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Income Taxes (Schedule Of Effective Tax Rates) (Detail)	3 Months Ended		9 Months Ended
Income Taxes (Schedule Of Effective Tax Rates) (Detail)	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
PSEG [Member]
Effective tax rate	41.00%	43.10%	36.30%	42.00%
Power [Member]
Effective tax rate	42.40%	40.70%	41.00%	41.00%
PSE And G [Member]
Effective tax rate	39.90%	40.10%	35.40%	40.50%

- 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.

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