Condensed Consolidated Statements of Stockholders Equity Condensed Consolidated Statements of Stockholders Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Public Service Electric and Gas Company [Member]	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] 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)
Cumulative Effect Adjustment				$ 81	$ (81)								$ 69	$ (69)
Total Stockholder's Equity	$ 14,377	$ 4,980	$ (808)	10,582	(377)	$ 10,900	$ 892	$ 7,928	$ (1)	$ 1,095	$ 986	$ 5,960	5,051	(319)	$ 2,214	$ (986)
Net Income	853			853		630		630				256	256
Other Comprehensive Income (Loss), Net of Tax	26				26	2			2			34		34
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	879					632						290
Dividends, Common Stock, Cash	(475)			(475)	0							(250)	(250)
Stockholders' Equity, Other	(27)	$ 0	$ (27)	0	0
Stockholders' Equity, Other Shares		0	0
Shares, Outstanding		534	(30)
Total Stockholder's Equity	14,814	$ 4,969	$ (839)	11,125	(441)	11,304	892	8,331	0	1,095	986	6,022	5,166	(372)	2,214	(986)
Net Income	153			153		227		227				(40)	(40)
Other Comprehensive Income (Loss), Net of Tax	9				9	1			1			18		18
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	162					228						(22)
Dividends, Common Stock, Cash	(237)			(237)	0
Stockholders' Equity, Other	15	$ 11	$ 4	0	0
Stockholders' Equity, Other Shares		0	0
Shares, Outstanding		534	(30)
Total Stockholder's Equity	14,754	$ 4,980	$ (835)	11,041	(432)	11,532	892	8,558	1	1,095	986	6,000	5,126	(354)	2,214	(986)
Shares, Outstanding		534	(30)
Cumulative Effect Adjustment	(2)			(2)		(2)		(2)
Total Stockholder's Equity	15,089	$ 5,003	$ (831)	11,406	(489)	11,903	892	8,928	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
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
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)