Average Tax Benefits Recognition Period

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- Definition

Bonus Depreciation For Tax Purposes

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- Definition

Deferred tax recorded related to health care reform

+ Details

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- Definition

Unrecognized tax benefit potential decrease on settlement with IRS

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- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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- Definition

The amount deducted from an entities' taxes, reflecting a percentage of an amount invested in certain assets spread over the useful life of those assets; includes deferred investment tax credits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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- Definition

The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-SubTopic 340
-Section 50
-Paragraph 1
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- Definition

The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
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-Paragraph 21
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The estimated upper bound of the reasonably possible change in the total amount of the unrecognized tax benefit (that will significantly increase or decrease within twelve months of the balance sheet date) for a tax position taken.

+ 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 (d)
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- Definition

This element provides a description of the nature of the event that could occur within twelve months of the reporting date that would cause a significant increase or decrease in the related unrecognized tax benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
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-Paragraph 21
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- Definition

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

+ References

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-Publisher FASB
-Name FASB Interpretation (FIN)
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Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended	12 Months Ended		15 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2010	Mar. 31, 2010	Jun. 30, 2011 gal years mW	Dec. 31, 2012	Dec. 31, 2010	Dec. 31, 2011	Jun. 30, 2011 PSE&G [Member] Offset to Deferred Tax Related to Health Care Reform [Member]	Jun. 30, 2011 PSE&G [Member]	Jun. 30, 2010 PSE&G [Member]	Jun. 30, 2011 PSE&G [Member]	Jun. 30, 2010 PSE&G [Member]	Dec. 31, 2010 PSE&G [Member]
Reduction in unrecognized tax benefits					95							42
Deferred tax recorded related to health care reform		$ 9
Regulatory assets							78
Bonus depreciation for tax purposes	50.00%			50.00%		100.00%
Average tax benefits recognition period			20
Unrecognized tax benefit increase on settlement with IRS			192
Unrecognized tax benefit decrease on settlement with IRS			303
Increases in unrecognized tax benefits										44
Increase in unrecognized tax benefits reasonably likely to increase or decrease within one year	19				19
Investment tax credit										$ 28
Effective tax rate								41.00%	150.00%	40.70%	37.00%