Schedule Of Consolidated Debt (Long-Term Debt Maturities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Debt Instrument [Line Items]
2013	$ 1,252
2014	782
2015	876
2016	731
2017	1
Thereafter	4,281
Total	7,923
Power [Member]
Debt Instrument [Line Items]
2013	300
2014	44
2015	300
2016	553
2017	0
Thereafter	1,156
Total	2,353		2,767
PSE&G [Member]
Debt Instrument [Line Items]
2013	725
2014	500
2015	300
2016	171
2017	0
Thereafter	3,108
Total	4,804		4,277
Energy Holdings [Member]
Debt Instrument [Line Items]
Total	44		95
Transition Funding [Member] | PSE&G [Member]
Debt Instrument [Line Items]
2013	214
2014	225
2015	251
2016	0
2017	0
Thereafter	0
Total	690	[1]	895	[1]
Transition Funding II [Member] | PSE&G [Member]
Debt Instrument [Line Items]
2013	12
2014	12
2015	8
2016	0
2017	0
Thereafter	0
Total	32	[1]	44	[1]
Project Level, Non-Recourse Debt [Member] | Energy Holdings [Member]
Debt Instrument [Line Items]
2013	1
2014	1
2015	17
2016	7
2017	1
Thereafter	17
Total	$ 44	[2]	$ 95	[2]

[1] The debt fair valuation is based on the present value of each bond’s future cash flows. The discount rates used in the present value analysis are based on an estimate of new issue bond yields across the treasury curve. When a bond has embedded options, an interest rate model is used to reflect the impact of interest rate volatility into the analysis (primarily Level 2 measurements).

[2] Fair value amounts as of December 31, 2011 include $50 million of non-recourse project debt related to Dynegy which is classified as a Level 3 measurement. As of the June 5, 2012, the effective date of the amended settlement agreement, the $50 million of Notes Payable was written off. See the Fair Value Option Section of Note 17. Fair Value Measurements for additional information. Non-recourse project debt of $44 million is valued as equivalent to the amortized cost and is classified as a Level 3 measurement.