XML 136 R103.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Commitments And Contingent Liabilities (Basic Generation Service (BGS) And Basic Gas Supply Service (BGSS)) (Detail) cf in Billions | 12 Months Ended
--- | ---
Dec. 31, 2016 cf $ / mwd $ / mwh MW
Long-term Purchase Commitment [Line Items] |  |
Number of cubic feet in gas hedging permitted to be recovered by BPU | cf | 115 |
Percentage of residential gas supply permitted to be recovered in gas hedging by BPU | 80.00% |
Percentage of annual residential gas supply requirements to be hedged | 50.00% |
Number of cubic feet to be hedged | cf | 70 |
PSE&G [Member] | Auction Year 2014 [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
36-Month Terms Ending | May 31, 2017 |
Load (MW) | MW | 2,800 |
Dollars Per Megawatt Hour | $ / mwh | 97.39 |
PSE&G [Member] | Auction Year 2015 [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
36-Month Terms Ending | May 31, 2018 |
Load (MW) | MW | 2,900 |
Dollars Per Megawatt Hour | $ / mwh | 99.54 |
PSE&G [Member] | Auction Year 2016 [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
36-Month Terms Ending | May 31, 2019 |
Load (MW) | MW | 2,800 |
$ per kWh | $ / mwd | 335.33 |
Dollars Per Megawatt Hour | $ / mwh | 96.38 |
PSE&G [Member] | Auction Year 2017 [Member] |  |
Long-term Purchase Commitment [Line Items] |  |
36-Month Terms Ending | May 31, 2020 | [1]
Load (MW) | MW | 2,800 |
$ per kWh | $ / mwd | 276.83 |
Dollars Per Megawatt Hour | $ / mwh | 90.78 |
[1] | Prices set in the 2017 BGS auction will become effective on June 1, 2017 when the 2014 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 Date of contract expiration of long-term contract to purchase electricity from a production plant, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 10.D) -URI http://asc.fasb.org/extlink&oid=6499423&loc=d3e659339-123030 + Details
Name: | us-gaap_LongTermContractForPurchaseOfElectricPowerDateOfContractExpiration
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
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_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: |

X
- Details
Name: | us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=pseg_AuctionYear2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=pseg_AuctionYear2015Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=pseg_AuctionYear2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=pseg_AuctionYear2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |