Income Taxes (Reconciliation Of Reported Income Tax Expense) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net Income	$ 200		$ 390		$ 333		$ 320		$ 224		$ 347		$ 211		$ 493
Net Income																	1,243	1,275	1,503
Income (Loss) on Discontinued Operations, net of tax																	0	0	96
INCOME FROM CONTINUING OPERATIONS																	1,243	1,275	1,407
Total Income Tax																	812	736	977
PSEG [Member]
INCOME FROM CONTINUING OPERATIONS																	1,243	1,275	1,407
Federal																	487	(204)	258
State																	42	(2)	32
Total Current																	529	(206)	290
Federal																	147	758	501
State																	118	125	191
Total Deferred																	265	883	692
Investment tax credit																	18	59	(5)
Total Income Tax																	812	736	977
Pre-Tax Income																	2,055	2,011	2,384
Tax Computed at Statutory Rate @ 35%																	719	704	834
State Income Taxes (net of federal income tax)																	108	115	146
Uncertain Tax Positions																	10	4	19
Manufacturing Deduction																	(9)	0	(15)
Nuclear Decommissioning Trust																	12	10	14
Plant-Related Items																	(14)	(5)	(6)
Tax Credits																	(9)	(10)	(5)
Audit Settlement																	0	(71)	0
Other																	(5)	(11)	(10)
Sub-Total																	93	32	143
Total Income Tax Provision																	812	736	977
Effective income tax rate																	39.50%	36.60%	41.00%
Power [Member]
Net Income	67	[1]	226	[1]	210	[1]	141	[1]	113	[1]	187	[1]	109	[1]	257	[1]
Net Income																	644	666	1,109
Income (Loss) on Discontinued Operations, net of tax																	0	0	96
INCOME FROM CONTINUING OPERATIONS																	644	666	1,013
Federal																	262	30	400
State																	40	51	39
Total Current																	302	81	439
Federal																	69	279	156
State																	35	37	95
Total Deferred																	104	316	251
Investment tax credit																	13	36	0
Total Income Tax																	419	433	690
Pre-Tax Income																	1,063	1,099	1,703
Tax Computed at Statutory Rate @ 35%																	372	385	596
State Income Taxes (net of federal income tax)																	51	55	90
Uncertain Tax Positions																	3	(6)	11
Manufacturing Deduction																	(10)	0	(15)
Nuclear Decommissioning Trust																	12	10	14
Tax Credits																	(2)	(7)	(1)
Audit Settlement																	0	(1)	0
Other																	(7)	(3)	(5)
Sub-Total																	47	48	94
Total Income Tax Provision																	419	433	690
Effective income tax rate																	39.40%	39.40%	40.50%
PSE&G [Member]
Net Income	144		168		121		179		75		155		101		197
Net Income																	612	528	521
Federal																	183	(217)	(225)
State																	0	9	(6)
Total Current																	183	(208)	(231)
Federal																	101	409	483
State																	92	83	92
Total Deferred																	193	492	575
Investment tax credit																	5	23	(4)
Total Income Tax																	381	307	340
Pre-Tax Income																	993	835	861
Tax Computed at Statutory Rate @ 35%																	348	292	301
State Income Taxes (net of federal income tax)																	59	52	56
Uncertain Tax Positions																	0	7	(1)
Plant-Related Items																	(14)	(4)	(6)
Tax Credits																	(6)	(3)	(4)
Audit Settlement																	0	(31)	0
Other																	(6)	(6)	(6)
Sub-Total																	33	15	39
Total Income Tax Provision																	$ 381	$ 307	$ 340
Effective income tax rate																	38.40%	36.80%	39.50%

[1] Power's information has been restated for all periods presented to reflect the transfer of certain of Energy Holdings' equity investments to Power on December 31, 2013. For additional information see Note 1. Organization, Basis of Presentation and Summary of Significant Accounting Policies.