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Consolidated Balance Sheets (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Current Assets    
Cash and cash equivalents $ 275us-gaap_CashAndCashEquivalentsAtCarryingValue $ 318us-gaap_CashAndCashEquivalentsAtCarryingValue [1]
Customer receivables (less allowance for doubtful accounts) 1,589us-gaap_AccountsReceivableNetCurrent 1,514us-gaap_AccountsReceivableNetCurrent [1]
Other receivables (less allowance for doubtful accounts) 113us-gaap_OtherReceivablesNetCurrent 119us-gaap_OtherReceivablesNetCurrent [1]
Inventories 1,227us-gaap_InventoryNet 1,410us-gaap_InventoryNet [1]
Prepayments 163us-gaap_PrepaidExpenseCurrent 167us-gaap_PrepaidExpenseCurrent [1]
Deferred income taxes 673us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent 800us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent [1]
Regulatory assets 362us-gaap_RegulatoryAssetsCurrent [2] 347us-gaap_RegulatoryAssetsCurrent [2]
Other 1,013us-gaap_OtherAssetsCurrent 1,287us-gaap_OtherAssetsCurrent [1]
Total current assets 5,053us-gaap_AssetsCurrent 5,615us-gaap_AssetsCurrent [1]
Investments    
Nuclear decommissioning trust funds 4,244us-gaap_DecommissioningFundInvestments 4,196us-gaap_DecommissioningFundInvestments [1]
Investment in equity method affiliates 1,085us-gaap_EquityMethodInvestments 1,081us-gaap_EquityMethodInvestments [1]
Other 288d_OtherLongTermInvestmentsAndMarketableSecurities 284d_OtherLongTermInvestmentsAndMarketableSecurities [1]
Total investments 5,617us-gaap_LongTermInvestments 5,561us-gaap_LongTermInvestments [1]
Property, Plant and Equipment    
Property, plant and equipment 52,720us-gaap_PropertyPlantAndEquipmentGross 51,406us-gaap_PropertyPlantAndEquipmentGross [1]
Accumulated depreciation, depletion and amortization (15,494)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (15,136)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment [1]
Total property, plant and equipment, net 37,226us-gaap_PropertyPlantAndEquipmentNet 36,270us-gaap_PropertyPlantAndEquipmentNet [1]
Deferred Charges and Other Assets    
Goodwill 3,294us-gaap_Goodwill 3,044us-gaap_Goodwill [1]
Pension and other postretirement benefit assets 979us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent 956us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent [1]
Regulatory assets 1,665us-gaap_RegulatoryAssetsNoncurrent 1,642us-gaap_RegulatoryAssetsNoncurrent [1]
Other 1,322us-gaap_OtherAssetsNoncurrent 1,239us-gaap_OtherAssetsNoncurrent [1]
Total deferred charges and other assets 7,260d_TotalDeferredChargesAndOtherAssets 6,881d_TotalDeferredChargesAndOtherAssets [1]
Total assets 55,156us-gaap_Assets 54,327us-gaap_Assets [1]
Current Liabilities    
Securities due within one year 1,822us-gaap_LongTermDebtCurrent 1,375us-gaap_LongTermDebtCurrent [1]
Short-term debt 3,200us-gaap_ShortTermBorrowings 2,775us-gaap_ShortTermBorrowings [1]
Accounts payable 945us-gaap_AccountsPayableCurrent 952us-gaap_AccountsPayableCurrent [1]
Derivative liabilities 600us-gaap_DerivativeLiabilitiesCurrent 591us-gaap_DerivativeLiabilitiesCurrent [1]
Other 1,454us-gaap_OtherLiabilitiesCurrent 1,505us-gaap_OtherLiabilitiesCurrent [1]
Total current liabilities 8,021us-gaap_LiabilitiesCurrent 7,198us-gaap_LiabilitiesCurrent [1]
Long-Term Debt    
Long-term debt 17,896us-gaap_OtherLongTermDebtNoncurrent 18,348us-gaap_OtherLongTermDebtNoncurrent [1]
Junior subordinated notes 1,373d_SubordinatedDebtLongTermAffiliates 1,374d_SubordinatedDebtLongTermAffiliates [1]
Remarketable subordinated notes 2,084d_RemarketableSubordinatedNotesNoncurrent 2,083d_RemarketableSubordinatedNotesNoncurrent [1]
Total long-term debt 21,353us-gaap_LongTermDebtNoncurrent 21,805us-gaap_LongTermDebtNoncurrent [1]
Deferred Credits and Other Liabilities    
Deferred income taxes and investment tax credits 7,577us-gaap_DeferredTaxLiabilitiesNoncurrent 7,444us-gaap_DeferredTaxLiabilitiesNoncurrent [1]
Asset retirement obligations 1,645us-gaap_AssetRetirementObligationsNoncurrent 1,633us-gaap_AssetRetirementObligationsNoncurrent [1]
Regulatory liabilities 2,119us-gaap_RegulatoryLiabilityNoncurrent 1,991us-gaap_RegulatoryLiabilityNoncurrent [1]
Other 2,025us-gaap_OtherLiabilitiesNoncurrent 2,299us-gaap_OtherLiabilitiesNoncurrent [1]
Total deferred credits and other liabilities 13,366us-gaap_DeferredCreditsAndOtherLiabilities 13,367us-gaap_DeferredCreditsAndOtherLiabilities [1]
Total liabilities 42,740us-gaap_Liabilities 42,370us-gaap_Liabilities [1]
Commitments and Contingencies (see Note 15)       [1]
Equity    
Common stock - no par 6,170us-gaap_CommonStockValue [3] 5,876us-gaap_CommonStockValue [1],[3]
Retained earnings 6,250us-gaap_RetainedEarningsAccumulatedDeficit 6,095us-gaap_RetainedEarningsAccumulatedDeficit [1]
Accumulated other comprehensive loss (409)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax (416)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax [1]
Total common shareholders' equity 12,011us-gaap_StockholdersEquity 11,555us-gaap_StockholdersEquity [1]
Noncontrolling interests 405us-gaap_MinorityInterest 402us-gaap_MinorityInterest [1]
Total equity 12,416us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest 11,957us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest [1]
Total liabilities and equity 55,156us-gaap_LiabilitiesAndStockholdersEquity 54,327us-gaap_LiabilitiesAndStockholdersEquity [1]
Virginia Electric and Power Company    
Current Assets    
Cash and cash equivalents 16us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
