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	(29)
Cumulative Effect of New Accounting Principle in Period of Adoption				$ 176	$ (176)								$ 175	$ (175)
Total Stockholder's Equity	$ 13,847	$ 4,961	$ (763)	9,878	(229)	$ 9,834	$ 892	$ 6,861	$ 0	$ 1,095	$ 986	$ 5,967	4,911	(172)	$ 2,214	$ (986)
Net Income	1,239			1,239		828		828				400	400
Other Comprehensive Income (Loss), Net of Tax	(2)				(2)	(1)			(1)			0		0
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	1,237					827						400
Dividends, Common Stock, Cash	(682)			(682)	0							(400)	(400)
Stockholders' Equity, Other	(43)	$ 5	$ (48)	0	0
Stockholders' Equity, Other Shares		0	(1)
Shares, Outstanding		534	(30)
Total Stockholder's Equity	14,158	$ 4,955	$ (813)	10,426	(410)	10,384	892	7,411	0	1,095	986	6,039	5,161	(350)	2,214	(986)
Net Income	412			412		278		278				125	125
Other Comprehensive Income (Loss), Net of Tax	3				3	(1)			(1)			3		3
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	415					277						128
Dividends, Common Stock, Cash	(227)			(227)	0							(200)	(200)
Stockholders' Equity, Other	13	$ 11	$ 2	0	0
Stockholders' Equity, Other Shares		0	0
Shares, Outstanding		534	(30)
Total Stockholder's Equity	14,359	$ 4,966	$ (811)	10,611	(407)	10,661	892	7,689	(1)	1,095	986	5,967	5,086	(347)	2,214	(986)
Shares, Outstanding		534	(30)
Cumulative Effect of New Accounting Principle in Period of Adoption				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	1,256			1,256		974		974				309	309
Other Comprehensive Income (Loss), Net of Tax	20				20	3			3			29		29
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	1,276					977						338
Dividends, Common Stock, Cash	(713)			(713)	0							(525)	(525)
Stockholders' Equity, Other	(15)	$ 9	$ (24)	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)
Net Income	403			403		344		344				53	53
Other Comprehensive Income (Loss), Net of Tax	(6)				(6)	1			1			(5)		(5)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	397					345						48
Dividends, Common Stock, Cash	(238)			(238)	0							(275)	(275)
Stockholders' Equity, Other	12	$ 9	$ 3	0	0
Stockholders' Equity, Other Shares		0	0
Shares, Outstanding		534	(30)
Total Stockholder's Equity	$ 14,925	$ 4,989	$ (832)	$ 11,206	$ (438)	$ 11,877	$ 892	$ 8,902	$ 2	$ 1,095	$ 986	$ 5,773	$ 4,904	$ (359)	$ 2,214	$ (986)