Accounts Payable, Current Accounts payable Customer receivables (less allowance for doubtful accounts of $29 and $31) Accrued Liabilities, Current Accrued interest, payroll and taxes Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated depreciation, depletion and amortization AOCI After-Tax Accumulated other comprehensive loss This element may be used to capture disclosure pertaining to acquisitions and dispositions. For acquisitions, description of a business acquisition (or series of individually immaterial business combinations) planned, initiated, or completed during the period, including background, timing, and allocation of acquisition costs. For dispositions, disclosure includes the facts and circumstances leading to the completed or expected disposal, manner and timing of disposal, the gain or loss recognized in the income statement and the income statement caption that includes that gain or loss, and the segment in which the disposal group was reported. Dispositions Additional Collateral to be posted if the credit-risk-related contingent features were triggered Other paid-in capital Adjustment - Other Charges not otherwise defined Rate settlement Other adjustments Adjustments to reconcile net income including noncontrolling interests to net cash provided by operating activities: This item represents the entity's aggregate generation capacity from long-term power and capacity contracts. Aggregate generation capacity from long-term power and capacity contracts (MW) Customer receivables, allowance for doubtful accounts A provision for other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. Other receivables, allowance for doubtful accounts Amendment Flag Potentially dilutive securities not included in the calculation of diluted EPS because the exercise or purchase prices were greater than the average market price of our common shares Impairment of merchant generation facility Downward revision in the nuclear decommissioning ARO, before tax Asset Retirement Obligation, Revision of Estimate, Net of Tax Downward revision in the nuclear decommissioning ARO, after tax Asset retirement obligations Total assets Total assets Assets [Abstract] ASSETS Assets, Current Total current assets Assets, Current [Abstract] Current Assets Assets held for sale Assets held for sale Assets Held-for-sale, Current [Abstract] ASSETS Investments held in our rabbi trusts Total current assets Total current assets Assets of Disposal Group, Including Discontinued Operation, Current [Abstract] Current Assets Available-for-sale securities: Amortized Cost Fair value of securities in an unrealized loss position Due after five years through ten years Due after one year through five years Due after ten years Total Total Due in one year or less Realized gains Realized losses Available-for-sale Securities This item represents the unrealized gain on debt or equity securities categorized neither as held-to-maturity nor trading securities. Total Unrealized Gains This item represents the unrealized losses on debt or equity securities categorized neither as held-to-maturity nor trading securities. Total Unrealized Losses Total Unrealized Losses Bank Time Deposits Basis Basis Capacity Capacity Accrued capital expenditures Capital Lease Obligations Carrying (Reported) Amount, Fair Value Disclosure Cash and cash equivalents Increase (decrease) in cash and cash equivalents Increase (decrease) in cash and cash equivalents Cash classified as held-for-sale in company's consolidated balance sheet. Cash Classified as Held for Sale in Companys Consolidated Balance Sheets Cash classified as held for sale in our Consolidated Balance Sheets Cash classified as held for sale in our Consolidated Balance Sheets 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. Amounts Expected to be Reclassified to Earnings during the next 12 Months After-Tax This element represents the gains (losses) on cash flow hedges included in accumulated other comprehensive income (loss). Cash Flow Hedges Included Accumulated Other Comprehensive Income (Loss) This item represents the entity's hypothetical ceiling test impairment charge that would have been incurred if cash flow hedges had not been considered in calculating the ceiling test limitation in accordance with the full cost method of accounting for gas and oil E&P activities prescribed by the SEC. Ceiling test impairment excluding the effects of hedge-adjusted prices, before tax This item represents the entity's hypothetical ceiling test impairment charge, net of tax, that would have been incurred if cash flow hedges had not been considered in calculating the ceiling test