XML 137 R103.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Commitments And Contingent Liabilities (Regulatory Proceedings) (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended | 30 Months Ended | 39 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Jun. 30, 2015 | Mar. 31, 2015
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Costs recognized in Operation and Maintenance Expense |  |  | $ 2,978 | $ 3,150 | $ 2,887 |  |
Insured Event, Gain (Loss) |  |  | 28 |  |  |  |
New Jersey Clean Energy Program [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Aggregate funding for New Jersey Clean Energy Program |  |  | 345 |  |  |  |
Superstorm Sandy [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Proceeds from insurance recoveries | $ 55 | $ 159 | 214 |  |  | $ 264 |
PSE&G [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Costs recognized in Operation and Maintenance Expense |  |  | 1,560 | 1,558 | 1,639 |  |
Insured Event, Gain (Loss) |  |  | 0 |  |  |  |
PSE&G [Member] | New Jersey Clean Energy Program [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Aggregate funding for New Jersey Clean Energy Program |  |  | 200 |  |  |  |
PSE&G [Member] | Superstorm Sandy [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Costs recognized in Operation and Maintenance Expense |  |  | (10) |  | 40 |  |
Costs incurred to restore service |  |  |  |  | 295 |  |
Utilities, Costs Incurred to Restore Service portion attributable to insured property |  |  |  |  | 36 |  |
Utilities, Costs Incurred to Repair Infrastructure to Pre-Storm Conditions |  |  |  |  | 5 |  |
Cost recorded as Property, Plant and Equipment |  |  | (11) |  | 75 |  |
Costs recorded as Regulatory Asset |  |  | (20) |  | 180 |  |
Proceeds from insurance recoveries |  |  | 35 |  | 6 |  |
Power [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Costs recognized in Operation and Maintenance Expense |  |  | 1,057 | 1,186 | 1,224 |  |
Insured Event, Gain (Loss) |  |  | 28 |  |  |  |
Power [Member] | Regulatory Agency [Domain] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Loss Contingency, Loss in Period |  |  |  | $ 25 |  |  |
Power [Member] | Superstorm Sandy [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Costs recognized in Operation and Maintenance Expense |  |  | 2 |  |  |  | $ 193
Proceeds from insurance recoveries |  |  | 179 |  | $ 44 |  |
Property, Plant and Equipment [Member] | Power [Member] | Superstorm Sandy [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Insured Event, Gain (Loss) |  |  | 6 |  |  |  |
Operation and Maintenance Expense [Member] | Power [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Insured Event, Gain (Loss) |  |  | 145 |  |  |  |
Other Income [Member] | Power [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Insured Event, Gain (Loss) |  |  | $ 28 |  |  |  |

X
- Definition Proceeds from Insurance Recoveries + References No definition available. + Details
Name: | pseg_ProceedsFromInsuranceRecoveries
Namespace Prefix: | pseg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Public Utilities, Property, Plant and Equipment, Addition from Service Restore + References No definition available. + Details
Name: | pseg_PublicUtilitiesPropertyPlantAndEquipmentAdditionFromServiceRestore
Namespace Prefix: | pseg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Regulatory Assets, Addition for Service Restore + References No definition available. + Details
Name: | pseg_RegulatoryAssetsAdditionForServiceRestore
Namespace Prefix: | pseg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Utilities, Costs Incurred to Restore Service + References No definition available. + Details
Name: | pseg_UtilitiesCostsIncurredToRestoreService
Namespace Prefix: | pseg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Utilities, Costs Incurred to Repair Infrastructure to Pre-Storm Conditions + References No definition available. + Details
Name: | pseg_UtilitiesCostsIncurredtoRepairInfrastructuretoPreStormConditions
Namespace Prefix: | pseg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Utilities, Costs Incurred to Restore Service portion attributable to insured property + References No definition available. + Details
Name: | pseg_UtilitiesCostsIncurredtoRestoreServiceportionattributabletoinsuredproperty
Namespace Prefix: | pseg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The excess or deficiency of insurance recoveries compared to the recorded loss incurred from an insured event (including a conversion of nonmonetary assets to monetary assets). An excess would occur from recovery of lost profits, and recoveries at current replacement cost less carrying amounts of assets that were damaged or destroyed. This element is (1) intended to be used whenever a relevant insurance event concept is needed and (2) moved to the portion of the income statement to correspond to the entity's classification as a component of operating results, nonoperating item, discontinued operations, or extraordinary item. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6397426&loc=d3e17499-108355 + Details
Name: | us-gaap_InsuredEventGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyLossInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of operating expense for routine plant maintenance, repairs and operations of regulated operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(b)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=pseg_NewJerseyCleanEnergyProgramUnfavorableRegulatoryActionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=pseg_SuperstormSandyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=pseg_PseAndGMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=pseg_PowerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_RegulatoryAgencyDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_PropertyPlantAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_OperatingExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_OtherIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |