75000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 75010 - Statement - STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS link:presentationLink link:calculationLink link:definitionLink 75020 - Statement - STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS link:presentationLink link:calculationLink link:definitionLink 75030 - Disclosure - Description of Plan link:presentationLink link:calculationLink link:definitionLink 75040 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 75050 - Disclosure - Plan Interest in Master Trust link:presentationLink link:calculationLink link:definitionLink 75060 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 75070 - Disclosure - Federal Income Tax Status link:presentationLink link:calculationLink link:definitionLink 75080 - Disclosure - Exempt Party-In-Interest Transactions link:presentationLink link:calculationLink link:definitionLink 75090 - Disclosure - Plan Termination link:presentationLink link:calculationLink link:definitionLink 75100 - Disclosure - Proposed Merger link:presentationLink link:calculationLink link:definitionLink 75110 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 75120 - Disclosure - Schedule of Assets (Held at End of Year) link:presentationLink link:calculationLink link:definitionLink 75130 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 75140 - Disclosure - Plan Interest in Master Trust (Tables) link:presentationLink link:calculationLink link:definitionLink 75150 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 75160 - Disclosure - Schedule of Assets (Held at End of Year) (Tables) link:presentationLink link:calculationLink link:definitionLink 75170 - Disclosure - Description of Plan - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75180 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75190 - Disclosure - Plan Interest in Master Trust - Schedule of Net Assets of Master Trust and The Plan's interest in Master Trust (Details) link:presentationLink link:calculationLink link:definitionLink 75200 - Disclosure - Plan Interest in Master Trust - Schedule of Net Assets of Master Trust and The Plan's interest in Master Trust (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 75210 - Disclosure - Plan Interest in Master Trust - Schedule of Net Investment Income (Details) link:presentationLink link:calculationLink link:definitionLink 75220 - Disclosure - Fair Value Measurements - Investments Measured at Fair Value on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 75230 - Disclosure - Federal Income Tax Status - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75240 - Disclosure - Exempt Party-In-Interest Transactions - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75250 - Disclosure - Proposed Merger (Additional Information) (Details) link:presentationLink link:calculationLink link:definitionLink 75260 - Disclosure - Subsequent Events - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 75270 - Disclosure - Schedule of Assets (Held at End of Year) - Schedule of Assets (Details) link:presentationLink link:calculationLink link:definitionLink 75270 - Disclosure - Schedule of Assets (Held at End of Year) - Schedule of Assets (Details) [Default] link:presentationLink link:calculationLink link:definitionLink Receivables for securities sold EBP, Investment Sale, Receivable EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Benefits paid to participants Employee benefit plan, minimum funding employer contribution deferral rate Employee Benefit Plan Minimum Funding Employer Contribution Deferral Rate Employee benefit plan minimum funding employer contribution deferral rate. EBP, Receivable [Abstract] Receivables: Fair Value, Inputs, Level 2 [Member] Level 2 EBP, Related Party and Party-in-Interest Transactions [Line Items] Document Fiscal Period Focus EBP, Employer Contribution, Receivable Employer contributions Employee benefit plan sold Employee Benefit Plan, Common Stock Sold Value Employee benefit plan, common stock sold value. EBP, Master Trust [Line Items] Employee benefit plan, forfeited nonvested account, decrease from employer contribution EBP, Tax Status [Abstract] Employee benefit plan, forfeited nonvested account EBP, Description of Plan [Text Block] Description of Plan EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Interest income on notes receivable from participants Investment, Identifier [Axis] EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Administrative expenses Investments Measured at Net Asset Value. Investments Measured at Net Asset Value [Member] Investments Measured at Net Asset Value EBP, Description