XML 72 R59.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Commitments And Contingent Liabilities (Basic Generation Service (BGS) And Basic Gas Supply Service (BGSS)) (Detail) | 3 Months Ended
--- | ---
Mar. 31, 2015 MW
Long-term Purchase Commitment [Line Items] |  |
Number of cubic feet in gas hedging permitted to be recovered by BPU | 115,000,000,000 pseg_NumberOfCubicFeetInGasHedgingPermittedToBeRecoveredByBpu |
Percentage of residential gas supply permitted to be recovered in gas hedging by BPU | 80.00%pseg_PercentageOfResidentialGasSupplyPermittedToBeRecoveredInGasHedgingByBpu |
Number of cubic feet to be hedged | 70,000,000,000 pseg_NumberOfCubicFeetToBeHedged |
Percentage of annual residential gas supply requirements to be hedged | 50.00%pseg_PercentageOfAnnualResidentialGasSupplyRequirementsToBeHedged |
PSE And G [Member] | Auction Year 2012 [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
36-Month Terms Ending | May 31, 2015 |
Load (MW) | 2,900 pseg_LoadMegawatt / dei_LegalEntityAxis = pseg_PseAndGMember / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = pseg_AuctionYear2012Member |
Dollars Per Megawatt Hour | 83.88 pseg_DollarsPerMegawattHour / dei_LegalEntityAxis = pseg_PseAndGMember / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = pseg_AuctionYear2012Member |
PSE And G [Member] | Auction Year 2013 [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
36-Month Terms Ending | May 31, 2016 |
Load (MW) | 2,800 pseg_LoadMegawatt / dei_LegalEntityAxis = pseg_PseAndGMember / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = pseg_AuctionYear2013MemberDomain |
Dollars Per Megawatt Hour | 92.18 pseg_DollarsPerMegawattHour / dei_LegalEntityAxis = pseg_PseAndGMember / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = pseg_AuctionYear2013MemberDomain |
PSE And G [Member] | Auction Year 2014 [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
Dollars Per Megawatt-Day | 282.04 pseg_DollarsPerMegawattDay / dei_LegalEntityAxis = pseg_PseAndGMember / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = pseg_AuctionYear2014Member |
36-Month Terms Ending | May 31, 2017 |
Load (MW) | 2,800 pseg_LoadMegawatt / dei_LegalEntityAxis = pseg_PseAndGMember / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = pseg_AuctionYear2014Member |
Dollars Per Megawatt Hour | 97.39 pseg_DollarsPerMegawattHour / dei_LegalEntityAxis = pseg_PseAndGMember / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = pseg_AuctionYear2014Member |
PSE And G [Member] | Auction Year 2015 [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
Dollars Per Megawatt-Day | 272.78 pseg_DollarsPerMegawattDay / dei_LegalEntityAxis = pseg_PseAndGMember / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = pseg_AuctionYear2015Member |
36-Month Terms Ending | May 31, 2018 | [1]
Load (MW) | 2,900 pseg_LoadMegawatt / dei_LegalEntityAxis = pseg_PseAndGMember / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = pseg_AuctionYear2015Member |
Dollars Per Megawatt Hour | 99.54 pseg_DollarsPerMegawattHour / dei_LegalEntityAxis = pseg_PseAndGMember / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = pseg_AuctionYear2015Member |
[1] | Prices set for the 2015 BGS auction year will become effective on June 1, 2015 when the 2012 BGS auction agreements expire.

X
- Definition Dollars Per Megawatt-Day + References No definition available. + Details
Name: | pseg_DollarsPerMegawattDay
Namespace Prefix: | pseg_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Dollars Per Megawatt Hour + References No definition available. + Details
Name: | pseg_DollarsPerMegawattHour
Namespace Prefix: | pseg_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Load Megawatt + References No definition available. + Details
Name: | pseg_LoadMegawatt
Namespace Prefix: | pseg_
Data Type: | num:powerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of cubic feet in gas hedging permitted to be recovered by BPU. + References No definition available. + Details
Name: | pseg_NumberOfCubicFeetInGasHedgingPermittedToBeRecoveredByBpu
Namespace Prefix: | pseg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of cubic feet to be hedged + References No definition available. + Details
Name: | pseg_NumberOfCubicFeetToBeHedged
Namespace Prefix: | pseg_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of annual residential gas supply requirements to be hedged + References No definition available. + Details
Name: | pseg_PercentageOfAnnualResidentialGasSupplyRequirementsToBeHedged
Namespace Prefix: | pseg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of residential gas supply permitted to be recovered in gas hedging by BPU. + References No definition available. + Details
Name: | pseg_PercentageOfResidentialGasSupplyPermittedToBeRecoveredInGasHedgingByBpu
Namespace Prefix: | pseg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | us-gaap_LongTermContractForPurchaseOfElectricPowerDateOfContractExpiration
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LongTermPurchaseCommitmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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