liabilities, not subject to a master netting or similar arrangement
Derivative Liability Not Subject To Master Netting Arrangement
Derivative Instrument Detail [Abstract]
Derivative [Table]
Derivative [Table]
Fixed price - natural gas - current derivative contract.
Fixed Price - Natural Gas - Current Derivative Contract
Fixed Price Natural Gas Current Derivative Contract [Member]
Basis - natural gas - current derivative contract.
Basis - Natural Gas - Current Derivative Contract
Basis Natural Gas Current Derivative Contract [Member]
Fixed price - electricity - current derivative contract.
Fixed Price - Electricity - Current Derivative Contract
Fixed Price Electricity Current Derivative Contract [Member]
Financial transmission rights - electricity- current derivative contract.
Financial Transmission Rights - Electricity- Current Derivative Contract
Financial Transmission Rights Electricity Current Derivative Contract [Member]
Liquids - current derivative contract.
Liquids - Current Derivative Contract
Liquids Current Derivative Contract [Member]
Interest rate - current derivative contract.
Interest Rate - Current Derivative Contract
Interest Rate Current Derivative Contract [Member]
Foreign Exchange - Current Derivative Contract [Member]
Foreign Exchange - Current Derivative Contract
Foreign Exchange Current Derivative Contract [Member]
Fixed price - natural gas - non-current derivative contract.
Fixed Price - Natural Gas - Non-current Derivative Contract
Fixed Price Natural Gas Noncurrent Derivative Contract [Member]
Basis - natural gas - non-current derivative contract.
Basis - Natural Gas - Non-current Derivative Contract
Basis Natural Gas Noncurrent Derivative Contract [Member]
Fixed price - electricity - non-current derivative contract.
Fixed Price - Electricity - Non-current Derivative Contract
Fixed Price Electricity Noncurrent Derivative Contract [Member]
Financial Transmission Rights - Electricity- Non-current Derivative Contract [Member]
Financial Transmission Rights - Electricity- Non-current Derivative Contract
Financial Transmission Rights Electricity Noncurrent Derivative Contract [Member]
Liquids - non-current derivative contract.
Liquids - Non-current Derivative Contract
Liquids Noncurrent Derivative Contract [Member]
Interest rate non-current derivative contract.
Interest Rate - Non-current Derivative Contract
Interest Rate Noncurrent Derivative Contract [Member]
Foreign Exchange - Non- Current Derivative Contract [Member]
Foreign Exchange - Non- Current Derivative Contract
Foreign Exchange Non Current Derivative Contract [Member]
Derivative [Line Items]
Derivative [Line Items]
Volume of derivative activity
Derivative Nonmonetary Notional Amount Volume
Volume of electricity
Derivative Nonmonetary Notional Amount Energy Measure
Interest rate / Foreign currency (US Dollars, Euros)
Derivative Notional Amount
Derivative Instruments Gain Loss By Hedging Relationship By Income Statement Location By Derivative Instrument Risk [Table]
Derivative Instruments Gain Loss By Hedging Relationship By Income Statement Location By Derivative Instrument Risk [Table]
Electricity
Electricity [Member]
Natural Gas Liquids
Natural Gas Liquids Reserves [Member]
Derivative Instruments Gain Loss [Line Items]
Derivative Instruments Gain Loss [Line Items]
AOCI After-Tax
Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax
Accumulated change, net of tax, in accumulated gains and losses from instruments designated and qualifying as the effective portion of cash flow hedges that will be reclassified into earnings during the next 12 months.
Commodities, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax
Price Risk Cash Flow Hedge Unrealized Gain Loss To Be Reclassified During Next12 Months
Interest rate, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax
Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net
Foreign currency, Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax
Foreign Currency Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months
Amounts Expected to be Reclassified to Earnings During the Next 12 Months After-Tax
Amount Of Gain Loss Expected To Be Reclassified To Earnings During Next12 Months After Tax
Maximum Term
Maximum Length Of Time Hedged In Cash Flow Hedge1
Derivative instruments designated in fair value hedges
Fair Value Hedges At Fair Value Net
Derivative Instruments And Hedging Activities Disclosures [Table]
Derivative Instruments And Hedging Activities Disclosures [Table]
Hedging Designation
Hedging Designation [Axis]
Hedging Designation
Hedging Designation [Domain]
Designated as Hedging Instrument
Designated As Hedging Instrument [Member]
Hedging Relationship
Derivative Instruments Gain Loss By Hedging Relationship [Axis]
Hedging Relationship
Hedging Relationship [Domain]
Fair Value Hedging
Fair Value Hedging [Member]
Long-term Debt
Long Term Debt [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Carrying Amount of the Hedged Asset (Liability)
Hedged Liability Fair Value Hedge
Cumulative Amount of Fair Value Hedging Adjustments Included in the Carrying Amount of the Hedged Assets (Liabilities)
Hedged Liability Discontinued Fair Value Hedge Cumulative Increase Decrease
Hedged liability discontinued fair value hedge.
Discontinued hedging liability
Hedged Liability Discontinued Fair Value Hedge
Hedging adjustments on discontinued hedging relationships
Deferred Gain Loss On Discontinuation Of Fair Value Hedge
Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table]
Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table]
Fair Value - Derivatives not under Hedge Accounting
Nondesignated [Member]
Derivatives Fair Value [Line Items]
Derivatives Fair Value [Line Items]
Derivative Asset, Current
Derivative Assets Current
Derivative Asset, Noncurrent
Derivative Assets Noncurrent
Derivative Asset
Derivative Liabilities, Current
Derivative Liabilities, Noncurrent
Derivative Liabilities
The increase (decrease) (net) in instruments designated and qualifying as hedging instruments subject to regulatory treatment.
Cash Flow Hedges
Cash Flow Hedging [Member]
Purchased gas.
Purchased Gas
Purchased Gas [Member]
Other Comprehensive Income Location
Other Comprehensive Income Location [Axis]
Other Comprehensive Income Location
Other Comprehensive Income Location [Domain]
Net income discontinued operation.
Net Income from discontinued operations
Net Income Discontinued Operation [Member]
Amount of Gain (Loss) Recognized in AOCI on Derivatives
Unrealized Gain Loss On Cash Flow Hedging Instruments
Amount of Gain (Loss) Reclassified From AOCI to Income
Derivative Instruments Gain Loss Reclassified From Accumulated O C I Into Income Effective Portion Net
Increase (Decrease) in Derivatives Subject to Regulatory Treatment
Increase Decrease In Derivatives Affecting Regulatory Assets And Liabilities
Derivatives Not Designated as Hedging Instruments
Amount of Gain (Loss) Recognized in Income on Derivatives
Derivative Gain Loss On Derivative Net
Schedule Of Equity Method Investments [Table]
Schedule Of Equity Method Investments [Table]
Debt Security Category
Information By Category Of Debt Security [Axis]
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments
Other Than Temporary Impairment Credit Losses Recognized In Earnings Categories Of Investments [Domain]
Trading account asset.