limitation in accordance with the full cost method of accounting for gas and oil E&P activities prescribed by the SEC. Ceiling test impairment excluding the effects of hedge-adjusted prices, after tax Cash Flow Hedging Significant noncash investing and financing activities Categories of Investments, Cost-method Investments Categories of Investments, Marketable Securities, Trading Securities This item represents the entity's ceiling test impairment charge calculated in accordance with the full cost method of accounting for gas and oil E&P activities prescribed by the SEC. Ceiling test impairment charge, before tax This item represents the entity's ceiling test impairment charge calculated in accordance with the full cost method of accounting for gas and oil E&P activities prescribed by the SEC, net of tax. Ceiling test impairment charge, after tax Amount of the increase or decrease in fair value during the period of derivative instruments. Recognized in earnings. Offset changes in fair value to gains on interest rate contract reclassification to earnings, before tax Change in Unrealized Gain (Loss) on Fair Value Nonhedge Instruments After Tax Offset changes in fair value to gains on interest rate contract reclassification to earnings, after tax Collateral already posted Short-term debt Commercial Paper Commitments and Contingencies (see Note 15) Commitments and Contingencies Commodity Contract This item represents the net balance of the entity's commodity derivatives categorized as Level 3 fair value measurements. Commodity derivatives categorized as Level 3 fair value measurements, net asset Commodity Dividends paid per common share Common stock, shares authorized Common stock, shares outstanding Common stock - no par Component of Other Operating Cost and Expense, General [Axis] Component of Other Operating Cost and Expense, Name [Domain] Total comprehensive income attributable to Dominion Total comprehensive income attributable to Dominion Comprehensive Income, Net of Tax, Attributable to Noncontrolling Interest Noncontrolling interests Comprehensive income including noncontrolling interests Comprehensive income including noncontrolling interests Comprehensive Income This element contains information about the components of the entity's comprehensive income. Comprehensive Income Table Concentration Risk by Type [Axis] Gross credit exposure Reflects the maximum amount of loss due to credit risk, after application of collateral, that the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts. Our credit exposure after the application of collateral Credit Risk Concentration of credit risk Concentration Risk Type [Domain] Contract For Sale Of Business, Consideration Amount Agreement to sell Appalachian EP Proceeds from the sale of Appalachian E&P operations Convertible Debt Corporate and Other Corporate and Other Corporate Debt Securities This element contains the carrying amounts and fair values of the entity's financial instruments that are not recorded at fair value. Cost and Fair Value of Financial Instruments Disclosure Costs of purchased power and other energy-related commodities as well as fuel used to generate electricity. Electric fuel and other energy-related purchases Cost-method Investments Payment for electric energy Costs incurred in purchasing electric capacity. Payment for electric capacity Purchased electric capacity Costs incurred for purchased gas. Purchased gas After-tax net (benefits) expenses Total operating expenses Operating Expenses Counterparty, A Counterparty, A Counterparty, B Counterparty, B Credit Rating [Domain] Provides a description of the entities credit risk policy. Credit Risk Policy Current Assets Current Assets Current Derivative Contract Current Derivative Contract Current Fiscal Year End Date Current Liabilities Current Liabilities Current Period Deductible Current Period Deductible This item represents a debt for equity exchange. Debt for equity exchange Debt Instrument [Axis] Conversion rate, shares of common stock per $1,000 principal amount of senior notes, conversion price Conversion rate, shares of common stock per $1,000 principal amount of senior notes Debt instrument, interest rate Debt Instrument Maturity Period Debt maturity Debt Instrument, Name [Domain] Debt Debt Outstanding, Type [Axis] Debt Outstanding, Type [Axis] Debt Outstanding, Type [Domain] Debt Outstanding, Type [Domain] Debt Securities Nuclear decommissioning trust funds Fair Value Deferred Charges, Regulatory Assets, and Other Assets, Noncurrent Deferred Charges, Regulatory Assets, and Other Assets, Noncurrent Total deferred charges and other assets Deferred