Income Taxes (Reconciliation Of Reported Income Tax Expense) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Line Items]
Net Income	$ 309	$ 439	$ 345	$ 586	$ 476	$ 444	$ 212	$ 386
Net Income									$ 1,679	$ 1,518	$ 1,243
Federal									243	335	487
State									85	58	42
Total Current									328	393	529
Federal									540	262	147
State									104	260	118
Total Deferred									644	522	265
Investment tax credit									29	23	18
Total Income Tax									1,001	938	812
Pre-Tax Income									2,680	2,456	2,055
Tax Computed at Statutory Rate @ 35%									938	860	719
State Income Taxes (net of federal income tax)									129	145	108
Uncertain Tax Positions									7	(9)	10
Manufacturing Deduction									(10)	(16)	(9)
Nuclear Decommissioning Trust									7	14	12
Plant-Related Items									(20)	(13)	(14)
Tax Credits									(13)	(14)	(9)
Audit Settlement									0	(12)	0
Nuclear Decommissiong Tax Carryback									(33)	0	0
Other									(4)	(17)	(5)
Sub-Total									63	78	93
Total Income Tax Provision									$ 1,001	$ 938	$ 812
Effective income tax rate									37.40%	38.20%	39.50%
PSE&G [Member]
Income Taxes [Line Items]
Net Income	156	222	167	242	160	200	151	214
Net Income									$ 787	$ 725	$ 612
Federal									32	124	183
State									52	16	0
Total Current									84	140	183
Federal									325	214	101
State									52	84	92
Total Deferred									377	298	193
Investment tax credit									9	11	5
Total Income Tax									470	449	381
Pre-Tax Income									1,257	1,174	993
Tax Computed at Statutory Rate @ 35%									440	411	348
State Income Taxes (net of federal income tax)									67	65	59
Uncertain Tax Positions									(14)	0	0
Plant-Related Items									(20)	(13)	(14)
Tax Credits									(6)	(7)	(6)
Audit Settlement									0	1	0
Other									3	(8)	(6)
Sub-Total									30	38	33
Total Income Tax Provision									$ 470	$ 449	$ 381
Effective income tax rate									37.40%	38.20%	38.40%
Power [Member]
Income Taxes [Line Items]
Net Income	$ 149	$ 206	$ 166	$ 335	$ 320	$ 222	$ 54	$ 164
Net Income									$ 856	$ 760	$ 644
Federal									220	231	262
State									30	39	40
Total Current									250	270	302
Federal									189	163	69
State									52	48	35
Total Deferred									241	211	104
Investment tax credit									20	10	13
Total Income Tax									511	491	419
Pre-Tax Income									1,367	1,251	1,063
Tax Computed at Statutory Rate @ 35%									478	438	372
State Income Taxes (net of federal income tax)									59	58	51
Uncertain Tax Positions									22	(8)	3
Manufacturing Deduction									(10)	(16)	(10)
Nuclear Decommissioning Trust									7	15	12
Tax Credits									(7)	(6)	(2)
Audit Settlement									0	(4)	0
Nuclear Decommissiong Tax Carryback									(33)	0	0
Other									(5)	14	(7)
Sub-Total									33	53	47
Total Income Tax Provision									$ 511	$ 491	$ 419
Effective income tax rate									37.40%	39.20%	39.40%