Trading Securities
Trading Account Asset [Member]
Atlantic coast pipeline LLC.
Atlantic Coast Pipeline
Atlantic Coast Pipeline L L C [Member]
Pipelines
Pipelines [Member]
Jointly Owned Utility Plant
Jointly Owned Utility Plant [Axis]
Jointly Owned Utility Plant
Jointly Owned Utility Plant [Domain]
Jointly Owned Natural Gas Pipeline.
Jointly Owned Natural Gas Pipeline
Jointly Owned Natural Gas Pipeline [Member]
Public Utility
Public Utility [Axis]
Utility Plant
Utility Plant [Domain]
Distribution
Gas Distribution [Member]
Investment, Name
Schedule Of Equity Method Investment Equity Method Investee Name [Axis]
Investment, Name
Equity Method Investee Name [Domain]
Pivotal Lng.
Pivotal LNG
Pivotal Lng [Member]
Jax Lng Llc.
JAX LNG LLC
Jax Lng Llc [Member]
Dominion Energy Transmission, Inc.
DETI
Dominion Energy Transmission Inc [Member]
Blue Racer Midstream LLC [Member]
Blue Racer
Blue Racer Midstream Llc [Member]
Partnership Interest
Partnership Interest [Member]
Schedule of Equity Method Investments [Line Items]
Schedule Of Equity Method Investments [Line Items]
Rabbi trust securities
Assets Held In Trust
Equity securities Fv-Ni allowance for credit losses.
Investment Holdings [Table]
Investment Holdings [Table]
Insurance Contracts [Member]
Insurance Contracts
Insurance Contracts [Member]
Related Party
Related Party Transactions By Related Party [Axis]
Related Party
Related Party [Domain]
Common/collective trust funds
Trust For Benefit Of Employees [Member]
Investment Holdings [Line Items]
Investment Holdings [Line Items]
Equity securities Amortized Cost
Equity Securities Fv Ni Cost
Equity securities Total Unrealized Gains
Equity Securities Fv Ni Unrealized Gain
Equity securities Total Unrealized Losses
Equity Securities Fv Ni Unrealized Loss
Equity securities Allowance for Credit Losses
Equity Securities Fv Ni Allowance For Credit Losses
Equity securities Fair Value
Equity Securities Fv Ni
Fixed income securities Amortized Cost, Total
Available For Sale Debt Securities Amortized Cost Basis
Fixed income securities Total Unrealized Gains
Available For Sale Debt Securities Gross Unrealized Gain
Fixed income securities Total Unrealized Losses
Available For Sale Debt Securities Gross Unrealized Loss
Fixed income securities Allowance for Credit Losses
Debt Securities Available For Sale Allowance For Credit Loss
Fixed income securities Fair Value
Available For Sale Securities Debt Securities
Cash equivalents and other carrying value.
Cash equivalents and other allowance for credit losses.
Cash equivalents and other fair value.
Cash equivalents and other Amortized Cost
Cash Equivalents And Other Carrying Value
Cash equivalents and other Allowance for Credit Losses
Cash Equivalents And Other Allowance For Credit Losses
Cash equivalents and other Fair Value
Cash Equivalents And Other Fair Value
Available for sale securities amortized cost basis and other investments.
Amortized Cost, Total
Available For Sale Securities Amortized Cost Basis And Other Investments
Total Unrealized Gains
Decommissioning Trust Securities Unrealized Gains
Total Unrealized Losses
Decommissioning Trust Securities Unrealized Losses
Allowance for Credit Losses, Total
Decommissioning Trust Securities Allowance For Credit Losses
Fair Value, Total
Decommissioning Fund Investments Net
This item represents net assets (liabilities) of pending sales (purchases) of investment securities.
Fair value of securities in an unrealized loss position
Debt Securities Available For Sale Unrealized Loss Position
Net assets related to pending sales and purchases of securities
Net Assets Liabilities Of Pending Sales Purchases Of Investment Securities
Net gains (losses) recognized during the period
Equity Securities Fv Ni Gain Loss
Less: Net (gains) losses recognized during the period on securities sold during the period
Equity Securities Fv Ni Realized Gain Loss
Unrealized gains (losses) recognized during the period on securities still held at March 31, 2020 and 2019
Equity Securities Fv Ni Unrealized Gain Loss
Schedule Of Held To Maturity Securities [Table]
Schedule Of Held To Maturity Securities [Table]
Schedule of Held-to-maturity Securities [Line Items]
Schedule Of Held To Maturity Securities [Line Items]
Due in one year or less
Available For Sale Securities Debt Maturities Within One Year Fair Value
Due after one year through five years
Available For Sale Securities Debt Maturities After One Through Five Years Fair Value
Due after five years through ten years
Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value
Due after ten years
Available For Sale Securities Debt Maturities After Ten Years Fair Value
Total
Debt and equity securities realized gains.
Debt and equity securities realized losses.
Debt Securities Available For Sale [Table]
Debt Securities Available For Sale [Table]
Schedule of Available-for-sale Securities [Line Items]
Schedule Of Available For Sale Securities [Line Items]
Proceeds from sales
Realized gains
Debt And Equity Securities Realized Gains
Realized losses
Debt And Equity Securities Realized Losses
Public Utilities, Length of Pipeline
Duration of contract.
Length of natural gas pipeline (in miles)
Public Utilities Length Of Pipeline
Duration of contract
Duration Of Contract
Percentage equity method interest acquired.
Ownership percentage acquired
Percentage Equity Method Interest Acquired
Cost to acquire equity method investments
Equity Method Investment Aggregate Cost
Percentage of interest held
Contributions to equity method affiliates
Other payables
Estimated cost of project.
Project cost estimates
Estimated Cost Of Project
Additional consideration including interest received from sale of equity method investments.
Additional consideration including interest received in connection with sale
Additional Consideration Including Interest Received From Sale Of Equity Method Investments
Ownership interest percentage of limited partner interests
Limited Liability Company L L C Or Limited Partnership L P Members Or Limited Partners Ownership Interest
Equity in earnings on investments
Distributions received from investment
Equity Method Investment Dividends Or Distributions
Carrying amount of investment that exceeded share of underlying equity
Equity Method Investment Difference Between Carrying Amount And Underlying Equity
Revenue
Other receivables
Schedule Of Property Plant And Equipment [Table]
Schedule Of Property Plant And Equipment [Table]
Wexpro.
