Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net Income	$ 1,275	$ 1,503	$ 1,564
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit for the years ended 2012, 2011 and 2010, respectively	19	(39)	6
Change in Fair Value of Derivative Instruments, net of tax (expense) benefit for the years ended 2012, 2011 and 2010, respectively	17	47	60
Reclassification Adjustments for Net Amounts included in Net Income, net of tax (expense) benefit for the years ended 2012, 2011 and 2010, respectively	(41)	(127)	(129)
Pension/OPEB adjustment, net of tax (expense) benefit for the years ended 2012, 2011 and 2010, respectively	(46)	(62)	23
Other Comprehensive Income (Loss), net of tax	(51)	(181)	(40)
Comprehensive Income	1,224	1,322	1,524
Power [Member]
Net Income	647	1,098	1,143
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit for the years ended 2012, 2011 and 2010, respectively	18	(42)	15
Change in Fair Value of Derivative Instruments, net of tax (expense) benefit for the years ended 2012, 2011 and 2010, respectively	17	47	60
Reclassification Adjustments for Net Amounts included in Net Income, net of tax (expense) benefit for the years ended 2012, 2011 and 2010, respectively	(41)	(127)	(129)
Pension/OPEB adjustment, net of tax (expense) benefit for the years ended 2012, 2011 and 2010, respectively	(46)	(59)	21
Other, net of tax (expense) benefit for the year ended 2010	0	0	(1)
Other Comprehensive Income (Loss), net of tax	(52)	(181)	(34)
Comprehensive Income	595	917	1,109
PSE&G [Member]
Net Income	528	521	359
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit for the years ended 2012, 2011 and 2010, respectively	0	2	(5)
Other Comprehensive Income (Loss), net of tax	0	2	(5)
Comprehensive Income	$ 528	$ 523	$ 354