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v3.23.1

Financial Risk Management Activities (Schedule Providing Credit Risk From Others, Net Of Collateral) (Detail) $ in Millions | 3 Months Ended
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Mar. 31, 2023 USD ($)
PSEG Power [Member] | Investment Grade - External Rating [Member] |
Derivative [Line Items] |
Percentage Of Credit Exposure | 100.00%
Public Service Electric and Gas Company [Member] |
Derivative [Line Items] |
Current Exposure | $ 26

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- Definition Percentage Of Credit Exposure + References No definition available. + Details
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Namespace Prefix: | pseg_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Total credit exposure with counterparties + References No definition available. + Details
Name: | pseg_TotalCreditExposureWithCounterparties
Namespace Prefix: | pseg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- 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_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=pseg_InvestmentGradeExternalRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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