Wexpro
Wexpro [Member]
Natural Gas Gathering Systems
Gas Gathering And Processing Equipment [Member]
Colorado, Utah and Wyoming.
Colorado, Utah and Wyoming
Colorado Utah And Wyoming [Member]
Property Plant And Equipment [Line Items]
Property Plant And Equipment [Line Items]
Payments to acquire existing natural gas gathering systems
Payments To Acquire Oil And Gas Equipment
Regulatory Assets And Liabilities Disclosure [Abstract]
Schedule Of Regulatory Assets [Table]
Schedule Of Regulatory Assets [Table]
Regulatory Asset
Regulatory Asset [Axis]
Regulatory Asset
Regulatory Asset [Domain]
Deferred cost of fuel used in electric generation
Regulatory assets not expect to earn return
Deferred Cost Of Fuel Used In Electric Generation [Member]
Deferred project costs and DSM programs for gas utilities.
Deferred project costs and DSM programs for gas utilities
Deferred Project Costs And D S M Programs For Gas Utilities [Member]
Unrecovered Gas Costs.
Unrecovered gas costs
Unrecovered Gas Costs [Member]
Deferred rate adjustment clause costs for Virginia electric utility.
Deferred rate adjustment clause costs for Virginia electric utility
Deferred Rate Adjustment Clause Costs For Virginia Electric Utility [Member]
Deferred nuclear refueling outage costs.
Deferred nuclear refueling outage costs
Deferred Nuclear Refueling Outage Costs [Member]
PJM transmission rates
PJM transmission rates
Pjm Transmission Rates [Member]
Other
Other Regulatory Assets Liabilities [Member]
NND project costs.
NND Project Costs
N N D Project Costs [Member]
Pension and Other Postretirement Benefit Costs
Pension And Other Postretirement Plans Costs [Member]
Deferred project costs for gas utilities.
Deferred project costs for gas utilities
Deferred Project Costs For Gas Utilities [Member]
Interest rate hedges.
Interest rate hedges
Interest Rate Hedges [Member]
AROs and related funding.
AROs and related funding
A R Os And Related Funding [Member]
Cost of reacquired debt.
Cost of reacquired debt
Cost Of Reacquired Debt [Member]
Ash pond and landfill closure costs.
Ash pond and landfill closure costs
Ash Pond And Landfill Closure Costs [Member]
Deferred Project Costs
Deferred Project Costs [Member]
Transmission rate design for allocation of costs of service.
Transmission Rate Design For Allocation Of Costs Of Service
Transmission Rate Design For Allocation Of Costs Of Service [Member]
Deferred rate adjustment clause costs
Deferred rate adjustment clause costs
Deferred Rate Adjustment Clause Costs [Member]
Regulatory Assets [Line Items]
Regulatory Asset [Line Items]
Regulatory assets-current
Regulatory assets-noncurrent
Total regulatory assets
Regulatory Assets
Schedule Of Regulatory Liabilities [Table]
Schedule Of Regulatory Liabilities [Table]
Regulatory Liability
Regulatory Liability [Axis]
Regulatory Liability
Regulatory Liability [Domain]
Provision for future cost of removal and AROs
Asset Retirement Obligation Costs [Member]
Reserve for refunds and rate credits to electric utility customers
Revenue Subject To Refund [Member]
Cost-of-service impact of 2017 Tax Reform Act.
Cost-of-service impact of 2017 Tax Reform Act
Cost Of Service Impact Of2017 Tax Reform Act [Member]
Income taxes refundable through future rates
Deferred Income Tax Charges [Member]
Monetization of guarantee settlement.
Monetization of guarantee settlement
Monetization Of Guarantee Settlement [Member]
Nuclear decommissioning trust
Environmental Restoration Costs [Member]
Overrecovered other postretirement benefit costs.
Overrecovered Other Postretirement Benefit Costs
Overrecovered Other Postretirement Benefit Costs [Member]
Deferred cost of fuel used in electric generation
Provision for future cost of removal.
Provision For Future Cost Of Removal
Provision For Future Cost Of Removal [Member]
Overrecovered gas costs.
Overrecovered Gas Costs
Overrecovered Gas Costs [Member]
Regulatory Liabilities [Line Items]
Regulatory Liabilities [Line Items]
Regulatory liabilities-current
Regulatory liabilities-noncurrent
Total regulatory liabilities
Electric service customers over period.
PJM over period.
Excess deferred taxes adjusted in charge of operating revenue.
Excess deferred taxes adjusted in charge of operating revenue net of tax.
Regulatory assets, amounts expected collection period.
Regulatory assets expected collection period commencing year.
Write off of regulatory asset.
Write off of regulatory asset net of tax.
Excess deferred taxes adjusted in charge of operating revenue
Excess Deferred Taxes Adjusted In Charge Of Operating Revenue
Excess deferred taxes adjusted in charge of operating revenue net of tax
Excess Deferred Taxes Adjusted In Charge Of Operating Revenue Net Of Tax
Amortization period for deferred costs
Regulatory Asset Amortization Period
Duration of payment under settlement agreement
Pjm Over Period
Electric service customers over period
Electric Service Customers Over Period
Write off of regulatory asset
Write Off Of Regulatory Asset
Write off of regulatory asset, after tax
Write Off Of Regulatory Asset Net Of Tax
Weighted average useful life
Debt Instrument Term
Regulatory assets amounts expected collection period
Regulatory Assets Amounts Expected Collection Period
Regulatory assets expected collection period commencing year
Regulatory Assets Expected Collection Period Commencing Year
Public Utilities General Disclosures [Line Items]
Regulatory assets not expect to earn return
Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided
Period for which expenditures are expected to be recovered
Remaining Recovery Period Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided1
Contract With Customer Credits tax reform.
Impact on equity return component of rates charged.
Ohio Regulation.
Ohio Regulation
Ohio Regulation [Member]
Virginia regulation.
Virginia Regulation
Virginia Regulation [Member]
Subsequent Event Type
Subsequent Event Type [Axis]
Subsequent Event Type
Subsequent Event Type [Domain]
Subsequent Event
Subsequent Event [Member]
Solar and onshore wind.
Solar and Onshore Wind
Solar And Onshore Wind [Member]
Utility-scale solar.
Utility-scale Solar
Utility Scale Solar [Member]
Small-scale Solar.
Small-scale Solar
Small Scale Solar [Member]
Energy storage.
Energy Storage
Energy Storage [Member]
Offshore wind facility.
Offshore Wind Facility
Offshore Wind Facility [Member]
Pumped storage.
Pumped Storage
Pumped Storage [Member]
Targeted to reach by end of year one.
Target to Reach by End of 2035
Targeted To Reach By End Of Year One [Member]
Targeted to reach by end of year two.