Charges, Regulatory Assets, and Other Assets, Noncurrent [Abstract] Deferred Charges, Regulatory Assets, and Other Assets, Noncurrent [Abstract] Deferred Charges and Other Assets Deferred income tax expense and the amortization of investment tax credits. Deferred income taxes and amortization of investment tax credits Deferred income taxes and investment tax credits Deferred Tax Liabilities, Noncurrent Deferred income taxes and investment tax credits Amortization of net loss Amortization of net loss Amortization of prior service cost (credit) Contribution to defined benefit pension plans Contribution to employee pension plans Defined Benefit Plan, Curtailments and Settlements Settlements and curtailments Expected return on plan assets Expected return on plan assets Interest cost Net periodic benefit cost (credit) Net periodic benefit cost (credit) Defined Benefit Plans Disclosures, Defined Benefit Plans [Axis] Defined Benefit Plans [Domain] Service cost Special termination benefits Special termination benefits Depreciation, depletion and amortization Depreciation, depletion and amortization (including nuclear fuel) Derivative Asset Designated as Hedging Instrument, Fair Value Fair Value - Derivatives under Hedge Accounting Derivative Asset Not Designated as Hedging Instrument, Fair Value Fair Value - Derivatives not under Hedge Accounting Derivative assets Derivative, by Nature [Axis] Derivative Contract Type [Domain] Derivative Asset, Fair Value Total Fair Value Total Fair Value Total Fair Value Fair value of all dervative instruments not fully collateralized Derivatives and Hedge Accounting Activities Derivative Instruments, Gain (Loss) by Derivative Instrument Risk [Axis] Derivative Instruments, Gain (Loss) by Hedging Relationship [Axis] Schedule that discloses the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. Schedule of the location and amount of gains and losses reported in the statement of financial performance (or when applicable, the statement of financial position, for example, gains and losses initially recognized in other comprehensive income) on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, designated and qualifying as hedging instruments in cash flow hedges, and derivative instruments not designated as hedging instruments. Derivative Instruments Gain (Loss) by Hedging Relationship by Income Statement Location Derivative Instruments, Gain (Loss) by Income Statement Location [Axis] Amount of Gain (Loss) Reclassified from AOCI to Income Amount of Gain (Loss) Recognized in Income on Derivatives Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion) Derivative Instruments Related to Oil and Gas Production Component Domain Derivative Instruments Related to Oil and Gas Production Component Domain Derivative Instruments Related to Oil and Gas Production Components Axis Derivative Instruments Related to Oil and Gas Production Components Axis Derivative liabilities Derivative Liability Designated as Hedging Instrument, Fair Value Fair Value - Derivatives under Hedge Accounting Derivative Liability Not Designated as Hedging Instrument, Fair Value Fair Value - Derivatives not under Hedge Accounting Derivative, Name [Domain] Volume of open derivative positions Derivatives, by Derivative Instrument Contract [Axis] Derivatives, by Derivative Instrument Contract [Axis] Derivatives, by Derivative Instrument Contract [Domain] Derivatives, by Derivative Instrument Contract [Domain] Disclosure - Amounts Outstanding and Capacity Available Under our Credit Facilities [Abstract] Disclosure - Amounts Outstanding and Capacity Available Under our Credit Facilities [Abstract] Disclosure - Assets and Liabilities associated with the Sale of Peoples and Classified as Held for Sale [Abstract] Disclosure - Assets and Liabilities associated with the Sale of Peoples and Classified as Held for Sale [Abstract] Disclosure - Assets and Liabilities that are Measured at Fair Value on a Recurring Basis [Abstract] Disclosure - Assets and Liabilities that are Measured at Fair Value on a Recurring Basis [Abstract] Disclosure - Calculation of our Basic and Diluted EPS [Abstract] Disclosure - Calculation of our Basic and Diluted EPS [Abstract] Disclosure - Ceiling Test - Additional Information [Abstract] Disclosure - Ceiling Test - Additional Information [Abstract] Disclosure - Commitments and Contingencies - Additional Information [Abstract] Disclosure - Commitments and Contingencies - Additional Information [Abstract] Disclosure - Credit Risk - Additional Information [Abstract] Disclosure - Credit Risk - Additional Information [Abstract] Disclosure - Derivatives and Hedge