15us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Customer receivables (less allowance for doubtful accounts) 1,018us-gaap_AccountsReceivableNetCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
986us-gaap_AccountsReceivableNetCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Other receivables (less allowance for doubtful accounts) 53us-gaap_OtherReceivablesNetCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
65us-gaap_OtherReceivablesNetCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Inventories 768us-gaap_InventoryNet
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
853us-gaap_InventoryNet
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Prepayments 38us-gaap_PrepaidExpenseCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
252us-gaap_PrepaidExpenseCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Regulatory assets 339us-gaap_RegulatoryAssetsCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
298us-gaap_RegulatoryAssetsCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Other 32us-gaap_OtherAssetsCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[5] 82us-gaap_OtherAssetsCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4],[5]
Total current assets 2,264us-gaap_AssetsCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
2,551us-gaap_AssetsCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Investments    
Nuclear decommissioning trust funds 1,950us-gaap_DecommissioningFundInvestments
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
1,930us-gaap_DecommissioningFundInvestments
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Other 4d_OtherLongTermInvestmentsAndMarketableSecurities
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
4d_OtherLongTermInvestmentsAndMarketableSecurities
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Total investments 1,954us-gaap_LongTermInvestments
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
1,934us-gaap_LongTermInvestments
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Property, Plant and Equipment    
Property, plant and equipment 35,684us-gaap_PropertyPlantAndEquipmentGross
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
35,180us-gaap_PropertyPlantAndEquipmentGross
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Accumulated depreciation, depletion and amortization (11,255)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
(11,080)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Total property, plant and equipment, net 24,429us-gaap_PropertyPlantAndEquipmentNet
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
24,100us-gaap_PropertyPlantAndEquipmentNet
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Deferred Charges and Other Assets    
Regulatory assets 464us-gaap_RegulatoryAssetsNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
439us-gaap_RegulatoryAssetsNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Other 525us-gaap_OtherAssetsNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[5] 485us-gaap_OtherAssetsNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4],[5]
Total deferred charges and other assets 989d_TotalDeferredChargesAndOtherAssets
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
924d_TotalDeferredChargesAndOtherAssets
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Total assets 29,636us-gaap_Assets
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
29,509us-gaap_Assets
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Current Liabilities    
Securities due within one year 661us-gaap_LongTermDebtCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
211us-gaap_LongTermDebtCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Short-term debt 1,588us-gaap_ShortTermBorrowings
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
1,361us-gaap_ShortTermBorrowings
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Accounts payable 456us-gaap_AccountsPayableCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
458us-gaap_AccountsPayableCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Payables to affiliates 72us-gaap_DueToRelatedPartiesCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
92us-gaap_DueToRelatedPartiesCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Affiliated current borrowings 10us-gaap_DueToAffiliateCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
427us-gaap_DueToAffiliateCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Accrued interest, payroll and taxes 315us-gaap_AccruedLiabilitiesCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
199us-gaap_AccruedLiabilitiesCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Other 505us-gaap_OtherLiabilitiesCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
528us-gaap_OtherLiabilitiesCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Total current liabilities 3,607us-gaap_LiabilitiesCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
3,276us-gaap_LiabilitiesCurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Long-Term Debt    
Total long-term debt 8,275us-gaap_LongTermDebtNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
8,726us-gaap_LongTermDebtNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Deferred Credits and Other Liabilities    
Deferred income taxes and investment tax credits 4,435us-gaap_DeferredTaxLiabilitiesNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
4,415us-gaap_DeferredTaxLiabilitiesNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Asset retirement obligations 854us-gaap_AssetRetirementObligationsNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