Target to Reach by End of 2024
Targeted To Reach By End Of Year Two [Member]
Targeted to reach by end of year five.
Target to Reach by End of 2025
Targeted To Reach By End Of Year Five [Member]
Project
Capitalized Costs Of Unproved Properties Excluded From Amortization By Property Or Project [Axis]
Project
Project [Member]
GTSA
Grid Transformation And Security Act [Member]
Solar development project.
Solar Development Project
Solar Development Project [Member]
Public Utilities, Regulatory Proceeding
Public Utilities Regulatory Proceeding [Axis]
Public Utilities, Regulatory Proceeding
Public Utilities Regulatory Proceeding [Domain]
Rider US-3.
Rider US-3
Rider U S3 [Member]
Consolidation Items
Consolidation Items [Axis]
Consolidation Items
Consolidation Items [Domain]
Operating Segments
Operating Segments [Member]
North Carolina regulation.
North Carolina Regulation
North Carolina Regulation [Member]
Annual base fuel revenues.
Annual Base Fuel Revenues
Annual Base Fuel Revenues [Member]
Public Service Company of North Carolina.
PSNC
Public Service Company Of North Carolina [Member]
Pipeline Integrity Tracker
Pipeline Integrity Tracker
Pipeline Integrity Tracker [Member]
Dominion Energy South Carolina, Inc.
Dominion Energy South Carolina Inc
Dominion Energy South Carolina Inc [Member]
South Carolina Regulation.
South Carolina Regulation
South Carolina Regulation [Member]
Category of Item Purchased
Long Term Purchase Commitment By Category Of Item Purchased [Axis]
Long-term Purchase Commitment, Category of Item Purchased
Long Term Purchase Commitment Category Of Item Purchased [Domain]
Pipeline infrastructure replacement program.
Pipeline Infrastructure Replacement Program
Pipeline Infrastructure Replacement Program [Member]
Federal Energy Regulatory Commission
Supply header project.
Supply Header Project
Supply Header Project [Member]
Contract with customer credits tax reform
Contract With Customer Credits Tax Reform
Tax Reform Act's impact on its equity return
Impact On Equity Return Component Of Rates Charged
Percentage of electric energy excluding existing nuclear generation and certain new carbon resources.
Cap amount on revenue reductions in first triennial.
Percentage of electric energy excluding existing nuclear generation and certain new carbon resources
Percentage Of Electric Energy Excluding Existing Nuclear Generation And Certain New Carbon Resources
Cap on revenue reductions in the first triennial
Cap Amount On Revenue Reductions In First Triennial
Power generation, targeted capacity provided by legislation.
Power generation constructed by utility capacity.
Targeted capacity provided by legislation
Power Generation Targeted Capacity Provided By Legislation
Constructed by utility capacity
Power Generation Constructed By Utility Capacity
Percentage of energy efficiency target based on energy savings from previous year baseline.
Energy efficiency target percentage. based on energy savings from 2019 baseline
Percentage Of Energy Efficiency Target Based On Energy Savings From Previous Year Baseline
Public utilities, property, plant and equipment, expected cost of construction.
Public utilities property plant and equipment requested cost of construction.
Estimated cost of project
Public Utilities Property Plant And Equipment Expected Cost Of Construction
Operations and maintenance expenses
Utilities Operating Expense Maintenance
Proposed cost of project
Public Utilities Property Plant And Equipment Requested Cost Of Construction
Approved cost of project
Public Utilities Approved Rate Increase Decrease Amount
Public utilities operating expense estimated fuel expenses recovery.
Public Utilities, Approved Rate, Amount
Solar Capacity Factor
Proposed revenue requirement
Public Utilities Operating Expense Estimated Fuel Expenses Recovery
Solar capacity factor when normalized for force majeure events
Solar Capacity Factor
Approved annual revenue required
Public Utilities Approved Rate Amount
Public utilities operating expense estimated fuel expenses recovered balance.
Proposed revenue requirement recovered balance
Public Utilities Operating Expense Estimated Fuel Expenses Recovered Balance
Increase (decrease) in revenue requirement
Public Utilities Requested Rate Increase Decrease Amount
Application date of public utilities transmission.
Description of the approval date of public utilities projects.
Public utilities, start date of proposed rate in month and year.
Public Utilities, Requested Rate, Amount
Application Date
Application Date Of Public Utilities Transmission
Approval Date
Approval Date Of Public Utilities Projects Description
Rate Year Beginning
Public Utilities Start Date Of Proposed Rate
Total Revenue Requirement (millions)
Public Utilities Requested Rate Amount
Increase (decrease) in revenue requirement
Public utilities actual earned return on equity percentage.
Public utilities authorized return on equity percentage.
Percentage of earned return
Public Utilities Actual Earned Return On Equity Percentage
Authorized return percentage
Public Utilities Authorized Return On Equity Percentage
Return of equity percentage
Public Utilities Requested Return On Equity Percentage
Approved return on equity percentage
Public Utilities Approved Return On Equity Percentage
Total annual revenue requirement
Public utilities annual transportation cost rate adjustment approval request to recover amount.
Annual transportation cost rate adjustment, approval amount requested to recover amount
Public Utilities Annual Transportation Cost Rate Adjustment Approval Request To Recover Amount
Increase decrease in annual base fuel component recoveries.
Increase decrease in annual base fuel component recoveries
Increase Decrease In Annual Base Fuel Component Recoveries
Percentage of pipeline system replaced.
Public utilities cumulative property plant and equipment amount of construction work in process included in rate base.
Percentage of pipeline system replaced
Percentage Of Pipeline System Replaced
Total estimated cost
Public Utilities Property Plant And Equipment Amount Of Construction Work In Process Included In Rate Base
Total cumulative estimated cost
Public Utilities Cumulative Property Plant And Equipment Amount Of Construction Work In Process Included In Rate Base
Public utilities proposed annual cost of service amount.
Annual cost-of-service, amount
Public Utilities Proposed Annual Cost Of Service Amount
Leases.
Schedule of leases.
Schedule Of Leases Disclosure [Table]
Schedule Of Leases Disclosure [Table]
Collaborative Arrangement and Arrangement Other than Collaborative
Type Of Arrangement [Axis]
Collaborative Arrangement and Arrangement Other than Collaborative
Arrangements And Nonarrangement Transactions [Member]
Power purchase arrangement.