of Plan [Line Items] EBP, Master Trust [Abstract] Employee benefit plan, employer contribution, matching percentage EBP, Investment, Issuer Name [Extensible Enumeration] EBP, Investment, Fair Value and NAV [Abstract] LIABILITIES: EBP, Accounting Policy [Line Items] EBP, Change in Net Asset Available for Benefit, Transfer to (from) Plan NET INCREASE IN NET ASSETS BEFORE TRANSFERS PLAN TO PLAN TRANSFER, NET EBP, Master Trust [Table] EBP, Schedule of Asset Held for Investment [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] Employee Benefit Plan Participant Assets Available For Benefit Transfer From External Plan Employee benefit plan participant assets available for benefit transfer from external plan. Employee benefit plan, participants assets transfer from other plans Employee Benefit Plan Participant Assets Available For Benefit Transfer To External Plan Employee benefit plan participant assets available for benefit transfer to external plan. Employee benefit plan, participants assets transfer to other plans EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Employee benefit plan, note receivable from participant, account, maximum borrowing, amount Employee Benefit Plan Change In Net Asset Available For Benefit Increase Decrease Before Transfers Employee benefit plan change in net asset available for benefit increase decrease before transfers. NET INCREASE IN NET ASSETS BEFORE TRANSFERS Common Collective Trust [Member] Common Collective Trust Funds Common Collective Trust Funds [Member] Amendment Flag EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] DEDUCTIONS: Employee benefit plan, note receivable from participant, account, minimum borrowing, amount EBP, Payment to Participant [Policy Text Block] Payment of Benefits Dominion Energy Common Stock [Member] Dominion energy common stock. Dominion Energy Common Stock EBP, Master Trust [Policy Text Block] Investment Income (Loss) EBP, Change in Net Asset Available for Benefit, Increase (Decrease) [Abstract] ADDITIONS: EBP, Participant Contribution, Receivable Participant contributions EBP, Schedule of Asset Held for Investment [Line Items] Fair Value Hierarchy and NAV [Axis] EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Domain] EBP, Investment, Current Value, Type [Extensible Enumeration] Investment Type [Axis] EBP, Investment, Fair Value Investment Total investments Total investments Document Type Entity Central Index Key EBP, Self-Directed Brokerage Account [Member] Self-directed Brokerage Accounts EBP, Forfeited Nonvested Account, Decrease from Administrative Expense Employee benefit plan, forfeited nonvested account, pay administrative expenses Subsequent Event Type [Domain] EBP, Investment [Policy Text Block] Valuation of Investments Employee Benefit Plan Proposed Merger [Line Items] Employee benefit plan proposed merger. EBP, Subsequent Event [Table] EBP, Accounting Policy [Table] EBP, Basis of Accounting [Policy Text Block] Basis of Accounting EBP, Investment, Plan Interest in Master Trust, Fair Value Total investments Plan's interest in the Master Trust (Note 3) Total investments EBP, Description of Plan [Table] Subsequent Event [Member] Subsequent Event EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment, Total Interest and dividends Interest and dividends Payables for securities purchased EBP, Liability for Investment Purchase EBP, Investment, Number of Shares Investment number of shares Minimum [Member] Minimum Employee Benefit Plan incremental percentage for participant contributions Employee Benefit Plan Incremental Percentage For Participant Contributions Employee Benefit Plan incremental percentage for participant contributions. EBP, Related Party and Party-in-Interest Transactions [Text Block] Exempt Party-In-Interest Transactions EBP, Change in Net Asset Available for Benefit, Increase Total additions Employee Benefit Plan Payable Employee benefit plan payable. Payables Payables Fair Value, Inputs, Level 3 [Member] Level 3 Total contributions EBP, Change in Net Asset Available for Benefit, Increase from Contribution EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] Employee Benefit Plan Note Receivable From Participant Account Maximum Repayment Period Employee benefit plan note receivable from participant account maximum repayment period. Employee benefit plan note receivable from participant account maximum repayment period Employee Benefit Plan Right to Receive Share Employee benefit plan right to receive share. Right to receive number of shares EBP, Expense [Policy Text Block] Administrative Expenses Document Information [Line Items] EBP, Statement