Income Taxes (Reconciliation Of Reported Income Tax Expense) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Line Items]
Net Income	$ 476	$ 444	$ 212	$ 386	$ 200	$ 390	$ 333	$ 320
Net Income									1,518	1,243	1,275
Federal									335	487	(204)
State									58	42	(2)
Total Current									393	529	(206)
Federal									262	147	758
State									260	118	125
Total Deferred									522	265	883
Investment tax credit									23	18	59
Total Income Tax									938	812	736
Pre-Tax Income									2,456	2,055	2,011
Tax Computed at Statutory Rate @ 35%									860	719	704
State Income Taxes (net of federal income tax)									145	108	115
Uncertain Tax Positions									(9)	10	4
Manufacturing Deduction									(16)	(9)	0
Nuclear Decommissioning Trust									14	12	10
Plant-Related Items									(13)	(14)	(5)
Tax Credits									(14)	(9)	(10)
Audit Settlement									(12)	0	(71)
Other									(17)	(5)	(11)
Sub-Total									78	93	32
Total Income Tax Provision									938	812	736
Effective income tax rate									38.20%	39.50%	36.60%
Power [Member]
Income Taxes [Line Items]
Net Income	320	222	54	164	67	226	210	141
Net Income									760	644	666
Federal									231	262	30
State									39	40	51
Total Current									270	302	81
Federal									163	69	279
State									48	35	37
Total Deferred									211	104	316
Investment tax credit									10	13	36
Total Income Tax									491	419	433
Pre-Tax Income									1,251	1,063	1,099
Tax Computed at Statutory Rate @ 35%									438	372	385
State Income Taxes (net of federal income tax)									58	51	55
Uncertain Tax Positions									(8)	3	(6)
Manufacturing Deduction									(16)	(10)	0
Nuclear Decommissioning Trust									15	12	10
Tax Credits									(6)	(2)	(7)
Audit Settlement									(4)	0	(1)
Other									14	(7)	(3)
Sub-Total									53	47	48
Total Income Tax Provision									491	419	433
Effective income tax rate									39.20%	39.40%	39.40%
PSE&G [Member]
Income Taxes [Line Items]
Net Income	160	200	151	214	144	168	121	179
Net Income									725	612	528
Federal									124	183	(217)
State									16	0	9
Total Current									140	183	(208)
Federal									214	101	409
State									84	92	83
Total Deferred									298	193	492
Investment tax credit									11	5	23
Total Income Tax									449	381	307
Pre-Tax Income									1,174	993	835
Tax Computed at Statutory Rate @ 35%									411	348	292
State Income Taxes (net of federal income tax)									65	59	52
Uncertain Tax Positions									0	0	7
Plant-Related Items									(13)	(14)	(4)
Tax Credits									(7)	(6)	(3)
Audit Settlement									1	0	(31)
Other									(8)	(6)	(6)
Sub-Total									38	33	15
Total Income Tax Provision									$ 449	$ 381	$ 307
Effective income tax rate									38.20%	38.40%	36.80%