Accounting Activities - Additional Information [Abstract] Disclosure - Derivatives and Hedge Accounting Activities - Additional Information [Abstract] Disclosure - Dispositions - Additional Information [Abstract] Disclosure - Dispositions - Additional Information [Abstract] Disclosure - Earnings Per Share - Additional Information [Abstract] Disclosure - Earnings Per Share - Additional Information [Abstract] Disclosure - Employee Benefit Plans - Additional Information [Abstract] Disclosure - Employee Benefit Plans - Additional Information [Abstract] Disclosure - Fair Value Measurements - Additional Information [Abstract] Disclosure - Fair Value Measurements - Additional Information [Abstract] Disclosure - Fair Value of our Marketable Debt Securities by Contractual Maturity [Abstract] Disclosure - Fair Value of our Marketable Debt Securities by Contractual Maturity [Abstract] Disclosure - Fair Values of our Derivatives [Abstract] Disclosure - Fair Values of our Derivatives [Abstract] Disclosure - Financial Instruments' Carrying Amounts and Fair Values [Abstract] Disclosure - Financial Instruments' Carrying Amounts and Fair Values [Abstract] Disclosure - Gains and Losses Included in Earnings in the Level 3 Fair Value Category [Abstract] Disclosure - Gains and Losses Included in Earnings in the Level 3 Fair Value Category [Abstract] Disclosure - Gains and Losses on our Derivatives in Cash Flow Hedging Relationships [Abstract] Disclosure - Gains and Losses on our Derivatives in Cash Flow Hedging Relationships [Abstract] Disclosure - Gains and Losses on our Derivatives Not Designated as Hedging Instruments [Abstract] Disclosure - Gains and Losses on our Derivatives Not Designated as Hedging Instruments [Abstract] Disclosure - Income Taxes - Additional Information [Abstract] Disclosure - Income Taxes - Additional Information [Abstract] Disclosure - Investments - Additional Information [Abstract] Disclosure - Investments - Additional Information [Abstract] Disclosure - Marketable Equity and Debt Securities and Cash Equivalents (Classified as Available-for-sale) and Cost Method Investments in Decommissioning Trust Funds [Abstract] Disclosure - Marketable Equity and Debt Securities and Cash Equivalents (Classified as Available-for-sale) and Cost Method Investments in Decommissioning Trust Funds [Abstract] Disclosure - Net Change in the Assets and Liabilities Measured at Fair Value on a Recurring Basis and Included in the Level 3 Fair Value Category [Abstract] Disclosure - Net Change in the Assets and Liabilities Measured at Fair Value on a Recurring Basis and Included in the Level 3 Fair Value Category [Abstract] Disclosure - Net Periodic Benefit Cost (Credit) [Abstract] Disclosure - Net Periodic Benefit Cost (Credit) [Abstract] Disclosure - Operating Revenue [Abstract] Disclosure - Operating Revenue [Abstract] Disclosure - Operating Segments - Additional Information [Abstract] Disclosure - Operating Segments - Additional Information [Abstract] Disclosure - Reconciliation of Income Taxes at the U.S. Statutory Federal Rate as compared to the Income Tax Expense recorded in our Consolidated Statements of Income [Abstract] Disclosure - Reconciliation of Income Taxes at the U.S. Statutory Federal Rate as compared to the Income Tax Expense recorded in our Consolidated Statements of Income [Abstract] Disclosure - Recorded Other-Than-Temporary Impairment Losses on Investments [Abstract] Disclosure - Recorded Other-Than-Temporary Impairment Losses on Investments [Abstract] Disclosure - Regulatory Matters - Additional Information [Abstract] Disclosure - Regulatory Matters - Additional Information [Abstract] Disclosure - Segment Information Pertaining to our Operations [Abstract] Disclosure - Segment Information Pertaining to our Operations [Abstract] Disclosure - Selected Information regarding our Marketable Equity and Debt Securities [Abstract] Disclosure - Selected Information regarding our Marketable Equity and Debt Securities [Abstract] Disclosure - Selected Information Regarding the Results of Operations of Peoples [Abstract] Disclosure - Selected Information Regarding the Results of Operations of Peoples [Abstract] Disclosure - Selected Information related to Gains (Losses) on Cash Flow Hedges included in AOCI [Abstract] Disclosure - Selected Information related to Gains (Losses) on Cash Flow Hedges included in AOCI [Abstract] Disclosure - Significant Financing Transactions - Additional Information [Abstract] Disclosure - Significant Financing Transactions - Additional Information [Abstract] Disclosure - Subsidiary Guarantees [Abstract] Disclosure - Subsidiary Guarantees [Abstract]