2.4.0.82408403 - Disclosure - Financing Receivables (Gross And Net Lease Investment) (Detail)truefalseIn Millions, unless otherwise specifiedfalse1false USDfalsefalse$I2013Q2_dei_LegalEntityAxis_pseg_EnergyHoldingsMemberhttp://www.sec.gov/CIK0000788784instant2013-06-30T00:00:000001-01-01T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$I2012Q4_dei_LegalEntityAxis_pseg_EnergyHoldingsMemberhttp://www.sec.gov/CIK0000788784instant2012-12-31T00:00:000001-01-01T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse1false USDtruefalse$I2013Q2_dei_LegalEntityAxis_pseg_EnergyHoldingsMemberhttp://www.sec.gov/CIK0000788784instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseEnergy Holdings [Member]dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldipseg_EnergyHoldingsMemberdei_LegalEntityAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Energy Holdings [Member]2false 4us-gaap_LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureRentalReceivablesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse705000000705USD$falsetruefalse2truefalsefalse721000000721USD$falsetruefalsexbrli:monetaryItemTypemonetaryThis element represents leveraged lease rentals receivable, net of that portion of the rental applicable to principal and interest on the nonrecourse debt.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 30 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7662307&loc=d3e42840-112730 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 43, 44 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Lease Receivables (net of Non-Recourse Debt)3false 4us-gaap_LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureResidualValueOfLeasedAssetsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse529000000529USD$falsefalsefalse2truefalsefalse535000000535USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe estimate of the value of the leased asset at the end of the lease term.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 43 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 30 -Paragraph 14 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7662307&loc=d3e42840-112730 false2Estimated Residual Value of Leased Assets4false 4pseg_LeveragedLeaseRentalReceivablesNetPlusEstimatedResidualValuepseg_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse12340000001234USD$falsefalsefalse2truefalsefalse12560000001256USD$falsefalsefalsexbrli:monetaryItemTypemonetaryLeveraged Lease Rental Receivables Net Plus Estimated Residual ValueNo definition available.true2Total Investment in Rental Receivables5false 4us-gaap_LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureDeferredIncomeus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-409000000-409USD$falsefalsefalse2truefalsefalse-416000000-416USD$falsefalsefalsexbrli:monetaryItemTypemonetaryThe estimated portion of pretax income and investment tax credit remaining to be allocated to income over the lease term.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 43 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 30 -Paragraph 14 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7662307&loc=d3e42840-112730 false2Unearned and Deferred Income6false 4pseg_LeveragedLeasesGrossInvestmentpseg_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse825000000825USD$falsefalsefalse2truefalsefalse840000000840USD$falsefalsefalsexbrli:monetaryItemTypemonetaryLeveraged Leases Gross InvestmentNo definition available.true2Gross Investments in Leases7false 4us-gaap_LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureDeferredTaxesArisingFromLeveragedLeasesus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsetruenegatedLabel1truefalsefalse-687000000-687USD$falsefalsefalse2truefalsefalse-723000000-723USD$falsefalsefalsexbrli:monetaryItemTypemonetaryTaxes arising from arrangements meeting the criteria for classification as leveraged leases due to timing differences between accounting and tax income recognition.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=7662751&loc=d3e45152-112736 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 35 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=7662473&loc=d3e43930-112732 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 43 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Deferred Tax Liabilities8false 4us-gaap_LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureInvestmentInLeveragedLeasesNetus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse138000000138USD$falsetruefalse2truefalsefalse117000000117USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe net investment in arrangements meeting the criteria for classification as leveraged leases including deferred taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 35 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=7662473&loc=d3e43930-112732 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 43 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 30 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=7662307&loc=d3e42840-112730 true2Net Investments in LeasesfalseFinancing Receivables (Gross And Net Lease Investment) (Detail) (Energy Holdings [Member], USD $)MillionsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.pseg.com/role/FinancingReceivablesGrossAndNetLeaseInvestmentDetail28