Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax (Schedule of AOCI) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Comprehensive Income (Loss), Net of Tax	$ 293	$ (51)	$ (181)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(95)	(388)
PSE&G [Member]
Other Comprehensive Income (Loss), Net of Tax	(1)	0	2
Accumulated Other Comprehensive Income (Loss), Net of Tax	1	2
Power [Member]
Other Comprehensive Income (Loss), Net of Tax	265	(52)	(181)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(63)	(328)
Power [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Other Comprehensive Income (Loss), Net of Tax	57
Accumulated Other Comprehensive Income (Loss), Net of Tax	142	85
Power [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Other Comprehensive Income (Loss), Net of Tax	218
Accumulated Other Comprehensive Income (Loss), Net of Tax	(204)	(422)
Power [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Other Comprehensive Income (Loss), Net of Tax	(10)
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (1)	$ 9