Power Purchase Arrangements
Power Purchase Arrangement [Member]
Leases Disclosure [Line Items]
Leases Disclosure [Line Items]
Rental revenue
Operating Lease Lease Income
Depreciation expense
Depreciation
Schedule Of Variable Interest Entities [Table]
Schedule Of Variable Interest Entities [Table]
Variable Interest Entities
Variable Interest Entities By Classification Of Entity [Axis]
Variable Interest Entity, Classification
Classification Of Variable Interest Entity [Domain]
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity Primary Beneficiary [Member]
SBL Holdco [Member]
SBL Holdco
S B L Holdco [Member]
Variable Interest Entity (VIE) or Potential VIE, Information Unavailability
Variable Interest Entity V I E Or Potential V I E Information Unavailability [Member]
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity Not Primary Beneficiary [Member]
Counterparty Name
Counterparty Name [Axis]
Counterparty Name
Repurchase Agreement Counterparty Name [Domain]
Dominion Energy Carolina Gas Services, Inc.
DECGS
Dominion Energy Carolina Gas Services Inc [Member]
Dominion Energy Questar Pipeline Services, Inc.
DEQPS
Dominion Energy Questar Pipeline Services Inc [Member]
DECGS and DEQPS.
DECGS and DEQPS
D E C G S And D E Q P S [Member]
Dominion Energy Services Inc.
DES
Dominion Energy Services Inc [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity [Line Items]
Long term debt
Costs incurred in purchasing electric capacity.
Long Term Capacity Contract Non Utility Generators
This item represents the entity's aggregate generation capacity from long-term power and capacity contracts.
Long term capacity contract non utility generators (generators)
Long Term Capacity Contract Non Utility Generators
Aggregate generation capacity from long-term power and capacity contracts (MW)
Aggregate Generation Capacity From Long Term Power And Capacity Contracts Mw
Payment for electric capacity
Cost Purchased Electric Capacity
Payment for electric energy
Cost Of Goods And Services Sold
Shared Services Purchased
Shared services purchased
Shared Services Purchased
Line Of Credit Facility [Table]
Line Of Credit Facility [Table]
Line of Credit Facility [Line Items]
Line Of Credit Facility [Line Items]
Facility Limit
Line Of Credit Facility Maximum Borrowing Capacity
Outstanding Commercial Paper
Longterm Commercial Paper Current And Noncurrent
Outstanding Letters of Credit
Letters Of Credit Outstanding Amount
Facility Capacity Available
Line Of Credit Facility Remaining Borrowing Capacity
Credit Facility
Credit Facility [Axis]
Credit Facility
Credit Facility [Domain]
Letter of Credit
Letter Of Credit [Member]
Line of Credit
Line Of Credit [Member]
Debt Instrument
Debt Instrument [Axis]
Debt Instrument, Name
Debt Instrument Name [Domain]
Credit facility maturing in June two thousand twenty.
Credit Facility, Maturing in June 2020
Credit Facility Maturing In June Two Thousand Twenty [Member]
364-day Revolving credit facility.
364-day Revolving Credit Facility
Three Sixty Four Day Revolving Credit Facility [Member]
Dominion Energy South Carolina.
DESC
Dominion Energy South Carolina [Member]
Questar Gas Company provides retail natural gas distribution services in Utah, Wyoming and Idaho.
Questar Gas
Questar Gas Company [Member]
South Carolina Generating Company.Inc.
GESC
South Carolina Generating Company Inc [Member]
Dominion Solar Projects Three, Inc.
Dominion Solar Projects III, Inc
Dominion Solar Projects Three Inc [Member]
Credit facilities, maturing in December 2017 with 1 year automatic renewals through 2023.
Credit Facilities, Maturing in December 2017 with 1 year Automatic Renewals through 2023
Credit Facilities Maturing In December2017 With1 Year Automatic Renewals Through2023 [Member]
Credit facilities maturing in May 2018 with 1 year automatic renewals through 2024.
Credit Facilities, Maturing in May 2018 with 1 year Automatic Renewals through 2024
Credit Facilities Maturing In May2018 With1 Year Automatic Renewals Through2024 [Member]
Term Loan Credit Agreement [Member]
Term Loan Credit Agreement
Term Loan Credit Agreement [Member]
Auction Market Preferred Securities, Stock Series
Auction Market Preferred Securities Stock Series [Axis]
Auction Market Preferred Securities, Stock Series, Title
Auction Market Preferred Securities Stock Series Title [Domain]
June Two Zero Zero Six Hybrids [Member]
June 2006 Hybrids
June2006 Hybrids [Member]
September Two Zero Zero Six Hybrids [Member]
September 2006 Hybrids
September2006 Hybrids [Member]
June 2006 and September 2006 hybrids.
June 2006 and September 2006 Hybrids
June Two Zero Zero Six And September Two Zero Zero Six Hybrids [Member]
Floating rate senior notes [member].
Floating rate senior notes
Floating Rate Senior Notes [Member]
Four point seven five percent medium term notes.
4.75% Medium Term Notes
Four Point Seven Five Percent Medium Term Notes [Member]
Four point one two five percent medium term notes.
4.125% Medium Term Notes
Four Point One Two Five Percent Medium Term Notes [Member]
Four point seven five and four point one two five percent medium term notes.
4.75% and 4.125% Medium Term Notes
Four Point Seven Five And Four Point One Two Five Percent Medium Term Notes [Member]
Long-term Debt, Type
Longterm Debt Type [Axis]
Long-term Debt, Type
Longterm Debt Type [Domain]
Senior Notes
Senior Notes [Member]
Senior notes due in two zero two five.
Senior Notes Due in 2025
Senior Notes Due In Two Zero Two Five [Member]
Senior notes due in two zero two seven.
Senior Notes Due in 2027
Senior Notes Due In Two Zero Two Seven [Member]
Senior notes due in two zero three zero.
Senior Notes Due in 2030
Senior Notes Due In Two Zero Three Zero [Member]
Unsecured Junior Subordinated Notes
Junior Subordinated Debt [Member]
Two point five seven nine percentage junior subordinated notes.
2.579% Junior Subordinated Notes
Two Point Five Seven Nine Percentage Junior Subordinated Notes [Member]
Capital Units by Class
Capital Units By Class [Axis]
Capital Unit, Class
Capital Unit Class [Domain]
2019 Corporate Units
Series B Preferred Stock
Series B Preferred Stock [Member]
Sale of Stock
Subsidiary Sale Of Stock [Axis]
Sale of Stock
Sale Of Stock Name Of Transaction [Domain]
Shelf registration for sale of common stock through at the market program.
Shelf Registration for Sale of Common Stock through At-the-market Program
Shelf Registration For Sale Of Common Stock Through At Market Program [Member]
Credit facility, outstanding amount
Line Of Credit
Line of credit facility, termination date
Line Of Credit Facility Expiration Date1
Debt Instrument, Term
Debt instrument maturity month and year.