of Net Asset Available for Benefit [Abstract] Employee Benefit Plan, Maximum Funding Employer Contribution Deferral Rate Employee benefit plan maximum funding employer contribution deferral rate. Employee benefit plan, maximum funding employer contribution deferral rate Employee Benefit Plan Maximum Amount Participant Invest In Stock Percentage Employee benefit plan maximum amount participant invest in stock percentage. Employee benefit plan maximum amount participant invest in stock percentage EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Contributions: EBP, Tax Determination Letter, Date Latest determination letter date EBP, Participant Contribution, Automatic, Deferral Rate Employee benefit plan, participant contribution automatic deferral rate Employee Benefit Plan Provision For Income Taxes Employee benefit plan provision for income taxes. Provision for income taxes EBP, Tax Qualification Status [Extensible Enumeration] EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Ending Balance EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Beginning Balance EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Total Total investments Investments held by the Plan (Note 4) EBP, Use of Estimate [Policy Text Block] Use of Estimates EBP, Risk and Uncertainty, Concentration of Investment at Fair Value to Total Investments, Amount Employee benefit plan, investment amount Mutual Fund [Member] Mutual Fund Entity [Domain] EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Cost investment Employee Benefit Plan Upon Termination Minimum Amount Distributed In Lump Sum Employee benefit plan upon termination minimum amount distributed in lump sum. Employee benefit plan upon termination minimum amount distributed in lump sum Summary of Significant Accounting Policies EBP, Summary of Accounting Policy [Text Block] Employee Benefit Plan Proposed Merger [Abstract] Employee benefit plan proposed merger. EBP, Investment, Fair Value and NAV [Text Block] Fair Value Measurements EBP Short-Term Securities [Member] EBP short-term securities. Short-term Securities [Member] Employee Benefit Plan Employer Contributions Incremental Percentage Employee benefit plan employer contributions incremental percentage. Employee benefit plan employer contributions incremental percentage EBP, Description of Plan and Accounting Change [Abstract] EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution EBP, Statement of Change in Net Asset Available for Benefit [Line Items] Statistical Measurement [Domain] EBP, Note Receivable from Participant Notes receivable from participants Document Period End Date Employee Benefit Plan Change In Net Asset Income From Master Trust Employee benefit plan change in net asset income from master trust. Income from Master Trust Fair Value Hierarchy and NAV [Domain] EBP, Risk and Uncertainty [Policy Text Block] Risks and Uncertainties EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Employee benefit plan, note receivable from participant, account, maximum borrowing, to total account, percentage EBP, Tax Determination Letter, Obtained [true false] EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Plan Termination [Text Block] Plan Termination EBP, Subsequent Event [Text Block] Subsequent Events Cover [Abstract] Investments [Domain] EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Investment Income: Plan Interest in Master Trust EBP, Master Trust [Text Block] EBP, Net Asset Available for Benefit NET ASSETS AVAILABLE FOR BENEFITS End of year Beginning of year Employee Benefit Plan Proposed Merger [Text Block] Employee benefit plan proposed merger. Proposed Merger EBP, Investment, Fair Value and NAV [Table Text Block] Investments Measured at Fair Value on a Recurring Basis EBP, Schedule of Asset Held for Investment [Abstract] Employee Benefit Plan Transfers [Policy Text block] Employee benefit plan transfers. Transfers EBP 001. EBP 001 EBP 001 EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Total investment excluding interest in Master Trust Current Value Employee Benefit Plan Pro Rata Share Aggregate Amount Employee benefit plan pro rata share aggregate amount. Pro Rata share aggregate amount EBP, Note Receivable from Participant [Policy Text Block] Notes Receivable from Participants EBP, Schedule of Asset Held for Investment [Table Text Block] Schedule of Assets EBP, Statement of Net Asset Available for Benefit [Table] Document Fiscal Year Focus EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment, Total Net investment appreciation Net appreciation in fair value of investments Employee Benefits Plan Proposed