2.2.0.7 false Assets and Liabilities associated with the Sale of Peoples and Classified as Held for Sale (Detail) (USD $) 142 - Disclosure - Assets and Liabilities associated with the Sale of Peoples and Classified as Held for Sale (Detail) true false In Millions false false 1 USD false false iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 shares Standard http://www.xbrl.org/2003/instance shares 0 $ 6 Current Assets 4 us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 7 Customer receivables 5 us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet us-gaap true debit instant No definition available. false false false false false false false false false false false false 1 true true false false 87000000 87 false false false xbrli:monetaryItemType monetary For the disposal group, including a component of the entity (discontinued operation), the aggregate of amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business and an amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 47 -Subparagraph a false 8 Other 5 us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 56000000 56 false false false xbrli:monetaryItemType monetary For the disposal group, including a component of the entity (discontinued operation), carrying amount of assets not otherwise specified in the taxonomy that are expected to be realized or consumed within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 47 -Subparagraph a false 9 Total current assets 5 us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 143000000 143 false false false xbrli:monetaryItemType monetary The aggregate value (measured at the lower of net carrying value or fair value less cost of disposal) for current assets (assets with expected useful life shorter than one year or one operating cycle, whichever is longer) of a disposal group, including a component of the entity (discontinued operation), to be sold or that has subsequently been disposed of through sale, as of the financial statement date. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 46 true 10 Property, Plant and Equipment 4 d_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNetAbstract d false na duration Disposal Group Including Discontinued Operation, Property Plant And Equipment, Net [Abstract] false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false xbrli:stringItemType string Disposal Group Including Discontinued Operation, Property Plant And Equipment, Net [Abstract] false 11 Property, plant and equipment 5 d_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentGross d false debit instant Disposal Group Including Discontinued Operation, Property Plant And Equipment, Gross false false false false false false false false false false false verboselabel false 1 false true false false 985000000 985 false false false xbrli:monetaryItemType monetary Disposal Group Including Discontinued Operation, Property Plant And Equipment, Gross No authoritative reference available. false 12 Accumulated depreciation, depletion and amortization 5 d_DisposalGroupIncludingDiscontinuedOperationAccumulatedDepreciationDepletionAndAmortization d false credit instant Disposal Group Including Discontinued Operation, Accumulated Depreciation Depletion And Amortization false false false false false false false false false false true negated false 1 false true false false -284000000 -284 false false false xbrli:monetaryItemType monetary Disposal Group Including Discontinued Operation, Accumulated Depreciation Depletion And Amortization No authoritative reference available. false 13 Total property, plant and equipment, net 5 us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNet us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 701000000 701 false false false xbrli:monetaryItemType monetary For the disposal group, including a component of the entity (discontinued operation), carrying value (net of accumulated depreciation and any write-downs) of tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year. Examples include land, buildings, vehicles and production equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 47 -Subparagraph a true 14 Deferred Charges and Other Assets 4 d_DisposalGroupIncludingDiscontinuedOperationDeferredChargesAndOtherAssetsAbstract d false na duration Disposal Group Including Discontinued Operation, Deferred Charges And Other Assets [Abstract] false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false xbrli:stringItemType string Disposal Group Including Discontinued Operation, Deferred Charges And Other Assets [Abstract] false 15 Regulatory assets 5 d_DisposalGroupIncludingDiscontinuedOperationRegulatoryAssets d false debit instant Disposal Group Including Discontinued Operation, Regulatory Assets false false false false false false false false false false false verboselabel false 1 false true false false 125000000 125 false false false xbrli:monetaryItemType monetary Disposal Group Including Discontinued Operation, Regulatory Assets No authoritative reference available. false 16 Other 5 us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 49000000 49 false false false xbrli:monetaryItemType monetary For the disposal group, including a component of the entity (discontinued operation), carrying amount as of the balance sheet date of assets not otherwise specified, and which are expected to be realized or consumed after one year or beyond the normal operating cycle, if longer. For an unclassified balance sheet, represents both current and noncurrent other assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 47 -Subparagraph a false 17 Total deferred charges and other assets 5 d_DisposalGroupIncludingDiscontinuedOperationDeferredChargesAndOtherAssets d false debit instant Disposal Group Including Discontinued Operation, Deferred Charges And Other Assets false false false false false false false false false false false totallabel false 1 false true false false 174000000 174 false false false xbrli:monetaryItemType monetary Disposal Group Including Discontinued Operation, Deferred Charges And Other Assets No authoritative reference available. true 18 Assets held for sale 4 us-gaap_AssetsHeldForSaleCurrent us-gaap true debit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 1018000000 1018 [1] false false false xbrli:monetaryItemType monetary Current assets (normally turning over within one year or one business cycle if longer) that are held for sale apart from normal operations and anticipated to be sold within one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 46 true 19 LIABILITIES 3 d_LiabilitiesOfAssetsHeldForSaleAbstract d false na duration Liabilities Of Assets Held For Sale [Abstract] false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false xbrli:stringItemType string Liabilities Of Assets Held For Sale [Abstract] false 20 Current Liabilities 4 us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 133000000 133 false false false xbrli:monetaryItemType monetary Carrying value as of the balance sheet date of current obligations (due less than one year or one operating cycle, if longer) arising from the sale, disposal or planned sale in the near future (generally within one year) of a disposal group, including a component of the entity (discontinued operation). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 46 false 21 Deferred Credits and Other Liabilities 4 us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrentAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 22 Deferred income taxes and investment tax credits 5 us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 238000000 238 false false false xbrli:monetaryItemType monetary For a disposal group, including a component of the entity (discontinued operation), represents deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A taxable temporary difference is a difference between the tax basis and the carrying amount of a asset or liability in the financial statements prepared in accordance with generally accepted accounting principles. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 47 -Subparagraph a false 23 Other 5 us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 57000000 57 false false false xbrli:monetaryItemType monetary For the disposal group, including a component of the entity (discontinued operation), obligations not otherwise itemized that are due after one year or operating cycle, if longer, from the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 47 -Subparagraph a false 24 Total deferred credits and other liabilities 5 us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 295000000 295 false false false xbrli:monetaryItemType monetary Carrying value of noncurrent obligations (due more than one year or one operating cycle, whichever is longer) relating to the sale, disposal or planned sale in the near future (generally within one year) of a disposal group, including a component of the entity (discontinued operation), as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 46, 47 true 25 Liabilities held for sale 4 us-gaap_LiabilitiesOfAssetsHeldForSale us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 true true false false 428000000 428 [1] false false false xbrli:monetaryItemType monetary Liability (such as a mortgage) related to a disposal group that is held for sale and anticipated to be sold in less than one year. The liability is expected to be discharged as part of the plan of sale for the asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 46 true 1 Dominion's Consolidated Balance Sheet at December 31, 2009 has been derived from the audited Consolidated Financial Statements at that date. 1 20 false Millions UnKnown UnKnown false true