Short-term indebtedness outstanding
Shortterm Debt Maximum Amount Outstanding During Period
Debt maturity month and year
Debt Instrument Maturity Month And Year
Debt instrument auto renewal term.
Automatic renewal period
Debt Instrument Auto Renewal Term
Debt, amount redeemed
Debt Instrument Repurchase Amount
Expenses related to early redemption of hybrids
Payments Of Debt Extinguishment Costs
Debt Instrument, Maturity Date, Description
Debt Instrument Maturity Date Description
Interest Rate
Debt Instrument Interest Rate Stated Percentage
Debt instrument maturity year.
Total Long-term Debt
Debt Instrument Face Amount
Debt maturity year
Debt Instrument Maturity Year
Debt instrument repurchased and canceled amount
Debt Instrument Repurchased Face Amount
Common units conversion ratio.
Shares of common stock issued in acquisition
Shares of common stock issued in acquisition, value
Common units conversion ratio
Common Units Conversion Ratio
Gain or loss recognized in equity transaction
Debt And Equity Securities Realized Gain Loss
Amount of income taxes recognized in equity primarily attributable to establishing additional regulatory liabilities
Percentage of interest in undivided beneficial ownership.
Percentage of interest in undivided beneficial ownership
Percentage Of Interest In Undivided Beneficial Ownership
Purchase Price Per Share Under Stock Purchase Contract
Purchase price to be paid under stock purchase contracts
Purchase Price Per Share Under Stock Purchase Contract
Shares To Be Issued Under Stock Purchase Contracts
Shares to be issued under purchase contracts
Shares To Be Issued Under Stock Purchase Contracts
Corporate units contract annual rate.
Corporate units present value of stock purchase contract payments.
Stock purchase settlement date.
Schedule Of Capital Units [Table]
Schedule Of Capital Units [Table]
Capital Unit [Line Items]
Capital Unit [Line Items]
Units Issued
Total Net Proceeds
Proceeds From Sale Of Interest In Corporate Unit
Total Preferred Stock
Cumulative Dividend Rate
Preferred Stock Dividend Rate Percentage
Stock Purchase Contract Annual Rate
Corporate Units Contract Annual Rate
Stock Purchase Contract Liability
Corporate Units Present Value Of Stock Purchase Contract Payments
Stock Purchase Contract Settlement Date
Stock Purchase Settlement Date
Recorded dividend.
Corporate units stock purchase contract liability payments.
Issuance costs
Payments Of Stock Issuance Costs
Recorded dividend
Recorded Dividend
Dividends Payable, Amount Per Share
Dividends Payable Amount Per Share
Corporate units stock purchase contract liability payments
Corporate Units Stock Purchase Contract Liability Payments
Preferred stock shares authorized
Preferred Stock Shares Authorized
Issuance of costs
Adjustments To Additional Paid In Capital Stock Issued Issuance Costs
Preferred stock liquidation value
Preferred Stock Liquidation Preference Value
Dividend rate percentage
Dividend stock
Dividends Preferred Stock Stock
Preferred Stock, Redemption Price Per Share
Preferred Stock Redemption Price Per Share
Sale of stock authorized amount.
Sale Of Stock Authorized Amount
Sale Of Stock Authorized Amount
Issuance of common stock (in shares)
Public utilities significant emission rate per year CO2 equivalent.
Loss Contingencies [Table]
Loss Contingencies [Table]
Environmental Remediation Contingency
Environmental Remediation Contingency [Axis]
Environmental Remediation Contingency
Environmental Remediation Contingency [Domain]
Carbon regulations.
Carbon Regulations
Carbon Regulations [Member]
Loss Contingency Nature
Loss Contingencies By Nature Of Contingency [Axis]
Loss Contingency, Nature
Loss Contingency Nature [Domain]
Unfavorable Regulatory Action
Unfavorable Regulatory Action [Member]
Virginia department of environmental quality.
VDEQ
Virginia Department Of Environmental Quality [Member]
Clean water act.
CWA
Clean Water Act [Member]
Environmental protection agency.
EPA
Environmental Protection Agency [Member]
Final rule to revise effluent limitations guidelines for steam electric power generating category.
Final Rule to Revise Effluent Limitations Guidelines for Steam Electric Power Generating Category
Final Rule To Revise Effluent Limitations Guidelines For Steam Electric Power Generating Category [Member]
Waste Management and Remediation.
Waste Management and Remediation
Waste Management And Remediation [Member]
Environmental Remediation Site
Environmental Remediation Site [Axis]
Environmental Remediation Site
Environmental Remediation Site [Domain]
Former gas plant site with post closure groundwater monitoring program.
Former Gas Plant Site With Post Closure Groundwater Monitoring Program
Former Gas Plant Site With Post Closure Groundwater Monitoring Program [Member]
Balance Sheet Location
Balance Sheet Location [Axis]
Balance Sheet Location
Balance Sheet Location [Domain]
Other receivables.
Other Receivables
Other Receivables [Member]
Litigation Case
Litigation Case [Axis]
Litigation Case
Litigation Case Type [Domain]
DESC ratepayer case.
DESC Ratepayer Case
D E S C Ratepayer Case [Member]
SOUTH CAROLINA
SOUTH CAROLINA
DESC.
DESC
D E S C [Member]
Income Tax Authority, Name
Income Tax Authority Name [Axis]
Income Tax Authority, Name
Income Tax Authority Name [Domain]
SCDOR
California Franchise Tax Board [Member]
SCANA and DESC.
SCANA and DESC
S C A N A And D E S C [Member]
Loss Contingencies [Line Items]
Loss Contingencies [Line Items]
Significant emission rate per rear CO2 equivalent
Public Utilities Significant Emission Rate Per Year C O2 Equivalent
Public utilities significant emission rate initial Carbon cap.
Public utilities significant emission Carbon cap reduction percentage.
Public utilities significant emission rate ultimate carbon cap.
Significant emission rate initial carbon cap
Public Utilities Significant Emission Rate Initial Carbon Cap
Significant emission rate carbon cap reduction percentage per year
Public Utilities Significant Emission Carbon Cap Reduction Percentage
Significant emission rate ultimate carbon cap
Public Utilities Significant Emission Rate Ultimate Carbon Cap
Loss contingency number of facilities that may be subject to final regulations.
Public utilities electric generating station facilities heightened entrainment analysis.
Public utilities electric generating station facilities governed under rule water withdrawals levels.
Number of mandatory facility-specific factors
Number of optional facility-specific factors.
