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v2.4.1.9

Income Taxes (Narrative) (Detail) | 3 Months Ended
--- | ---
Mar. 31, 2015
Income Taxes [Line Items] |
Bonus depreciation for tax purposes | 50.00%pseg_BonusDepreciationForTaxPurposes
Average tax benefits recognition period | 20 years

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- Definition Average Tax Benefits Recognition Period + References No definition available. + Details
Name: | pseg_AverageTaxBenefitsRecognitionPeriod
Namespace Prefix: | pseg_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Bonus Depreciation For Tax Purposes + References No definition available. + Details
Name: | pseg_BonusDepreciationForTaxPurposes
Namespace Prefix: | pseg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | pseg_IncomeTaxesLineItems
Namespace Prefix: | pseg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration