Condensed Consolidated Statements of Stockholders Equity Condensed Consolidated Statements of Stockholders Equity - USD ($) shares in Millions, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment	AOCI Attributable to Parent [Member]	Public Service Electric and Gas Company [Member]	Public Service Electric and Gas Company [Member] Cumulative Effect, Period of Adoption, Adjustment	Public Service Electric and Gas Company [Member] Common Stock [Member]	Public Service Electric and Gas Company [Member] Retained Earnings [Member]	Public Service Electric and Gas Company [Member] Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment	Public Service Electric and Gas Company [Member] AOCI Attributable to Parent [Member]	Public Service Electric and Gas Company [Member] Contributed Capital [Member]	Public Service Electric and Gas Company [Member] Basis Adjustment [Member]	PSEG Power [Member]	PSEG Power [Member] Retained Earnings [Member]	PSEG Power [Member] AOCI Attributable to Parent [Member]	PSEG Power [Member] Contributed Capital [Member]	PSEG Power [Member] Basis Adjustment [Member]
Shares, Outstanding			534	(30)
Total Stockholder's Equity	$ 15,089	$ (2)	$ 5,003	$ (831)	$ 11,406	$ (2)	$ (489)	$ 11,903	$ (2)	$ 892	$ 8,928	$ (2)	$ 2	$ 1,095	$ 986	$ 5,890	$ 5,063	$ (401)	$ 2,214	$ (986)
Net Income	899				899			723			723					183	183
Other Comprehensive Income (Loss), Net of Tax	34						34	1					1			27		27
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	933							724								210
Dividends, Common Stock, Cash	(495)				(495)		0	(175)			(175)
Stockholders' Equity, Other	(34)		$ 0	$ (34)	0		0
Stockholders' Equity, Other Shares			0	0
Other Comprehensive Income (Loss), Tax	(20)							(1)								(17)
Shares, Outstanding			534	(30)
Total Stockholder's Equity	15,249		$ 4,994	$ (868)	11,604		(481)	12,166		892	9,191		2	1,095	986	5,912	5,076	(392)	2,214	(986)
Net Income	451				451			283			283					170	170
Other Comprehensive Income (Loss), Net of Tax	26						26	1					1			18		18
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	477							284								188
Dividends, Common Stock, Cash	(247)				(247)		0
Stockholders' Equity, Other	12		$ 9	$ 3	0		0
Stockholders' Equity, Other Shares			0	0
Other Comprehensive Income (Loss), Tax	(14)							(1)								(12)
Shares, Outstanding			534	(30)
Total Stockholder's Equity	15,491		$ 5,003	$ (865)	11,808		(455)	12,450		892	9,474		3	1,095	986	6,100	5,246	(374)	2,214	(986)
Shares, Outstanding			534	(30)
Total Stockholder's Equity	15,984		$ 5,031	$ (861)	12,318		(504)	13,129		892	10,078		3	1,170	986	6,212	5,307	(419)	2,310	(986)
Net Income	471				471			786			786					(322)	(322)
Other Comprehensive Income (Loss), Net of Tax	(18)						(18)	(2)					(2)			(15)		(15)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	453							784								(337)
Dividends, Common Stock, Cash	(516)				(516)		0									(175)	(175)
Stockholders' Equity, Other	(43)		$ (5)	$ (38)	0		0
Stockholders' Equity, Other Shares			0	0
Other Comprehensive Income (Loss), Tax	12							1								12
Shares, Outstanding			534	(30)
Total Stockholder's Equity	16,277		$ 5,013	$ (902)	12,708		(542)	13,603		892	10,555		0	1,170	986	6,168	5,293	(449)	2,310	(986)
Net Income	(177)				(177)			309			309					(483)	(483)
Other Comprehensive Income (Loss), Net of Tax	20						20	1					1			15		15
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(157)							310								(468)
Dividends, Common Stock, Cash	(258)				(258)		0
Stockholders' Equity, Other	16		$ 13	$ 3	0		0
Stockholders' Equity, Other Shares			0	0
Other Comprehensive Income (Loss), Tax	(12)							0								(9)
Shares, Outstanding			534	(30)
Total Stockholder's Equity	$ 15,878		$ 5,026	$ (899)	$ 12,273		$ (522)	$ 13,913		$ 892	$ 10,864		$ 1	$ 1,170	$ 986	$ 5,700	$ 4,810	$ (434)	$ 2,310	$ (986)