Electric generating stations with water withdrawals per day
Public Utilities Electric Generating Station Facilities Governed Under Rule Water Withdrawals Levels
Number of mandatory facility-specific factors
Number Of Mandatory Facility Specific Factors
Number of optional facility-specific factors
Number Of Optional Facility Specific Factors
Electric generating station facilities heightened entrainment analysis per day
Public Utilities Electric Generating Station Facilities Heightened Entrainment Analysis
Number of facilities that may be subject to final regulations
Loss Contingency Number Of Facilities That May Be Subject To Final Regulations
Loss contingency number of separate petitions for reconsideration granted.
Number of separate petitions for reconsideration granted
Loss Contingency Number Of Separate Petitions For Reconsideration Granted
Environmental remediation reserves.
Number of sites with updated work plan.
Increase in environmental expense.
Number of sites remediation work substantially completed.
Number of sites with remediation plans.
Number of additional sites which are not under investigation.
Number of sites remediation work substantially completed
Number Of Sites Remediation Work Substantially Completed
Number of sites with remediation plans
Number Of Sites With Remediation Plans
Environmental remediation reserves
Environmental Remediation Reserves
Number of sites with an updated work plan
Number Of Sites With Updated Work Plan
Updated work plan, cost increase
Increase In Environmental Expense
Number of additional sites which are not under investigation
Number Of Additional Sites Which Are Not Under Investigation
Other expenses, net of tax.
Reserves
Restructuring Reserve Current
Other expense
Other Expenses
Other expense, after tax
Other Expenses Net Of Tax
Insurance receivables
Insurance Settlements Receivable Current
Maximum credit amount in future electric rate relief.
Cash Payment For Settlements
Estimated Proceeds From Sale Of Property Plant And Equipment
Escrow account
Escrow Deposit
Credit in future electric rate relief
Maximum Credit Amount In Future Electric Rate Relief
Cash payment
Cash Payment For Settlements
Proceeds from sale of property
Estimated Proceeds From Sale Of Property Plant And Equipment
Property, plant and equipment, net
Litigation settlement benefit fund.
Litigation settlement, benefit fund
Litigation Settlement Benefit Fund
Shareholder litigation settlement amount through issuance of shares.
Litigation settlement, amount received from SCANA
Litigation Settlement Expense
Litigation settlement amount through stock issuance
Shareholder Litigation Settlement Amount Through Issuance Of Shares
Loss contingency damages sought percentage.
Amount claimed by plaintiffs in legal matter
Loss Contingency Damages Sought Value
Percentage claimed by plaintiffs in legal matter
Loss Contingency Damages Sought Percentage
Proportional share percentage in settlement amount.
Proposed assessment amount from audit
Income Tax Examination Penalties Expense
Proportional share of NND project
Proportional Share Percentage In Settlement Amount
Payment for civil monetary penalty from SCANA
Payments For Legal Settlements
Disgorgement and prejudgment interest total, amount
Litigation Settlement Amount Awarded To Other Party
Contesting amount for filed liens.
Contesting amount for filed liens in Fairfield country
Contesting Amount For Filed Liens
Guarantee obligations maximum potential loss exposure guarantee percentage.
Guarantee obligation.
Schedule Of Guarantee Obligations [Table]
Schedule Of Guarantee Obligations [Table]
Guarantor Obligations, Nature
Guarantee Obligations By Nature [Axis]
Guarantor Obligations, Nature
Guarantee Obligations Nature [Domain]
Financial Guarantee
Financial Guarantee [Member]
Revolving Credit Facility
Revolving Credit Facility [Member]
Equity Method Investee
Equity Method Investee [Member]
Solar [Member]
Solar
Solar [Member]
Other Guarantor Obligations [Member]
Other
Other Guarantor Obligations [Member]
Nuclear Obligations
Nuclear Plant [Member]
Trading Activity
Trading Activity By Type [Axis]
Trading Activity, by Type
Trading Activity By Type [Domain]
Commodity Transactions
Commodity [Member]
Surety Bond
Surety Bond [Member]
Financial Standby Letter of Credit
Financial Standby Letter Of Credit [Member]
Guarantee Obligations [Line Items]
Guarantee Obligations [Line Items]
Debt maximum borrowing capacity
Percentage of ownership interest acquired
Maximum potential loss exposure, guarantee percentage
Guarantee Obligations Maximum Potential Loss Exposure Guarantee Percentage
Guarantee liability
Guarantee Obligation
Guarantee recorded amount
Additional borrowing
Maximum Exposure
Guarantee Obligations Maximum Exposure
Concentration risk credit risk number of counterparties.
Risks And Uncertainties [Abstract]
Concentration Risk and Guarantor Obligations [Line Items]
Concentration Risk and Guarantor Obligations [Table]
Concentration Risk And Guarantor Obligations [Table]
Concentration Risk And Guarantor Obligations [Table]
Concentration Risk Type
Concentration Risk By Type [Axis]
Concentration Risk Type
Concentration Risk Type [Domain]
Credit Concentration Risk
Credit Concentration Risk [Member]
Internal Credit Assessment
Internal Credit Assessment [Axis]
Internal Credit Assessment
Internal Credit Assessment [Domain]
Internal and external credit rating, investment grade.
Investment Grade
Internal And External Credit Rating Investment Grade [Member]
Customer
Major Customers [Axis]
Customer
Name Of Major Customer [Domain]
Wholesale Customers [Member]
Wholesale Customers
Wholesale Customers [Member]
Export customers.
Export Customers
Export Customers [Member]
Largest customer.
Largest Customer
Largest Customer [Member]
Concentration Risk Benchmark
Concentration Risk By Benchmark [Axis]
Concentration Risk Benchmark
Concentration Risk Benchmark [Domain]
Investment grade counterparty.
Investment Grade Counterparty
Investment Grade Counterparty [Member]
Sales Revenue, Net
Sales Revenue Net [Member]
Concentration Risk and Guarantor Obligations [Line Items]
Concentration Risk And Guarantor Obligations [Line Items]
Gross credit exposure
Concentration Risk Credit Risk Financial Instrument Maximum Exposure
Concentration risk, percentage (percentage)
Concentration Risk Percentage1
Number of counterparties
Concentration Risk Credit Risk Number Of Counterparties
Additional collateral to be posted if the credit related contingent features were triggered
Additional Collateral Aggregate Fair Value
Collateral derivatives with credit-related contingent provision in a liability position
Collateral Already Posted Aggregate Fair Value
Aggregate fair value of all derivative instruments with credit contingent provisions that are in a liability position
Derivative Net Liability Position Aggregate Fair Value
Schedule Of Related Party Transactions By Related Party [Table]
Schedule Of Related Party Transactions By Related Party [Table]
Affiliated Entity
Affiliated Entity [Member]
Retirement Plan Type
Retirement Plan Type [Axis]
Retirement Plan Type
Retirement Plan Type [Domain]
Pension Benefits
Pension Plans Defined Benefit [Member]
Medical Coverage for Local retirees
Defined Benefit Postretirement Health Coverage [Member]
Related Party Transaction
Related Party Transaction [Axis]
Related Party Transaction
Related Party Transaction [Domain]
Amounts associated with the Dominion pension plan.