Merger [Table] Employee benefit plan proposed merger. EBP, Nonconsolidated, Master Trust [Member] Master Trust EBP, Statement of Change in Net Asset Available for Benefit [Table] Employee Benefit Plan Participant Loan Maturity Year Employee benefit plan participant loan maturity year. Employee Benefit Plan Participant Loan Maturity Year Investments Excluding Common Collective Trust [Member] Investments excluding common collective trust. Investments Excluding Common Collective Trust EBP, Asset Total assets Total assets Employee Benefit Plan Maximum Amount Participant Direct Contributions Percentage Employee benefit plan maximum amount participant direct contributions percentage. Employee benefit plan maximum amount participant direct contributions percentage EBP, Plan Number EBP, Nonconsolidated, Plan Interest in Master Trust [Member] Investments held by the Plan EBP, Investment, Fair Value and NAV [Line Items] Document Information [Table] Legal Entity [Axis] Employee Benefit Plan, Short Term Investment Fund Employee benefit plan, short term investment fund. Short-term investment fund ASSETS: Employee Benefit Plan Termination [Table] Employee benefit plan termination. EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment Income from Master Trust Net investment income Subsequent Event Type [Axis] EBP, Investment, Fair Value and NAV [Table] EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Rollover contributions EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] EBP, Asset Held for Investment Total assets (held at end of year) EBP, Subsequent Event [Line Items] Employee Benefit Plan Subsequent Event [Line Items] EBP, Tax Status [Text Block] Federal Income Tax Status EBP, Nonconsolidated, Master Trust and Plan Interest in Master Trust [Axis] Maximum [Member] Maximum Statistical Measurement [Axis] Employee Benefit Plan, Schedule Of Net Investment Income [Table Text Block] Employee benefit plan, schedule of net investment income. Schedule of Net Investment Income EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Employee Benefit Plan Termination [Line Items] Employee benefit plan termination. Employee Benefit Plan Schedule Of Assets [Text Block] Employee benefit plan schedule of assets. Schedule of Assets EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Dividend income Entity Registrant Name EBP, Receivable Receivables Total receivables EBP, Asset Held for Investment, Participant Loan, Interest Rate Employee benefit plan, asset held for investment, participant loan, interest rate EBP, Risk and Uncertainty, Concentration of Investment at Fair Value to Total Investments, Percentage Employee benefit plan, investment percentage EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Employer contributions EBP, Investment Income, Receivable Accrued investment income Employee Benefit Plan Participant Post Tax Contribution Percentage Employee benefit plan participant post tax contribution percentage. Employee benefit plan participant post tax contribution percentage EBP, Related Party and Party-in-Interest [Domain] EBP, Related Party and Party-in-Interest [Axis] EBP, Change in Net Asset Available for Benefit, Decrease Total deductions Employee benefit plan purchased Employee Benefit Plan, Common Stock Purchased Value Employee benefit plan, common stock purchased value. NextEra Energy, Inc. [Member] NextEra Energy, Inc. NextEra Energy, Inc. Employee Benefit Plan, Schedule Of Net Assets [Table Text Block] Employee benefit plan, schedule of net assets. Schedule of Net Assets of Master Trust and Plan's Interest in Master Trust Fair Value, Inputs, Level 1 [Member] Level 1 Short Term Securities [Member] Short term securities. Short Term Securities EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Total Participant contributions Employee Benefit Plan Age Limit Employee benefit plan age limit. Age limit under plan Employee benefit plan participant contribution percentage Employee benefit plan participant contribution percentage. EBP, Tax Status [Line Items] Entity Tax Identification Number NET INCREASE IN NET ASSETS EBP, Change in Net Asset Available for Benefit, Increase (Decrease) EBP, Tax Status [Table] EBP, Asset Held for Investment, Party-in-Interest [true false] Bank Of New York Mellon [Member] Defined benefit plan retirement account. Capital Group [Member] Charles Schwab [Member] Charles Schwab. Defined Benefit Plan Retirement Account [Member] Fidelity Investments. Bank of New York Mellon. Dominion Energy Inc. The Vanguard Group Inc. Dominion Energy Inc [Member] Capital Group. Fidelity Investments [Member] The Vanguard Group Inc [Member]