Average Tax Benefits Recognition Period

No definition available.

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- Definition

Bonus Depreciation For Tax Purposes

+ References

No definition available.

+ Details

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- Details

Name:	pseg_IncomeTaxesLineItems
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Period Type:	duration

- Definition

The amount of tax expense resulting from the settlement of an income tax examination

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of the additional liability or refund received or expected based on a final settlement with a taxing authority.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

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- Definition

Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The net amount of all increases and decreases in unrecognized tax benefits for the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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Income Taxes (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended		9 Months Ended	16 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Sep. 09, 2014	Sep. 30, 2014 PSEG [Member]	Dec. 31, 2011 PSEG [Member]
Income Taxes [Line Items]
Income Tax Refund from Settlement with IRS			$ (121)
Reduction of tax expense due to IRS settlement	12
Unrecognized Tax Benefits, Period Decrease	156
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	62
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	$ 94
Bonus depreciation for tax purposes				50.00%	100.00%
Average tax benefits recognition period		20 years