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	700			700		403		403				296	296
Other Comprehensive Income (Loss), Net of Tax	17				17	1			1			16		16
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	717					404						312
Dividends, Common Stock, Cash	(238)			(238)	0							(250)	(250)
Stockholders' Equity, Other	(42)	$ (11)	$ (31)	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)
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	448			448		440		440				13	13
Other Comprehensive Income (Loss), Net of Tax	8				8	0			0			9		9
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	456					440						22
Dividends, Common Stock, Cash	(248)			(248)	0	(175)		(175)
Stockholders' Equity, Other	(46)	$ (9)	$ (37)	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)