Amounts Associated with the Dominion Pension Plan
Amounts Associated With Dominion Pension Plan [Member]
Amounts associated with the Dominion retiree health and welfare plan.
Amounts Associated with the Dominion Retiree Health and Welfare Plan
Amounts Associated With Dominion Retiree Health And Welfare Plan [Member]
Principal Owner
Principal Owner [Member]
Commodity
Other Deferred Charges and Other Assets
Other Noncurrent Assets [Member]
Billing Status, Type
Accounts Notes Loans And Financing Receivables By Billing Status Type [Axis]
Receivables Billing Status
Receivables Billing Status [Domain]
Unbilled Revenues [Member]
Unbilled Revenues [Member]
Short-term Debt, Type
Short Term Debt Type [Axis]
Short-term Debt, Type
Short Term Debt Type [Domain]
Commercial Paper
Commercial Paper [Member]
East Ohio and DGP.
East Ohio and DGP
East Ohio And D G P [Member]
Intercompany revolving credit agreement.
IRCA
Intercompany Revolving Credit Agreement [Member]
DCP.
DCP
D C P [Member]
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Derivative Asset
Derivative Liabilities
Amounts due to Dominion, noncurrent
Due To Affiliate Noncurrent
Amounts due from Dominion, noncurrent
Due From Affiliate Noncurrent
Commodity purchases from affiliates
Related Party Transaction Purchases From Related Party
Services provided by affiliates
Related Party Transaction Expenses From Transactions With Related Party
Services provided to related parties
Revenue From Related Parties
Services provided by affiliates.
Services provided by affiliates
Services Provided By Affiliates [Member]
Capital expenditures
Related Party Outstanding Borrowing For Non Regulated Subsidiaries
Payable to affiliates
Outstanding borrowings, net of repayments, under money pool for non-regulated subsidiaries
Related Party Outstanding Borrowing For Non Regulated Subsidiaries
Issuance of common stock to Dominion
Gas Imbalances receivable current.
Other receivables
Due From Other Related Parties
Imbalances receivable from affiliates
Gas Imbalances Receivable Current
Imbalances payable to affiliates
Gas Imbalance Payable Current
Other deferred charges and other assets
Other Assets
Interest income
Interest Income Expense Nonoperating Net
Interest charges related to others
Interest Expense Borrowings
Debt Instrument, Face Amount
Schedule Of Defined Benefit Plans Disclosures [Table]
Schedule Of Defined Benefit Plans Disclosures [Table]
Other Postretirement Benefits
Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Disclosure [Line Items]
Service cost
Defined Benefit Plan Service Cost
Interest cost
Defined Benefit Plan Interest Cost
Expected return on plan assets
Defined Benefit Plan Expected Return On Plan Assets
Amortization of prior service credit
Defined Benefit Plan Amortization Of Prior Service Cost Credit
Amortization of net actuarial loss
Defined Benefit Plan Amortization Of Gains Losses
Settlements
Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1
Net periodic benefit cost (credit)
Defined Benefit Plan Net Periodic Benefit Cost
General Discussion Of Pension And Other Postretirement Benefits [Abstract]
Contributions to qualified defined benefit pension plans and OPEB plans
Pension And Other Postretirement Benefit Contributions
Expected contribution defined benefit pension plans and OPEB plans through through VEBAs for the remainder of 2020
Defined Benefit Plan Expected Future Employer Contributions Remainder Of Fiscal Year
Segments
Statement Business Segments [Axis]
Segments
Segment [Domain]
Corporate and Other
Corporate And Other [Member]
Dominion Energy Virginia.
Dominion Energy Virginia
Dominion Energy Virginia [Member]
Contracted Generation.
Contracted Generation
Contracted Generation [Member]
Electric Generation Facilities.
Electric Generation Facilities
Electric Generation Facilities [Member]
Automated meter reading program.
Automated Meter Reading Program
Automated Meter Reading Program [Member]
Virginia legislation.
Virginia Legislation
Virginia Legislation [Member]
After- tax net expenses
Nonoperating Income Expense
Customer refundable fees refund payments after tax.
Asset early retirement expense after tax.
Litigation settlement expense net of tax.
Charge for property, plant and equipment acquired but committed to forgo recovery.
Charge for property, plant and equipment acquired but committed to forgo recovery, after tax.
Business combination acquisition related costs net of tax.
Benefit from revision of environmental remediation expense.
Benefit from revision of environmental remediation expense after tax.
Charge for refund of amounts from customers
Contract With Customer Refund Liability Current
Charge for refund of amounts from customers, after tax
Customer Refundable Fees Refund Payments After Tax
Asset early retirement expense
Asset Retirement Obligation Liabilities Settled
Asset early retirement expense after tax
Asset Early Retirement Expense After Tax
Tax benefit resulting from re-measurement of deferred income taxes as a result of the 2017 Tax Reform Act
Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit
Income tax related to regulatory assets acquired
Deferred Tax Liabilities Regulatory Assets
Litigation settlement expense
Litigation settlement expense, after tax
Litigation Settlement Expense Net Of Tax
Merger and integration-related costs, after tax
Business Combination Acquisition Related Costs Net Of Tax
Charge for property, plant and equipment acquired but committed to forgo recovery
Charge For Property Plant And Equipment Acquired But Committed To Forgo Recovery
Charge for property, plant and equipment acquired but committed to forgo recovery, after tax
Charge For Property Plant And Equipment Acquired But Committed To Forgo Recovery After Tax
Gain loss on investments held in nuclear decommissioning trust funds
Other Comprehensive Income Loss Before Tax
Gain loss on investments held in nuclear decommissioning trust funds, after tax
Benefit from revision of future closure costs
Benefit From Revision Of Environmental Remediation Expense
Benefit from revision of future closure costs, after tax
Benefit From Revision Of Environmental Remediation Expense After Tax
Gas transmission and storage.
Gas, Transmission & Storage
Gas Transmission And Storage [Member]
Dominion Energy South Carolina
Intersegment revenue
Intersegment Elimination [Member]
Adjustments&Eliminations
Material Reconciling Items [Member]
Eliminations
Consolidation Eliminations [Member]
Asset early retirement expense.
Operating revenue recorded charge.
Operating revenue recorded charge after tax.
Asset early retirement expense
Asset Early Retirement Expense
Operating revenue recorded charge
Operating Revenue Recorded Charge
Operating revenue recorded charge, after tax
Operating Revenue Recorded Charge After Tax