XML 124 R90.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Trust Investments (Fair Value Of Rabbi Trust) (Detail) - Rabbi Trust [Member] - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Schedule of Trust Investments [Line Items] |  |
Total Rabbi Trust Investments | $ 224 | $ 231
Power [Member] |  |
Schedule of Trust Investments [Line Items] |  |
Total Rabbi Trust Investments | 56 | 57
PSE&G [Member] |  |
Schedule of Trust Investments [Line Items] |  |
Total Rabbi Trust Investments | 45 | 46
Other [Member] |  |
Schedule of Trust Investments [Line Items] |  |
Total Rabbi Trust Investments | $ 123 | $ 128

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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