XML 94 R72.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Commitments And Contingent Liabilities (Minimum Fuel Purchase Requirements) (Detail) - Power [Member] $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2018 USD ($)
Long-term Purchase Commitment [Line Items] |
Coverage percentage of nuclear fuel commitments of uranium, enrichment, and fabrication requirements | 100.00%
Nuclear Fuel Uranium [Member] |
Long-term Purchase Commitment [Line Items] |
Total five-year minimum purchase requirements | $ 227
Nuclear Fuel Enrichment [Member] |
Long-term Purchase Commitment [Line Items] |
Total five-year minimum purchase requirements | 312
Nuclear Fuel Fabrication [Member] |
Long-term Purchase Commitment [Line Items] |
Total five-year minimum purchase requirements | 158
Natural Gas [Member] |
Long-term Purchase Commitment [Line Items] |
Total five-year minimum purchase requirements | 922
Coal [Member] |
Long-term Purchase Commitment [Line Items] |
Total five-year minimum purchase requirements | $ 240

X
- Definition Coverage percentage of nuclear fuel commitments of uranium, enrichment, and fabrication requirements. + References No definition available. + Details
Name: | pseg_CoveragePercentageOfNuclearFuelCommitmentsOfUraniumEnrichmentAndFabricationRequirements
Namespace Prefix: | pseg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. + References No definition available. + Details
Name: | us-gaap_LongTermPurchaseCommitmentAmount
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_LongTermPurchaseCommitmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

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

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

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

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