848us-gaap_AssetRetirementObligationsNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Regulatory liabilities 1,769us-gaap_RegulatoryLiabilityNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
1,683us-gaap_RegulatoryLiabilityNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Other 523us-gaap_OtherLiabilitiesNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[5] 506us-gaap_OtherLiabilitiesNoncurrent
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4],[5]
Total deferred credits and other liabilities 7,581us-gaap_DeferredCreditsAndOtherLiabilities
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
7,452us-gaap_DeferredCreditsAndOtherLiabilities
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Total liabilities 19,463us-gaap_Liabilities
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
19,454us-gaap_Liabilities
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Commitments and Contingencies (see Note 15)       [4]
Equity    
Common stock - no par 5,738us-gaap_CommonStockValue
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[6] 5,738us-gaap_CommonStockValue
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4],[6]
Other paid-in capital 1,113us-gaap_AdditionalPaidInCapitalCommonStock
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
1,113us-gaap_AdditionalPaidInCapitalCommonStock
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Retained earnings 3,275us-gaap_RetainedEarningsAccumulatedDeficit
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
3,154us-gaap_RetainedEarningsAccumulatedDeficit
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Accumulated other comprehensive loss 47us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
50us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Total common shareholders' equity 10,173us-gaap_StockholdersEquity
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
10,055us-gaap_StockholdersEquity
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Total liabilities and equity 29,636us-gaap_LiabilitiesAndStockholdersEquity
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
29,509us-gaap_LiabilitiesAndStockholdersEquity
/ dei_LegalEntityAxis
= d_VirginiaElectricAndPowerCompanyMember
[4]
Dominion Gas Holdings, LLC    
Current Assets    
Cash and cash equivalents 19us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
9us-gaap_CashAndCashEquivalentsAtCarryingValue
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Customer receivables (less allowance for doubtful accounts) 350us-gaap_AccountsReceivableNetCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[8] 322us-gaap_AccountsReceivableNetCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7],[8]
Other receivables (less allowance for doubtful accounts) 15us-gaap_OtherReceivablesNetCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
19us-gaap_OtherReceivablesNetCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Affiliated receivables 5us-gaap_DueFromRelatedPartiesCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
12us-gaap_DueFromRelatedPartiesCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Inventories 67us-gaap_InventoryNet
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
65us-gaap_InventoryNet
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Prepayments 64us-gaap_PrepaidExpenseCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
166us-gaap_PrepaidExpenseCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Regulatory assets 16us-gaap_RegulatoryAssetsCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[2] 38us-gaap_RegulatoryAssetsCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[2]
Other 198us-gaap_OtherAssetsCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[8] 217us-gaap_OtherAssetsCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7],[8]
Total current assets 718us-gaap_AssetsCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
810us-gaap_AssetsCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Investments    
Investment in equity method affiliates 103us-gaap_EquityMethodInvestments
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
107us-gaap_EquityMethodInvestments
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
Total investments 104us-gaap_LongTermInvestments
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
108us-gaap_LongTermInvestments
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Property, Plant and Equipment    
Property, plant and equipment 8,993us-gaap_PropertyPlantAndEquipmentGross
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
8,902us-gaap_PropertyPlantAndEquipmentGross
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Accumulated depreciation, depletion and amortization (2,568)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
(2,538)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Total property, plant and equipment, net 6,425us-gaap_PropertyPlantAndEquipmentNet
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
6,364us-gaap_PropertyPlantAndEquipmentNet
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Deferred Charges and Other Assets    
Goodwill 542us-gaap_Goodwill
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
542us-gaap_Goodwill
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Intangible assets, net 83us-gaap_IntangibleAssetsNetExcludingGoodwill
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
79us-gaap_IntangibleAssetsNetExcludingGoodwill
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Regulatory assets 390us-gaap_RegulatoryAssetsNoncurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
379us-gaap_RegulatoryAssetsNoncurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Pension and other postretirement benefit assets 1,516us-gaap_PrepaidPensionCosts
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[8] 1,486us-gaap_PrepaidPensionCosts
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7],[8]
Other 81us-gaap_OtherAssetsNoncurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[8] 80us-gaap_OtherAssetsNoncurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7],[8]
Total deferred charges and other assets 2,612d_TotalDeferredChargesAndOtherAssets
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
2,566d_TotalDeferredChargesAndOtherAssets
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Total assets 9,859us-gaap_Assets
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
9,848us-gaap_Assets
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Current Liabilities    
Short-term debt 280us-gaap_ShortTermBorrowings
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
0us-gaap_ShortTermBorrowings
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Accounts payable 209us-gaap_AccountsPayableCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
247us-gaap_AccountsPayableCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Payables to affiliates 40us-gaap_DueToRelatedPartiesCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
41us-gaap_DueToRelatedPartiesCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Affiliated current borrowings 39us-gaap_DueToAffiliateCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
384us-gaap_DueToAffiliateCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Accrued interest, payroll and taxes 243us-gaap_AccruedLiabilitiesCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
194us-gaap_AccruedLiabilitiesCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Other 163us-gaap_OtherLiabilitiesCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[8] 172us-gaap_OtherLiabilitiesCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7],[8]
Total current liabilities 974us-gaap_LiabilitiesCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
1,038us-gaap_LiabilitiesCurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Long-Term Debt    
Total long-term debt 2,594us-gaap_LongTermDebtNoncurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
2,594us-gaap_LongTermDebtNoncurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Deferred Credits and Other Liabilities    
Deferred income taxes and investment tax credits 2,197us-gaap_DeferredTaxLiabilitiesNoncurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
2,158us-gaap_DeferredTaxLiabilitiesNoncurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Regulatory liabilities 198us-gaap_RegulatoryLiabilityNoncurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[9] 192us-gaap_RegulatoryLiabilityNoncurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[9]
Other 465us-gaap_OtherLiabilitiesNoncurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[8] 492us-gaap_OtherLiabilitiesNoncurrent
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7],[8]
Total deferred credits and other liabilities 2,662us-gaap_DeferredCreditsAndOtherLiabilities
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
2,650us-gaap_DeferredCreditsAndOtherLiabilities
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Total liabilities 6,230us-gaap_Liabilities
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
6,282us-gaap_Liabilities
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Commitments and Contingencies (see Note 15)       [7]
Equity    
Membership interests 3,718us-gaap_MembersCapital
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
3,652us-gaap_MembersCapital
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Accumulated other comprehensive loss (89)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[8] (86)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7],[8]
Total common shareholders' equity 3,629us-gaap_StockholdersEquity
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
3,566us-gaap_StockholdersEquity
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
Total liabilities and equity $ 9,859us-gaap_LiabilitiesAndStockholdersEquity
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
$ 9,848us-gaap_LiabilitiesAndStockholdersEquity
/ dei_LegalEntityAxis
= d_DominionGasHoldingsLLCMember
[7]
[1] Dominion’s Consolidated Balance Sheet at December 31, 2014 has been derived from the audited Consolidated Financial Statements at that date.
[2] Current regulatory assets are presented in other current assets in Dominion's and Dominion Gas' Consolidated Balance Sheets.
[3] 1 billion shares authorized; 589 million shares and 585 million shares outstanding at March 31, 2015 and December 31, 2014, respectively.
[4] Virginia Power’s Consolidated Balance Sheet at December 31, 2014 has been derived from the audited Consolidated Financial Statements at that date.
[5] See Note 17 for amounts attributable to affiliates.
[6] 500,000 shares authorized; 274,723 shares outstanding at March 31, 2015 and December 31, 2014.
[7] Dominion Gas’ Consolidated Balance Sheet at December 31, 2014 has been derived from the audited Consolidated Financial Statements at that date.
[8] See Note 17 for amounts attributable to related parties.
[9] Noncurrent regulatory liabilities are presented in other deferred credits and other liabilities in Dominion Gas' Consolidated Balance Sheets.